Optics: image projectors – Distortion compensation
Reexamination Certificate
2008-11-26
2011-12-06
Dowling, William C (Department: 2878)
Optics: image projectors
Distortion compensation
C353S020000, C353S031000, C353S033000, C353S052000, C353S085000, C353S070000, C353S101000, C353S119000, C353S122000, C362S257000, C362S259000
Reexamination Certificate
active
08070297
ABSTRACT:
A projector that projects video light corresponding to an image signal onto a display surface includes: a light source device that emits light; a housing that houses at least the light source device; a projection lens, that is, an optical element that transmits the video light projected onto the display surface and emits the video light toward the outside of the housing; a detecting unit that detects detection light supplied to the optical element; and a control unit that adjusts a light amount of the video light on the basis of a result of the detection by the detecting unit. The projector is set such that, when the optical element is in a normal setting state, the light amount density of the video light is equal to or lower than a predetermined value on an emission surface for emitting the video light of the optical element.
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Chowdhury Sultan
Dowling William C
Oliff & Berridg,e PLC
Seiko Epson Corporation
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