Patent ID: 8721932

Claim:
A method for manufacturing an anti-fog gauge lens having a substantially planar transparent lens substrate having an outer surface and an inner surface, and a film having a first surface and a second surface, in an injection mold comprising a gate, a core side for molding said inner surface of said lens, and a cavity side for molding said outer surface of said lens; said method comprising: cutting said film to substantially fit the shape of said inner surface of said lens; positioning said second surface of said film on said core side of said mold; preparing said mold for accepting a resin material comprising said lens substrate; pre-heating the mold to a molding temperature prior to the molding process and heating the mold in which the film is positioned to maintain the molding temperature during a molding process, wherein the molding temperature vaporizes impurities in one or more of the mold, the film, and the resin material; injecting said resin material into said mold; forming an intermolded bond between the film and the inner surface of the substantially planar transparent lens during the molding process; cooling said mold; and removing said anti-fog gauge lens from said mold.