Patent ID: 6876403

Claim:
A polarized light color filter having an incident light side and an emitted light side and comprising, in order and at an angle to the incident light optical path, a first polarized light converting element provided adjacent the incident light side for selectively emitting polarized incident light thereon after either changing the polarity of the polarized incident light or leaving the polarity of the incident light unchanged according to a voltage applied to the first polarized light converting element, a first polarization spectroscopic element comprising a first narrow band polarization spectroscopic element for reflecting only the S-polarized light component out of a first primary light corresponding to a first primary color, a second polarized light converting element for selectively emitting polarized incident light thereon after either changing the polarity of the polarized incident light or leaving the polarity of the incident light unchanged according to a voltage applied to the second polarized light converting element, a second polarization spectroscopic element comprising a second narrow band polarization spectroscopic element for reflecting only the S-polarized light component out of a second primary light corresponding to a second primary color, a third polarized light converting element for selectively emitting polarized incident light thereon after either changing the polarity of the polarized incident light or leaving the polarity of the incident light changed according to a voltage applied to the third polarized light converting element, a third polarization spectropscopic element comprising a third narrow band polarization spectroscopic element for reflecting only the S-polarized light component out of a third primary light corresponding to a third primary color and control means for applying a voltage on a time-divisional basis to the first, second and third polarized light converting elements.