Projector with reduced speckle contrast

Details Projector with reduced speckle contrast Projector with reduced speckle contrast

2009-04-03

2011-11-01

Epps, Georgia Y (Department: 2878)

Optics: image projectors

Composite projected image

Multicolor picture

C353S034000, C353S084000, C353S098000

Reexamination Certificate

active

08047654

ABSTRACT:
A projector includes a light source module, a diffuser for diffusing the light beam emitting from the light source module, and a fluorescent plate. The light source module includes a light source capable of emitting a first light beam, a dichroic device for diverging the first light beam into a second light beam and a third light beam, and a reflector with a moving frequency exceeding 20 Hz configured for reflecting the third light beam. The fluorescent plate is configured for converting the light beam passing through the diffuser into at least three kinds colored light beams.

REFERENCES:
patent: 5822021 (1998-10-01), Johnson et al.
patent: 2004341105 (2004-12-01), None

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