Patent ID: 6807006
Filing Date: 2004-10-19
Classification: B29C,B29D,B29L,Y10S

Abstract:
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.