Claims
- 1. A method of manufacturing a polarized spectacle lens, comprising: bonding, with an adhesive, a plastic film having a thickness in a range of from 0.1 mm to 0.5 mm to one of opposing surfaces of a polarizing sheet to thereby form a laminate, said polarizing sheet comprising a polarizing film with a film of a material selected from a group consisting of cellulose triacetate film and cellulose acetate butyrate bonded to each of said opposing surfaces of said polarizing film, and having a thickness of not greater than 0.2 mm, a light transmissivity of 40% or higher and a polarization coefficient of 99.0% or higher; hot-pressing said laminate into a shape of which surface contours are similar to those of said spectacle lens; placing the hot-pressed laminate in a lens forming mold cavity with said plastic film facing inward of said cavity; and injecting a lens-forming resin fusible with said plastic film into said cavity.
- 2. The method according to claim 1 wherein said plastic film is of a polyurethane resin, and said lens-forming resin is a polyurethane resin.
- 3. The method according to claim 1 wherein said polarizing film comprises a polyvinyl type film colored with a heat-resistant dichromatic dyestuff and stretched.
- 4. The method according to claim 2 wherein said polarizing film comprises a polyvinyl type film dyed with a heat-resistant dichromatic dyestuff and stretched.
- 5. The method according to claim 2 wherein a transition-metal compound is mixed with said lens-forming polyurethane resin.
- 6. The method according to claim 1 wherein said hot pressing step comprises hot pressing said laminate into a shape wherein said plastic film forms a concave surface of said laminate.
- 7. The method according to claim 1 wherein said hot pressing step comprises hot pressing said laminate into a shape wherein said plastic film forms a convex surface of said laminate.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2000-404559 |
Dec 2000 |
JP |
|
Parent Case Info
[0001] This application is a Continuation-in-Part application of patent application Ser. No. 09/957,723 filed on Sep. 21, 2001.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09957723 |
Sep 2001 |
US |
Child |
10396029 |
Mar 2003 |
US |