CN111993189B - Processing technology of large-caliber plane mirror - Google Patents
Processing technology of large-caliber plane mirror Download PDFInfo
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- CN111993189B CN111993189B CN202010877844.XA CN202010877844A CN111993189B CN 111993189 B CN111993189 B CN 111993189B CN 202010877844 A CN202010877844 A CN 202010877844A CN 111993189 B CN111993189 B CN 111993189B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
- B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
- B24B7/24—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass
- B24B7/241—Methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
- B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
- B24B7/24—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass
- B24B7/242—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass for plate glass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a processing technology of a large-caliber plane mirror, and relates to the technical field of plane mirror processing. The method comprises the following steps: step one, coarse grinding and forming; step two, finely grinding and polishing the first surface; step three, finely grinding and polishing the second surface; and step four, sequentially and finely polishing the two surfaces by using a classical polishing method. And in the fourth step, bonding the workpiece on the aluminum bottom plate by using a plurality of conical glue points for polishing. The method has simple operation steps, adopts the classical polishing as the last polishing process, reduces the production cost, and simultaneously ensures higher production efficiency and qualified rate of finished products; in the polishing process step of the classical method, a workpiece to be polished and an aluminum base plate are connected by using conical glue points, and the glue points are used for providing uniform tension for all parts of the surface of the workpiece, so that the surface tension of the workpiece is uniformly distributed, the deformation of the workpiece in the polishing process is reduced, the difference of the abrasion loss from the edge to the center of the workpiece is reduced, the surface aperture of the workpiece is optimized, and the quality of the workpiece is improved.
Description
Technical Field
The invention relates to the technical field of plane mirror processing, in particular to a processing technology of a large-caliber plane mirror.
Background
The cover plate of the aircraft meter usually adopts a high-precision plane mirror, and the function of the plane mirror is to ensure that a pointer and an image of the pointer in the mirror coincide, so that a person can obviously see the small change of the pointer of the meter during reading. The domestic process for processing the plane mirror of the instrument cover plate of the airplane generally comprises the following steps: rough grinding, accurate grinding, rough polishing, fine polishing and the like. At present, the common fine polishing technology at home and abroad mainly comprises the following steps: polishing by a classical polishing method, polishing by a ring polishing machine, magnetorheological polishing, ion beam polishing, jet polishing and the like. Among them, classical polishing and ring polishing are widely used because of their simple processes and low costs.
When using classical polishing method polishing as last polishing process processing aircraft instrument apron plane mirror, because the size of aircraft instrument apron plane mirror is very big, and thickness is very little, the plane mirror middle part produces deformation to the edge easily in the polishing process, leads to mirror surface edge to the central grinding volume different, and then causes precision index such as face type, depth of parallelism and light ring to reduce. Therefore, the processing is difficult, and the production efficiency and the yield of the finished product are low.
Through retrieval, the existing large-caliber special-shaped plane processing method (application publication number: CN 107598715A, application publication date: 2018.01.19) comprises the following steps: forming, grinding, rough polishing, polishing by a ring polishing machine, and polishing and finishing; cutting, forming and processing the blank to meet the requirement of the precision of the designed overall dimension, and detecting the overall dimension and the surface shape by adopting a laser tracker or three-coordinate system; the grinding is processed by a traditional method or a numerical control small tool (or a robot), and surface shape detection is carried out by a laser tracker or three-coordinate system; the surface shape detection equipment is used for detecting the optical mirror surface, the polishing and the finishing can further improve the surface shape quality of the mirror surface through a numerical control small tool (comprising magneto-rheological or ion beams) according to the actual processing difficulty and the requirement of the construction period of the mirror surface, and finally the requirements of the final inspection of the quality of the mirror surface and the like meet the design requirements. Although the process can ensure the quality of the mirror surface, the processing process is complex and the production cost is high.
Disclosure of Invention
Technical problem to be solved by the invention
Aiming at the problems of high processing difficulty, complex process and high production cost of the large-caliber plane mirror, the invention provides the processing process of the large-caliber plane mirror, which has simple operation steps, adopts a classical polishing method as a final polishing procedure, reduces the production cost and simultaneously ensures higher production efficiency and qualified rate of finished products.
Technical scheme
In order to solve the problems, the technical scheme provided by the invention is as follows:
a processing technology of a large-caliber plane mirror comprises the following steps:
step one, coarse grinding and forming, wherein the forming size and the surface type are controlled;
step two, finely grinding and polishing the first surface, and primarily adjusting the surface aperture;
step three, finely grinding and polishing the second surface, and primarily adjusting the parallelism between the surface aperture and the two surfaces;
and step four, sequentially and finely polishing the two surfaces by using a classical polishing method, and finely adjusting the surface aperture and the parallelism between the two surfaces.
Furthermore, in the fourth step, the workpiece is bonded on the aluminum base plate by using a plurality of conical glue points for polishing.
Further, the fourth step includes:
i, preparing the glue dots;
ii, uniformly coating protective glue on one surface of the workpiece, and heating the glued surface to 40-50 ℃ after the protective glue is dried completely;
iii, taking a plurality of glue points, melting the conical heads of the glue points, and vertically bonding the melted glue points on one surface of the workpiece coated with the protective glue, so that the glue points are uniformly distributed on the surface of the workpiece, and the bonding area of each glue point and the workpiece is ensured to be uniform and equal;
iv, padding a plurality of rectangular cushion blocks between the glue points on the workpiece, heating the adhesive surface of the aluminum bottom plate, pressing the adhesive surface on the glue points of the plane mirror, and naturally cooling;
and v, placing the workpiece on a double-shaft machine, and polishing the side of the workpiece, which is not coated with the protective adhesive, by using a classical polishing method for 2-3 hours;
and vi, finely polishing the other surface of the workpiece by using the method from the step ii to the step v in the step four, and correcting the positions of the parallel light bands of the two surfaces of the workpiece while polishing until the parallel light bands of the two surfaces are centered.
Furthermore, the glue dots are prepared from special rosin, pure asphalt and talcum powder according to the mass ratio of 7: 1, and the preparation method comprises the following steps: firstly melting rosin, then adding asphalt, controlling the temperature at 150 ℃ by using an electric heater with adjustable temperature to ensure that grease does not volatilize, continuously stirring for 40-60 minutes, uniformly adding talcum powder while stirring after the rosin is completely melted, standing for 10-15 minutes, pouring into a conical die for molding, cooling, solidifying and demoulding to obtain the glue dots.
Further, the size specification of the glue dots is as follows: the diameter of the bottom surface is phi 10mm, and the height of the cone is 8 mm.
Furthermore, 16 glue dots are distributed on the surface of the workpiece, the center of the workpiece is used as the center of a circle, 6 glue dots are uniformly arranged on the circumference of phi 60mm at equal intervals, and 10 glue dots are uniformly arranged on the circumference of phi 180mm at equal intervals.
Further, in the fourth step, a plane interferometer is used for detecting the polished surface after the two surfaces of the workpiece are finely polished and before the workpiece is placed on a disk, the number of surface f-turns N within the range of phi 150mm is required to be 0.5, and the light band is smooth and has no obvious local error.
Further, in the first step, the material is roughly ground and formed according to the size of 220mm multiplied by 188mm multiplied by 10.40mm, after rough grinding, a flatness detector with the diameter of 200mm is used for detecting the surface of the workpiece, and the surface shape of two sides of the workpiece is required to be less than or equal to 0.005 mm.
Further, in the second step, after polishing, the surface f-number N of the first surface in the range of Φ 150mm is required to be 2, the local error Δ N is required to be 0.5, and the polished surface is inspected to be free of scratches by using a 6-time magnifier.
Further, in the third step, after polishing, the surface f-number N of the second surface in the range of Φ 150mm is required to be 2, the local error Δ N is required to be 0.5, the polished surface is inspected to be free of scratches by using a 6-time magnifier, and the parallelism between the polished surface and the first surface is less than or equal to 30 ".
Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) the processing technology for the large-aperture plane mirror provided by the invention has simple operation steps, adopts a classical polishing method as a final polishing procedure, reduces the production cost, and simultaneously ensures higher production efficiency and qualified rate of finished products;
(2) according to the processing technology of the large-aperture plane mirror, in the step of a classical polishing technology, a workpiece to be polished and an aluminum bottom plate are connected by using conical glue points, and the glue points are used for providing uniform tension for all parts of the surface of the workpiece, so that the surface tension of the workpiece is uniformly distributed, the deformation quantity of the workpiece in the polishing process is reduced, the difference of the abrasion quantity from the edge to the center of the workpiece is reduced, the surface aperture of the workpiece is optimized, and the quality of the workpiece is improved;
(3) according to the processing technology of the large-aperture plane mirror, provided by the invention, the glue dots are manufactured by adopting a special technology, so that the hardness of the glue dots is uniform and moderate, and a special glue dot arrangement mode is matched, so that the purposes of providing uniform tension for all parts on the surface of a workpiece and uniformly distributing the surface tension of the workpiece are achieved, and a foundation is laid for improving the polishing quality;
(4) the invention provides a processing technology of a large-caliber plane mirror, which is used for processing an aircraft instrument cover plate plane mirror with the overall dimension of 220mm multiplied by 188mm multiplied by 10mm, the qualification rate of each 100 plane mirrors can reach more than 95%, the production cost of a single plane can be saved by about 15%, the thickness error delta D of the finished product of the aircraft instrument cover plate plane mirror prepared is less than or equal to 0.001mm, the parallelism theta of the upper surface and the lower surface is less than or equal to 20%, the surface number of turns N is 1, the local error delta N is 0.3, and the product consistency is high.
Drawings
FIG. 1 is a flow chart of the process of the present invention;
FIG. 2 is a schematic view showing the arrangement of glue dots and pads on a workpiece;
FIG. 3 is a side view of the aluminum base plate and the workpiece being joined by glue sites;
in the drawings: 1. a workpiece; 2. glue dispensing; 3. cushion blocks; 4. an aluminum base plate.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.
As shown in fig. 1, a processing technology of a large-aperture plane mirror, in this embodiment, the large-aperture plane mirror is an aircraft instrument cover plate plane mirror, and the external dimension is 220mm × 188mm × 10mm, and the processing steps are as follows:
step one, coarse grinding and forming: the method comprises the following steps of blanking, roughly grinding and forming according to the size of 220mm multiplied by 188mm multiplied by 10.40mm, detecting the surface of a workpiece 1 by using a planeness detector with the diameter of 200mm after roughly grinding, and requiring that the surface types of two sides of the workpiece 1 are less than or equal to 0.005 mm;
step two, fine grinding and primary polishing of the first surface:
i, a round glass plate with phi of 250mm is manufactured, the surface f-number N of the round glass plate in the phi 150mm range is controlled to be 1, and the local error delta N is controlled to be 0.5;
ii, coating a surface of the roughly ground workpiece 1 with a protective coatingProtective glue, using 417#Adhering one surface of the workpiece 1 coated with the protective glue to the round glass plate by using the glue;
iii, then putting the workpiece 1 into a grinding machine to grind the surface of the workpiece, which is not coated with the protective adhesive, wherein the grinding depth is 0.15 mm; after fine grinding, detecting the polished surface by using a planeness detector with the diameter of phi 200mm, wherein the surface type of the polished surface is required to be less than or equal to 0.005 mm;
iv, cleaning the workpiece 1, placing the workpiece on a four-axis high-speed polishing machine, polishing the workpiece for 1.5 hours by using a polyurethane polishing sheet, detecting a polished surface by using a plane interferometer after polishing, wherein the surface f-number N within the phi 150mm range is required to be 2, the local error delta N is required to be 0.5, a magnifying lens with 6 times is used for checking that the polished surface is not scratched, and then lightly knocking the lower disc by using a small wooden hammer;
step three, fine grinding and primary polishing of a second surface: processing a second surface of the workpiece 1 by using the method of the steps ii-iv in the second step, controlling the parallelism between two surfaces of the workpiece 1 to be 30", and then performing bottom plate discharging and cleaning;
step four, fine polishing:
i, preparing a conical glue dot 2 by using special rosin, pure asphalt and talcum powder according to the mass ratio of 7: 1, wherein the size specification of the glue dot 2 is as follows: the diameter of the bottom surface is phi 10mm, and the height of the cone is 8 mm; the manufacturing method comprises the following steps: firstly melting rosin, then adding asphalt, controlling the temperature at 150 ℃ by using an electric heater with adjustable temperature to ensure that grease does not volatilize, continuously stirring for 40-60 minutes, uniformly adding talcum powder while stirring after the rosin is completely melted, standing for 10-15 minutes, pouring into a conical mould for forming, cooling, solidifying and demoulding to obtain the glue dots 2;
ii, wiping one surface of the workpiece 1 generated in the third step clean in a constant temperature chamber with the temperature of 24-26 ℃, uniformly coating protective glue, and heating the workpiece on a heater until the surface temperature is 40-50 ℃ after the protective glue is dried;
iii, melting the conical head of the glue dots 2 by using an alcohol lamp, and vertically bonding the conical head on one surface of the workpiece 1 coated with the protective glue, wherein as shown in fig. 2, 6 glue dots 2 are uniformly arranged on the circumference of phi 60mm at equal intervals by taking the center of the workpiece 1 as the center of a circle, 10 glue dots 2 are uniformly arranged on the circumference of phi 180mm at equal intervals, and after the glue dots 2 are completely cooled, checking the other surface of the workpiece 1 to ensure that the bonding area of each glue dot 2 is uniformly equal to that of the workpiece 1;
iv, padding four rectangular cushion blocks 3 around the center of the workpiece 1 between the inner ring glue points 2 and the outer ring glue points 2 on the workpiece 1, then taking an aluminum bottom plate 3 with the diameter of phi 220-240 mm, heating the adhesive surface of the aluminum bottom plate 3 to 120 ℃, as shown in the figure 3, pressing the aluminum bottom plate 3 on the glue points 2 of the plane mirror, and naturally cooling;
v, placing the polished surface on a double-shaft machine, polishing the polished surface for 2-3 hours by using a classical polishing method, and detecting the polished surface by using a plane interferometer after polishing, wherein the surface f-number N within the range of phi 150mm is required to be 0.5, and the light band is smooth without obvious local errors;
vi, turning over the lower disc, namely finely polishing the other surface of the workpiece 1 by using the same method of the ii-v steps in the fifth step, polishing the other surface while measuring and observing the positions of the parallel light bands of the two surfaces of the workpiece 1 by using a plane interferometer, increasing counter weights at corresponding positions of the aluminum bottom plate 3 according to the position deviation condition of the parallel light bands, changing the pressure distribution of the aluminum bottom plate 3 on the workpiece 1 until the parallel light bands of the two surfaces are observed to be centered, and thus reducing the parallelism error of the two surfaces; detecting the polished surface by using a plane interferometer after polishing, wherein the surface f-number within the phi 150mm range is required to be 0.5 when N is equal to 0.5, and the light band is smooth without obvious local errors; and then cleaning the lower disc to obtain a finished plane mirror product of the instrument cover plate of the airplane.
The processing technology of the large-caliber plane mirror in the embodiment is simple to operate and low in cost, the yield of every 100 plane mirrors with the instrument cover plate of the airplane processed by the technology can reach more than 95%, and the production cost of a single plane mirror is saved by about 15%; and the thickness error delta D of the prepared plane mirror finished product of the plane mirror with the instrument cover plate of the plane is less than or equal to 0.001mm, the parallelism theta of the upper surface and the lower surface is less than or equal to 20 percent, the surface f-number N is 1, the local error delta N is 0.3, and the consistency of the product is high.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (7)
1. A processing technology of a large-caliber plane mirror is characterized by being applied to an aircraft instrument cover plate plane mirror and comprising the following steps:
step one, coarse grinding and forming, wherein the forming size and the surface type are controlled;
step two, finely grinding and polishing the first surface, and primarily adjusting the surface aperture;
step three, finely grinding and polishing the second surface, and primarily adjusting the parallelism between the surface aperture and the two surfaces;
step four, sequentially and finely polishing the two surfaces by using a classical polishing method, and finely adjusting the surface aperture and the parallelism between the two surfaces;
in the fourth step, the workpiece (1) is bonded on the aluminum bottom plate (4) by a plurality of conical glue points (2) for polishing;
the size specification of the glue dots (2) is as follows: the diameter of the bottom surface is phi 10mm, and the height of the cone is 8 mm;
the fourth step comprises:
i, preparing the glue dots (2);
ii, uniformly coating protective glue on one surface of the workpiece (1), and heating the glued surface to 40-50 ℃ after the protective glue is dried completely;
iii, taking a plurality of glue points (2), melting the conical heads of the glue points (2), and vertically bonding the melted glue points to one surface of the workpiece (1) coated with the protective glue, so that the glue points (2) are uniformly distributed on the surface of the workpiece (1), and the bonding area of each glue point (2) and the workpiece (1) is ensured to be uniform and equal;
iv, padding a plurality of rectangular cushion blocks (3) between the glue points (2) on the workpiece (1), heating the adhesive surface of the aluminum bottom plate (4), pressing the adhesive surface on the glue points (2) of the plane mirror, and naturally cooling;
v, placing the workpiece on a double-shaft machine, and polishing the side, which is not coated with the protective glue, of the workpiece (1) by a classical polishing method for 2-3 hours;
vi, turning the lower disc, finely polishing the other surface of the workpiece (1) by using the same method of the steps ii to v in the fourth step, when polishing the surface, measuring and observing the positions of the parallel light bands of the two surfaces of the workpiece (1) by using a plane interferometer while polishing, and adding a balance weight at the corresponding position of the aluminum bottom plate (4) according to the position deviation condition of the parallel light bands.
2. The process for machining a large-aperture plane mirror according to claim 1, wherein the process comprises the following steps: the glue dots (2) are prepared from special rosin, pure asphalt and talcum powder according to the mass ratio of 7: 1, and the preparation method comprises the following steps: firstly melting rosin, then adding asphalt, controlling the temperature at 150 ℃ by using an electric heater with adjustable temperature to ensure that grease does not volatilize, continuously stirring for 40-60 minutes, uniformly adding talcum powder while stirring after the rosin is completely melted, standing for 10-15 minutes, pouring into a conical die for molding, cooling, solidifying and demoulding to obtain the glue dots (2).
3. The process for machining a large-aperture plane mirror according to claim 2, wherein the process comprises the following steps: 16 glue points (2) are distributed on the surface of the workpiece (1), the center of the workpiece (1) is used as the center of a circle, 6 glue points (2) are uniformly arranged on the circumference of phi 60mm at equal intervals, and 10 glue points (2) are uniformly arranged on the circumference of phi 180mm at equal intervals.
4. The process for machining a large-aperture plane mirror according to any one of claims 1 to 3, wherein the process comprises the following steps: in the fourth step, a plane interferometer is used for detecting the polished surface after the two surfaces of the workpiece (1) are finely polished and before the workpiece is placed on a disk, the number of surface f-turns N within the range of phi 150mm is required to be 0.5, and the light band is smooth and has no obvious local error.
5. The process for machining a large-aperture plane mirror according to any one of claims 1 to 3, wherein the process comprises the following steps: in the first step, the workpiece (1) is subjected to blanking rough grinding and forming according to the size of 220mm multiplied by 188mm multiplied by 10.40mm, and the surface of the workpiece (1) is detected by a planeness detector with the diameter of 200mm after rough grinding, wherein the surface profile of two sides of the workpiece (1) is required to be less than or equal to 0.005 mm.
6. The process for machining a large-aperture plane mirror according to any one of claims 1 to 3, wherein the process comprises the following steps: in the second step, after polishing, the surface f-number N of the first surface in the range of phi 150mm is required to be 2, the local error delta N is 0.5, and the polished surface is inspected to be free of scratches by using a 6-time magnifier.
7. The process for machining a large-aperture plane mirror according to any one of claims 1 to 3, wherein the process comprises the following steps: in the third step, after polishing, the surface f-number N of the second surface in the phi 150mm range is required to be 2, the local error delta N is 0.5, the polished surface is inspected to be free of scratches by using a 6-time magnifier, and the parallelism between the polished surface and the first surface is less than or equal to 30%.
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| EP3479956A1 (en) * | 2017-11-07 | 2019-05-08 | Satisloh AG | Method for manufacturing optical elements according to a prescription |
| CN110682165A (en) * | 2019-11-06 | 2020-01-14 | 成都精密光学工程研究中心 | Planar optical element and processing method thereof |
| CN110720690A (en) * | 2019-09-28 | 2020-01-24 | 浙江金三发粘合衬有限公司 | Ultrathin nylon elastic adhesive interlining |
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2020
- 2020-08-27 CN CN202010877844.XA patent/CN111993189B/en active Active
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| CN101829946A (en) * | 2010-05-28 | 2010-09-15 | 江苏南晶红外光学仪器有限公司 | Technology for machining two surfaces of infrared window piece |
| CN103949952A (en) * | 2014-02-26 | 2014-07-30 | 四川欧瑞特光电科技有限公司 | Processing method of main lens of large-OD (Outer Diameter) deformable mirror |
| EP3124175B1 (en) * | 2015-07-31 | 2018-10-10 | Satisloh AG | Method for machining optical workpieces, in particular plastic spectacle lenses |
| EP3479956A1 (en) * | 2017-11-07 | 2019-05-08 | Satisloh AG | Method for manufacturing optical elements according to a prescription |
| CN208133747U (en) * | 2018-04-25 | 2018-11-23 | 嘉兴洁珂时装有限公司 | Multilayer tencel soft cloth fabric |
| CN110720690A (en) * | 2019-09-28 | 2020-01-24 | 浙江金三发粘合衬有限公司 | Ultrathin nylon elastic adhesive interlining |
| CN110682165A (en) * | 2019-11-06 | 2020-01-14 | 成都精密光学工程研究中心 | Planar optical element and processing method thereof |
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