Patent ID: 8480234

Claim:
A 3D display system, comprising: a projector system comprising a first channel projection system and a second channel projection system; the first channel projection system comprising optics forming a first channel light path and a first channel modulation device configured to modulate a first channel spectrum of different color lights delivered to the modulator via the first channel light path; the second channel projection system comprising optics forming a second channel light path and a second channel modulation device configured to modulate a second channel spectrum of different color lights delivered to the modulator via the second channel light path; a first channel spectrum separator configured to separate spectrum outside the first channel spectrum of different color lights and prevent the separated spectrum outside the first channel spectrum from entering the first channel light path; a second channel spectrum separator configured to separate spectrum outside the second channel spectrum of different color lights and prevent the separated spectrum outside the second channel spectrum from entering the second channel light path; and recycling optics configured to re-direct spectrum by the first channel spectrum separator toward the second channel spectrum separator and visa versa; viewing glasses comprising a first channel viewing filter comprising passbands corresponding to the first channel spectrum and blocking bands corresponding to the second channel spectrum and a second channel viewing filter comprising passbands corresponding to the first channel spectrum and blocking bands corresponding to the second channel spectrum; wherein an endpoint of a passbands of one of the first and second viewing filters is shifted relative to the spectrum of its corresponding channel.