Rear projection type display apparatus

Details Rear projection type display apparatus Rear projection type display apparatus

2011-03-22

2011-03-22

Pyo, Kevin (Department: 2878)

Optics: image projectors

Cabinet encloses projector and one side of screen

Reflector between lamp and screen

C353S078000, C359S457000, C359S460000

Reexamination Certificate

active

07909471

ABSTRACT:
A rear projection type display apparatus, comprises an output unit that modulates a light from a light source to output a projection light; an image formation unit that has one or more optical elements, and that subjects the projection light that is output from the output unit to form an image; a Fresnel screen that displays the projection light that is subjected to form an image; a light detection unit that is disposed at a position on which a reflected light from the Fresnel screen focuses, and that detects rays; and a control unit that controls an output of the projection light by the output unit based on the rays that are detected at the light detection unit.

REFERENCES:
patent: 2007/0247594 (2007-10-01), Tanaka
patent: 2005-173424 (2005-06-01), None

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