Illumination apparatus and projection display apparatus

Details Illumination apparatus and projection display apparatus Illumination apparatus and projection display apparatus

2011-01-04

2011-01-04

Le, Que T (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S239000, C353S094000

Reexamination Certificate

active

07863555

ABSTRACT:
An illumination apparatus includes; a first solid-state light source, a second solid-state light source, a first arrangement member provided with a first arrangement surface, a second arrangement member provided with a second arrangement surface, an optical unit configured to reduce a dispersion angle of a light beam. The first solid-state light source emits a light beam having a first directivity. The second solid-state light source emits a light beam having a second directivity greater than the first directivity. A distance from the second arrangement surface to the second light-entering surface is longer than a distance from the first arrangement surface to the first light-entering surface.

REFERENCES:
patent: 7303288 (2007-12-01), Miyazawa et al.
patent: 10-200166 (1998-07-01), None
patent: 2000-112031 (2000-04-01), None
patent: 2001-196637 (2001-07-01), None
patent: 2004-341108 (2004-12-01), None

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