Title:
MANUFACTURE OF PLASTIC PHOTOCHROMIC LENS AND PLASTIC PHOTOCHROMIC LENS
Document Type and Number:
Japanese Patent JP3896656
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To manufacture a plastic photochromic lens which uniformly develops a color without receiving damage on the surface of the lens by a solvent or a deformation in the lens due to a high temperature.
SOLUTION: A photochromic substance is turned to a disperse dye, then this disperse dye is dispersed into an aqueous solution and a plastic lens is soaked into the aqueous solution. Thus it is possible to impregnate the lens with the photochromic substance from the surface of the lens and thereby manufacture the plastic photochromic lens.
Inventors:
Toru Saito
Shuji Naito
Nakajima Mikito
Shuji Naito
Nakajima Mikito
Application Number:
JP29922597A
Publication Date:
March 22, 2007
Filing Date:
October 30, 1997
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
B29D11/00; G02C7/10; C09K9/02; D06P5/00; G02B1/04; G02B1/10; (IPC1-7): B29D11/00; D06P5/00; G02B1/04; G02B1/10; G02C7/10; //C09K9/02
Domestic Patent References:
| JP7005623A | ||||
| JP9189978A | ||||
| JP9161561A | ||||
| JP60107030A |
Attorney, Agent or Firm:
Masahiko Ueyanagi
Osamu Suzawa
Osamu Suzawa
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