Projector and optical device

Details Projector and optical device Projector and optical device

2006-06-13

2006-06-13

Mahoney, Christopher (Department: 2851)

Optics: image projectors

Lamp control

C353S099000

Reexamination Certificate

active

07059727

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 source101for emitting light; a spatial light modulator104for modulating the light from the light source101in accordance with an image signal; and a projector lens106for projecting the light modulated by the spatial light modulator104. The spatial light modulator104is a tilt mirror device including a movable mirror element that reflects the light from the light source101in the direction of the projector lens106or in the direction other than that of the projector lens106. The invention further includes: a light-intensity measuring section110provided in an imaging position of the light source101or in the vicinity of the imaging position for measuring the light intensity of the light reflected in the direction other than that of the projector lens106; and a light-source controller114for controlling the light source101in accordance with the signal from the light-intensity measuring section110.

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