Optics: image projectors – Polarizer or interference filter
Reexamination Certificate
2006-10-18
2010-12-28
Epps, Georgia Y (Department: 2878)
Optics: image projectors
Polarizer or interference filter
C353S007000, C353S008000, C353S098000, C353S099000, C353S031000, C349S005000, C349S007000, C349S015000, C349S018000, C349S097000, C349S106000, C349S115000, C349S117000, C348S042000, C348S057000, C348S058000, C348S059000, C348S060000, C359S462000, C359S465000, C359S016000, C359S016000, C359S016000, C359S463000, C359S490020, C359S490020, C359S490020, C352S060000
Reexamination Certificate
active
07857455
ABSTRACT:
A multiple path stereoscopic projection system is disclosed. The system comprises a polarizing splitting element configured to receive image light energy and split the image light energy received into a primary path and a secondary path, a reflector in the secondary path, and a polarization modulator or polarization modulator arrangement positioned in the primary path and configured to modulate the primary path of light energy. A polarization modulator may be included within the secondary path, a retarder may be used, and optional devices that may be successfully employed in the system include elements to substantially optically superimpose light energy transmission between paths and cleanup polarizers. The projection system can enhance the brightness of stereoscopic images perceived by a viewer. Static polarizer dual projection implementations free of polarization modulators are also provided.
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Carollo Jerry
Cowan Matt
Lipton Lenny
Baker & McKenzie LLP
Chowdhury Sultan
Epps Georgia Y
RealD Inc.
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