CN117666167A - Microlens frame mirror and preparation method thereof - Google Patents
Microlens frame mirror and preparation method thereof Download PDFInfo
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- CN117666167A CN117666167A CN202410089232.2A CN202410089232A CN117666167A CN 117666167 A CN117666167 A CN 117666167A CN 202410089232 A CN202410089232 A CN 202410089232A CN 117666167 A CN117666167 A CN 117666167A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 6
- 238000000034 method Methods 0.000 claims description 24
- 238000004512 die casting Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 27
- 230000004379 myopia Effects 0.000 abstract description 15
- 208000001491 myopia Diseases 0.000 abstract description 15
- 230000003111 delayed effect Effects 0.000 abstract description 4
- 210000001508 eye Anatomy 0.000 description 27
- 210000001525 retina Anatomy 0.000 description 13
- 230000003287 optical effect Effects 0.000 description 7
- 230000004438 eyesight Effects 0.000 description 4
- 230000004515 progressive myopia Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 210000002159 anterior chamber Anatomy 0.000 description 2
- 210000004087 cornea Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004423 myopia development Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 208000012868 Overgrowth Diseases 0.000 description 1
- 210000005252 bulbus oculi Anatomy 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004402 high myopia Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
- 230000002207 retinal effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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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
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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
- G02C7/022—Ophthalmic lenses having special refractive features achieved by special materials or material structures
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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
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- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Eyeglasses (AREA)
Abstract
The embodiment of the invention discloses a microlens frame mirror and a preparation method thereof, and relates to the technical field of optics. The microlens frame mirror includes: the central lens comprises a first lens body and a plurality of first microlenses arranged on one side surface of the first lens body; the base lens comprises a second lens body and a plurality of second microlenses arranged on one side surface of the second lens body; the base lens is provided with a groove, at least part of the central lens is arranged in the groove, and the coverage area of the central lens is smaller than that of the base lens. According to the microlens frame lens provided by the embodiment of the invention, myopia defocus is generated through the microlenses on the surfaces of the central lens and the base lens, the myopia progress is delayed, meanwhile, the microlens frame lens can be customized according to the requirements of users and eye conditions, the manufacturing cost is reduced, and the manufacturing efficiency is improved.
Description
Technical Field
The invention relates to the technical field of optics, in particular to a micro-lens frame mirror and a preparation method thereof.
Background
Myopia is an optical condition of the eye in which images of distant objects are focused in front of the fovea or retina, and overgrowth of the axis of the eye often results in high myopia. In the prior art, microlenses are used to distribute over or between the surface or layers of the frame lens to create peripheral retinal myopia defocus for myopia control.
At present, the frame mirror with the micro lenses is usually produced in a die casting mode, however, due to the high cost of die opening, only a small number of product types can be produced, and the requirements of different patients cannot be met. Although turning processes can also be used to machine frame mirror lenses, the lathe precision typically used to turn large lenses is low enough to handle the microlenses, and the number of microlenses typically reaches hundreds to thousands, both the time and wear costs of the microlenses being turned using the lathe are extremely high. Thus, there is a need to produce a microlens frame mirror that is low cost while meeting different patient needs.
Disclosure of Invention
The embodiment of the invention provides a micro-lens frame mirror and a preparation method thereof, which can customize the micro-lens frame mirror according to the requirements of users and eye conditions, reduce the manufacturing cost and improve the manufacturing efficiency.
According to an aspect of the present invention, there is provided a microlens frame mirror including:
the central lens comprises a first lens body and a plurality of first microlenses arranged on one side surface of the first lens body;
the base lens comprises a second lens body and a plurality of second microlenses arranged on one side surface of the second lens body;
the base lens is provided with a groove, at least part of the central lens is arranged in the groove, and the coverage area of the central lens is smaller than that of the base lens.
Optionally, the central lens includes a first surface and a second surface disposed opposite to each other, the first surface and the second surface being sequentially located on a propagation path of ambient light;
the base lens comprises a third surface and a fourth surface which are oppositely arranged, the third surface and the fourth surface are sequentially positioned on the propagation path of the ambient light, and the groove penetrates through the third surface;
the second surface is positioned in the groove, the first surface and the third surface are combined to form a smooth surface, and the curvature radius of the first surface and the curvature radius of the third surface are the same.
Optionally, the central lens includes a first surface and a second surface disposed opposite to each other, the first surface and the second surface being sequentially located on a propagation path of ambient light;
the base lens comprises a third surface and a fourth surface which are oppositely arranged, the third surface and the fourth surface are sequentially positioned on the propagation path of the ambient light, and the groove penetrates through the fourth surface;
the first surface is positioned in the groove, the second surface and the fourth surface are combined to form a smooth surface, and the curvature radius of the second surface is the same as that of the fourth surface.
Optionally, the first microlenses are disposed on the first surface and protrude toward a side away from the second surface;
or, the first micro-lens is arranged on the second surface and protrudes towards one side of the first surface.
Optionally, the first microlenses are disposed on the second surface and protrude toward a side away from the first surface.
Optionally, the thickness of the central lens is less than or equal to the thickness of the base lens.
Optionally, the edge of the central lens is provided with a protrusion, the edge of the groove of the base lens is provided with a clamping groove, and the protrusion is embedded into the clamping groove;
alternatively, the edge of the center lens has a first thread and the groove edge of the base lens has a second thread, the first thread and the second thread forming a threaded connection.
Optionally, the diameter d1 of the central lens satisfies 5 mm.ltoreq.d1.ltoreq.20mm.
Optionally, the shape of the first micro lens includes at least one of a sphere, an aspherical surface and an axicon, and the first micro lens is distributed on the surface of the first lens body in a ring shape or a polygon shape;
the shape of the second micro lens comprises at least one of a spherical surface, an aspherical surface and an axicon, and the second micro lens is distributed on the surface of the second lens body in a ring shape or a polygon shape.
According to another aspect of the present invention, there is provided a method of manufacturing a microlens frame mirror for manufacturing the microlens frame mirror as set forth in any one of the above, comprising:
preparing a central lens by using a lathe process, wherein the central lens comprises a first lens body and a plurality of first microlenses arranged on one side surface of the first lens body;
preparing a base lens by using a die casting process, wherein the base lens comprises a second lens body and a plurality of second microlenses arranged on one side surface of the second lens body; the footprint of the central lens is smaller than the footprint of the base lens;
preparing a groove in the base lens, and combining the central lens and the base lens such that at least a portion of the central lens is disposed within the groove, forming a microlens frame lens.
According to the micro-lens frame mirror provided by the embodiment of the invention, the micro-lens frame mirror is provided with the micro-lenses on one side surface of the central lens and one side surface of the base lens, the first micro-lens and the second micro-lens control focusing of light entering the user when the central lens and the base lens provide clear vision for the user, so that myopia defocus is generated before the light is focused on retina of the user, the growth of an eye axis is controlled, the myopia development is slowed down, meanwhile, the base lens is provided with the groove, at least part of the central lens is arranged in the groove of the base lens, namely, the central lens and the base lens are independently arranged, therefore, the central lens and the base lens can be customized according to the requirements and eye conditions of the user, the manufacturing cost is reduced, and the manufacturing efficiency is improved.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic side view of a first microlens frame mirror according to an embodiment of the present invention;
FIG. 2 is a schematic side view of a second microlens frame mirror according to an embodiment of the present invention;
FIG. 3 is a schematic side view of a third microlens frame mirror according to an embodiment of the present invention;
FIG. 4 is a schematic side view of a fourth microlens frame mirror according to an embodiment of the present invention;
fig. 5 is a flowchart of a method for manufacturing a microlens frame mirror according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic side view of a first microlens frame mirror according to an embodiment of the present invention, and referring to fig. 1, the microlens frame mirror includes a central lens 10 and a base lens 20. Wherein, the central lens 10 comprises a first lens 101 body and a plurality of first microlenses 102 arranged on one side surface of the first lens 101 body; the base lens 20 includes a second lens 201 body and a plurality of second microlenses 202 disposed on one side surface of the second lens 201 body; the base lens 20 is provided with a groove, at least part of the central lens 10 is arranged in the groove, and the coverage area of the central lens 10 is smaller than that of the base lens 20.
Specifically, the micro lens is an optical lens with a small diameter, and has the characteristics of small volume, light weight and high integration level. When the ambient light is incident on eyes of a user through the micro lens frame lens, the central lens 10 and the base lens 20 control the light to be focused on retina of the user, so that the user obtains clear view; the first and second microlenses 102, 202 control focusing of light entering the eyes of the user, so that the light transmitted through the first and second microlenses 102, 202 is focused in front of the retina of the user, resulting in myopia defocus, controlling eye axis growth, and slowing myopia progression.
Specifically, the central optic 10 is disposed independently of the base optic 20, e.g., at least a portion of the central optic 10 is disposed within a groove of the base optic 20, and the central optic 10 and the base optic 20 combine to form a complete optic of the microlens frame. And the setting mode of the central lens 10 can be flexibly replaced according to the actual requirements of users so as to meet different focusing requirements.
Further, since the central lens 10 and the base lens 20 are separately disposed, the central lens 10 and the base lens 20 can be separately manufactured according to the requirement, for example, the central lens 10 can be machined with high precision, and the central lens 10 with high precision can be obtained without requiring high cost due to the flexible arrangement of the diameter, addition degree, and other properties of the first microlens 102 according to the cornea curvature, anterior chamber depth, and tolerance to the microlens of different users. For example, the base lens 20 may be manufactured using a simple molding process that increases manufacturing efficiency.
It is understood that the first microlenses 102 are microlenses disposed on the surface of the central optic 10, and that the first microlenses 102 may include one or more different shapes and types of microlenses, rather than being limited in shape and type to the first microlenses 102. Also, the second microlenses 202 are microlenses disposed on the surface of the base lens 20, rather than limiting the shape and type of the second microlenses 202, the second microlenses 202 can comprise one or more different shapes and types of microlenses.
Alternatively, the shape of the first microlens 102 may include at least one of a sphere, an aspherical surface, and an axicon, and the first microlens 102 is distributed on the surface of the body of the first lens 101 in a ring shape or a polygon shape; the shape of the second micro lens 202 includes at least one of a sphere, an aspherical surface and an axicon, and the second micro lens 202 is distributed on the surface of the second lens body in a ring shape or a polygon shape. The axicon is a special lens with a conical surface, the axicon structure can convert light beams into light spots distributed annularly, different light beam modes can be generated by combining the axicon with other axicon or lenses, the axicon can scatter light entering eyes of a user, imaging contrast ratio on retina is reduced, and the light is focused in front of the retina. The shapes and arrangement forms of the first microlenses 102 and the second microlenses 202 can be set according to actual requirements, so as to meet different user requirements and eyeball conditions, which is not particularly limited by the present invention.
According to the microlens frame lens provided by the embodiment of the invention, the plurality of microlenses are arranged on the surface of one side of the central lens and the surface of one side of the base lens, and the first microlenses and the second microlenses control the focusing of light rays entering a user when the central lens and the base lens provide clear visual fields for the user, so that myopia defocus is generated before the light rays are focused on the retina of the user, the growth of an eye axis is controlled, and the development of myopia is slowed down; meanwhile, the groove is formed in the base lens, at least part of the central lens is arranged in the groove of the base lens, namely, the central lens and the base lens are independently arranged, so that the central lens and the base lens can customize the micro lens frame lens according to the requirements of users and eye conditions, the manufacturing cost is reduced, and the manufacturing efficiency is improved.
Alternatively, the central lens 10 may be circular or polygonal or irregular, ensuring that the central lens 10 is capable of adapting to a variety of different ocular conditions and user requirements. The geometric center of the center lens 10 may be located at the optical center of the microlens frame lens so that the center lens 10 covers the pupil area of the user to provide clear central vision for the user, and the center lens 10 may be disposed at a position offset from the center area of the microlens frame lens, with no particular limitation on the shape and position of the center lens 10. In one embodiment, the optical center of the central optic 10 coincides with the optical center of the microlens frame mirror, and the central optic 10 is disposed in the central region of the microlens frame mirror to provide a clear central field of view to the user.
Optionally, the central lens 10 includes a first surface 103 and a second surface 104 disposed opposite to each other, the first surface 103 and the second surface 104 are disposed in a path of propagation of ambient light, the base lens 20 includes a third surface 203 and a fourth surface 204 disposed opposite to each other, the third surface 203 and the fourth surface 204 are disposed in a path of propagation of ambient light, the groove penetrates the third surface 203, the second surface 104 is disposed in the groove, the first surface 103 and the third surface 203 are combined to form a smooth surface, and a radius of curvature of the first surface 103 and the third surface 203 is the same. The first micro-lens 102 is disposed on the first surface 103 and protrudes toward a side away from the second surface 104. At this time, the first surface 103 is a side surface far from the eyes of the user, the second surface 104 and the fourth surface 204 are a side surface near to the eyes of the user, the ambient light is sequentially transmitted through the smooth surface formed by combining the first surface 103 and the third surface 203, the second surface 104 and the fourth surface 204 to enter the eyes of the user, and the first micro lens 102 arranged on the first surface 103 controls the light to be focused before focusing on the retina of the user, so as to generate myopia defocus and delay the myopia progression. The shape of the second surface 104 includes at least one of a plane, a sphere, and an aspherical surface, and may be set according to actual needs, which is not particularly limited in the embodiment of the present invention. In one embodiment, the second surface 104 is planar, and the second surface 104 does not need to be machined again after the first surface 103 of the central lens 10 is machined, so that the process is simple and the manufacturing efficiency is improved.
Fig. 2 is a schematic side view of a second microlens frame mirror according to an embodiment of the present invention, referring to fig. 2, a first microlens 102 is disposed on a second surface 104 and protrudes toward a side of a first surface 103, and the first microlens 102 disposed on the second surface 104 controls light transmitted through the first microlens 102 to generate myopia defocus, so as to delay myopia progression of eyes of a user. The first micro lens 102 protrudes towards the first surface 103, and only the central lens 10 needs to be processed at this time, and the groove of the third surface 203 of the base lens 20 does not need to be processed with high precision, so that the lens can adapt to various different eye conditions and user requirements, the cost is reduced, and the manufacturing efficiency is improved.
Fig. 3 is a schematic side view of a third microlens frame mirror according to an embodiment of the present invention, referring to fig. 3, the central lens 10 includes a first surface 103 and a second surface 104 which are disposed opposite to each other, the first surface 103 and the second surface 104 are disposed on a path of ambient light, the base lens 20 includes a third surface 203 and a fourth surface 204 which are disposed opposite to each other, the third surface 203 and the fourth surface 204 are disposed on a path of ambient light, the groove penetrates the fourth surface 204, the first surface 103 is disposed in the groove, the second surface 104 and the fourth surface 204 are combined to form a smooth surface, and the curvature radius of the second surface 104 and the fourth surface 204 is the same. The first micro-lens 102 is disposed on the second surface 104 and protrudes toward a side away from the first surface 103. At this time, the first surface 103 and the third surface 203 are a side surface far from the eyes of the user, the second surface 104 and the fourth surface 204 are a side surface near to the eyes of the user, and the ambient light is sequentially transmitted through the smooth surfaces formed by combining the third surface 203, the first surface 103, the second surface 104 and the fourth surface 204 to enter the eyes of the user, and before the first micro lens 102 arranged on the second surface 104 controls the light to focus on the retina of the user, myopia defocus is generated, and myopia progression is delayed. The shape of the first surface 103 includes at least one of a plane, a sphere, and an aspherical surface, and may be set according to actual needs, which is not particularly limited in the embodiment of the present invention. In one embodiment, the first surface 103 is planar, and the second surface 104 of the central lens 10 does not need to be processed again after processing the first surface 103, so that the process is simple and the manufacturing efficiency is improved.
Optionally, fig. 4 is a schematic side view of a fourth microlens frame mirror according to an embodiment of the present invention, and referring to fig. 1-4, the thickness of the center lens 10 is less than or equal to the thickness of the base lens 20. As shown in fig. 1-3, the thickness of the center lens 10 is less than the thickness of the base lens 20, and the center lens is smaller in size to facilitate machining of the center lens 10. As shown in fig. 4, the thickness of the center lens 10 is equal to the thickness of the base lens 20, and the center lens 10 penetrates the base lens 20. At this time, the first surface 103 of the central lens 10 and the third surface 203 are combined to form a smooth surface, the curvature radius of the first surface 103 and the third surface 203 is the same, the second surface 104 and the fourth surface 204 are combined to form a smooth surface, the curvature radius of the second surface 104 and the fourth surface 204 are the same, and the base lens 20 can be obtained by only cutting the size of the central lens 10, so that the process is simple and the manufacturing cost is reduced.
Optionally, the edge of the central lens 10 has a protrusion, the edge of the groove of the base lens 20 has a clamping groove, and the protrusion is embedded in the clamping groove; or the edge of the central lens 10 has a first thread and the groove edge of the base lens 20 has a second thread, the first thread and the second thread forming a threaded connection, the central lens 10 and the base lens 20 combining to form a complete lens of the microlens frame lens. The central lens 10 and the base lens 20 are connected through corresponding bulges and clamping grooves or through corresponding threaded connection, so that the central lens 10 can be conveniently taken down or replaced, the micro lens frame lens can be customized according to the requirements of users and eye conditions, the manufacturing cost is reduced, and the manufacturing efficiency is improved.
Alternatively, the central lens 10 and the base lens 20 may be adhered together by an optical adhesive, or the lens frames of the microlens frame lens may be provided as two sets of frames, the central lens 10 and the base lens 20 are respectively embedded on the lens frames with corresponding sizes, the two sets of frames may be connected by a transparent plastic connecting portion, and the combination manner of the central lens 10 and the base lens 20 may be set according to actual needs, which is not particularly limited in the embodiment of the present invention.
Optionally, the diameter d1 of the central lens satisfies that d1 is less than or equal to 5mm and less than or equal to 20mm, that is, the value of d1 is between 5mm and 20mm, when d1 satisfies the above value range, clear central vision can be provided for the user, when d1 is less than 5mm, the size of the central lens 10 is undersize, partial vision of the user is blurred, the use effect of the user is affected, and when d1 is greater than 20mm, the size of the central lens 10 is oversized, the user easily generates dizzy feel, and meanwhile, the manufacturing cost is increased.
Illustratively, d1 may be 5mm, 7.5mm, 10mm, 12.5mm, 15mm, 17.5mm, 20mm, etc., and the embodiments of the present invention are not limited to specific numerical relationships. In one embodiment, the diameter d1 of the center lens satisfies 10 mm.ltoreq.d1.ltoreq.15 mm.
Based on the same inventive concept, the embodiment of the present invention further provides a method for manufacturing a microlens frame mirror, and specifically, fig. 5 is a flowchart of a method for manufacturing a microlens frame mirror provided by the embodiment of the present invention, and referring to fig. 1 and fig. 5, the method for manufacturing a microlens frame mirror includes:
s110, preparing the central lens by using a lathe process.
The central lens 10 comprises a first lens 101 body and a plurality of first micro lenses 102 arranged on one side surface of the first lens 101 body, and the central lens 10 controls light rays to be focused on retina of a user so that the user obtains a clear view; the first microlens 102 controls the focusing of the light entering the eyes of the user, so that the light transmitted through the first microlens 102 is focused before the retina of the user, myopia defocus is generated, the growth of the eye axis is controlled, and the myopia progress is delayed.
Illustratively, the central lens 10 is machined with high precision, and the central lens 10 with high precision can be flexibly set according to the cornea curvature, anterior chamber depth and tolerance to the micro lens of different users, and the properties of the diameter, addition degree and the like of the first micro lens 102, and meanwhile, the coverage area of the central lens 10 is small, and the central lens 10 with high precision can be obtained without high cost.
S120, preparing the base lens by using a die casting process.
Wherein, the base lens 20 comprises a second lens 201 body and a plurality of second microlenses 202 disposed on one side surface of the second lens 201 body; the footprint of the center lens 10 is smaller than the footprint of the base lens 20. When the ambient light is incident on eyes of a user through the microlens frame mirror, the base lens 20 controls the light to be focused on retina of the user, so that the user obtains a clear view; the second microlens 202 controls the focusing of the light entering the eyes of the user, so that the light transmitted through the second microlens 202 is focused before the retina of the user, myopia defocus is generated, the growth of the eye axis is controlled, and the myopia progress is delayed. The base lens 20 is manufactured by using a die casting process, which has high precision, simple process and improved manufacturing efficiency.
S130, preparing a groove in the base lens, and combining the central lens and the base lens so that at least part of the central lens is arranged in the groove to form the microlens frame lens.
The base lens 20 includes a third surface 203 and a fourth surface 204 disposed opposite to each other, where the third surface 203 and the fourth surface 204 are sequentially located on a propagation path of the ambient light, and the groove may penetrate through the third surface 203 or the fourth surface 204, which is not particularly limited in the embodiment of the present invention.
Illustratively, the edge of the center lens 10 has a protrusion, the groove edge of the base lens 20 has a clamping groove, the protrusion is embedded in the clamping groove, or the edge of the center lens 10 has a first thread, the groove edge of the base lens 20 has a second thread, the first thread and the second thread form a threaded connection, and the center lens 10 and the base lens 20 are combined to form a complete lens of the microlens frame lens. Through setting up corresponding connection structure, conveniently take off or change central lens 10, can customize microlens frame mirror according to user's demand and eye condition, reduce manufacturing cost, promote manufacturing efficiency.
Alternatively, the central lens 10 and the base lens 20 may be adhered together by an optical adhesive, or the lens frames of the microlens frame lens may be provided as two sets of frames, the central lens 10 and the base lens 20 are respectively embedded on the lens frames with corresponding sizes, the two sets of frames may be connected by a transparent plastic connecting portion, and the combination manner of the central lens 10 and the base lens 20 may be set according to actual needs, which is not particularly limited in the embodiment of the present invention.
According to the technical scheme provided by the embodiment of the invention, the central lens is prepared by using a lathe process, the base lens is prepared by using a die casting process, and at least part of the central lens is arranged in the groove by combining the central lens and the base lens to form the micro-lens frame lens, so that the micro-lens frame lens can be customized according to the requirements of users and eye conditions, and meanwhile, the coverage area of the central lens is smaller, the manufacturing cost is reduced, and the manufacturing efficiency is improved.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A microlens frame mirror, comprising:
the central lens comprises a first lens body and a plurality of first microlenses arranged on one side surface of the first lens body;
the base lens comprises a second lens body and a plurality of second microlenses arranged on one side surface of the second lens body;
the base lens is provided with a groove, at least part of the central lens is arranged in the groove, and the coverage area of the central lens is smaller than that of the base lens.
2. The microlens frame mirror of claim 1 wherein the central optic comprises oppositely disposed first and second surfaces which are in turn located in the path of the ambient light;
the base lens comprises a third surface and a fourth surface which are oppositely arranged, the third surface and the fourth surface are sequentially positioned on the propagation path of the ambient light, and the groove penetrates through the third surface;
the second surface is positioned in the groove, the first surface and the third surface are combined to form a smooth surface, and the curvature radius of the first surface and the curvature radius of the third surface are the same.
3. The microlens frame mirror of claim 1 wherein the central optic comprises oppositely disposed first and second surfaces which are in turn located in the path of the ambient light;
the base lens comprises a third surface and a fourth surface which are oppositely arranged, the third surface and the fourth surface are sequentially positioned on the propagation path of the ambient light, and the groove penetrates through the fourth surface;
the first surface is positioned in the groove, the second surface and the fourth surface are combined to form a smooth surface, and the curvature radius of the second surface is the same as that of the fourth surface.
4. The microlens frame mirror of claim 2 wherein the first microlenses are disposed on the first surface and project toward a side remote from the second surface;
or, the first micro-lens is arranged on the second surface and protrudes towards one side of the first surface.
5. A microlens frame mirror according to claim 3, wherein the first microlenses are provided on the second surface and are convex toward a side remote from the first surface.
6. The microlens frame mirror of claim 1 wherein the thickness of the central optic is less than or equal to the thickness of the base optic.
7. The microlens frame mirror of claim 1 wherein the edge of the central optic has a protrusion and the groove edge of the base optic has a slot into which the protrusion is embedded;
alternatively, the edge of the center lens has a first thread and the groove edge of the base lens has a second thread, the first thread and the second thread forming a threaded connection.
8. The microlens frame mirror of claim 1 wherein the diameter d1 of the central optic satisfies 5mm +.d1 +.20mm.
9. The microlens frame mirror of claim 1 wherein the shape of the first microlens includes at least one of spherical, aspherical, and axicon, and the first microlens is annularly or polygonally distributed on the first lens body surface;
the shape of the second micro lens comprises at least one of a spherical surface, an aspherical surface and an axicon, and the second micro lens is distributed on the surface of the second lens body in a ring shape or a polygon shape.
10. A method of producing a microlens frame mirror for producing the microlens frame mirror according to any one of claims 1 to 9; the preparation method is characterized by comprising the following steps:
preparing a central lens by using a lathe process, wherein the central lens comprises a first lens body and a plurality of first microlenses arranged on one side surface of the first lens body;
preparing a base lens by using a die casting process, wherein the base lens comprises a second lens body and a plurality of second microlenses arranged on one side surface of the second lens body; the footprint of the central lens is smaller than the footprint of the base lens;
preparing a groove in the base lens, and combining the central lens and the base lens such that at least a portion of the central lens is disposed within the groove, forming a microlens frame lens.
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| CN202410089232.2A CN117666167A (en) | 2024-01-22 | 2024-01-22 | Microlens frame mirror and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2024177027A (en) * | 2023-06-09 | 2024-12-19 | 怡利電子工業股▲ふん▼有限公司 | Magnification display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2024177027A (en) * | 2023-06-09 | 2024-12-19 | 怡利電子工業股▲ふん▼有限公司 | Magnification display device |
| JP7719841B2 (en) | 2023-06-09 | 2025-08-06 | 怡利電子工業股▲ふん▼有限公司 | Magnifying display device |
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