Light-emitting diode light source system

Details Light-emitting diode light source system Light-emitting diode light source system

2007-03-12

2009-08-18

Payne, Sharon E (Department: 2875)

Illumination

Plural light sources

Particular wavelength

C362S237000, C362S244000, C362S293000, C362S339000, C362S800000

Reexamination Certificate

active

07575340

ABSTRACT:
A light-emitting diode light source system includes a plurality of light-emitting diode modules for providing light beams; a light-combining unit including a plurality of light incident sides and a light emerging side, the light beams from the light-emitting diode modules entering the light-combining unit via the light incident sides, respectively, and emerging out of the light-combining unit via the light emerging side; a plurality of primary lens units disposed between the light-emitting diode modules and the light incident sides, respectively; a secondary lens unit disposed to confront the light emerging side; and a focusing lens disposed adjacent to the secondary lens unit, the secondary lens unit being disposed between the light-combining unit and the focusing lens, the light beams from the light-emitting diode modules passing through the primary lens units, the light-combining unit, the secondary lens unit and the focusing lens to be projected onto a light valve.

REFERENCES:
patent: 6547421 (2003-04-01), Sugano
patent: 6769772 (2004-08-01), Roddy et al.
patent: 7325956 (2008-02-01), Morejon et al.
patent: 2003/0133080 (2003-07-01), Ogawa et al.
patent: 2005/0162849 (2005-07-01), Keuper
patent: 200402594 (1992-10-01), None
patent: 200426491 (1993-05-01), None

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