CN111812794A - Lens assembly and preparation method thereof - Google Patents
Lens assembly and preparation method thereof Download PDFInfo
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- CN111812794A CN111812794A CN202010901388.8A CN202010901388A CN111812794A CN 111812794 A CN111812794 A CN 111812794A CN 202010901388 A CN202010901388 A CN 202010901388A CN 111812794 A CN111812794 A CN 111812794A
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- optical
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- silica gel
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- 238000002360 preparation method Methods 0.000 title abstract description 9
- 230000003287 optical effect Effects 0.000 claims abstract description 82
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000000741 silica gel Substances 0.000 claims abstract description 50
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000007787 solid Substances 0.000 claims abstract description 11
- 238000013008 moisture curing Methods 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000001723 curing Methods 0.000 claims description 7
- 230000009974 thixotropic effect Effects 0.000 claims description 5
- 239000000499 gel Substances 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000004944 Liquid Silicone Rubber Substances 0.000 claims description 2
- 229920002379 silicone rubber Polymers 0.000 claims description 2
- 239000002904 solvent Substances 0.000 abstract description 14
- 230000036541 health Effects 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 abstract description 3
- 238000004544 sputter deposition Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 40
- 239000003292 glue Substances 0.000 description 14
- 239000011248 coating agent Substances 0.000 description 13
- 238000000576 coating method Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000012538 light obscuration Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/025—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using glue
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0208—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles
- B05C5/0212—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles only at particular parts of the articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0486—Operating the coating or treatment in a controlled atmosphere
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The invention discloses a lens assembly and a preparation method thereof, wherein the lens assembly comprises an optical lens and a light shielding layer, the optical lens comprises an optical area and a non-optical area, and the non-optical area circumferentially surrounds the side edge of the optical area; the shading layer is coated in the non-optical area of the optical lens, and the shading layer is made of solid silica gel. The shading layer is prepared by the dispenser, the dispensing material is single-component liquid silica gel and does not contain a solvent containing benzene ring substances, pollution such as sputtering volatilization and the like cannot be generated in the process of preparing the shading layer, and harm to the health of operators or workers in the whole closed workshop cannot be caused.
Description
Technical Field
The invention relates to the field of optics, in particular to a lens assembly and a preparation method of the lens assembly.
Background
In recent years, with the development of imaging technology and the rise of electronic products with imaging function, optical lens modules are widely used in various products. In the imaging process, stray light interference is easily formed in the lens barrel by light emitted to the lens module from various angles, which greatly affects the imaging quality. At present, solvent-based ink is generally used to coat a non-optical area of an optical lens to form a light shielding layer for performing stray light extinction treatment on the optical lens. Furthermore, the optical device generally has hundreds or thousands of dust-free requirements on the environment, but the sputtering volatilization of the ink jet and the like are difficult to meet the requirements, the solvent of the solvent type ink contains benzene ring substances as the basic component, and the physical health of operators and workers in the whole closed workshop can be affected to a certain extent.
Disclosure of Invention
The invention mainly aims to provide a lens assembly and a preparation method of the lens assembly, aiming at solving the problems that solvent type ink adopted in the existing preparation of a light shielding layer of the lens assembly is polluted greatly and is unfavorable to the health of workers.
To achieve the above object, the present invention provides a lens assembly, including:
an optical lens comprising an optical zone and a non-optical zone circumferentially surrounding along a side of the optical zone;
the light shading layer is coated in the non-optical area of the optical lens, and the material of the light shading layer is solid silica gel.
Preferably, the lens assembly includes a plurality of optical lenses stacked in sequence, two adjacent optical lenses are bonded to each other, and the light shielding layer is coated on the peripheries of the optical lenses.
Preferably, the thickness of the light shielding layer is 200 to 400 μm.
In addition, the invention also provides a preparation method of the lens assembly, which is used for preparing the lens assembly and comprises the following steps:
providing an optical lens;
dispensing the non-optical area along the circumferential direction of the optical lens by using a dispenser; wherein the dispensing material is liquid silica gel;
and solidifying the liquid silica gel to obtain the shading layer.
Preferably, the viscosity of the liquid silica gel is 10000-30000 cP, and the touch change value of the liquid silica gel is 1-2.
Preferably, the curing is moisture curing, the temperature of the moisture curing is 20-40 ℃, and the humidity of the moisture curing is 50-80%.
Preferably, the time of the moisture curing is 7-15 min.
Preferably, the dispenser has an injection valve, and the liquid silicone rubber is injected to the non-optical area through the injection valve.
Preferably, the injection valve is provided with a needle head for injecting the liquid silica gel, and the inner diameter of the needle head is 0.25-0.4 mm.
Preferably, the single-point movement stroke of the needle head is 0.4-0.6 mm, and the stroke period of the needle head is 0.01-0.02 ms.
In the technical scheme of the invention, the optical lens comprises an optical area and a non-optical area, wherein the non-optical area circumferentially surrounds along the side edge of the optical area, and a glue dispenser is adopted for dispensing glue to the non-optical area along the circumferential direction of the optical lens; wherein the dispensing material is liquid silica gel; and then solidifying the liquid silica gel to obtain a shading layer made of solid silica gel so as to perform stray light extinction treatment on the optical lens. Because the dispensing material is single-component liquid silica gel and does not contain a solvent containing benzene ring substances, the pollution such as sputtering volatilization and the like can not be generated in the process of preparing the light shielding layer, and the harm to the health of operating personnel or the health of the working personnel in the whole closed workshop can not be caused.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a flow chart of a method for manufacturing a lens assembly according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a lens assembly, which comprises:
an optical lens comprising an optical zone and a non-optical zone, the non-optical zone circumferentially surrounding along a side of the optical zone;
the shading layer is coated in the non-optical area of the optical lens, and the shading layer is made of solid silica gel.
The front surface of the optical lens of the embodiment is an optical area, the surface can selectively diffract, reflect and project light rays and the like, the side edge is a non-optical area, and the shading layer coated on the non-optical area can eliminate external parasitic light and internal light reflection, so that the imaging quality of the lens module is improved; moreover, the light shielding layer is made of solid silica gel, so that the light shielding layer can shield light, the silica gel is good in stability, the curing process is simple and energy-saving, the silica gel is environment-friendly and non-toxic, and the harm to the body of an operator can be avoided. The black silica gel material is preferably selected in the embodiment, and the shading effect is good. The lens assembly of the embodiment can be applied to lens modules of electronic products such as mobile phones, cameras, projection equipment and the like, and can also be applied to spectacle lenses.
In one embodiment, the lens assembly includes a plurality of optical lenses stacked in sequence, two adjacent optical lenses are bonded to each other, and the light shielding layer is coated on the peripheries of the optical lenses. The lens subassembly is multilayer lens structure promptly, pastes together through glue between the optical lens piece, and the light shield layer encircles along multilayer optical lens piece's edge circumference, and multilayer optical lens piece not only can eliminate the parasitic light through the light shield layer promptly, can also pass through the light shield layer banding, and light shield layer sealing performance is good, can protect the inside of multilayer optical lens structure.
Specifically, the thickness of the light-shielding layer is 200 to 400 μm. The light shielding layer is thin, does not occupy the size of the lens module, and can ensure good light shielding effect.
Furthermore, the present invention also provides a method for preparing the lens assembly, which is used for preparing the lens assembly, and as shown in fig. 1, the method for preparing the lens assembly comprises the following steps:
s1, providing an optical lens;
s2, controlling a dispenser to dispense glue to the non-optical area along the circumferential direction of the optical lens; wherein the dispensing material is liquid silica gel;
and S3, solidifying the liquid silica gel to obtain the shading layer.
The traditional light shielding layer is generally coated by solvent type ink, the general coating mode is an ink-jet type or a sponge ink-coating type, the solvent type ink is generally a multi-component product due to the chemical characteristics of the solvent type ink, the solvent type ink is mixed into the ink for use during use, the mixed ink can generate a plurality of uncontrollable factors, for example, the batch deviation exists in the using amount of each component, the mixing uniformity is difficult to ensure, the stability is poor, ink is jetted by an ink-jet machine or an ink-coating machine, bubbles and particles are easy to form on an optical lens, or a needle head of the ink-jet machine or the ink-coating machine is blocked, and if a coated lens component is a multilayer laminated lens, the solvent type ink is easy to mix; and the solvent-based ink has low viscosity (the viscosity is less than 100 cP), tracks are dispersed during ink jet, a non-ink-coating area needs to be shielded, and process steps are added. And this embodiment adopts liquid silica gel as the coating material of light shield layer, and liquid silica gel is single component material, and stability is strong, can directly purchase ready-made product, does not need the secondary to mix and use, uses manpower sparingly, man-hour and printing ink allotment error possibility. By adopting the dispensing type process, the glue can be accurately dispensed. And for the gluing part of the multilayer optical lens, the risks of solvent corrosion or inward migration and the like can not occur, and the performance of the lens component can not be influenced. The liquid silica gel is nontoxic and harmless, can meet the high standard requirement of an optical device on the environment, and cannot influence the health of operating personnel or the health of the workers in the whole closed workshop.
More specifically, the viscosity of the liquid silica gel is 10000-30000 cP, and the touch value of the liquid silica gel is 1-2. 10000-30000 cP liquid silica gel is adopted, so that the liquidity of the liquid silica gel can be ensured, the liquid silica gel can not flow randomly, and accurate dispensing can be realized. If the touch value is too small, the glue is easy to flow to a non-coating area of the lens assembly, and if the touch value is too large, the glue dispensing surface is not smooth and is in a wave line shape; the thixotropic value is the ratio of the viscosity at different rotating speeds, the thixotropic value of the embodiment is the ratio of the viscosity at the rotating speed of 10 rpm to the viscosity at the rotating speed of 20 rpm, specifically 1-2, the coating effect cannot be influenced, and the non-coating area can reach the level that the ink overflow requirement is less than 0.5 mm without being attached with a shielding film.
The curing of the embodiment is moisture curing, the temperature of the moisture curing is 20-40 ℃, and the humidity of the moisture curing is 50-80%. Moisture curing is curing by reaction with moisture in the air, i.e. becoming solid by chemical reaction with water molecules in the air. The liquid silica gel is easy to cure, can be cured in an environment with the temperature of 20-40 ℃ and the moisture of 50-80%, is generally placed in a natural environment, and is bonded and cured through reaction with water in the air to obtain the light shielding layer. The preparation of the traditional light shielding layer requires that ink and a solvent are mixed, a shielding film is attached to a non-coating area, then the mixed ink is filled into an ink jet machine or an ink coating machine for mixing, pre-curing is carried out firstly, then heat curing is carried out, and finally the next procedure is carried out, so that the steps are complex, and more time and materials are consumed. In the embodiment, the glue can be dispensed by a glue dispenser and then cured by moisture, so that the next process can be carried over, heating and curing are not needed, the preparation steps are simple, the labor cost is reduced, and the production cost is reduced.
Wherein the time for moisture curing is 7-15 min. The liquid silica gel of the embodiment is easy to cure, can be cured in only 7-15 min, can be circulated to the next procedure generally only in a natural environment for about 10min, saves more man-hours compared with the traditional mixed ink spraying, and improves the production efficiency.
Preferably, the glue dispenser has an injection valve through which the liquid silicone gel is injected to the non-optical zone. The injection valve utilizes the characteristics of piezoelectric materials, generates mechanical force through voltage, and opens when the piezoelectric materials below are charged; when the overlying piezoelectric material is charged, the valve closes. Because the space for opening and closing the valve is extremely small, the action frequency is extremely high, the extremely-small amount of liquid material can be ejected at high speed, and meanwhile, the thixotropic property of the liquid silica gel is used for naturally, flatly, integrally and spreading, so that the uniform consistency of the ink-coated surface is achieved. The piezoelectric type spraying dispensing is adopted, the inverse piezoelectric effect of the piezoelectric material is utilized, the spraying frequency is high, the equipment structure is simple, and the glue dots with the diameter smaller than 100 micrometers can be obtained by spraying; on the other hand, the control accuracy of the piezoelectric structure is high, the injection dispensing quality can be improved, the injection efficiency is high, and the dispensing is uniform and good in consistency.
Furthermore, the injection valve is provided with a needle head for injecting liquid silica gel, the inner diameter of the needle head is 0.25-0.4 mm, the diameter of an injected gel point is proper, the specific inner diameter of the needle head can be selected according to the thickness of the light shielding layer, and if the inner diameter of the needle head is too small, the thickness of the light shielding layer is too thin, so that the light shielding effect is influenced; if the inner diameter of the needle is too large, the thickness of the light shielding layer is too thick, which may cause ink overflow to the front surface of the lens, waste material or reduce yield.
The single-point moving stroke of the needle head is 0.4-0.6 mm, and the stroke period is 0.01-0.02 ms. The single-point moving stroke refers to the moving distance of the dispensing needle each time, after the last drop of liquid silica gel is sprayed, the needle can move by 0.4-0.6 mm, then the next drop of liquid silica gel is sprayed, the liquid silica gel can be leveled after contacting with the optical lens, and then the liquid silica gels are mutually fused. The stroke cycle refers to the moving time of the dispensing needle each time, namely after the last drop of liquid silica gel is ejected, the liquid silica gel is ejected to the next ejection point after 0.01-0.02 ms due to the fact that the liquid silica gel needs to be moved to the next ejection point. The glue dispensing of the embodiment is high in efficiency, and the surface of the light shielding layer is smooth and uniform.
Example 1
The lens subassembly of this embodiment is by a slice optical lens and the light shield layer of edge circumference coating along this optical lens, and the material of light shield layer is solid silica gel. The method for preparing the lens assembly of the embodiment comprises the following steps: a high-precision dispensing machine is adopted to dispense glue to the non-optical area along the circumferential direction of the optical lens through an injection valve, the dispensing material is liquid silica gel, the viscosity of the liquid silica gel is 16000 cP, the touch value is 1.3, the inner diameter of a needle head is 0.4 mm, the single-point moving stroke is 0.5 mm, and the stroke period is 0.01 ms; then, the resultant was moisture-cured at 23 ℃ and a humidity of 50% for 7min, and the liquid silica gel was changed to solid silica gel, thereby obtaining a light-shielding layer having a thickness of 300. mu.m.
The 5 lens assemblies of this embodiment were taken and tested for adhesion of the light-shielding layer, and the light-shielding layer was repeatedly adhered and pulled 5 times by a test tape of Elcometer 99 without falling off.
Example 2
The lens subassembly of this embodiment is pasted through glue by two optical lens that pile up and the light shield layer of edge circumference coating along two optical lens, and the material of light shield layer is solid silica gel. The method for preparing the lens assembly of the embodiment comprises the following steps: dispensing a non-optical area by a high-precision dispenser through an injection valve along the circumferential direction of two optical lenses, wherein the dispensing material is liquid silica gel, the viscosity of the liquid silica gel is 30000 cP, the thixotropic value is 2, the inner diameter of a needle head is 0.25mm, the single-point moving stroke is 0.6mm, and the stroke period is 0.02 ms; then, the mixture was moisture-cured at 28 ℃ and a humidity of 60% for 10min, and the liquid silica gel was changed to solid silica gel, thereby obtaining a light-shielding layer having a thickness of 200 μm.
Taking 5 lens assemblies of the embodiment, respectively testing the waterproof sealing performance and the adhesive force of the light shielding layers of the lens assemblies, placing the lens assemblies in 100 ℃ boiling water, boiling for 30 min, taking out and observing that no water seepage exists in the interlayer between the two optical lenses; the test tape with the model number of Elcometer 99 is repeatedly adhered and pulled for 5 times to prevent the light shading layer from falling off.
The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by the present specification or directly/indirectly applied to other related technical fields under the spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. A lens assembly, the lens assembly comprising:
an optical lens comprising an optical zone and a non-optical zone circumferentially surrounding along a side of the optical zone;
the light shading layer is coated in the non-optical area of the optical lens, and the material of the light shading layer is solid silica gel.
2. The lens assembly of claim 1, wherein the lens assembly includes a plurality of the optical lenses stacked in sequence, adjacent two of the optical lenses are bonded to each other, and the light shielding layer is coated on the periphery of the plurality of the optical lenses.
3. The lens assembly of claim 1, wherein the light-shielding layer has a thickness of 200 to 400 μm.
4. A method for producing a lens assembly according to any one of claims 1 to 3, comprising the steps of:
providing an optical lens;
dispensing the non-optical area along the circumferential direction of the optical lens by using a dispenser; wherein the dispensing material is liquid silica gel;
and solidifying the liquid silica gel to obtain the shading layer.
5. The method of claim 4, wherein the liquid silicone has a viscosity of 10000-30000 cP and a thixotropic value of 1-2.
6. The method of making the lens assembly of claim 4, wherein the curing is moisture curing, the moisture curing temperature is 20-40 ℃, and the moisture curing humidity is 50-80%.
7. The method of making a lens assembly of claim 6, wherein the moisture cure time is 7 to 15 minutes.
8. The method for preparing a lens assembly according to any one of claims 4 to 7, wherein the dispenser has an injection valve through which the liquid silicone gel is injected to the non-optical zone.
9. The method for manufacturing a lens assembly as claimed in claim 8, wherein the injection valve has a needle for injecting the liquid silicone rubber, and the inner diameter of the needle is 0.25 to 0.4 mm.
10. The method for manufacturing a lens assembly of claim 9, wherein the stroke of the needle head is 0.4-0.6 mm in a single point movement, and the stroke period of the needle head is 0.01-0.02 ms.
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| CN202010901388.8A CN111812794A (en) | 2020-09-01 | 2020-09-01 | Lens assembly and preparation method thereof |
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| CN202010901388.8A CN111812794A (en) | 2020-09-01 | 2020-09-01 | Lens assembly and preparation method thereof |
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| JP2023125704A (en) * | 2022-02-28 | 2023-09-07 | 東京応化工業株式会社 | Method for manufacturing optical elements, optical elements and photosensitive compositions |
| CN115971008A (en) * | 2022-12-16 | 2023-04-18 | 富联裕展科技(深圳)有限公司 | Glue filling method and glue filling device |
| CN115971008B (en) * | 2022-12-16 | 2023-12-29 | 富联裕展科技(深圳)有限公司 | Glue filling method and glue filling device |
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Application publication date: 20201023 |