US4865670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a high quality polarizer
Assignee: Individual
•
Filing: 1988-02-05
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Granted: 1989-09-12
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Expires: 2008-02-05
Abstract
Abstract A method and apparatus of applying a polarizing film to a curved lens such as a polarizing prescription lens is disclosed. Mounting of the film on a specialized template allows for convenient drying and rewetting.
Inventors
- 👤 Mortimer Marks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:24
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/12; B; B29; B29D; B29D11/00; B29D11/00865; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10807; B32B17/10899; B32B17/10935; B32B17/10981; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/3163
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
160 words
A method of making a polarized lens, comprising the steps of: (a) making a flexible and stretchable polarizing film; (b) mounting said polarizing film on a plate having a hole disposed therein, whereby said hole and said polarized film together define a chamber for containing a liquid; (c) aging said mounted film; (d) filling said chamber with a softening solution after said aging; (e) draining said softening solution; (f) putting said film and said lens in facing spaced relationship to each other, with the surface of the lens to be adhered to the film in facing relationship to the surface of the film to be adhered to the lens; (g) bringing said lens and said film closer together and advancing them relatively to the point where said film and said lens are in intimate contact over an area and said liquid has bene substantially excluded from between said lens and said film; and (h) curing said film on said lens.
Claim 2
Independent Claim
160 words
A method of making a polarized lens, comprising the steps of: (a) making a flexible and stretchable polarizing film; (b) mounting said polarizing film on a plate having a hole disposed therein, whereby said hole and said polarized film together define a chamber for containing a liquid; (c) aging said mounted film; (d) filling said chamber with a softening solution after said aging; (e) draining said softening solution; (f) putting said film and said lens in facing spaced relationship to each other, with the surface of the lens to be adhered to the film in facing relationship to the surface of the film to be adhered to the lens; (g) bringing said lens and said film closer together and advancing them relatively to the point where said film and said lens are in intimate contact over an area and said liquid has bene substantially excluded from between said lens and said film; and (h) curing said film on said lens.
Claim 3
Dependent Claim
26 words
A method as in claim 1, wherein a small quantity of liquid is introduced between said surfaces of said lens and said film during said advancing.
Claim 4
Dependent Claim
54 words
A method of making a polarized lens as in claim 1, further comprising the step of: (a) forming said polarizing film into a shape which approximately conforms to the shape of the surface of said lens to which said polarizing film is to be adhered prior to bringing said film closer to said lens.
Claim 5
Dependent Claim
11 words
A method as in claim 3 wherein said liquid is water.
Claim 6
Independent Claim
207 words
A method of making a polarized prescription sunglass lens, comprising the steps of: (a) taking a blank lens with a given prescription power and grinding the edges of the same to a shape which conforms to the shape of a desired spectacle frame; (b) making a flexible and stretchable polarizing film; (c) mounting said polarizing film on a plate having a hole disposed therein, whereby said hole and said polarized film together define a chamber for containing a liquid; (d) aging said mounted film; (e) filling said chamber with a softening solution after said aging; (f) draining said softening solution; (g) pressure forming said polarizing film into a shape which approximately conforms to the shape of the surface of said lens to which said polarizing film is to be adhered; (h) putting said film and said lens in facing spaced relationship to each other, with the surface of the lens to be adhered to the film in facing relationship to the surface of the film to be adhered to the lens; (i) advancing said lens relative to said film to the point where said film and said lens are in intimate contact over an active area of said lens; and (j) curing said film on said lens.
Claim 7
Independent Claim
207 words
A method of making a polarized prescription sunglass lens, comprising the steps of: (a) taking a blank lens with a given prescription power and grinding the edges of the same to a shape which conforms to the shape of a desired spectacle frame; (b) making a flexible and stretchable polarizing film; (c) mounting said polarizing film on a plate having a hole disposed therein, whereby said hole and said polarized film together define a chamber for containing a liquid; (d) aging said mounted film; (e) filling said chamber with a softening solution after said aging; (f) draining said softening solution; (g) pressure forming said polarizing film into a shape which approximately conforms to the shape of the surface of said lens to which said polarizing film is to be adhered; (h) putting said film and said lens in facing spaced relationship to each other, with the surface of the lens to be adhered to the film in facing relationship to the surface of the film to be adhered to the lens; (i) advancing said lens relative to said film to the point where said film and said lens are in intimate contact over an active area of said lens; and (j) curing said film on said lens.
Claim 8
Dependent Claim
41 words
The method as in claim 5 wherein said conforming is achieved by applying a lower pressure to the surface of said film opposite the surface to be adhered to the lens than the pressure present at said surface to be adhered.
Claim 9
Dependent Claim
92 words
A method as in claim 6 wherein said curing comprises the steps of: (k) applying said lens to said film with pressure; (1) allowing a period of time to pass; (m) baking said lens with said film disposed thereon for a period of time between three and twenty-five minutes at 60°-90° C.; (n) trimming the edge of the filter on the lens; (o) baking the trimmed lens for 15 minutes to six hours; (p) allowing the baked lens to dry; (q) applying a silication solution; and (r) applying a hard coat solution.
Claim 10
Dependent Claim
55 words
The method of claim 5 further comprising treating a CR-39 lens in preparation for film coating in which an acid surface preparation formula is put on a glass lens concave side and a convex surface of said CR-39 lens is laid onto the acid after which the CR-39 lens is washed in water and dried.
Claim 11
Dependent Claim
25 words
The method of claim 1, said softening solution comprising: Distilled Water Diacetone Alcohol Normal Propanol Acetic acid (glacial) Hydrochloric Acid (37%) (1% in distilled water).
Claim 12
Dependent Claim
47 words
A method as in claim 9, wherein concentrations are as follows: Distilled Water 80-150 parts by weight Diacetone Alcohol 0-3 parts by weight Normal Propanol 1-6 parts by weight Acetic Acid (glacial) 12-30 parts by weight Hydrochloric Acid (37%)(1% in distilled water ) 0-3 parts by weight.
Claim 13
Dependent Claim
57 words
The method of either claim 1 or claim 5, wherein a protective coating is applied to the polarizing film permitting stabilization of the film, the coating being comprised of: (a) a base comprising: Butyl Acetate Acetic Acid Toluene Methyl Isobutyl Ketone Butyl Lactate Normal Propanol XYSG (polyvinyl butyral finely ground) and (b) Ethyl Silicate Butyl acetate Toluene.
Claim 14
Dependent Claim
83 words
A method as in claim 11, wherein the concentrations are as follows: (a) fourteen parts of a base comprising: Butyl Acetate: 10-25 parts by weight Acetic Acid: 5-15 parts by weight Toluene: 12-30 parts by weight Methyl Isobutyl Ketone: 25-60 parts by weight Butyl Lactate: 0-30 parts by weight Normal Propanol: 0-30 parts by weight XYSG (polyvinyl butyral finely ground): 2-14 parts by weight and (b) Ethyl Silicate: 0.5-3 parts by weight Butyl Acetate: 4-6 parts by weight Toluene: 3-7 parts by weight.
Claim 15
Independent Claim
148 words
A method of making a polarizing lens, comprising the steps of: (a) spinning a casting solution on a plate in a substantially airtight chamber; (b) mounting a polarizing film on a plate having a hole disposed therein, whereby said hole and said polarized film together define a chamber for containing a liquid; (c) aging said mounted film; (d) filling said chamber with a softening solution after said aging; (e) draining said softening solution; (f) allowing said film to dry; (g) putting said film and said lens in facing spaced relationship to each other, with the surface of the lens to be adhered to the film in facing relationship to the surface of the film to be adhered to the lens; (h) advancing said lens toward said film to the point where said film and said lens are in intimate contact; and (i) curing said film on said lens.
Claim 16
Independent Claim
148 words
A method of making a polarizing lens, comprising the steps of: (a) spinning a casting solution on a plate in a substantially airtight chamber; (b) mounting a polarizing film on a plate having a hole disposed therein, whereby said hole and said polarized film together define a chamber for containing a liquid; (c) aging said mounted film; (d) filling said chamber with a softening solution after said aging; (e) draining said softening solution; (f) allowing said film to dry; (g) putting said film and said lens in facing spaced relationship to each other, with the surface of the lens to be adhered to the film in facing relationship to the surface of the film to be adhered to the lens; (h) advancing said lens toward said film to the point where said film and said lens are in intimate contact; and (i) curing said film on said lens.
Claim 17
Dependent Claim
31 words
A method as in claim 13, wherein softening solution is made by mixing the following: Distilled Water Diacetone Alcohol Normal Propanol Acetic acid (glacial) Hydrochloric Acid (37%) (1% in distilled water).
Claim 18
Dependent Claim
49 words
A method as in claim 14, wherein the concentrations are as follows: Distilled Water: 80-150 parts by weight Diacetone Alcohol: 0-3 parts by weight Normal Propanol: 1-6 parts by weight Acetic Acid (glacial): 12-30 parts by weight Hydrochloric acid (37%) (1% in distilled water ): 0-3 parts by weight.
References Cited (Backward Citations)
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