Light guiding member, illumination apparatus, and projector

Details Light guiding member, illumination apparatus, and projector Light guiding member, illumination apparatus, and projector

2007-03-27

2007-03-27

Tso, Laura K. (Department: 2875)

Illumination

Light fiber, rod, or pipe

C362S558000, C362S560000, C362S561000

Reexamination Certificate

active

11176619

ABSTRACT:
A light guiding member guides diffusion light using as a central axis a substantial center of the diffusion light emitted from a light source, and comprises a tapered rod and a pipe. The tapered rod comprises an incident end face, an emissive end face having an area larger than that of the incident end face, and a total reflection face which guides at least the diffusion light striking on the incident end face to the emissive end face by inner face reflection. The pipe is disposed in a position which is farther than a distance from the central axis to the total reflection face and comprises a reflection face or a reflection layer which coats the tapered rod.

REFERENCES:
patent: 4344110 (1982-08-01), Ruediger
patent: 5696865 (1997-12-01), Beeson et al.
patent: 6007225 (1999-12-01), Ramer et al.
patent: 11-352589 (1999-12-01), None
patent: 2000-231344 (2000-08-01), None

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