Patent ID: 7660051

Claim:
An optical lens base including a convex-side surface having a predetermined curved shape, to which a protective film of a generally flat shape for said optical lens base is strippably adhered, characterized in that said protective film comprises a film layer with an outer diameter smaller than that of said optical lens base, and an adhesive layer applied over an entire surface of one side of the film layer with an adhesive strength that allows stripping of said protective film from said optical lens base, a central portion of said protective film being adhered to a center of said convex-side surface of said optical lens base to thereby naturally form wrinkles in a peripheral portion of said protective film so that said peripheral portion of said protective film is spaced apart from said convex-side surface of said optical lens base by said wrinkles, and a peripheral portion of said protective film is spaced apart from said convex-side surface of said optical lens base to form a gap.