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WO2012131739A1 - Verre composite polarisant présentant une protection élevée contre les rayons infrarouges - Google Patents

Verre composite polarisant présentant une protection élevée contre les rayons infrarouges Download PDF

Info

Publication number
WO2012131739A1
WO2012131739A1 PCT/IT2012/000080 IT2012000080W WO2012131739A1 WO 2012131739 A1 WO2012131739 A1 WO 2012131739A1 IT 2012000080 W IT2012000080 W IT 2012000080W WO 2012131739 A1 WO2012131739 A1 WO 2012131739A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
polarizing
compound lens
radiations
polarizing compound
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/IT2012/000080
Other languages
English (en)
Inventor
Gianni Vetrini
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.)
Barberini SpA
Original Assignee
Barberini SpA
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
Application filed by Barberini SpA filed Critical Barberini SpA
Publication of WO2012131739A1 publication Critical patent/WO2012131739A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/12—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C2202/00—Generic optical aspects applicable to one or more of the subgroups of G02C7/00
    • G02C2202/16—Laminated or compound lenses

Definitions

  • the present invention relates to a polarizing compound lens with high protection against infrared rays.
  • the present invention concerns a compound lens of the polarizing type, to be used either on sunglasses or for manufacturing polarizing semi-finished products to then manufacturing ophthalmic lenses.
  • polarizing lenses In order to obviate to said trouble, polarizing lenses have been developed, permitting filtering direct light and preventing, according to the efficiency, polarized reflex light which is particularly annoying.
  • polarizing lenses are realized by employing a plastic material having a particular molecular structure, suitably subjected to treatment and able letting only not polarized light passing.
  • Said plastic material can make up the same lens, or it can be an ultrathin film glued between two slim glass lenses.
  • Said last method is preferred since it is more precise and maintains a geometrical stability of the lens, obtaining a null optical power value.
  • Said rules classify lenses in different categories, on the basis of the radiation absorption within the visible wavelength range.
  • said rules provide that percentage of absorption of infrared radiations must not be lower than percentage absorption of visible radiations.
  • sun protection lenses remarkably reducing luminosity within visible radiation range, causing an increase of eye sensitivity by a larger expansion of pupil and a higher physical exposition of the eye (i.e. eyelids are more open and more viewing luminous zone, just because attenuate by lenses.
  • glasses are used having a material having homogeneous absorption curves, in other words permitting either an absorption within the visible range and within the infrared range; otherwise, simple surface coating treatment are made to improve said performances.
  • rules are easily fulfilled.
  • Global result of polarizing lens is such to mostly absorb visible radiations with respect to infrared radiations, without fulfilling the rule requirements.
  • a polarizing compound lens both for use on sunglasses, and for semifinished polarizing products for the subsequent production of ophthalmic lenses
  • said polarizing compound lens comprising an outer lens, an inner lens and at least one polarizing film interposed between the lenses, said polarizing compound lens being characterized in that said inner lens is made of glass with a high protection from infrared radiations.
  • said polarizing compound lens can be used for the production of ophthalmic lenses.
  • said inner lens is made of glass with a protection of up to 95% of the infrared radiations in the range from 780 to 2000 nm.
  • said outer lens has a transmission between 20% and 100%.
  • said outer lens is made of standard colored glass and / or high contrast (REE) and / or photo chromic and / or of special composition suitable for the desired optical performance.
  • REE high contrast
  • said polarizing film can have transmission between 17% and 40% in the visible spectrum.
  • said polarizing film can be made of ultrathin plastic.
  • said polarizing film can have a UV radiation protection.
  • said outer lens and said inner lens can be glued to said film by resins of various kinds.
  • said resins can contain a filter for blocking UV radiations.
  • said resins can contain a filter for blocking UV radiations up to 410nm.
  • outer coatings can be applied on the surface of said outer lens.
  • said outer coatings can be mirror or opaque and / or of various constants colors or degrading colors deposited in vacuum or multilayer systems.
  • inner coatings can be applied on the surface of said inner lens.
  • said inner coatings can be made of 10 reflective layers, for obtaining a reflection of light with less than 1% reflection in the UV radiations.
  • hydro-hydrophobic coatings can be applied to the entire surface of said polarizing compound lens.
  • said inner lens can be made of glass with a protection of up to
  • said outer lens can have a transmission between 20% and 100%;
  • said outer lens can be made of standard colored glass and / or high contrast (REE) and / or photo chromic and / or of special composition suitable for the desired optical performance;
  • said polarizing film can have a transmission between 17% and 40% in the visible spectrum;
  • said polarizing film can be made of ultrathin plastic and has a UV radiation protection
  • said outer lens and said inner lens can be glued to said film by resins containing a filter for blocking UV radiations up to 410nm;
  • outer coatings are applied on the surface of said outer lens and can be mirror or opaque and / or of various constants colors or degrading colors deposited in vacuum or multilayer systems;
  • - inner coatings can be applied on the surface of said inner lens and are made of 10 reflective layers, for obtaining a reflection of light with less than 1% reflection in the UV radiations;
  • - hydro-hydrophobic coatings can be applied on the entire surface of said polarizing compound lens.
  • figure 1 shows curve of transmission of electromagnetic radiations emitted by a standard glass lens with respect to wavelength
  • figure 2 shows curve of transmission of electromagnetic radiations emitted by a high infrared protection standard glass lens with respect to wavelength
  • figure 3 shows curve of transmission of electromagnetic radiations emitted by a "dark" sun protective standard glass lens with respect to wavelength
  • figure 4 is a perspective exploded view of a standard glass polarizing lens
  • figure 5 is a cross-section of lens of figure 4.
  • figure 6 shows curve of transmission of electromagnetic radiations emitted by polarizing sun protective lens of figure 4with respect to wavelength
  • figure 7 is a perspective exploded view of a compound polarizing lens with high protection with respect to IR according to the invention.
  • figure 8 is a cross-section of lens of figure 7;
  • figure 9 shows curve of transmission of electromagnetic radiations emitted by lens of figure 7 with respect to wavelength
  • figure 10 shows curve of transmission of electromagnetic radiations emitted by an anti reflex coating applied on a standard lens with respect to wavelength between 280 and 780 nm.
  • known polarizing lenses are comprised by interposing an ultrathin polarizing film 4 between an outer lens 2, made up of "dark” glass for protection against sun, and an inner lens 3, made up of traditional glass. More particularly, known method for realizing- a polarizing lens provides:
  • said lens is comprised of:
  • an outer lens 12 preferably comprised of colored glass, with transmission properties between 20 and 100%.
  • Said lens can have different optical features, such as high contrast (rare earths), photo chromatic features, with particular transmission curves suitable to wished optical performance,
  • outer coating treatments 16 applied on outer glass lens 12, said coating being uniform or with mirror or opaque features, having different colors, deposited by under vacuum system or by multilayer system,
  • a resin layer 15 preferably comprising a filter for blocking UV radiation up to 410 nm and more
  • Said film can have UV protection properties, regardless resin properties,
  • - inner lens 13 made up of a glass lens with high properties of intercepting infrared radiation (IR) up to 95% between 980 nm and 2000 nm,
  • ratio between infrared radiations and visible radiations is strongly reduced.
  • the above permits fulfilling requirements for sun protective lenses, but mainly prevents dangerous situations, since an optimum protection within infrared filed is added to the comfort of the "dark" lens within the visible field.
  • - outer glass lens made up of colored glass, with different colors, having a transmission between 20% and 100%, with different optical features on the basis of the chosen composition, and having a high contrast (Rare Earths), photo chromatic features, glass lens with a special composition with particular transmission curves suitable to the wished optical performances;
  • outer coatings of outer glass lens which are uniform or degrading and/or with nuances, mirror or opaque, of various colors deposited in vacuum or multilayer systems;
  • - inner glass lens comprised of a glass having high capability of intercepting infrared radiation (IR) up to 95% and more within the 780 nm

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)
  • Polarising Elements (AREA)
  • Optical Filters (AREA)

Abstract

La présente invention se rapporte à un verre composite polarisant (10) destiné à être utilisé à la fois sur des lunettes de soleil et pour des produits polarisants semi-finis pour permettre une production ultérieure de verres ophtalmiques, ledit verre composite polarisant (10) comprenant un verre externe (12), un verre interne (13) et au moins un film de polarisation (14) intercalé entre les verres, ledit verre composite polarisant (10) étant caractérisé en ce que ledit verre interne (13) est composé de verre présentant une protection élevée contre les rayonnements infrarouges.
PCT/IT2012/000080 2011-03-29 2012-03-22 Verre composite polarisant présentant une protection élevée contre les rayons infrarouges Ceased WO2012131739A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRM2011A000159 2011-03-29
IT000159A ITRM20110159A1 (it) 2011-03-29 2011-03-29 Lente composta polarizzante ad alta protezione infrarossa.

Publications (1)

Publication Number Publication Date
WO2012131739A1 true WO2012131739A1 (fr) 2012-10-04

Family

ID=43977387

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2012/000080 Ceased WO2012131739A1 (fr) 2011-03-29 2012-03-22 Verre composite polarisant présentant une protection élevée contre les rayons infrarouges

Country Status (2)

Country Link
IT (1) ITRM20110159A1 (fr)
WO (1) WO2012131739A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160195905A1 (en) * 2015-01-07 2016-07-07 Samsung Display Co., Ltd. Display device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2370697A (en) * 1940-09-13 1945-03-06 American Optical Corp Optical means
GB583842A (en) * 1941-01-21 1947-01-01 Polaroid Corp Improvements in or relating to combined light-filtering and light-polarizing means
US5135298A (en) * 1990-09-12 1992-08-04 Feltman Francis L Sunglass lens
WO1999054118A1 (fr) * 1998-04-17 1999-10-28 Barberini S.P.A. Systeme et procede de collage automatique de lentilles de polarisation
US6315411B1 (en) * 1999-10-21 2001-11-13 Sporoptic Pouilloux Eyesight protective composite glass
US20050018131A1 (en) * 2001-11-02 2005-01-27 Andrew Ishak Rugate lens for glasses

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2370697A (en) * 1940-09-13 1945-03-06 American Optical Corp Optical means
GB583842A (en) * 1941-01-21 1947-01-01 Polaroid Corp Improvements in or relating to combined light-filtering and light-polarizing means
US5135298A (en) * 1990-09-12 1992-08-04 Feltman Francis L Sunglass lens
WO1999054118A1 (fr) * 1998-04-17 1999-10-28 Barberini S.P.A. Systeme et procede de collage automatique de lentilles de polarisation
US6315411B1 (en) * 1999-10-21 2001-11-13 Sporoptic Pouilloux Eyesight protective composite glass
US20050018131A1 (en) * 2001-11-02 2005-01-27 Andrew Ishak Rugate lens for glasses

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160195905A1 (en) * 2015-01-07 2016-07-07 Samsung Display Co., Ltd. Display device
US9874907B2 (en) * 2015-01-07 2018-01-23 Samsung Display Co., Ltd. Display device

Also Published As

Publication number Publication date
ITRM20110159A1 (it) 2012-09-30

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