Lens, manufacturing method thereof, and optical device using the same lens
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorHiroyuki Asakura
Life of this patent
Estimating the term…
Abstract
An optical lens, has a marking entirely or partially outside an effective area of the lens to distinguish between surfaces of the lens.
Claims42
An optical lens, comprising a marking entirely or partially outside an effective area of said lens to distinguish between surfaces of said lens.
An optical lens, comprising a coating film on one of two surfaces of said lens.
A manufacturing method of an optical lens, comprising a step of entirely or partially forming a marking outside an effective area of said lens to distinguish between surfaces of said lens.
A manufacturing method of an optical lens, comprising a step of forming a coating film on one of two surfaces.
A lens, comprising a configuration permitting visual discrimination between an inner region and an outer region of effective area of said lens.
A lens manufacturing method, comprising a step of working a surface outside an effective area of a lens so as to permit visual discrimination from a surface inside the effective area.
A lens manufacturing method, comprising a step of simultaneously forming a lens and a predetermined pattern by using a mold, which is capable of forming said predetermined pattern on a surface outside an effective area of said lens so as to permit visual discrimination from a surface inside the effective area.
A lens manufacturing device, comprising means of working a surface outside an effective area of a lens so as to permit visual discrimination from a surface inside said effective area.
A lens manufacturing device, comprising means of simultaneously forming a lens and a predetermined pattern by using a mold, which is capable of forming said predetermined pattern on a surface outside an effective area of said lens so as to permit visual discrimination from a surface inside the effective area.
Dependencies are inferred from the claim text.