Gauge lens with embedded anti-fog film and method of making the same

Abstract

The gauge lens with anti-fog film includes a substantially planar transparent lens substrate having an outer surface and an inner surface and a thin film possessing anti-fog properties adjacent and substantially covering the inner surface of the lens substrate to provide a low angle of contact for water and moisture. The anti-fog film is bonded to the lens substrate during the molding process that produces the lens substrate shape. The anti-fog film comprises a hydrophilic material or is coated with a hydrophilic coating. In addition to the anti-fog film, in another embodiment, the outer surface of the lens substrate has a hard coat film adjacent and substantially covering the outer surface of said lens. The materials for the lens substrate, anti-fog film, and hard coat film are selected based on the application, performance, and stability of the gauge lens in the environment that it is operated.

Dependencies are inferred from the claim text.