Projection apparatus and distance measurement method wherein...

Details Projection apparatus and distance measurement method wherein... Projection apparatus and distance measurement method wherein...

2011-06-14

2011-06-14

Le, Que T (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S205000

Reexamination Certificate

active

07960677

ABSTRACT:
A projection apparatus including a projection drive control unit modulating an emitted light from a light source unit for each of a plurality of color components at predetermined time, and a projection distance acquisition unit irradiating light to the projection screen to acquire a distance to the projection screen, wherein the projection distance acquisition unit carries out laser distance measurement during a period the projection drive control unit modulates a color component of the emitted light to color components except one color component of a plurality of modulated color components.

REFERENCES:
patent: 5552893 (1996-09-01), Akasu
patent: 6670603 (2003-12-01), Shimada et al.
patent: 7131732 (2006-11-01), Inoue
patent: 7180510 (2007-02-01), Inoue et al.
patent: 7766486 (2010-08-01), Sakai
patent: 7-84045 (1995-03-01), None
patent: 2003-029201 (2003-01-01), None
patent: 2004-110797 (2004-04-01), None
patent: 2005-39558 (2005-02-01), None
patent: 2008-020196 (2008-01-01), None
Japanese Office Action dated Feb. 23, 2010 and English translation thereof issued in counterpart Japanese Application No. 2008-038147.

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