Projection-type display apparatus

Details Projection-type display apparatus Projection-type display apparatus

2007-10-16

2007-10-16

Sever, Andrew T (Department: 2851)

Optics: image projectors

Cabinet encloses projector and one side of screen

Reflector between lamp and screen

C353S098000, C348S794000, C359S460000

Reexamination Certificate

active

10886116

ABSTRACT:
A thin-shaped projection-type display apparatus capable of displaying a high-quality image without causing any ghost image is provided. The projection-type display apparatus includes a screen having a prism, and a projection optical system for guiding image light to the screen. The projection optical system includes a plurality of optical elements. An optical element disposed nearest to the screen on an optical path of the image light among the plurality of optical elements is a mirror. An angle made by the normal to a surface of the mirror approximately at the center of the mirror and the normal to a surface of the screen is between 75 degrees and 87.5 degrees inclusive.

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