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US 4,865,670 AGranted
Method of making a high quality polarizer
OwnerMortimer Marksinventor
Life of this patent
Estimating the term…
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.
Claims15
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.
6 more elements
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.
8 more elements
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.
7 more elements
Dependencies are inferred from the claim text.