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 and cellulose acetate butyrate bonded to each of 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 a polyurethane resin, and said lens-forming resin is a polyurethane resin.
- 3. The method according to claim 2 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 a transition-metal compound is mixed with said lens-forming polyurethane resin.
- 5. The method according to claim 1 wherein said polarizing film comprises a polyvinyl type film colored with a heat-resistant dichromatic dyestuff and stretched.
- 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 convex surface of said laminate.
- 7. 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 and a film of a material selected from a group consisting of cellulose triacetate and cellulose acetate butyrate bonded to each of opposing surfaces of said polarizing film, and having a thickness of not greater than 0.2 mm. a light transmissivity of 40% 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 hot-pressed laminate in a lens forming mold cavity and said plastic film facing inward to said cavity: and injecting a lens-forming resin fusible with said plastic film into said cavity;wherein said hot pressing step comprises hot pressing said laminate into a shape wherein said plastic film forms a concave surface of said laminate.
- 8. A polarized spectacle lens comprising:a polarizing sheet comprising a polarizing film and a film of a material selected from a group consisting of cellulose triacetate and cellulose acetate butyrate bonded to each of opposing surfaces of said polarizing film, said polarizing sheet 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; a plastic film having a thickness in a range of from 0.1 mm to 0.5 mm bonded to one of opposing surfaces of a polarizing sheet with an adhesive to thereby form a laminate; and a layer of a lens-forming resin fused with said plastic film.
- 9. A polarized spectacle lens comprising:a polarizing sheet comprising a polarizing film and a film of a material selected from a group consisting of cellulose triacetate and cellulose acetate butyrate bonded to each of opposing surfaces of said polarizing film, said polarizing sheet 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; a plastic film having a thickness in a range of from 0.1 mm to 0.5 mm bonded to one of opposing surfaces of a polarizing sheet with an adhesive to thereby form a laminate; and a layer of lens-forming resin fused with said plastic film; wherein said plastic film is formed to form a concave surface of said laminate.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2000-404559 |
Dec 2000 |
JP |
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Parent Case Info
This application is a Continuation-In-Part application of patent application Ser. No. 09/957,723, filed on Sep. 21, 2001, now U.S. Pat. No. 6,650,473.
US Referenced Citations (11)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2001353747 |
Dec 2001 |
JP |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
09/957723 |
Sep 2001 |
US |
Child |
10/396029 |
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US |