Light source device, image display device, projector,...

Details Light source device, image display device, projector,... Light source device, image display device, projector,...

2007-11-30

2009-10-27

Nguyen, Dung T (Department: 2828)

Coherent light generators

Particular resonant cavity

Specified cavity component

C372S026000, C372S050110

Reexamination Certificate

active

07609746

ABSTRACT:
A light source device generates irradiation light that is irradiated onto a predetermined face, the light source device including: a laser light source that emits laser light; a diffractive optical element that diffracts the laser light; a diffusion optical element that has an incidence face into which the laser light is incident and a light emission face from which the laser light from the incidence face is emitted, and that diffuses the laser light; and unit structures that are two-dimensionally arrayed on at least one of the incidence face and the light emission face of the diffusion optical element, and that cause the light which is perpendicularly incident into the diffusion optical element to refract at one time, and then emit this light toward the predetermined face.

REFERENCES:
patent: 6038043 (2000-03-01), Bahuguna et al.
patent: 6868099 (2005-03-01), Walker et al.
patent: A-11-064789 (1999-03-01), None
patent: A-2000-162548 (2000-06-01), None

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