Gentex Corporation
ILLUMINATION SYSTEMS AND METHOD OF USE

Abstract:

An illumination system and method of use that includes a light source, a first linear polarizer, a first converter configured to convert at least a portion of the light transmitted through the first linear polarizer to light having a first handedness of circular polarization, and a second converter configured to convert light having a second handedness of circular polarization to light having a second linear polarization. A second linear polarizer is positioned to receive the light of the second linear polarization from the second converter. At least one of the first linear polarizer and the second linear polarizer are selectively switchable between (i) a first condition in which light having the first linear polarization and light having the second linear polarization is transmitted and (ii) a second condition in which light of the first linear polarization is absorbed and light of the second linear polarization is transmitted.