US Patent:
20020159026, Oct 31, 2002
Inventors:
Edward Bernheim - Corpus Christi TX, US
International Classification:
G02C007/10
Abstract:
Optical media have predetermined regions of the spectrum where transmission is selectively reduced. Preferably, ultraviolet light is substantially prevented from passing through the media. A blue blocker is incorporated into the media, or as a coating on the media, for reducing transmission in the range of 400-540 nanometers. A red blocker is incorporated into the media, or as a coating on the media, for reducing transmission in the range of 625-760 nanometers. An infrared blocker is incorporated into the media, or as a coating on the media, for reducing transmission in the range of 760-1100 nanometers.