CN111703624B - Lens and processing method thereof - Google Patents
Lens and processing method thereof Download PDFInfo
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- CN111703624B CN111703624B CN202010614998.XA CN202010614998A CN111703624B CN 111703624 B CN111703624 B CN 111703624B CN 202010614998 A CN202010614998 A CN 202010614998A CN 111703624 B CN111703624 B CN 111703624B
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- protective film
- lens
- plate
- film
- raw material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B33/00—Packaging articles by applying removable, e.g. strippable, coatings
- B65B33/02—Packaging small articles, e.g. spare parts for machines or engines
-
- 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
- G02B1/14—Protective coatings, e.g. hard coatings
Abstract
The invention relates to the technical field of lens coating, in particular to a lens and a processing method thereof, wherein the processing method comprises the following steps: (S1), taking the formed plate for standby; (S2) attaching first protective films to the front and back surfaces of the formed plate; (S3) tearing off the first protective film on the front surface of the formed plate, and then sequentially attaching a second protective film and a third protective film on the front surface of the formed plate; (S4) carrying out CNC cutting on the formed plate obtained in the step (S3) to form a plurality of uniformly distributed semi-finished products; (S5), cleaning and drying the semi-finished product, and tearing off the third protective film to obtain the lens. According to the processing method, the second protective film and the third protective film are covered on the front surface of the formed plate firstly, and the formed plate is processed into a plurality of lenses, so that the process of sequentially pasting the lenses one by one is omitted, the protective film after CNC cutting is matched with the front surface of the lenses, the protective film can completely cover the front surface of the lenses, and the yield of the lenses is greatly improved.
Description
Technical Field
The invention relates to the technical field of lens coating, in particular to a lens and a processing method thereof.
Background
The flat plate lens is obtained by printing PMMA or PC and CNC cutting, and the main materials are PMMA and PC. If the hardness requirement on the lens surface is not high, a raw plate (unreinforced plate) can be directly used as the material of the flat lens, so that the cost is reduced.
After a traditional flat lens is cut by CNC (computer numerical control) on a raw material plate, protective films are required to be pasted on the front surface of the lens one by one to meet the delivery requirement; however, focusing is difficult in the film changing process, and even if the surface area of the used protective film is larger than the area of the front surface of the lens, the situation that the protective film cannot completely cover the front surface of the lens still easily occurs, so that the yield is reduced, the efficiency is reduced, the using amount of the protective film is increased, and the processing cost is increased.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide a lens processing method, wherein a second protective film and a third protective film are covered on the front surface of a formed plate before CNC cutting, and a plurality of lenses are processed along with the formed plate, so that the process of film-sticking the lenses one by one in the later period is omitted, and the protective film after CNC cutting is matched with the front surface of the lenses, so that the protective film can completely cover the front surfaces of the lenses, the yield of the lenses is greatly improved, and the efficiency is higher than that of the traditional film-sticking in the later period. The processing method has the advantages of simple operation, convenient control, high production efficiency and low production cost, and can be used for large-scale production.
Another object of the present invention is to provide a lens, wherein the front surface of the molded plate is covered with a second protective film and a third protective film before CNC cutting, so that the time and the number of times of exposing the front surface of the lens to air are reduced, thereby having a better dustproof effect and reducing the occurrence of air bubbles between the lens and the second protective film.
The purpose of the invention is realized by the following technical scheme: a lens processing method comprises the following steps:
(S1), taking the formed plate for standby;
(S2) attaching first protective films to the front and back surfaces of the formed plate;
(S3) tearing off the first protective film on the front surface of the formed plate, and then sequentially attaching a second protective film and a third protective film on the front surface of the formed plate;
(S4) carrying out CNC cutting on the formed plate obtained in the step (S3) to form a plurality of uniformly distributed semi-finished products;
(S5), cleaning and drying the semi-finished product, and tearing off the third protective film to obtain the lens.
According to the processing method of the lens, the second protective film and the third protective film are covered on the front surface of the formed plate before CNC cutting, and the formed plate is processed into a plurality of uniformly distributed lenses, so that the process of film-sticking the lenses one by one in the later period is omitted, and the protective film after CNC cutting is matched with the front surface of the lenses, so that the protective film can completely cover the front surfaces of the lenses, the yield of the lenses is greatly improved, and the film-sticking efficiency is higher than that of the traditional film-sticking method in the later period. In the step (S2), the first protective films are attached to the front and back surfaces of the formed plate, so that the formed plate is prevented from being scratched due to friction in the conveying process; in the step (S3), the first protective film of the front surface of the molded plate material is replaced with a second protective film and a third protective film, so that the molded plate material, the second protective film and the third protective film are simultaneously processed into a single lens in the CNC cutting process of the step (S4), and the second protective film of the semi-finished product surface is prevented from being scratched by the blocking effect of the third protective film. Compared with the traditional post-lamination, the cost of the protective film used in the traditional post-lamination mode is higher because the protective film is a finished product protective film which is processed into a corresponding single lens firstly, and the surface area of the used finished product protective film is larger than the front surface area of the lens. In the step (S5), the third protective film is torn off to present the second protective film intact due to the scratch of the third protective film easily caused during the machining process by cleaning to remove the dust remaining during the CNC cutting process. The one side that first protection film is close to the lens, the one side that the second protection film is close to the lens and the one side that the third protection film is close to the second protection film all are stained with ya keli and glue to the bonding is convenient for.
Because just cover second protection film and third protection film in the front of shaping panel before CNC cutting, reduced the time and the number of times that the front of lens exposes to the air, consequently have better dustproof effect, reduced the condition that has the bubble between lens and the second protection film.
Preferably, the forming plate is formed by printing ink on a raw material plate according to layout design and drying;
the raw material plate is a PMMA plate or a PC plate;
by adopting the technical scheme, the PMMA plate or the PC plate is suitable for flat mobile phone lenses/camera lenses. PC has better impact toughness than PMMA, but there is a gap from PMMA in other criteria, especially surface hardness. After surface hardening treatment, the hardness is only about HB, and the lens is easier to be scratched in the using process. Compared with PC, PMMA has high light transmittance up to 92 percent, good weather resistance, difficult oxidation and cracking, surface hardness which can reach above H level without hardening, and hardness which can reach above 4H level after hardening. And printing ink on the raw material plate according to the layout so as to divide a plurality of lens patterns on the raw material plate.
Preferably, the first protective film is a PE protective film, an AR protective film, a PP protective film, an OPP protective film, a PVC protective film, or a PET protective film.
By adopting the technical scheme, the formed plate is prevented from being scratched due to friction in the conveying process.
Preferably, in the step (S4), before performing CNC cutting on the raw material plate obtained in the step (S3), the method further includes: positioning holes are punched on both sides of the raw material plate in the step (S3).
By adopting the technical scheme, the raw material plate can be conveniently positioned in the CNC cutting process, and high-precision cutting is realized.
Preferably, the second protective film is a PET protective film; the third protective film is a PE protective film.
Adopt above-mentioned technical scheme, the hardness of PET protection film is higher than the hardness of PE protection film, and the roughness of lens is low, and the roughness of PET protection film and the roughness of PE protection film all are lower than the lens, and the adhesion effect between PET protection film and the lens is much better than the adhesion effect between PET protection film and the PE protection film, has guaranteed the front of lens and the adhesion stability of second protection film, avoids tearing together tearing removing third protection film in-process and taking the second protection film.
Preferably, the peeling force between the raw material plate and the second protective film is greater than the peeling force between the second protective film and the third protective film.
By adopting the technical scheme, the bonding stability of the front surface of the lens and the second protective film is ensured, and the situation that the third protective film is torn off together with the second protective film in the process of tearing off the third protective film is avoided.
Preferably, the step (S6) further includes: after the third protective film is torn off, the handle part is attached to the surface of the second protective film.
Adopt above-mentioned technical scheme, the user directly tears handle portion and can tear off together with the second protection film, and the user of being convenient for tears off the second protection film.
Preferably, the peeling force between the handle portion and the second protective film is greater than the peeling force between the raw material plate and the second protective film.
Adopt above-mentioned technical scheme, more be favorable to the user to tear the second protection film with the help of handle portion. Specifically, the handle portion comprises a bottom glue layer and a PET film bonded with the bottom glue layer, the PET film protrudes out of the second protective film, and the bottom glue layer is clamped between the PET film and the second protective film; the primer layer is a silica gel adhesive layer, and the silica gel is better in thermal stability and higher in adhesive strength than other adhesives.
The other purpose of the invention is realized by the following technical scheme: a lens is prepared by adopting the processing method of the lens.
Specifically, the lens includes the lens body, laminate in the first protection film of the reverse side of lens body and laminate in the positive second protection film of lens body, the second protection film laminating has handle portion. Further, handle portion includes primer layer and the PET membrane of gluing with the primer layer, the PET membrane stretches out suddenly the second protection film, the primer layer presss from both sides and locates between PET membrane and the second protection film. The one side that first protection film is close to the lens body with the one side that the second protection film is close to the lens body all is stained with ya keli and glues to the bonding is convenient for.
The invention has the beneficial effects that: according to the processing method of the lens, the second protective film and the third protective film are covered on the front surface of the formed plate before CNC cutting, and the formed plate is processed into a plurality of lenses, so that the process of film-sticking the lenses one by one in the later period is omitted, and the protective film after CNC cutting is matched with the front surface of the lenses, so that the protective film can completely cover the front surfaces of the lenses, the yield of the lenses is greatly improved, and the film-sticking efficiency is higher than that of the traditional film-sticking method in the later period. The processing method has the advantages of simple operation, convenient control, high production efficiency and low production cost, and can be used for large-scale production.
According to the lens, the second protective film and the third protective film are covered on the front surface of the forming plate before CNC cutting, so that the time and the times of exposing the front surface of the lens to air are reduced, a better dustproof effect is achieved, and the condition that air bubbles exist between the lens and the second protective film is reduced.
Drawings
FIG. 1 is a schematic view of the lens of the present invention without the handle portion;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic view of a lens with a handle according to the present invention;
FIG. 4 is a cross-sectional view B-B of FIG. 3;
FIG. 5 is a schematic structural view of the formed board after punching positioning holes;
FIG. 6 is a schematic representation of the product of example 4 of the present invention;
FIG. 7 is a schematic diagram of the product of comparative example 1.
The reference signs are: 1. forming a plate; 2. a first protective film; 3. a second protective film; 4. positioning holes; 5. a lens body; 6. a handle portion; 61. a primer layer; 62. a PET film.
Detailed Description
For the understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
Example 1
As shown in fig. 1-2, a lens includes a lens body 5, a first protective film 2 attached to a back surface of the lens body 5, and a second protective film 3 attached to a front surface of the lens body 5, wherein an acrylic adhesive is adhered to both a surface of the first protective film 2 adjacent to the lens body 5 and a surface of the second protective film 3 adjacent to the lens body 5.
Example 2
This example differs from example 1 in that:
as shown in fig. 3 to 4, the handle portion 6 is attached to the second protective film 3.
The handle portion 6 comprises a bottom glue layer 61 and a PET film 62 adhered to the bottom glue layer 61, the PET film 62 protrudes out of the second protection film 3, and the bottom glue layer 61 is sandwiched between the PET film 62 and the second protection film 3.
Example 3
As shown in fig. 1, 2 and 5, a method for processing a lens includes the following steps:
(S1), taking the formed plate 1 for standby;
(S2) attaching the first protection films 2 to both the front and back surfaces of the formed plate 1;
(S3), removing the first protective film 2 on the front surface of the formed plate 1, and sequentially attaching a second protective film 3 and a third protective film on the front surface of the formed plate 1;
(S4) punching positioning holes 4 on two sides of the raw material plate obtained in the step (S3), and performing CNC cutting on the formed plate 1 obtained in the step (S3) to form a plurality of uniformly distributed semi-finished products;
(S5), cleaning and drying the semi-finished product, and tearing off the third protective film to obtain the lens.
The forming plate 1 is formed by printing ink on a raw material plate according to layout design and then drying;
the raw material plate is a PMMA plate.
The first protective film 2 is a PE protective film.
The second protective film 3 is a PET protective film; the third protective film is a PE protective film.
The peeling force between the raw material plate and the second protective film 3 is larger than the peeling force between the second protective film 3 and the third protective film.
Example 4
This example differs from example 3 in that:
as shown in fig. 3 to 4, the step (S6) further includes: after the third protective film is peeled off, the handle portion 6 is attached to the surface of the second protective film 3.
The peeling force between the handle portion 6 and the second protective film 3 is larger than the peeling force between the raw material plate and the second protective film 3.
The handle portion 6 comprises a bottom glue layer 61 and a PET film 62 adhered to the bottom glue layer 61, the PET film 62 protrudes out of the second protection film 3, and the bottom glue layer 61 is sandwiched between the PET film 62 and the second protection film 3.
Example 5
This example differs from example 4 in that:
the raw material plate is a PC plate;
the first protective film 2 is a PP protective film.
Comparative example 1
This example differs from example 3 in that:
the lens is prepared by adopting the following lens processing method, and specifically comprises the following steps:
(S1), taking the formed plate 1 for standby;
(S2) attaching the first protection films 2 to the front and back surfaces of the formed plate 1;
(S3) punching positioning holes 4 at both sides of the formed plate 1 of the step (S2), and performing CNC cutting on the formed plate 1 of the step (S2) to form a plurality of independent semi-finished products;
(S4), after cleaning and drying, tearing off the first protective films 2 on the front surfaces of the semi-finished products one by one, and attaching the second protective films 3 on the front surfaces of the semi-finished products one by one to obtain the lens.
The forming plate 1 is formed by printing ink on a raw material plate according to layout design and then drying;
the raw material plate is a PMMA plate.
The first protective film 2 is a PE protective film.
The second protective film 3 is a PET protective film.
Example 6
The production conditions are as follows: in a production workshop, PM2.5 meets the secondary standard requirement of environmental air quality standard (GB 3095-2012).
Lenses were produced according to the embodiment of example 4 on the premise of the above production conditions, and the results are shown in fig. 6; lenses were produced according to the embodiment of comparative example 1 on the premise of the above production conditions, and the results are shown in fig. 7; and observing the bubble condition on the surface of the lens.
As can be seen from FIGS. 6 and 7, the lens surface obtained by the lens processing method of the present invention is smooth and free of bubbles, while the lens surface obtained by comparative example 1 is remarkably bubbled; the processing method of the lens has better dustproof effect and reduces the condition that air bubbles exist between the lens and the second protective film.
The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.
Claims (2)
1. A lens processing method is characterized by comprising the following steps:
(S1), taking the formed plate for standby;
(S2) attaching first protective films to the front and back surfaces of the formed plate;
(S3) tearing off the first protective film on the front surface of the formed plate, and then sequentially attaching a second protective film and a third protective film on the front surface of the formed plate;
(S4) carrying out CNC cutting on the formed plate obtained in the step (S3) to form a plurality of uniformly distributed semi-finished products;
(S5), after cleaning and drying the semi-finished product, tearing off the third protective film to obtain the lens;
the forming plate is formed by printing ink on a raw material plate according to layout design and then drying;
the raw material plate is a PMMA plate or a PC plate;
the first protective film is a PE protective film, an AR protective film, a PP protective film, an OPP protective film, a PVC protective film or a PET protective film;
in the step (S4), before performing CNC cutting on the raw material plate obtained in the step (S3), the method further includes:
punching positioning holes on two sides of the raw material plate in the step (S3);
the second protective film is a PET protective film; the third protective film is a PE protective film;
the peeling force between the raw material plate and the second protective film is larger than that between the second protective film and the third protective film;
the step (S6) further includes: after the third protective film is torn off, a handle part is attached to the surface of the second protective film;
the peeling force between the handle part and the second protective film is larger than that between the raw material plate and the second protective film;
the handle portion comprises a bottom glue layer and a PET film adhered to the bottom glue layer, the PET film protrudes out of the second protective film, and the bottom glue layer is clamped between the PET film and the second protective film.
2. An ophthalmic lens, characterized by: the lens of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010614998.XA CN111703624B (en) | 2020-06-30 | 2020-06-30 | Lens and processing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010614998.XA CN111703624B (en) | 2020-06-30 | 2020-06-30 | Lens and processing method thereof |
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| CN111703624A CN111703624A (en) | 2020-09-25 |
| CN111703624B true CN111703624B (en) | 2022-04-22 |
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| CN114043756A (en) * | 2021-12-17 | 2022-02-15 | 浙江兆奕光电有限公司 | Manufacturing method of double-sided laminated composite board |
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| CN104972681A (en) * | 2015-05-26 | 2015-10-14 | 深圳市中联讯科技有限公司 | Method for manufacturing double-curved-surface lens |
| CN107738135A (en) * | 2017-11-24 | 2018-02-27 | 深圳市精品诚电子科技有限公司 | The method of machining eyeglass chip removal |
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| JP6022862B2 (en) * | 2012-05-08 | 2016-11-09 | 株式会社不二製作所 | Hard brittle substrate cutting method and cutting device |
| CN203344387U (en) * | 2013-05-20 | 2013-12-18 | 深圳欧菲光科技股份有限公司 | Protective film assembly |
| CN204810314U (en) * | 2015-03-19 | 2015-11-25 | 东莞市鼎一通讯科技有限公司 | Electron consumer goods are supporting to be lapped with glass |
| JP6638514B2 (en) * | 2015-03-31 | 2020-01-29 | 日本電気硝子株式会社 | Cutting method for brittle substrate |
| JP6765949B2 (en) * | 2016-12-12 | 2020-10-07 | 株式会社ディスコ | Wafer processing method |
| CN106980229A (en) * | 2017-05-11 | 2017-07-25 | 深圳市中联讯科技有限公司 | A kind of preparation method of cambered surface eyeglass |
| CN107219604A (en) * | 2017-07-21 | 2017-09-29 | 深圳市精品诚电子科技有限公司 | A kind of lens structure and its processing method |
| CN108790342A (en) * | 2018-06-08 | 2018-11-13 | 深圳市精品诚电子科技有限公司 | A kind of mobile-phone lens and its production technology |
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| CN104972681A (en) * | 2015-05-26 | 2015-10-14 | 深圳市中联讯科技有限公司 | Method for manufacturing double-curved-surface lens |
| CN107738135A (en) * | 2017-11-24 | 2018-02-27 | 深圳市精品诚电子科技有限公司 | The method of machining eyeglass chip removal |
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