Partially dyed plastic lens and method of manufacturing same

Details Partially dyed plastic lens and method of manufacturing same Partially dyed plastic lens and method of manufacturing same

1987-02-24

1988-10-25

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Nontextile, dyeing process or product, including inorganic...

Acrylate polymer substrate

8464, 8506, 8507, 8581, 351162, 351165, D06P 352, G02B 110, G02B 522, G02C 710

Patent

active

047801034

ABSTRACT:
A method for partially dyeing a plastic lens and plastic lens dyed by the method are herein disclosed, the method comprising forming a film of a nondyeable coating agent on the whole surface of the lens, cutting and removing at least part of the film and then immersing the plastic lens in a dyeing liquid to selectively dye the part of the lens from which the film is cut and removed, the method making it possible to provide a dyed lens having a clear boundary between the dyed and nondyed parts.

REFERENCES:
patent: 4145125 (1979-03-01), Chika

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