Optics: image projectors – Lamp control
Reexamination Certificate
2006-04-19
2009-06-30
Mahoney, Christopher (Department: 2862)
Optics: image projectors
Lamp control
C353S099000
Reexamination Certificate
active
07553033
ABSTRACT:
To provide a projector or the like, which use a solid-state light-emitting element as light source and which provides a bright, stable, and uniform projection image, the present invention includes: a light source to emit light; a spatial light modulator to modulate the light from the light source in accordance with an image signal; and a projector lens to project the light modulated by the spatial light modulator. The spatial light modulator is a tilt mirror device including a movable mirror element that reflects the light from the light source in the direction of the projector lens or in the direction other than that of the projector lens. The invention may further include a light-intensity measuring section provided in an imaging position of the light source or in the vicinity of the imaging position to measure the light intensity of the light reflected in the direction other than that of the projector lens; and a light-source controller to control the light source in accordance with the signal from the light-intensity measuring section.
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Mahoney Christopher
Oliff & Berridg,e PLC
Seiko Epson Corporation
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