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WO2010044260A1 - Lentille à puissance progressive - Google Patents

Lentille à puissance progressive Download PDF

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Publication number
WO2010044260A1
WO2010044260A1 PCT/JP2009/005353 JP2009005353W WO2010044260A1 WO 2010044260 A1 WO2010044260 A1 WO 2010044260A1 JP 2009005353 W JP2009005353 W JP 2009005353W WO 2010044260 A1 WO2010044260 A1 WO 2010044260A1
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WO
WIPO (PCT)
Prior art keywords
addition
power
lens
progressive
addl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2009/005353
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English (en)
Japanese (ja)
Inventor
矢成光弘
水野正朝
内山幸昌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nikon Essilor Co Ltd
Original Assignee
Nikon Essilor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2008265633A external-priority patent/JP5138536B2/ja
Priority claimed from JP2008265632A external-priority patent/JP5135160B2/ja
Application filed by Nikon Essilor Co Ltd filed Critical Nikon Essilor Co Ltd
Publication of WO2010044260A1 publication Critical patent/WO2010044260A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
    • G02C7/061—Spectacle lenses with progressively varying focal power

Definitions

  • the present invention relates to a progressive-power lens that is used as an assist for eye accommodation, and particularly to a progressive-power lens in which both the outer surface and the inner surface of the lens are aspherical.
  • Progressive-power lenses do not need to be exchanged or detached when viewing at a distance or near vision, and the lens has no clear borders and is excellent in appearance. It is like that.
  • progressive-power lenses have used semi-finished lenses with progressive-reflecting surfaces pre-processed on the outer surface because of the need for manufacturing simplicity and cost reduction.
  • the same semi-finished product within a certain prescription power range The lens is shared.
  • an inner surface progressive addition lens in which a progressive surface is arranged on the inner surface as a prescription surface and a progressive addition lens in which both the outer surface and the inner surface are aspherical have been commercialized.
  • a double-sided progressive-power lens that progressively forms the outer surface and inner surface has the potential to improve optical performance and generate progressive-power lenses with new optical performance that were difficult with conventional single-sided progressive-power lenses. Therefore, it is attracting attention as an important technology.
  • Patent Document 1 astigmatism is improved as compared with a conventional progressive-power lens, and the magnification difference due to the difference in refractive power between the distance portion and the near portion is improved.
  • an inner surface progressive addition lens with a progressive surface on the inner surface and a progressive surface with a surface addition of negative or positive value on the outer surface are arranged to increase the positive addition on the inner surface.
  • a technique of a double-sided progressive-power lens in which a progressive surface having the same is arranged is disclosed.
  • Patent Document 2 as a double-sided progressive addition lens in which progressive surfaces are arranged on both the outer surface and the inner surface, one of the surfaces is a progressive surface having a positive addition and the other has a negative addition.
  • a technique has been disclosed in which a progressive surface is used to cancel the astigmatism generated on the progressive surface with the astigmatism generated on the progressive surface, thereby reducing the aberration of light transmitted through the lens.
  • the conventional progressive-power lens has been evaluated mainly by the optical performance of the surface refractive power of the progressive surface such as the distribution of surface astigmatism on the progressive surface and the distribution of surface average refractive power.
  • optical performance of the refractive power of the progressive surface (hereinafter referred to as “optical performance of the refractive surface”) and the light beam equivalent to the line of sight when the wearer uses the progressive power lens.
  • optical performance of transmitted light is almost the same.
  • the optical performance of the refracting surface and the optical performance of the transmitted light are almost equal for light incident at an angle close to perpendicular to the lens surface.
  • the optical performance of the refracting surface and the optical performance of the transmitted light do not match. Such a tendency increases as the incident angle of the light ray on the lens surface increases, and the various aberrations occur on the outer surface and the inner surface of the lens, respectively.
  • This discrepancy between the optical performance of the refracting surface and the optical performance of the transmitted light is due to prescription values such as spherical power, astigmatism power, addition power, prism prescription, and lens usage conditions such as frame shape and object distance.
  • prescription values such as spherical power, astigmatism power, addition power, prism prescription, and lens usage conditions such as frame shape and object distance.
  • the optical performance of the progressive power lens when it is actually worn depends on the outer surface because it varies depending on the combination of various conditions such as lens shape conditions such as base curve and progressive surface addition. It is difficult to simply evaluate the optical performance of the refracting surface of the progressive surface set on the inner surface.
  • the optical performance of the transmitted light in consideration of the prescription and usage of the wearer, not the optical performance of the refracting surface of the progressive surface as in the past, is the target progressive refractive power. It is necessary to optimize the optical performance of so-called transmitted light (hereinafter simply referred to as “optimization”) to improve the lens so that it is closer to the optical performance of the lens, and to determine the shape of the correction surface of the progressive-power lens. is there.
  • An object in an aspect of the present invention is to provide a prescription for the wearer in a progressive power lens included in a progressive power lens series that is set so that the optical effects on lens wear and the basic specifications of the lens are equal.
  • the optical power of the transmitted light is made equal to the value specified by the prescription value, which is an important specification for the progressive-power lens. It is an object of the present invention to provide a progressive-power lens capable of maintaining good performance.
  • the progressive-power lens according to the aspect of the present invention is a progressive-power lens included in a progressive-power lens series corresponding to a plurality of different prescriptions, and includes an outer surface serving as a refractive surface on the object side in a worn state, and a worn state And an inner surface which is a refractive surface on the eyeball side, and at least one of the outer surface and the inner surface is provided at a position above the lens in a wearing state, Provided in the lower position of the lens in a state, relatively suitable for near vision, provided between the distance portion and the near portion, between the distance portion and the near portion A progressive portion whose surface refractive power changes progressively, one of the outer surface and the inner surface being a reference surface having a predetermined surface shape, the other being a correction surface, and an addition specified by a prescription value Is specified as a prescription value when the addition is add.
  • the distance power is S (add)
  • the astigmatism power specified by the prescription value is C (add)
  • the surface addition power of the reference surface which is a difference from the refractive power
  • the surface average refractive power at the near reference point of the correction surface and the surface average refractive power at the distance reference point of the correction surface
  • the addition power of the correction surface which is the difference between the correction power
  • the addition power is a first progressive addition lens having a first addition power addl from the progressive addition lens series
  • the addition power Is selected from the second progressive addition lens having a second addition power addh larger than the first addition power addl, the distance power S (addl) and the astigmatism power C in the first progressive power lens are selected.
  • Progressive-power lenses have the advantage that the greater the add power, the less the adjustment power required for near vision, but the various aberrations that occur in the entire lens occur almost in proportion to the value of the add power. Therefore, the larger the wearing addition, the more aberration and image distortion occur.
  • the wearing power of all progressive power lenses included in the progressive power lens series set so that the optical effects on the lens wear and the basic specifications of the lenses are equal is necessary for the wearer. It is necessary to set it equal to the addition specified by the prescription.
  • the distance power S specified by the prescription value is equal to or greater than zero between the first progressive power lens and the second progressive power lens among the plurality of progressive power lenses.
  • the optimization of the optical performance of the transmitted light in the embodiment of the present invention is preferably performed in consideration of the influence of the rotational movement of the eye due to the law of listing.
  • the unit of refractive power is represented by diopter (D) unless otherwise specified.
  • the progressive-power lens according to the aspect of the present invention is a progressive-power lens included in a progressive-power lens series corresponding to a plurality of different prescriptions, and includes an outer surface serving as a refractive surface on the object side in a worn state, and a worn state And an inner surface which is a refractive surface on the eyeball side, and at least one of the outer surface and the inner surface is provided at a position above the lens in a wearing state, Provided in the lower position of the lens in a state, relatively suitable for near vision, provided between the distance portion and the near portion, between the distance portion and the near portion A progressive portion whose surface refractive power changes progressively, one of the outer surface and the inner surface being a reference surface having a predetermined surface shape, the other being a correction surface, and an addition specified by a prescription value Is specified as a prescription value when the addition is add.
  • the distance power is S (add)
  • the astigmatism power specified by the prescription value is C (add)
  • the surface addition power of the reference surface which is the difference from the refractive power, is ADDb (add), the surface average refractive power at the near reference point of the correction surface, and the surface average refractive power at the distance reference point of the correction surface
  • the surface addition of the correction surface which is the difference between them, is ADDc (add)
  • the surface addition correction amount for determining the surface addition ADDb of the reference surface from the addition add is ACV (add)
  • the progressive refraction The first progressive addition lens having the addition power of the first addition power addl and the second progressive refraction having the addition power of the second addition power addh larger than the first addition power addl from the power lens series.
  • the first progressive power lens The distance power S (addl), the astigmatism power C (addl), the surface addition ADDb (addl) of the reference surface, the surface addition ADDc (addl) of the correction surface, and the surface addition correction amount ACV ( addl), the distance power S (addh), the astigmatism power C (addh), the surface addition ADDb (addh) of the reference surface, and the surface addition of the correction surface of the second progressive addition lens.
  • the distance power S specified by the prescription value is equal between the first progressive power lens and the second progressive power lens among the plurality of progressive power lenses, and the prescription value
  • the surface addition ADDb (addh) of the reference surface of the second progressive addition lens having the same astigmatism power C specified by, and a large addition add specified by the prescription is the first progressive addition power having a small addition add.
  • the surface addition ADDb (addl) of the lens reference surface is larger, the difference between the surface addition ADDc (addh) and the surface addition ADDc (addl) of each correction surface decreases as the addition add increases. It was decided to set to.
  • the value of the difference between the surface addition ADDc (addh) and the surface addition ADDc (addl) is normalized by the value of the difference between addh and addl.
  • the unit of refractive power is represented by diopter (D) unless otherwise specified.
  • the progressive-power lens according to the aspect of the present invention is a progressive-power lens included in a progressive-power lens series corresponding to a plurality of different prescriptions, and includes an outer surface serving as a refractive surface on the object side in a worn state, and a worn state And an inner surface which is a refractive surface on the eyeball side, and at least one of the outer surface and the inner surface is provided at a position above the lens in a wearing state, Provided in the lower position of the lens in a state, relatively suitable for near vision, provided between the distance portion and the near portion, between the distance portion and the near portion A progressive portion whose surface refractive power changes progressively, one of the outer surface and the inner surface being a reference surface having a predetermined surface shape, the other being a correction surface, and an addition specified by a prescription value Is specified as a prescription value when the addition is add.
  • the distance power is S (add)
  • the astigmatism power specified by the prescription value is C (add)
  • the surface addition power of the reference surface which is the difference from the refractive power, is ADDb (add), the surface average refractive power at the near reference point of the correction surface, and the surface average refractive power at the distance reference point of the correction surface
  • the surface addition of the correction surface which is the difference between them, is ADDc (add)
  • the surface addition correction amount for determining the surface addition ADDb of the reference surface from the addition add is ACV (add)
  • the progressive refraction The first progressive addition lens having the addition power of the first addition power addl and the second progressive refraction having the addition power of the second addition power addh larger than the first addition power addl from the power lens series.
  • the first progressive power lens The distance power S (addl), the astigmatism power C (addl), the surface addition ADDb (addl) of the reference surface, the surface addition ADDc (addl) of the correction surface, and the surface addition correction amount ACV ( addl), the distance power S (addh), the astigmatism power C (addh), the surface addition ADDb (addh) of the reference surface, and the surface addition of the correction surface of the second progressive addition lens.
  • the distance power S specified by the prescription value is equal between the first progressive power lens and the second progressive power lens among the plurality of progressive power lenses, and the prescription value
  • the surface addition ADDb (addh) of the reference surface of the second progressive addition lens having the same astigmatism power C specified by, and a large addition add specified by the prescription is the first progressive addition power having a small addition add.
  • the addition of the reference surface of the lens is larger than the addition ADDb (addl)
  • the difference between ⁇ ADDh and ⁇ ADD1 is set to decrease as the addition add increases.
  • the difference value between ⁇ ADDh and ⁇ ADDl is normalized by the difference value between addh and addl.
  • the optical performance of the transmitted light in consideration of the wearer's prescription and usage conditions so as to satisfy the above relationship when comparing any two of the plurality of progressive-power lenses It is possible to improve the addition power, which is an important specification in the progressive power lens, to be equal to the value specified in the prescription value and to make the optical performance of the transmitted light closer to the optical performance of the target progressive power lens. It becomes possible. As a result, the optical effects on lens wearing and the basic specifications of the lens can be made equal in the lens series. In addition, it is preferable to optimize the optical performance of the transmitted light in the present invention in consideration of the influence of the rotational movement of the eye due to the law of listing. In the above conditional expression, the unit of refractive power is represented by diopter (D) unless otherwise specified.
  • the optical power of the transmitted light is made equal to the value specified by the prescription value, which is an important specification for the progressive-power lens. It is possible to improve the performance so as to be closer to the optical performance of the progressive-power lens whose performance is a target.
  • the unit of refractive power is represented by diopter (D) unless otherwise specified.
  • the glasses are used when the progressive power lens is processed for spectacles. It is based on the positional relationship of the lenses when worn. Also in the following drawings, the positional relationship (up / down / left / right) of the lens is the same as the positional relationship (up / down / left / right) with respect to the paper surface.
  • the object side surface is referred to as an “outer surface” and the eyeball side surface is referred to as an “inner surface”.
  • FIG. 1 is a diagram showing an outline of region division in the progressive-power lens according to the present embodiment.
  • the progressive addition lens LS is in a state before processing the lens according to the shape of the spectacle frame (a state before lashing processing), and is formed in a circular shape in plan view. .
  • the progressive-power lens LS is arranged on the upper side in the figure when worn, and the lower side in the figure is arranged on the lower side when worn.
  • the progressive addition lens LS has a distance portion F, a near portion N, and a progressive portion P.
  • the progressive power lens series according to this embodiment is configured by combining a plurality of such progressive power lenses LS.
  • the distance portion F is disposed above the progressive addition lens LS, and after the progressive addition lens LS is processed for spectacles, it becomes a portion suitable for relatively far vision.
  • the near portion N is disposed below the progressive power lens LS, and becomes a portion suitable for near vision after the progressive power lens LS is processed for spectacles.
  • the progressive portion P is disposed between the distance portion F and the near portion N in the progressive power lens LS, and the surface refractive power between the distance portion F and the near portion N is progressively changed. It is a part to be made.
  • the progressive power lens LS has a plurality of reference points.
  • a reference point examples include an eye point (also called a fitting point) EP, an optical center point OG, a distance reference point OF, and a near reference point ON, as shown in FIG.
  • the eye point EP is a reference point when the wearer wears the lens.
  • the optical center point OG is the center point of the optical characteristics of the lens.
  • the distance reference point OF is a measurement reference point for measuring the distance power of the lens in the distance portion F.
  • the near reference point ON is a measurement reference point for measuring the near power of the lens in the near portion N.
  • the surface average refractive power at the distance reference point OF or the surface average power at the near reference point ON is set based on the distance power or near power specified by the prescription value, respectively.
  • a value obtained by subtracting the surface average refractive power of the near reference point OF from the surface average refractive power of the near reference point ON measured by the progressive addition lens LS is expressed as “surface addition power”.
  • the addition specified by the prescription value is “prescription addition”, and the average refractive power DN of the transmitted light LN passing through the near reference point ON of the lens to the average of the transmitted light LF passing through the distance reference point OF.
  • a value obtained by subtracting the refractive power DF is referred to as “wear addition power”.
  • the progressive addition lens LS has a main gaze MM 'that passes through the distance reference point OF and the near reference point ON and divides the refractive surface of the progressive surface into a nose side region and an ear side region.
  • the main gazing line MM ' is also called a main meridian and is used as an important reference line in designing a progressive surface.
  • the main gazing line is defined as a curve curved to the nose side from the distance portion F to the near portion N in consideration of the convergence at the near vision in the progressive power lens of the asymmetric design, and the progressive power lens of the symmetric design. Is defined as a straight line passing through the distance reference point OF and the near reference point ON.
  • FIG. 2 is a schematic diagram showing how light rays of the progressive-power lens LS pass in the wearing state.
  • an arbitrary light beam L corresponding to the line of sight of the wearer passes through a point O1 on the lens surface M1 that is the outer surface, a point O2 on the lens surface M2 that is the inner surface, and the rotation point RC of the eyeball.
  • An image is formed at a point OR on R.
  • the light ray passes through the point O1 and the point O2, it is refracted according to the incident angle with respect to each point.
  • the light beam LF passing through the distance reference point corresponding to the line of sight of the wearer passes through the distance reference point OF1 on the lens surface M1 which is the outer surface and the distance reference point OF2 on the lens surface M2 which is the inner surface. Further, an image is formed at a point ORf on the retina R of the eyeball through the rotation point RC of the eyeball.
  • the light ray passes through the point OF1 and the point OF2, it is refracted according to the incident angle with respect to each point.
  • the light beam LN passing through the near reference point corresponding to the line of sight of the wearer passes through the near reference point ON1 on the lens surface M1 that is the outer surface and the near reference point ON2 on the lens surface M2 that is the inner surface.
  • An image is formed at a point ORn on the retina R of the eyeball through the rotation point RC of the eyeball.
  • the lens surface M1 that is an outer surface is used as a reference surface
  • the lens surface M2 that is an inner surface is described as a correction surface formed in an aspherical shape in order to correct the optical performance of transmitted light.
  • the distance reference point OF1 and the near reference point ON1 on the lens surface M1 and the distance reference point OF2 and the near reference point ON2 on the lens surface M2 are usually lens surfaces through which the optical axis OA of the lens passes.
  • the positions are set apart from the optical center OG1 on M1 and the optical center OG2 on the lens surface M2. That is, the light beam LF and the light beam LN do not enter the lens surface perpendicularly, and aberration occurs even in light beams passing through the distance reference point and the near reference point.
  • the lens surface M1 that is the outer surface is used as a reference surface
  • the lens surface M2 that is the inner surface is used as a correction surface
  • the addition specified by the prescription value is add.
  • the distance power specified by the prescription value is S (add)
  • the astigmatism power specified by the prescription value is C (add)
  • the surface addition power of the reference surface M1 which is the difference between the surface average refractive power and the surface average refractive power of the reference surface at the distance reference point OF, is ADDb (add), and the surface average of the correction surface M2 at the near reference point ON.
  • the distance power S specified by the prescription value is between the first progressive power lens and the second progressive power lens among the plurality of progressive power lenses LS. If the astigmatism power C specified by the prescription value is equal and the surface addition ADDb of the reference surface M1 is equal, the difference between the above-mentioned ⁇ ADDh and ⁇ ADDl increases as the addition add specified by the prescription increases. Was set to decrease. In this embodiment, the value normalized by the difference value between addh and addl is used as the difference value between ⁇ ADDh and ⁇ ADD1.
  • the outer surface M1 of the outer surface M1 and the inner surface M2 is the reference surface and the inner surface M2 is the correction surface.
  • the present invention is not limited to this.
  • the inner surface M2 is the reference surface
  • the outer surface M1 is The conditional expressions (1) to (4) can be applied even with the configuration of the correction surface.
  • Example 1 of the present invention will be described with reference to Table 1.
  • Table 1 shows the addition addl specified by the prescription value for the first progressive addition lens, the surface addition ADDc (addl) on the correction surface, the wear addition ADD (addl), and the prescription for the second progressive addition lens.
  • Addition addh specified by value surface addition ADDc (addh) on the correction surface, wear addition ADD (addh), ⁇ ADDh, ADDb (addl) + ADDc (ADDb (addh) + ADDc (addh) ⁇ addh) addl) -addl and ⁇ ADD1, and the difference between ⁇ ADDh and ⁇ ADDl divided by the difference between the addition addh and the addition addl.
  • the progressive-power lens series according to Example 1 includes a first progressive-power lens having an addition addl of 3.25 and a second progressive-power lens having an addition addh of 3.50.
  • the progressive-power lens series according to this example has a refractive index n of 1.67, a surface average refractive power PFb at a reference point for distance of 6.27, 6.27,
  • the distance power S specified by the prescription value is 5.00
  • the astigmatism power specified by the prescription value is 0.00
  • the surface addition ADDb at the reference plane is 4.00.
  • the surface addition ADDc (addl) on the correction surface of the first progressive-power lens was set to -1.24, and the surface addition ADDc (addh) on the correction surface of the second progressive-power lens was set to -1.02.
  • ⁇ ADDl was ⁇ 0.49 and ⁇ ADDh was ⁇ 0.52.
  • a value obtained by dividing the difference between ADDh and ⁇ ADD1 by the difference between the addition addh and the addition addl was ⁇ 0.13.
  • the values of the wearing addition ADD in the lenses having the respective prescription additions were all equal to the prescription addition add, and the object of the present invention could be achieved.
  • Example 2 A second embodiment of the present invention will be described with reference to Table 2.
  • Table 2 shows the addition addl specified by the prescription value for the first progressive addition lens, the surface addition ADDc (addl) on the correction surface, the wear addition ADD (addl), and the second progression, as in Table 1 above.
  • the progressive-power lens series according to Example 2 includes a first progressive-power lens having an addition addl of 2.25 and a second progressive-power lens having an addition addh of 2.50.
  • the progressive-power lens series according to the present example has a refractive index n of 1.67, a surface average refractive power PFb at the reference point for distance of the reference surface of 6.27,
  • the distance power S specified by the prescription value is 4.00, the astigmatism power specified by the prescription value is 0.00, and the surface addition ADDb at the reference plane is 3.00.
  • the surface addition ADDc (addl) on the correction surface of the first progressive addition lens was set to ⁇ 1.02.
  • the surface addition ADDc (addh) on the correction surface of the second progressive addition lens was set to ⁇ 0.80.
  • ⁇ ADD1 was ⁇ 0.27 and ⁇ ADDh was ⁇ 0.30.
  • a value obtained by dividing the difference between ADDh and ⁇ ADD1 by the difference between the addition addh and the addition addl was ⁇ 0.12.
  • the values of the wearing addition ADD in the lenses having the respective prescription additions were all equal to the prescription addition add, and the object of the present invention could be achieved.
  • Example 3 of the present invention will be described with reference to Table 3.
  • Table 3 is similar to Table 1 and Table 2 above, the addition addl specified by the prescription value for the first progressive addition lens, the surface addition ADDc (addl) on the correction surface, wear addition ADD (addl), The addition power specified by the prescription value for the second progressive addition lens, the surface addition power ADDc (addh) on the correction surface, the wear power addition ADD (addh), ADDb (addh) + ADDc (addh)-addh ⁇ ADDh, ADDb (addl) + ADDc (addl) ⁇ addl, and a value obtained by dividing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl.
  • the progressive-power lens series according to Example 3 includes a first progressive-power lens having an addition addl of 0.75 and a second progressive-power lens having an addition addh of 1.00.
  • the progressive-power lens series according to the present example has a refractive index n of 1.67, a surface average refractive power PFb at the reference point for distance of the reference surface of 6.27,
  • the distance power S specified by the prescription value is 3.00, the astigmatism power specified by the prescription value is 0.00, and the surface addition ADDb at the reference plane is 1.50.
  • the surface addition ADDc (addl) on the correction surface of the first progressive addition lens was set to ⁇ 0.83. Further, the surface addition ADDc (addh) on the correction surface of the second progressive addition lens was set to ⁇ 0.59. As a result, ⁇ ADDl was ⁇ 0.08 and ⁇ ADDh was ⁇ 0.09. Further, a value obtained by dividing the difference between ⁇ ADDh and ⁇ ADD1 by the difference between the addition addh and the addition addl was ⁇ 0.07.
  • the values of the wearing addition ADD in the lenses having the respective prescription additions were all equal to the prescription addition add, and the object of the present invention could be achieved.
  • Example 4 of the present invention will be described with reference to Table 4.
  • Table 4 similarly to Tables 1 to 3 above, the addition addl specified by the prescription value for the first progressive addition lens, the surface addition ADDc (addl) on the correction surface, the wearing addition ADD (addl), The addition power specified by the prescription value for the second progressive addition lens, the surface addition power ADDc (addh) on the correction surface, the wear power addition ADD (addh), ADDb (addh) + ADDc (addh)-addh ⁇ ADDh, ADDb (addl) + ADDc (addl) ⁇ addl, and a value obtained by dividing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl.
  • the progressive-power lens series according to Example 4 includes a first progressive-power lens having an addition addl of 3.25 and a second progressive-power lens having an addition addh of 3.50.
  • the progressive-power lens series according to the present example has a refractive index n of 1.67, a surface average refractive power PFb at the reference point for distance of the reference surface of 4.39, The distance power S specified by the prescription value is 4.00, the astigmatism power specified by the prescription value is 0.00, and the surface addition ADDb at the reference plane is 4.00.
  • the surface addition ADDc (addl) on the correction surface of the first progressive addition lens was set to -1.28. Further, the surface addition ADDc (addh) on the correction surface of the second progressive addition lens was set to ⁇ 1.07.
  • ⁇ ADDl was ⁇ 0.53 and ⁇ ADDh was ⁇ 0.57.
  • a value obtained by dividing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.15.
  • the values of the wearing addition ADD in the lenses having the respective prescription additions were all equal to the prescription addition add, and the object of the present invention could be achieved.
  • Example 5 of the present invention will be described with reference to Table 5.
  • Table 5 similarly to Tables 1 to 4 above, the addition addl specified by the prescription value for the first progressive addition lens, the surface addition ADDc (addl) on the correction surface, the wearing addition ADD (addl), The addition power specified by the prescription value for the second progressive addition lens, the surface addition power ADDc (addh) on the correction surface, the wear power addition ADD (addh), ADDb (addh) + ADDc (addh)-addh ⁇ ADDh, ADDb (addl) + ADDc (addl) ⁇ addl, and a value obtained by dividing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl.
  • the progressive-power lens series according to Example 5 includes a first progressive-power lens having an addition addl of 2.25 and a second progressive-power lens having an addition addh of 2.50.
  • the progressive-power lens series according to this example has a refractive index n of 1.67, a surface average refractive power PFb at a reference point for distance of the reference surface of 4.39,
  • the distance power S specified by the prescription value is 1.00
  • the astigmatism power specified by the prescription value is 0.00
  • the surface addition ADDb at the reference plane is 3.00.
  • the surface addition ADDc (addl) on the correction surface of the first progressive addition lens was set to ⁇ 0.96. Further, the surface addition ADDc (addh) on the correction surface of the second progressive addition lens was set to ⁇ 0.73.
  • ⁇ ADD1 was ⁇ 0.21 and ⁇ ADDh was ⁇ 0.23.
  • a value obtained by dividing the difference between ⁇ ADDh and ⁇ ADD1 by the difference between the addition addh and the addition addl was ⁇ 0.08.
  • the values of the wearing addition ADD in the lenses having the respective prescription additions were all equal to the prescription addition add, and the object of the present invention could be achieved.
  • Example 6 of the present invention will be described with reference to Table 6.
  • Table 6 is similar to Tables 1 to 5 above, the addition addl specified by the prescription value for the first progressive addition lens, the surface addition ADDc (addl) on the correction surface, the wear addition ADD (addl), The addition power specified by the prescription value for the second progressive addition lens, the surface addition power ADDc (addh) on the correction surface, the wear power addition ADD (addh), ADDb (addh) + ADDc (addh)-addh ⁇ ADDh, ADDb (addl) + ADDc (addl) ⁇ addl, and a value obtained by dividing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl.
  • the progressive-power lens series according to Example 6 includes a first progressive-power lens having an addition addl of 1.75 and a second progressive-power lens having an addition addh of 2.00.
  • the progressive-power lens series according to this example has a refractive index n of 1.67, a surface average refractive power PFb at a reference point for distance of the reference surface of 4.39, The distance power S specified by the prescription value is 0.00, the astigmatism power specified by the prescription value is 0.00, and the surface addition ADDb at the reference plane is 2.50.
  • the surface addition ADDc (addl) on the correction surface of the first progressive addition lens was set to ⁇ 0.90.
  • the surface addition ADDc (addh) on the correction surface of the second progressive addition lens was set to ⁇ 0.66.
  • ⁇ ADDl was ⁇ 0.15
  • ⁇ ADDh was ⁇ 0.16.
  • a value obtained by dividing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was found to be ⁇ 0.05.
  • the values of the wearing addition ADD in the lenses having the respective prescription additions were all equal to the prescription addition add, and the object of the present invention could be achieved.
  • the distance power S specified by the prescription value is equally zero between the first progressive power lens and the second progressive power lens among the plurality of progressive power lenses LS.
  • the astigmatism power C specified by the prescription value is equal and the surface addition ADDb of the reference surface M1 is equal
  • the difference between ⁇ ADDh and ⁇ ADDl decreases as the addition add specified by the prescription increases. It was decided to set to.
  • the value normalized by the difference value between addh and addl is used as the difference value between ⁇ ADDh and ⁇ ADD1.
  • the optical performance of transmitted light is optimized in consideration of the wearer's prescription and usage conditions so that the above relationship is satisfied when comparing any two of a plurality of progressive-power lenses.
  • the optical performance of the transmitted light is improved so that it is closer to the optical performance of the target progressive-power lens. Became possible.
  • the optical effects on lens wearing and the basic specifications of the lens can be made equal in the lens series.
  • a value obtained by subtracting the surface average refractive power of the distance reference point OF from the surface average refractive power of the near reference point ON measured by the progressive addition lens LS is referred to as “surface addition power”.
  • the addition specified by the prescription value is “prescription addition”, and the average refractive power DN of the transmitted light LN passing through the near reference point ON of the lens to the average of the transmitted light LF passing through the distance reference point OF.
  • a value obtained by subtracting the refractive power DF is referred to as “wear addition power”.
  • the correction amount of the surface addition for determining the surface addition of the reference surface from the prescription addition is defined as a “surface addition correction amount”. Therefore, the surface addition of the reference surface is the sum of the surface addition correction amount and the prescription addition.
  • the progressive addition lens LS has a main gaze MM 'that passes through the distance reference point OF and the near reference point ON and divides the refractive surface of the progressive surface into a nose side region and an ear side region.
  • the main gazing line MM ' is also called a main meridian and is used as an important reference line in designing a progressive surface.
  • the main gazing line is defined as a curve curved to the nose side from the distance portion F to the near portion N in consideration of the convergence at the near vision in the progressive power lens of the asymmetric design, and the progressive power lens of the symmetric design. Is defined as a straight line passing through the distance reference point OF and the near reference point ON.
  • an arbitrary light beam L corresponding to the line of sight of the wearer passes through a point O1 on the lens surface M1 that is the outer surface, a point O2 on the lens surface M2 that is the inner surface, and the rotation point RC of the eyeball.
  • An image is formed at a point OR on R.
  • the light beam LF passing through the distance reference point corresponding to the line of sight of the wearer passes through the distance reference point OF1 on the lens surface M1 which is the outer surface and the distance reference point OF2 on the lens surface M2 which is the inner surface.
  • an image is formed at a point ORf on the retina R of the eyeball through the rotation point RC of the eyeball.
  • the light beam LN passing through the near reference point corresponding to the line of sight of the wearer passes through the near reference point ON1 on the lens surface M1 that is the outer surface and the near reference point ON2 on the lens surface M2 that is the inner surface.
  • An image is formed at a point ORn on the retina R of the eyeball through the rotation point RC of the eyeball.
  • the lens surface M1 that is an outer surface is used as a reference surface
  • the lens surface M2 that is an inner surface is described as a correction surface formed in an aspherical shape in order to correct the optical performance of transmitted light.
  • the light beam L corresponding to the line of sight of the wearer hardly enters the lens surface perpendicularly except for the light beam passing through the vicinity of the optical axis OA of the lens, and the position where the light beam enters the lens surface is the position of the lens.
  • the incident angle on the lens surface tends to increase. In other words, various aberrations are caused by light rays passing through the periphery of the lens surface.
  • the distance reference point OF1 and the near reference point ON1 on the lens surface M1 and the distance reference point OF2 and the near reference point ON2 on the lens surface M2 are usually lens surfaces through which the optical axis OA of the lens passes.
  • the positions are set apart from the optical center OG1 on M1 and the optical center OG2 on the lens surface M2. That is, the light beam LF and the light beam LN do not enter the lens surface perpendicularly, and aberration occurs even in light beams passing through the distance reference point and the near reference point.
  • the lens surface M1 that is the outer surface is used as the reference surface
  • the lens surface M2 that is the inner surface is used as the correction surface
  • the prescription addition power is set to add. Is the distance power specified at the near reference point ON1 of the reference surface M1 as S (add), the astigmatic power specified by the prescription value as C (add), respectively.
  • the surface addition power of the reference surface M1 which is the difference between the surface average power at the distance reference point OF1 of the reference surface M1 and ADDb (add), and the surface average power at the near reference point ON2 of the correction surface M2
  • ADDc (add) the surface addition power of the correction surface M2
  • ACV (add) as the plane addition correction amount of When the first progressive addition lens having the prescription addition power of the first addition power addl and the second progressive addition power lens having the second addition power addh having the prescription addition power larger than the first addition power addl are selected.
  • the lens surface M1 that is the outer surface is used as the reference surface
  • the lens surface M2 that is the inner surface is used as the correction surface
  • the prescription addition power is set to add. Is the distance power specified at the near reference point ON1 of the reference surface M1 as S (add), the astigmatic power specified by the prescription value as C (add), respectively.
  • the surface addition power of the reference surface M1 which is the difference between the surface average power at the distance reference point OF1 of the reference surface M1 and ADDb (add), and the surface average power at the near reference point ON2 of the correction surface M2
  • ADDc (add) the surface addition power of the correction surface M2
  • ACV (add) as the plane addition correction amount of When the first progressive addition lens having the prescription addition power of the first addition power addl and the second progressive addition power lens having the second addition power addh having the prescription addition power larger than the first addition power addl are selected.
  • the distance power S specified by the prescription value is between the first progressive power lens and the second progressive power lens among the plurality of progressive power lenses LS.
  • the surface addition ADDb (addh) of the reference surface of the second progressive addition lens having the same astigmatism power C specified by the prescription value and the same addition add specified by the prescription is large, and the addition add is small.
  • the surface addition ADDb (addl) of the reference surface of one progressive-power lens becomes larger, the surface addition ADDc (addh) and surface addition ADDc (addl) of each correction surface as the addition add increases. It was decided to set so as to reduce the difference between the two.
  • the distance power S specified by the prescription value is equal between the first progressive power lens and the second progressive power lens, and the astigmatism power C specified by the prescription value is equal
  • the surface addition ADDb (addh) of the reference surface of the second progressive-power lens having a large addition add specified by the prescription is the surface addition ADDb (addb) of the reference surface of the first progressive-power lens having a small addition add.
  • the difference between ⁇ ADDh and ⁇ ADDl is set to decrease as the addition add increases.
  • the optical performance of transmitted light is optimized in consideration of the wearer's prescription and usage conditions so that the above relationship is satisfied when comparing any two of a plurality of progressive-power lenses.
  • the optical performance of the transmitted light is improved so that it is closer to the optical performance of the target progressive-power lens. Is possible.
  • the optical effects on lens wearing and the basic specifications of the lens can be made equal in the lens series.
  • the outer surface M1 of the outer surface M1 and the inner surface M2 is the reference surface and the inner surface M2 is the correction surface.
  • the present invention is not limited to this.
  • the inner surface M2 is the reference surface
  • the outer surface M1 is It is possible to apply the conditional expressions (5) to (12) even if the correction surface is used.
  • Example 7 of the present invention will be described with reference to Table 7.
  • Table 7 shows prescription addition addl for the first progressive addition lens, surface addition ADDb (addl) on the reference surface, surface addition ADDc (addl) on the correction surface, prescription addition for the second progressive addition lens addh, surface addition ADDb (addh) on the reference surface, surface addition ADDc (addh) on the correction surface, surface addition of the reference surface in the second progressive-power lens and surface addition of the reference surface in the first progressive-power lens Difference ADDb (addh) ⁇ ADDb (addl), difference between the addition power of the correction surface of the second progressive addition lens and the addition power of the correction surface of the first progressive addition lens ADDc (addh) ⁇ ADDc (Addl), the difference between these ADDc (addh) and ADDc (addl) is determined by the difference between the addition addh and the addition addl.
  • the progressive-power lens series according to Example 7 has six progressive-power lenses having prescription additions of 1.00, 1.50, 2.00, 2.50, 3.00, and 3.50. Yes.
  • the progressive-power lens series according to the present example has a refractive index n of 1.67, a surface average refractive power PFb at a reference point for distance of 6.27, 6.27,
  • the distance power S specified by the prescription value is 5.00
  • the astigmatism power C specified by the prescription value is 0.00
  • the surface addition correction amount ACV is 0.50.
  • the lens with the prescription addition of 1.00 has a surface addition of the reference surface of 1.50 and a lens with the prescription addition of 1.50.
  • the surface addition of the reference plane is 2.00
  • the lens with the prescription addition 2.00 is the surface addition of the reference plane 2.50
  • the lens with the prescription addition 2.50 is the surface addition of the reference plane
  • a lens with a power of 3.00 and a prescription addition of 3.00 has a surface addition of 3.50 on the reference surface
  • a lens with a prescription addition of 3.50 has a surface addition of 4.00 on the reference surface. became.
  • the surface addition of the correction surface of the lens having the prescription addition of 1.00 is set to ⁇ 0.73
  • the surface addition of the correction surface of the lens having the prescription addition of 1.50 is set to ⁇ 0.78.
  • the surface addition of the correction surface of the lens having a degree of 2.00 is ⁇ 0.83
  • the surface addition of the correction surface of the lens having a prescription addition of 2.50 is ⁇ 0.88, and the addition of the prescription is 3.
  • the surface addition of the correction surface of the 00 lens was ⁇ 0.95, and the surface addition of the correction surface of the lens having the prescription addition of 3.50 was ⁇ 1.02.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.10.
  • the value of ⁇ ADDh was ⁇ 0.28, and the value of ⁇ ADDl was ⁇ 0.23.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.10.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.10. Further, the value of ⁇ ADDh was ⁇ 0.33, and the value of ⁇ ADDl was ⁇ 0.28. As a result, the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.10.
  • each column of the third row (3) from the top of Example 7 is as follows.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.11.
  • the value of ⁇ ADDh was ⁇ 0.38, and the value of ⁇ ADDl was ⁇ 0.33.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.11.
  • the values shown in the columns of the fourth row (4) from the top of Example 7 are as follows.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.13.
  • the value of ⁇ ADDh was ⁇ 0.45, and the value of ⁇ ADDl was ⁇ 0.38.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.13.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.15.
  • the value of ⁇ ADDh was ⁇ 0.52, and the value of ⁇ ADDl was ⁇ 0.45.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.15.
  • the values of the wearing addition ADD in the lenses having the respective prescription additions were all equal to the prescription addition add, and the object of the present invention could be achieved.
  • Example 8 of the present invention will be described with reference to Table 8.
  • Table 8 shows a prescription addition addl for the first progressive addition lens, a surface addition ADDb (addl) on the reference surface, a surface addition ADDc (addl) on the correction surface, and the second progressive addition lens as in Table 7.
  • the progressive-power lens series according to Example 8 has six progressive-power lenses with prescription additions of 0.75, 1.25, 1.75, 2.25, 2.75, and 3.25. Yes.
  • the progressive-power lens series according to the present example has a refractive index n of 1.67, a surface average refractive power PFb at the reference point for distance of the reference surface of 6.27,
  • the distance power S specified by the prescription value is 3.00, the astigmatism power C specified by the prescription value is 0.00, and the surface addition correction amount ACV is 0.75.
  • the lens with the prescription addition of 0.75 has the surface addition of the reference surface of 1.50 and the lens with the prescription addition of 1.25.
  • the reference surface has a surface addition of 2.00
  • the lens with a prescription addition of 1.75 has a reference surface addition of 2.50
  • the lens with a prescription addition of 2.25 has a surface addition of the reference surface.
  • the lens with a prescription addition of 2.75 has a reference surface addition of 3.50
  • the lens with a prescription addition of 3.25 has a reference addition of 4.00. became.
  • the addition of the correction surface of the lens having a prescription addition of 0.75 is ⁇ 0.83, and the addition of the correction surface of the lens having a prescription addition of 1.25 is ⁇ 0.86.
  • the surface addition of the correction surface of the lens having a degree of 1.75 is ⁇ 0.91
  • the surface addition of the correction surface of a lens having a prescription addition of 2.25 is ⁇ 0.96, and the prescription addition is 2.
  • the surface addition of the correction surface of the 75 lens was ⁇ 1.01
  • the surface addition of the correction surface of the lens having the prescription addition of 3.25 was ⁇ 1.05.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.08. Further, the value of ⁇ ADDh was ⁇ 0.11, and the value of ⁇ ADD1 was ⁇ 0.08. As a result, the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.08.
  • the values shown in each column of the second row (2) from the top in Example 8 are as follows.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.08.
  • the value of ⁇ ADDh was ⁇ 0.16, and the value of ⁇ ADDl was ⁇ 0.11.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.08.
  • each column of the third row (3) from the top in Example 8 is as follows.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.10. Further, the value of ⁇ ADDh was ⁇ 0.21, and the value of ⁇ ADD1 was ⁇ 0.16. As a result, the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.10.
  • the values shown in the columns of the fourth row (4) from the top in Example 8 are as follows.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.11.
  • the value of ⁇ ADDh was ⁇ 0.26, and the value of ⁇ ADDl was ⁇ 0.21.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.11.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.07. Further, the value of ⁇ ADDh was ⁇ 0.30, and the value of ⁇ ADDl was ⁇ 0.26. As a result, the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.07.
  • the values of the wearing addition ADD in the lenses having the respective prescription additions were all equal to the prescription addition add, and the object of the present invention could be achieved.
  • Example 9 of the present invention will be described with reference to Table 9.
  • Table 9 shows prescription addition addl for the first progressive addition lens, surface addition ADDb (addl) on the reference surface, surface addition ADDc (addl) on the correction surface, and second progression.
  • the progressive-power lens series according to Example 9 has six progressive-power lenses having prescription additions of 0.75, 1.25, 1.75, 2.25, 2.75, and 3.25. Yes.
  • the progressive-power lens series according to this example has a refractive index n of 1.67, a surface average refractive power PFb at a reference point for distance of the reference surface of 4.39,
  • the distance power S specified by the prescription value is 2.00
  • the astigmatism power C specified by the prescription value is 0.00
  • the surface addition correction amount ACV is 0.75.
  • the lens with the prescription addition of 0.75 has the surface addition of the reference surface of 1.50 and the lens with the prescription addition of 1.25.
  • the reference surface has a surface addition of 2.00
  • the lens with a prescription addition of 1.75 has a reference surface addition of 2.50
  • the lens with a prescription addition of 2.25 has a surface addition of the reference surface.
  • the lens with a prescription addition of 2.75 has a reference surface addition of 3.50
  • the lens with a prescription addition of 3.25 has a reference addition of 4.00. became.
  • the addition of the correction surface of the lens with a prescription addition of 0.75 is -0.88, and the addition of the correction surface of a lens with a prescription addition of 1.25 is -0.93.
  • the surface addition of the correction surface of the lens having a degree of 1.75 is ⁇ 0.97
  • the surface addition of the correction surface of the lens having a prescription addition of 2.25 is ⁇ 1.01
  • the addition of the prescription is 2.
  • the surface addition of the correction surface of the 75 lens was set to -1.06
  • the surface addition of the correction surface of the lens having the prescription addition of 3.25 was set to -1.10.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.10.
  • the value of ⁇ ADDh was ⁇ 0.18, and the value of ⁇ ADDl was ⁇ 0.13.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.10.
  • each column of the second row (2) from the top in Example 9 is as follows.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.09.
  • the value of ⁇ ADDh was ⁇ 0.22, and the value of ⁇ ADD1 was ⁇ 0.18.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.09.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.08.
  • the value of ⁇ ADDh was ⁇ 0.26, and the value of ⁇ ADDl was ⁇ 0.22.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.08.
  • the values shown in the columns of the fourth row (4) from the top in Example 9 are as follows.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.10. Further, the value of ⁇ ADDh was ⁇ 0.31, and the value of ⁇ ADDl was ⁇ 0.26. As a result, the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.10.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.08.
  • the value of ⁇ ADDh was ⁇ 0.35, and the value of ⁇ ADDl was ⁇ 0.31.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.08.
  • Example 10 of the present invention will be described with reference to Table 10.
  • Table 10 shows the prescription addition addl for the first progressive addition lens, the surface addition ADDb (addl) on the reference surface, the surface addition ADDc (addl) on the correction surface, and the second progression as in Tables 7 to 9.
  • Prescription addition addh for the refractive power lens surface addition ADDb (addh) on the reference surface, surface addition correction amount ACV (addl), surface addition ADDc (addh) on the correction surface, second progressive addition power lens
  • Prescription addition addh surface addition ADDb (addh) on the reference surface, surface addition correction amount ACV (addh), surface addition ADDc (addh) on the correction surface, surface addition of the reference surface in the second progressive addition lens
  • the second progressive addition power between the reference addition surface of the first progressive power lens and the reference surface Difference between the addition power of the correction surface in the lens and the addition power of the correction surface in the first progressive addition lens ADDc (addh) ⁇ ADDc (addl), and the difference between these
  • the progressive-power lens series according to Example 10 has six progressive-power lenses with prescription additions of 1.00, 1.50, 2.00, 2.50, 3.00, and 3.50. Yes.
  • the progressive-power lens series according to this example has a refractive index n of 1.67, a surface average refractive power PFb at a reference point for distance of the reference surface of 4.39, In common, the distance power S specified by the prescription value is 0.00, the astigmatism power C specified by the prescription value is 0.00, and the surface addition correction amount ACV is 0.50.
  • the lens with the prescription addition of 1.00 has a surface addition of the reference surface of 1.50 and a lens with the prescription addition of 1.50.
  • the surface addition of the reference plane is 2.00
  • the lens with the prescription addition 2.00 is the surface addition of the reference plane 2.50
  • the lens with the prescription addition 2.50 is the surface addition of the reference plane
  • a lens with a power of 3.00 and a prescription addition of 3.00 has a surface addition of 3.50 on the reference surface
  • a lens with a prescription addition of 3.50 has a surface addition of 4.00 on the reference surface. became.
  • the addition of the correction surface of the lens with a prescription addition of 1.00 is -0.59
  • the addition of the correction surface of a lens with a prescription addition of 1.50 is -0.63.
  • the surface addition of the correction surface of the lens having a degree of 2.00 is ⁇ 0.66
  • the surface addition of the correction surface of the lens having a prescription addition of 2.50 is ⁇ 0.70
  • the prescription addition is 3.
  • the surface addition of the correction surface of the 00 lens was ⁇ 0.74
  • the surface addition of the correction surface of the lens having the prescription addition of 3.50 was ⁇ 0.78.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.07. Further, the value of ⁇ ADDh was ⁇ 0.13, and the value of ⁇ ADDl was ⁇ 0.09. As a result, the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.07.
  • each column of the second row (2) from the top of Example 10 The values shown in each column of the second row (2) from the top of Example 10 are as follows.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.07.
  • the value of ⁇ ADDh was ⁇ 0.16, and the value of ⁇ ADDl was ⁇ 0.13.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.07.
  • the values shown in the columns of the third row (3) from the top of Example 10 are as follows.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.07. Further, the value of ⁇ ADDh was ⁇ 0.20, and the value of ⁇ ADDl was ⁇ 0.16. As a result, the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.07.
  • the values shown in the columns of the fourth row (4) from the top of Example 10 are as follows.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.08.
  • the value of ⁇ ADDh was ⁇ 0.24, and the value of ⁇ ADDl was ⁇ 0.20.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.08.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.07.
  • the value of ⁇ ADDh was ⁇ 0.28, and the value of ⁇ ADD1 was ⁇ 0.24.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.07.
  • the values of the wearing addition ADD in the lenses having the respective prescription additions were all equal to the prescription addition add, and the object of the present invention could be achieved.
  • Example 11 of the present invention will be described with reference to Table 11.
  • Table 11 shows prescription addition addl for the first progressive addition lens, surface addition ADDb (addl) on the reference surface, surface addition ADDc (addl) on the correction surface, and second progression as in Tables 7 to 10.
  • Prescription addition addh for the refractive power lens surface addition ADDb (addh) on the reference surface, surface addition correction amount ACV (addl), surface addition ADDc (addh) on the correction surface, second progressive addition power lens
  • Prescription addition addh surface addition ADDb (addh) on the reference surface, surface addition correction amount ACV (addh), surface addition ADDc (addh) on the correction surface, surface addition of the reference surface in the second progressive addition lens
  • ADDb (addh) ⁇ ADDb (addl) the second progressive refraction, of the reference progressive power of the first progressive power lens
  • the difference between the addition power of the correction surface of the lens and the addition power of the correction surface of the first progressive addition lens is ADDc (addh) ⁇ ADDc (addl), and the difference between these ADDc
  • the progressive-power lens series according to Example 11 has six progressive-power lenses with prescription addition powers of 1.00, 1.50, 2.00, 2.50, 3.00, and 3.50. Yes.
  • the progressive-power lens series according to this example has a refractive index n of 1.67, a surface average refractive power PFb at a reference point for distance of the reference surface of 2.51,
  • the distance power S specified by the prescription value is -1.00
  • the astigmatism power C specified by the prescription value is 0.00
  • the surface addition correction amount ACV is 0.50.
  • the lens with the prescription addition of 1.00 has a surface addition of the reference surface of 1.50 and a lens with the prescription addition of 1.50.
  • the surface addition of the reference plane is 2.00
  • the lens with the prescription addition 2.00 is the surface addition of the reference plane 2.50
  • the lens with the prescription addition 2.50 is the surface addition of the reference plane
  • a lens with a power of 3.00 and a prescription addition of 3.00 has a surface addition of 3.50 on the reference surface
  • a lens with a prescription addition of 3.50 has a surface addition of 4.00 on the reference surface. became.
  • the addition power of the correction surface of the lens having a prescription addition power of 1.00 is ⁇ 0.61
  • the addition power of the correction surface of the lens having a prescription addition power of 1.50 is ⁇ 0.65.
  • the surface addition of the correction surface of the lens having a degree of 2.00 is ⁇ 0.70
  • the surface addition of the correction surface of the lens having a prescription addition of 2.50 is ⁇ 0.75
  • the prescription addition is 3.
  • the surface addition of the correction surface of the 00 lens was ⁇ 0.79
  • the surface addition of the correction surface of the lens having the prescription addition of 3.50 was ⁇ 0.83.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.10. Further, the value of ⁇ ADDh was ⁇ 0.15, and the value of ⁇ ADDl was ⁇ 0.11. As a result, the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.10.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.09. Further, the value of ⁇ ADDh was ⁇ 0.20, and the value of ⁇ ADDl was ⁇ 0.15. As a result, the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.09.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.09.
  • the value of ⁇ ADDh was ⁇ 0.25, and the value of ⁇ ADDl was ⁇ 0.20.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.09.
  • the values shown in the columns of the fourth row (4) from the top of Example 11 are as follows.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.08.
  • the value of ⁇ ADDh was ⁇ 0.29
  • the value of ⁇ ADDl was ⁇ 0.25.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.08.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.08.
  • the value of ⁇ ADDh was ⁇ 0.33, and the value of ⁇ ADDl was ⁇ 0.29.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.08.
  • the values of the wearing addition ADD in the lenses having the respective prescription additions were all equal to the prescription addition add, and the object of the present invention could be achieved.
  • Example 12 of the present invention will be described with reference to Table 12.
  • Table 12 is similar to Tables 7 to 11 in that the prescription addition addl for the first progressive addition lens, the surface addition ADDb (addl) on the reference surface, the surface addition ADDc (addl) on the correction surface, and the second progression Prescription addition addh for the refractive power lens, surface addition ADDb (addh) on the reference surface, surface addition ADDc (addh) on the correction surface, surface addition and first progressive refraction on the reference surface in the second progressive addition lens Difference ADDb (addh) ⁇ ADDb (addl) from the surface addition of the reference surface in the power lens, surface addition of the correction surface in the second progressive addition lens, and surface addition of the correction surface in the first progressive addition lens Difference ADDc (addh) ⁇ ADDc (addl), and the difference between ADDc (addh) and ADDc (addl) The value normalized by the difference from ddl, ⁇ ADDh represented by ADDb (addh) + ADDc (addh) ⁇ addh, ⁇ ADDl represented by ADD
  • the progressive-power lens series according to Example 12 has six progressive-power lenses having prescription additions of 0.75, 1.25, 1.75, 2.25, 2.75, and 3.25. Yes.
  • the progressive-power lens series according to the present example has a refractive index n of 1.67, a surface average refractive power PFb at a reference point for distance of the reference surface of 2.51,
  • the distance power S specified by the prescription value is -5.00
  • the astigmatism power C specified by the prescription value is 0.00
  • the surface addition correction amount ACV is 0.75.
  • the lens with the prescription addition of 0.75 has the surface addition of the reference surface of 1.50 and the lens with the prescription addition of 1.25.
  • the reference surface has a surface addition of 2.00
  • the lens with a prescription addition of 1.75 has a reference surface addition of 2.50
  • the lens with a prescription addition of 2.25 has a surface addition of the reference surface.
  • the lens with a prescription addition of 2.75 has a reference surface addition of 3.50
  • the lens with a prescription addition of 3.25 has a reference addition of 4.00. became.
  • the addition of the correction surface of the lens having a prescription addition of 0.75 is ⁇ 0.94, and the addition of the correction surface of the lens having a prescription addition of 1.25 is ⁇ 0.98.
  • the addition power of the correction surface of the lens having a degree of 1.75 is ⁇ 1.02
  • the addition power of the correction surface of the lens having a prescription addition of 2.25 is ⁇ 1.06, and the addition power of the prescription is 2.2.
  • the surface addition of the correction surface of the 75 lens was set to ⁇ 1.10
  • the surface addition of the correction surface of the lens having the prescription addition of 3.25 was set to ⁇ 1.13.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.09. Further, the value of ⁇ ADDh was ⁇ 0.23, and the value of ⁇ ADDl was ⁇ 0.19. As a result, the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.09.
  • each column of the second row (2) from the top of Example 12 is as follows.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.08.
  • the value of ⁇ ADDh was ⁇ 0.27
  • the value of ⁇ ADDl was ⁇ 0.23.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.08.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.08.
  • the value of ⁇ ADDh was ⁇ 0.31, and the value of ⁇ ADD1 was ⁇ 0.27.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.08.
  • the values shown in the columns of the fourth row (4) from the top of Example 12 are as follows.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.08.
  • the value of ⁇ ADDh was ⁇ 0.35, and the value of ⁇ ADDl was ⁇ 0.31.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.08.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.06.
  • the value of ⁇ ADDh was ⁇ 0.38, and the value of ⁇ ADDl was ⁇ 0.35.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.06.
  • the values of the wearing addition ADD in the lenses having the respective prescription additions were all equal to the prescription addition add, and the object of the present invention could be achieved.
  • Example 13 of the present invention will be described with reference to Table 13.
  • Table 13 is similar to Tables 7 to 12 in that the prescription addition addl for the first progressive addition lens, the surface addition ADDb (addl) on the reference surface, the surface addition ADDc (addl) on the correction surface, and the second progression Prescription addition addh for the refractive power lens, surface addition ADDb (addh) on the reference surface, surface addition ADDc (addh) on the correction surface, surface addition and first progressive refraction on the reference surface in the second progressive addition lens Difference ADDb (addh) ⁇ ADDb (addl) from the surface addition of the reference surface in the power lens, surface addition of the correction surface in the second progressive addition lens, and surface addition of the correction surface in the first progressive addition lens Difference ADDc (addh) ⁇ ADDc (addl), and the difference between ADDc (addh) and ADDc (addl) The value normalized by the difference from ddl, ⁇ ADDh represented by ADDb (addh) + ADDc (addh) ⁇ addh, ⁇ ADDl represented by ADD
  • the progressive-power lens series according to Example 13 has six progressive-power lenses with prescription additions of 0.75, 1.25, 1.75, 2.25, 2.75, and 3.25. Yes.
  • the progressive-power lens series according to this example has a refractive index n of 1.67, a surface average refractive power PFb at a distance reference point of the reference surface of 1.25,
  • the distance power S specified by the prescription value is ⁇ 7.00
  • the astigmatism power C specified by the prescription value is 0.00
  • the surface addition correction amount ACV is 0.75.
  • the lens with the prescription addition of 0.75 has the surface addition of the reference surface of 1.50 and the lens with the prescription addition of 1.25.
  • the reference surface has a surface addition of 2.00
  • the lens with a prescription addition of 1.75 has a reference surface addition of 2.50
  • the lens with a prescription addition of 2.25 has a surface addition of the reference surface.
  • the lens with a prescription addition of 2.75 has a reference surface addition of 3.50
  • the lens with a prescription addition of 3.25 has a reference addition of 4.00. became.
  • the addition of the correction surface of the lens with a prescription addition of 0.75 is ⁇ 0.97
  • the addition of the correction surface of a lens with a prescription addition of 1.25 is ⁇ 1.03.
  • the surface addition of the correction surface of the lens having a degree of 1.75 is set to -1.09
  • the surface addition of the correction surface of the lens having a prescription addition of 2.25 is set to -1.14
  • the addition of the prescription is 2.
  • the surface addition of the correction surface of the 75 lens was set to ⁇ 1.18, and the surface addition of the correction surface of the lens having the prescription addition of 3.25 was set to ⁇ 1.23.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.12.
  • the value of ⁇ ADDh was ⁇ 0.28, and the value of ⁇ ADDl was ⁇ 0.22.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.12.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.11.
  • the value of ⁇ ADDh was ⁇ 0.34, and the value of ⁇ ADDl was ⁇ 0.28.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.11.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.10. Further, the value of ⁇ ADDh was ⁇ 0.39, and the value of ⁇ ADDl was ⁇ 0.34. As a result, the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.10.
  • the values shown in the columns of the fourth row (4) from the top of Example 13 are as follows.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.10. Further, the value of ⁇ ADDh was ⁇ 0.43, and the value of ⁇ ADDl was ⁇ 0.39. As a result, the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.10.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.10.
  • the value of ⁇ ADDh was ⁇ 0.48, and the value of ⁇ ADDl was ⁇ 0.43.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.10.
  • the values of the wearing addition ADD in the lenses having the respective prescription additions were all equal to the prescription addition add, and the object of the present invention could be achieved.
  • Example 14 of the present invention will be described with reference to Table 14.
  • Table 14 is the same as Tables 7 to 13 in that the prescription addition addl for the first progressive addition lens, the surface addition ADDb (addl) on the reference surface, the surface addition ADDc (addl) on the correction surface, and the second progression Prescription addition addh for the refractive power lens, surface addition ADDb (addh) on the reference surface, surface addition ADDc (addh) on the correction surface, surface addition and first progressive refraction on the reference surface in the second progressive addition lens Difference ADDb (addh) ⁇ ADDb (addl) from the surface addition of the reference surface in the power lens, surface addition of the correction surface in the second progressive addition lens, and surface addition of the correction surface in the first progressive addition lens Difference ADDc (addh) ⁇ ADDc (addl), and the difference between ADDc (addh) and ADDc (addl) The value normalized by the difference from ddl, ⁇ ADDh represented by ADDb (addh) + ADDc (addh) ⁇ addh, ⁇ ADDl represented by
  • the progressive-power lens series according to Example 14 has six progressive-power lenses with prescription addition powers of 1.00, 1.50, 2.00, 2.50, 3.00, and 3.50. Yes.
  • the progressive-power lens series according to the present embodiment has a refractive index n of 1.67, a surface average refractive power PFb at a distance reference point of the reference surface of 1.25,
  • the distance power S specified by the prescription value is -10.00, the astigmatism power C specified by the prescription value is 0.00, and the surface addition correction amount ACV is 0.50.
  • the lens with the prescription addition of 1.00 has a surface addition of the reference surface of 1.50 and a lens with the prescription addition of 1.50.
  • the surface addition of the reference plane is 2.00
  • the lens with the prescription addition 2.00 is the surface addition of the reference plane 2.50
  • the lens with the prescription addition 2.50 is the surface addition of the reference plane
  • a lens with a power of 3.00 and a prescription addition of 3.00 has a surface addition of 3.50 on the reference surface
  • a lens with a prescription addition of 3.50 has a surface addition of 4.00 on the reference surface. became.
  • the addition power of the correction surface of the lens having a prescription addition power of 1.00 is ⁇ 0.96, and the addition power of the correction surface of the lens having a prescription addition power of 1.50 is ⁇ 1.03.
  • the surface addition of the correction surface of the lens having a degree of 2.00 is ⁇ 1.08, the surface addition of the correction surface of the lens having a prescription addition of 2.50 is ⁇ 1.15, and the prescription addition is 3.
  • the surface addition of the correction surface of the 00 lens was set to ⁇ 1.19, and the surface addition of the correction surface of the lens having the prescription addition of 3.50 was set to ⁇ 1.24.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.14.
  • the value of ⁇ ADDh was ⁇ 0.53, and the value of ⁇ ADDl was ⁇ 0.46.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.14.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.12.
  • the value of ⁇ ADDh was ⁇ 0.58, and the value of ⁇ ADDl was ⁇ 0.53.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.12.
  • the values shown in the columns of the third row (3) from the top of Example 14 are as follows.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.13.
  • the value of ⁇ ADDh was ⁇ 0.65, and the value of ⁇ ADDl was ⁇ 0.58.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.13.
  • the values shown in the columns of the fourth row (4) from the top of Example 14 are as follows.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.10.
  • the value of ⁇ ADDh was ⁇ 0.69
  • the value of ⁇ ADDl was ⁇ 0.65.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.10.
  • the difference ADDc (addh) ⁇ ADDc (addl) between the addition power of the correction surface of the second progressive addition lens and the addition surface of the correction surface of the first progressive addition lens is expressed as addh.
  • the value normalized by the difference from addl was -0.09.
  • the value of ⁇ ADDh was ⁇ 0.74, and the value of ⁇ ADDl was ⁇ 0.69.
  • the value obtained by normalizing the difference between ⁇ ADDh and ⁇ ADDl by the difference between the addition addh and the addition addl was ⁇ 0.09.
  • the values of the wearing addition ADD in the lenses having the respective prescription additions were all equal to the prescription addition add, and the object of the present invention could be achieved.
  • the distance power S (add) designated by the prescription value is equal between the first progressive power lens and the second progressive power lens among the plurality of progressive power lenses LS, and the prescription value
  • the surface addition ADDb (addh) of the reference surface of the second progressive addition lens having the same specified astigmatism power C (add) and the large addition add specified by the prescription is the first progression with the small addition add.
  • the difference between the surface addition ADDc (addh) and the surface addition ADDc (addl) of the correction surface M2 as the prescription addition add increases when the surface addition ADDb (addl) of the reference surface of the refractive power lens is larger.

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  • Ophthalmology & Optometry (AREA)
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Abstract

Entre une première lentille à puissance progressive et une deuxième lentille à puissance progressive parmi une pluralité de lentilles à puissance progressive, lorsque les puissances pour vision de loin (S) spécifiées par des valeurs d'ordonnance sont égales les unes aux autres et ne sont pas inférieures à zéro, les puissances astigmatiques (C) spécifiées par les valeurs d'ordonnance sont égales les unes aux autres et les puissances d'addition de surfaces (ADDb) de surfaces de référence sont égales les unes aux autres, on effectue un réglage de telle manière que la différence entre ?ADDh et ?ADDl diminue à mesure qu'augmente la puissance d'addition spécifiée par la valeur d'ordonnance.
PCT/JP2009/005353 2008-10-14 2009-10-14 Lentille à puissance progressive Ceased WO2010044260A1 (fr)

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WO1997019383A1 (fr) * 1995-11-24 1997-05-29 Seiko Epson Corporation Lentilles multifocales pour lunettes et verre de lunettes
WO2008010504A1 (fr) * 2006-07-20 2008-01-24 Nikon-Essilor Co., Ltd. Procédé de conception d'un verre à réfraction progressive, procédé de fabrication de ce verre, et système fournissant un verre de lunettes
JP2008116510A (ja) * 2006-10-31 2008-05-22 Hoya Corp 累進屈折力眼鏡レンズ用セミフィニッシュレンズ及び累進屈折力眼鏡レンズ

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WO1997019383A1 (fr) * 1995-11-24 1997-05-29 Seiko Epson Corporation Lentilles multifocales pour lunettes et verre de lunettes
WO2008010504A1 (fr) * 2006-07-20 2008-01-24 Nikon-Essilor Co., Ltd. Procédé de conception d'un verre à réfraction progressive, procédé de fabrication de ce verre, et système fournissant un verre de lunettes
JP2008116510A (ja) * 2006-10-31 2008-05-22 Hoya Corp 累進屈折力眼鏡レンズ用セミフィニッシュレンズ及び累進屈折力眼鏡レンズ

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Publication number Priority date Publication date Assignee Title
JPWO2015125868A1 (ja) * 2014-02-20 2017-03-30 株式会社ニコン 眼鏡レンズ設計方法、眼鏡レンズ製造方法、眼鏡レンズ、眼鏡レンズ設計システム、眼鏡レンズ設計プログラムおよび記録媒体
US10126566B2 (en) 2014-02-20 2018-11-13 Nikon Corporation Eyeglass lens design method, eyeglass lens manufacturing method, eyeglass lens, eyeglass lens design system, eyeglass lens design program, and recording medium

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