4. Optics: image projectors
  5. Distortion compensation
  6. For projection axis inclined to screen

Peter R. Oehler

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Contrast and brightness enhancing apertures for illumination...

Optics: image projectors – Light shield – mask – hood – or diaphragm
Reexamination Certificate

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Keystone distortion correction system for use in multimedia...

Optics: image projectors – Distortion compensation – For projection axis inclined to screen
Reexamination Certificate

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Polarized, LED-based illumination source

Optics: image projectors – Polarizer or interference filter
Reexamination Certificate

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Polarized, led-based illumination source

Optics: image projectors – Polarizer or interference filter
Reexamination Certificate

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Polarized, LED-based illumination source

Optics: image projectors – Polarizer or interference filter
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2509251

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