Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2007-06-20
2009-12-15
Sugarman, Scott J (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
C359S256000, C359S259000, C349S018000
Reexamination Certificate
active
07633666
ABSTRACT:
A projection design configured for use with a projector having a projector lens is provided. The device includes at least one pi-cell or pi-cell electro-optical modulator in combination with a wire grid polarizer mounted proximate the pi-cell(s). The design may include a cleanup polarizer between the pi-cell(s) and the wire grid polarizer and optionally a protective window between the wire grid projector and projection lens. The device may be oriented at an angle substantially differing from the axis of the projector lens. The resultant device includes spacing for airflow and can offer improved performance, particularly in heating, over designs previously available.
REFERENCES:
patent: 4792850 (1988-12-01), Lipton et al.
patent: 6636276 (2003-10-01), Rosenbluth
patent: 6721096 (2004-04-01), Bruzzone et al.
patent: 2006/0092380 (2006-05-01), Salsman et al.
patent: 2007/0070260 (2007-03-01), Wang
patent: 2008/0143965 (2008-06-01), Cowan et al.
Notification of Transmittal of International Search Report and Written Opinion for PCT/US2008/007603 mailed Sep. 30, 2008.
Cowan Matt
Lipton Lenny
Baker & McKenzie LLP
Pinkney Dawayne A
Real D
Sugarman Scott J
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