Projector and pattern image display method

Details Projector and pattern image display method Projector and pattern image display method

2005-03-17

2009-02-03

Lee, Diane I (Department: 2851)

Optics: image projectors

Lens support

Lens position adjustable

C353S069000, C348S745000, C356S004030, C356S004040, C356S004050, C356S622000

Reexamination Certificate

active

07484854

ABSTRACT:
An appropriate adjustment can be made on the basis of a gradation amplitude obtained from a photographing image even when the zoom position of a zoom lens is changed. According to exemplary embodiments a CPU obtains a zoom amount transmitted from a zoom lens position detecting section, and derives the width of a stripe element in a pattern image to be formed on a liquid crystal light valve on the basis of the obtained zoom amount by referring to a stripe element width table stored to a stripe element width table storing section. The CPU corrects the pattern image for an adjustment on the basis of the derived stripe element width and rewrites the contents of a pattern image memory and gives instructions of image projection to an image processing section, a liquid crystal light valve driving section, etc. Thus, the pattern image corrected with respect to the stripe element width is formed on the liquid crystal light valve.

REFERENCES:
patent: 5828503 (1998-10-01), Kaneda et al.
patent: 6485147 (2002-11-01), Liang
patent: 6592228 (2003-07-01), Kawashima et al.
patent: 7236256 (2007-06-01), Yamaguchi
patent: 2003/0174293 (2003-09-01), Hubel et al.
patent: 2005/0024606 (2005-02-01), Li et al.
patent: 2005/0157270 (2005-07-01), Muraoka et al.
patent: A 2000-241874 (2000-09-01), None
patent: A-2002-247614 (2002-08-01), None

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