CN113093316A - Machining process for finish machining of concave surface of optical lens - Google Patents
Machining process for finish machining of concave surface of optical lens Download PDFInfo
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- CN113093316A CN113093316A CN201911322420.0A CN201911322420A CN113093316A CN 113093316 A CN113093316 A CN 113093316A CN 201911322420 A CN201911322420 A CN 201911322420A CN 113093316 A CN113093316 A CN 113093316A
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- optical lens
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- exposure
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/18—Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0005—Production of optical devices or components in so far as characterised by the lithographic processes or materials used therefor
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
The invention relates to the technical field of optical lenses and discloses a processing technology for finish machining of a concave surface of an optical lens, which comprises the following steps of: the pattern exposure process technology adopts contact exposure, comprises two steps of positioning and exposing, the exposure time needs to be repeatedly tested, the optimal data is finally selected for exposure, the positioning needs to ensure the accuracy, the pattern development process technology needs to be adopted, and the development aims to etch the non-photosensitive part into the required pattern. The processing technology for finish machining of the concave surface of the optical lens has the advantages of good visual effect and the like, the development speed of the prior technology is obviously overcome by the technology of the optical lens, and the problems that the surface of the optical lens is easily infected with fingerprint traces, the surface is rough in processing, the visual effect is poor and the production efficiency of the optical lens is low exist no matter when the processing technology is applied to any equipment.
Description
Technical Field
The invention relates to the technical field of optical lenses, in particular to a processing technology for finish machining of a concave surface of an optical lens.
Background
The glass used for making the lens originally was a pimple on a common window glass or wine bottle, similar in shape to a "crown", the name of crown glass or crown glass comes from which the glass was very inhomogeneous, foamy, another flint glass with a high lead content in addition to crown glass, the skin of france and louis schner discovered in around 1790 years that the stir glass paste could make a glass with a homogeneous quality, the inster abbe and otto schottky in jeana, germany, of zettes in 1884 years created a schottky glass factory (Schott glasverke AG), several tens of optical glasses were developed in a few years, of which the invention of barium crown glass with a high refractive index was one of the important achievements of the schottky glass factory.
According to the improved structure of the polarized optical lens and the manufacturing method thereof, which are provided by the Chinese patent publication No. CN 1808213A, the improved structure of the polarized optical lens and the manufacturing method thereof have the advantage of reducing the cost, but the process technology of the polarized optical lens obviously breaks away from the development speed of the prior art, and the defects of fingerprint traces, rough surface processing, poor visual effect and the like easily exist on the surface of the optical lens when the polarized optical lens is applied to any equipment, so that the defects are gradually eliminated, and the processing technology for finishing the concave surface of the optical lens is provided, thereby solving the problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a processing technology for finish machining of the concave surface of an optical lens, which has the advantages of good visual effect and the like, and solves the advantages of the improved structure of the polarized optical lens and the cost reduction of the manufacturing method thereof, but the technology of the optical lens obviously breaks away from the development speed of the prior art, and the problems of easy fingerprint mark staining, rough surface processing, poor visual effect and low production efficiency of the optical lens exist no matter the technology is applied to any equipment.
(II) technical scheme
In order to achieve the purpose of good visual effect, the invention provides the following technical scheme: a machining process for concave surface finishing of an optical lens comprises the following steps:
1) selecting a glass material: common substrate materials such as corning glass and AG glass;
2) pattern exposure process technology: adopting contact exposure, including two steps of 'positioning' and 'exposure', wherein the exposure time needs to repeatedly adopt the same method for carrying out an experiment, and finally, selecting the optimal data for exposure, and the positioning needs to ensure the accuracy;
3) the pattern development process technology comprises the following steps: the development aims at etching the part which is not sensitive to light to form a required pattern, the development is thorough so as to ensure that the edge of the pattern is neat, the development needs to be strictly controlled, and the developing solution needs to be replaced in time;
4) the microetching process technology comprises the following steps: the acid liquor selected for etching must be able to corrode the bare glass layer, in addition, the acid liquor is required to have low toxicity and convenient use, and the temperature and time are strictly controlled in the micro-etching process;
5) the laser cutting process technology comprises the following steps: precisely cutting the shape of the final product on the product obtained in the step 4) by using a precise laser cutting machine according to the specification and size requirements of the product;
6) the coating process technology comprises the following steps: according to the requirements of the product, various film coating products can be produced, including anti-fingerprint films, antireflection films, metal color films and the like.
Preferably, the glass material is selected from common substrate materials such as corning glass, AG glass and the like, a large number of experiments are carried out on the same batch of material etching solution under the conditions of component proportion, temperature and soaking time, the surface topography change data of related substrate materials are collected through an advanced surface topography detection technology, and a special database is established to determine the optimal control parameters of different products in the etching process stage.
Preferably, the exposure time is determined by factors such as the distance from the light source to the glass, the intensity of the light source, the photosensitive performance of the photosensitive resist, the thickness of the film and the glass, and the like, the positioning has a great influence on the etching precision, and is an important ring in etching, and the misalignment, the breakage and even the whole piece scrap can be caused by the inaccurate positioning.
Preferably, if the developing time is short, a layer of photosensitive adhesive layer which is not easy to perceive is left at the non-photosensitive part, so that the pattern is blurred, the etching quality is affected, and if the developing time is too long, due to softening and expansion of the photoresist during developing, the developing solution permeates from the surface of the glass layer to the edge of the pattern, so that the adhesive solution occurs, and the edge of the pattern is deformed.
Preferably, the technical index of the anti-fingerprint film (AF) reaches a pure water contact angle of more than or equal to 110 degrees, more than or equal to 100 degrees after 3000 circles of friction, the technical index of the anti-reflection film (AR) reaches positions of 450nm, 550nm and 650nm, the single-side transmittance is more than 95 percent, the double-side transmittance is more than 97.5 percent, the anti-fingerprint film can be coated locally after shielding, and a metal color film (NCVM) can be customized according to the requirements of customers.
(III) advantageous effects
Compared with the prior art, the invention provides a processing technology for finish machining of the concave surface of an optical lens, which has the following beneficial effects:
1. the processing technology for the concave finish machining of the optical lens adopts contact exposure, comprises two steps of 'positioning' and 'exposure', the exposure time needs to be repeatedly tested by the same method, the optimal data is finally selected for exposure, the positioning needs to ensure the accuracy, if the exposure time is too short and the photosensitive glue is not sufficiently photosensitive, the photochemical reaction is insufficient, the corrosion resistance of the photosensitive glue is reduced, part of the photosensitive glue is dissolved during development, if the exposure time is too long, the edge of the photosensitive glue which is not originally photosensitive part is slightly photosensitive, the 'halation' phenomenon is generated, the original fuzziness or wrinkles are found after etching, the resolution is reduced, the required pattern is etched on the photosensitive part, the development is thorough, the edge of the pattern is neat, the development time needs to be strictly controlled and the developing solution needs to be replaced in time, the acid solution selected by etching needs to be capable of corroding the exposed glass layer, in addition, the toxicity of acid solution is also required to be low, the use is convenient, the temperature and time are strictly controlled in the micro-etching process, the developing time is insufficient, a photosensitive adhesive layer which is not easy to perceive is left at a non-photosensitive part, the pattern is blurred, the etching quality is influenced, if the developing time is too long, the photoresist is softened and expanded during the development, the developing solution permeates from the surface of the glass layer to the edge of the pattern, the sticking and the dissolution occur, the edge of the pattern is deformed, and in order to ensure the developing quality, the developing time must be strictly controlled and the developing solution must be replaced in time, so that the visual effect and the processing precision of the optical lens are effectively improved, and the purpose of good visual.
2. The processing technology for finish machining of the concave surface of the optical lens can finish the production of various coated products according to product requirements or requirements, and comprises an anti-fingerprint film, an anti-reflection film, a metal color film and the like, wherein the anti-fingerprint film (AF) technical index reaches a pure water contact angle of more than or equal to 110 degrees, the anti-fingerprint film is more than or equal to 100 degrees after 3000 circles of friction, the anti-reflection film (AR) technical index reaches 450nm, 550nm and 650nm positions, the single-side transmittance is more than 95 percent, the double-side transmittance is more than 97.5 percent, the back local coating can be shielded, the metal color film (NCVM) can be customized according to the customer requirements, the coating can be well controlled, the optical lens has the characteristics of fingerprint resistance, wear resistance, anti-glare and the like while the use and visual effects of the optical lens are not influenced, the practicability of the optical lens is improved, the modern requirements are met, and the processing difficulty of the glass, The problems of low yield, low product quality consistency and the like are solved, so that the project product meets the ultra-precise technical indexes of etching line width of less than or equal to 0.03mm, etching line distance of less than or equal to 0.03mm and the like, batch production is realized, and the production efficiency of the optical lens is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Example (b): a machining process for concave surface finishing of an optical lens comprises the following steps:
1) selecting a glass material: the method comprises the following steps that common substrate materials such as Corning glass and AG glass are selected as glass materials, a large number of experiments are carried out on the common substrate materials such as the Corning glass and the AG glass under the conditions of component proportion, temperature and soaking time of the same batch of material etching solution, surface topography change data of related substrate materials are collected through an advanced surface topography detection technology, and a special database is established to determine the optimal control parameters of different products in the etching process stage;
2) pattern exposure process technology: the method comprises the following steps of adopting contact exposure, including two steps of positioning and exposing, wherein the exposure time needs to be repeatedly tested by the same method, and finally the optimal data is selected for exposure, the positioning needs to ensure the accuracy, the exposure time is determined by the distance from a light source to glass, the intensity of the light source, the photosensitive performance of photosensitive resist, the thickness of film and glass and other factors, the positioning has great influence on the etching accuracy, and is an important ring in etching, and the misalignment, the broken line and even the whole piece are scrapped due to the inaccurate positioning;
3) the pattern development process technology comprises the following steps: the developing aims are to etch the non-photosensitive part to form a required pattern, the developing is thorough, so that the edge of the pattern is neat, the developing needs to be strictly controlled for developing time and a developing solution needs to be replaced in time, if the developing time is insufficient, a layer of photosensitive adhesive layer which is not easy to detect is left at the non-photosensitive part, the pattern is blurred, the etching quality is influenced, if the developing time is too long, because the photoresist is softened and expanded during the developing, the developing solution permeates from the surface of a glass layer to the edge of the pattern and is subjected to viscosity dissolution, the edge of the pattern is deformed, and in order to ensure the developing quality and the yield of a project product, through a large number of experiments, when the developing parameters are set to be 0.1-0.18N in KOH solubility, the temperature is 30 +/-2 ℃, the pressure is less than or equal to 0.2kg/c square meter, the transmission speed is 4.5 +/-1.5 m/min, and the spray washing pressure is 0.1-;
4) the microetching process technology comprises the following steps: the acid liquor selected for etching must be able to corrode the bare glass layer, in addition, the acid liquor is also required to have low toxicity and convenient use, the temperature and time are strictly controlled in the micro-etching process, the etching temperature has great influence on the etching effect, if the temperature is too low, the etching time is long, floating glue is easily generated, if the temperature is too high, the etching acid liquor is too active, and the degumming or undercutting phenomenon is also easily generated;
5) the laser cutting process technology comprises the following steps: a precision laser cutting machine is used, the shape of the final product is accurately cut from the product obtained in the step 4) according to the specification and size requirements of the product, the requirements of the process are extremely strict, the cutting displacement is too large, the shape matching of subsequent printing and coating can be avoided, the whole piece is scrapped, the cutting depth is too large, small pieces fall off in the subsequent processing process, the cutting depth is not enough, the difficulty of subsequent piece division can be increased, and the product defects such as edge breakage and burrs can be easily caused;
6) the coating process technology comprises the following steps: according to the product requirements or requirements, the production of various coated products can be finished, the coated products comprise an anti-fingerprint film, an anti-reflection film, a metal color film and the like, the technical index of the anti-fingerprint film (AF) reaches a pure water contact angle of more than or equal to 110 degrees, 3000 circles of friction of more than or equal to 100 degrees, the technical index of the anti-reflection film (AR) reaches 450nm, 550nm and 650nm positions, the single-side transmittance is more than 95 percent, the double-side transmittance is more than 97.5 percent, the coated film can be partially coated after shielding, and the metal color film (NCVM) can be customized according to.
The invention has the beneficial effects that: by adopting contact exposure, including two steps of 'positioning' and 'exposure', the exposure time needs to repeatedly adopt the same method to carry out an experiment, the optimal data is finally selected to carry out exposure, the positioning needs to ensure the accuracy, if the exposure time is too short and the photosensitive glue is not sufficiently photosensitive, the photochemical reaction is not sufficient, the corrosion resistance of the photosensitive glue is reduced, part of the photosensitive glue is dissolved during development, if the exposure time is too long, the edge of the photosensitive part of the photosensitive glue which is not photosensitive is slightly photosensitive, namely, the 'halation' phenomenon is generated, the original fuzziness or wrinkles are found after etching, the resolution is reduced, the required pattern is etched on the photosensitive part by the development, the development is thorough, the edge of the pattern is neat, the development needs to be strictly controlled, the development time is controlled, the developing solution is timely replaced, the acid solution selected by the etching needs to corrode the exposed glass layer, in addition, the method is characterized in that the method also requires that the toxicity of acid solution is low, the use is convenient, the temperature and time are strictly controlled in the micro-etching process, the developing time is insufficient, a photosensitive adhesive layer which is not easy to perceive is left at a non-photosensitive position, the pattern is blurred, the etching quality is influenced, if the developing time is too long, because the photoresist is softened and expanded during the development, the developing solution permeates from the surface of a glass layer to the edge of the pattern and is dissolved in a viscous manner, the edge of the pattern is deformed, and in order to ensure the developing quality, the developing time must be strictly controlled and the developing solution must be replaced in time, so that the visual effect and the processing precision of the optical lens are effectively improved.
Moreover, according to the product requirements or requirements, the production of various coated products can be completed, including an anti-fingerprint film, an anti-reflection film, a metal color film and the like, the technical index of the anti-fingerprint film (AF) reaches a pure water contact angle of more than or equal to 110 degrees, more than or equal to 100 degrees after 3000 circles of friction, the technical index of the anti-reflection film (AR) reaches 450nm, 550nm and 650nm positions, the single-side transmittance is more than 95 percent, the double-side transmittance is more than 97.5 percent, the local coating can be shielded, the metal color film (NCVM) can be customized according to the requirements of customers, the coating can be well controlled, the optical lens has the characteristics of fingerprint resistance, wear resistance, anti-glare and the like without influencing the use and visual effects of the optical lens, the practicability of the optical lens is improved, the modern requirements are met, the difficulties of high processing difficulty, low yield, low product quality consistency and the like of glass texture products are overcome through an, the method has the advantages that the project product meets ultra-precise technical indexes such as the etching line width is less than or equal to 0.03mm, the etching line distance is less than or equal to 0.03mm, the mass production is realized, the advantage that the cost is reduced by the improved structure of the polarized optical lens and the manufacturing method thereof is solved, but the process technology of the optical lens obviously breaks away from the development speed of the prior art, and the problems of fingerprint traces, rough surface processing, poor visual effect and low production efficiency of the optical lens easily exist on the surface of the optical lens when the optical lens is applied to any equipment.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A machining process for concave surface finish machining of an optical lens is characterized by comprising the following steps:
1) selecting a glass material: common substrate materials such as corning glass and AG glass;
2) pattern exposure process technology: adopting contact exposure, including two steps of 'positioning' and 'exposure', wherein the exposure time needs to repeatedly adopt the same method for carrying out an experiment, and finally, selecting the optimal data for exposure, and the positioning needs to ensure the accuracy;
3) the pattern development process technology comprises the following steps: the development aims at etching the part which is not sensitive to light to form a required pattern, the development is thorough so as to ensure that the edge of the pattern is neat, the development needs to be strictly controlled, and the developing solution needs to be replaced in time;
4) the microetching process technology comprises the following steps: the acid liquor selected for etching must be able to corrode the bare glass layer, in addition, the acid liquor is required to have low toxicity and convenient use, and the temperature and time are strictly controlled in the micro-etching process;
5) the laser cutting process technology comprises the following steps: precisely cutting the shape of the final product on the product obtained in the step 4) by using a precise laser cutting machine according to the specification and size requirements of the product;
6) the coating process technology comprises the following steps: according to the requirements of the product, various film coating products can be produced, including anti-fingerprint films, antireflection films, metal color films and the like.
2. The machining process for concave finish machining of optical lenses as claimed in claim 1, wherein the glass material is selected from common substrate materials such as corning glass and AG glass, a lot of experiments are required to be performed on the same batch of material etching solution under the conditions of component ratio, temperature and soaking time, surface topography change data of related substrate materials are collected through advanced surface topography detection technology, and a special database is established to determine the optimal control parameters of different products in the etching process stage.
3. The machining process for concave surface finish machining of optical lens according to claim 1, wherein the exposure time is determined by the distance from the light source to the glass, the intensity of the light source, the photosensitive property of the photosensitive resist, the thickness of the film and the glass, and the like, and the positioning has a great influence on the etching precision and is an important part in etching, and the positioning error can cause wrong lines, broken lines and even whole piece scrap.
4. The process according to claim 1, wherein if the developing time is too short, a layer of photosensitive resist layer is left at the non-photosensitive area, which causes the pattern to be blurred and affects the etching quality, and if the developing time is too long, the developing solution penetrates from the surface of the glass layer to the pattern edge due to the softening and swelling of the photoresist during the developing process, which causes the pattern edge to be deformed due to the sticking and dissolution.
5. The machining process for the concave finish machining of the optical lens according to claim 1, wherein the technical index of the anti-fingerprint film (AF) reaches a pure water contact angle of not less than 110 degrees, is not less than 100 degrees after 3000 circles of rubbing, the technical index of the anti-reflection film (AR) reaches 450nm, 550nm and 650nm, the single-side transmittance is more than 95 percent, the double-side transmittance is more than 97.5 percent, the coating can be locally coated after shielding, and the metal color film (NCVM) can be customized according to customer requirements.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911322420.0A CN113093316A (en) | 2019-12-20 | 2019-12-20 | Machining process for finish machining of concave surface of optical lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911322420.0A CN113093316A (en) | 2019-12-20 | 2019-12-20 | Machining process for finish machining of concave surface of optical lens |
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| CN113093316A true CN113093316A (en) | 2021-07-09 |
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| CN201911322420.0A Pending CN113093316A (en) | 2019-12-20 | 2019-12-20 | Machining process for finish machining of concave surface of optical lens |
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