Projection apparatus with light source to output light into...

Details Projection apparatus with light source to output light into... Projection apparatus with light source to output light into...

2006-06-13

2006-06-13

Perkey, W. B. (Department: 2851)

Optics: image projectors

Prism in light path

C353S028000, C353S020000, C348S798000, C348S801000, C349S062000

Reexamination Certificate

active

07059726

ABSTRACT:
A projection apparatus that includes a light source optically coupled to an integrating tunnel to output light into the integrating tunnel through a first and a second medium from a direction nonparallel to the output direction of the integrating tunnel. The first and second mediums having different indices of refraction to facilitate reflection of the output light from the light source off a reflective surface of the integrating tunnel and propagating the reflected light substantially towards an output end of the integrating tunnel.

REFERENCES:
patent: 6688747 (2004-02-01), Wichner et al.
patent: 2002/0186350 (2002-12-01), Peterson
patent: 2003/0090632 (2003-05-01), Kim et al.
patent: 2003/0197834 (2003-10-01), Kang
patent: 2004/0174501 (2004-09-01), Slobodin et al.
patent: 2005/0018149 (2005-01-01), Takeda et al.
patent: 2005/0088624 (2005-04-01), Lee et al.

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