Projector

Details Projector Projector

2011-07-19

2011-07-19

Dowling, William C (Department: 2878)

Optics: image projectors

Distortion compensation

For projection axis inclined to screen

C356S139030, C356S139100, C356S154000

Reexamination Certificate

active

07980703

ABSTRACT:
A projector is provided which includes a distance measuring unit which can accurately measure distances to a plurality of points on a surface of a screen using light rays. The projector of the invention has the distance measuring unit for measuring distances to the plurality of points on the surface of the screen, which includes a plurality of light ray units for irradiating light rays onto the screen and one light receiving element for receiving the light rays which are reflected on the surface of the screen, and a tilt angle calculation unit for calculating a tilt angle of the screen relative to the projector based on the distances to the plurality of points on the surface of the screen which are measured by the distance measuring unit.

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Japanese Office Action dated Jan. 8, 2009 (2 pages), and English translation thereof (3 pages) issued in counterpart Japanese Application No. 2008-009834.
Japanese Office Action dated Jun. 18, 2009 (2 pages), and English translation thereof (2 pages), issued in counterpart Japanese Application Serial No. 2008-009834.

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