Projector

Details Projector Projector

2007-10-12

2010-10-26

Epps, Georgia Y (Department: 2878)

Optics: image projectors

Lamp control

C353S037000, C353S098000, C353S119000, C353S122000, C315S2090SC, C315S224000, C315S225000, C315S226000, C315S291000, C315S294000, C315S307000, C315S308000, C313S113000, C313S114000, C313S115000, C313S458000, C313S460000

Reexamination Certificate

active

07819531

ABSTRACT:
A light source device includes first and second electrodes, an arc tube having a main body section having a discharge space in which the first and second electrodes are disposed with a distance and a sealing section disposed on each of the both ends of the main body section, a primary reflecting mirror disposed on the side of the first electrode, a secondary reflecting mirror disposed on the side of the second electrode, and a current drive device that generates an alternating current for causing the discharge between the first and second electrodes, and power control by controlling the alternating current so that supplying energy in an anodic term of the first electrode becomes smaller than supplying energy in a cathode term.

REFERENCES:
patent: 6175199 (2001-01-01), Moskowitz
patent: 6781326 (2004-08-01), Stack
patent: 7288899 (2007-10-01), Akiyama
patent: 2003/0098659 (2003-05-01), Okamoto et al.
patent: 2006/0066261 (2006-03-01), Rahmane et al.
patent: 2008/0246410 (2008-10-01), Kikuchi
patent: A-6-163167 (1994-06-01), None
patent: A-2005-19141 (2005-01-01), None
patent: A-2006-4919 (2006-01-01), None
patent: WO 2004/086453 (2004-10-01), None
patent: WO 2005/074332 (2005-08-01), None

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