Optics: image projectors – Polarizer or interference filter
Reexamination Certificate
2008-01-22
2008-01-22
Koval, Melissa Jan (Department: 2862)
Optics: image projectors
Polarizer or interference filter
C353S033000, C353S034000, C353S037000, C353S081000, C353S098000, C359S490020, C348S750000, C348S758000
Reexamination Certificate
active
07320521
ABSTRACT:
An optical engine architecture that operates as either a two-imager or a three-imager optical engine. The optical engine uses a first PBS cube and a second PBS cube having an optical axis between them. In between the first PBS cube and second PBS cube are two quarter wave plates and a dichroic mirror, where the dichroic mirror is disposed between the two quarter wave plates. In the three imager embodiment, a retarder is disposed between the second PBS cube and the quarter wave plate closest to the second PBS cube. In the two imager embodiment, this retarder is not necessary.
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International Search Report; Jul. 7, 2003.
Koval Melissa Jan
Next Wave Optics, Inc.
Orrick Herrington & Sutcliffe LLP
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