Optical image projector and light source device for optical...

Details Optical image projector and light source device for optical... Optical image projector and light source device for optical...

2007-03-13

2007-03-13

Cariaso, Alan (Department: 2875)

Illumination

Light source and modifier

Including selected wavelength modifier

C362S298000, C362S300000

Reexamination Certificate

active

11063849

ABSTRACT:
A light source device includes: a light-emitting tube having a light-emitting portion that generates a light beam by an electric discharge between electrodes and a sealing portion provided on both sides of the light-emitting portion; an ellipsoidal reflector having a substantially ellipsoidal reflecting surface and irradiating the light beam irradiated by the light-emitting tube after converging at a predetermined position; a sub-reflection mirror having a reflecting surface opposed to the reflecting surface of the ellipsoidal reflector and covering the front side of the light-emitting tube in the light-irradiation direction to reflect the light beam emitted by the light-emitting tube toward the ellipsoidal reflector; and a transparent member provided in front of the ellipsoidal reflector in the light-irradiation direction to transmit the light beam. The light source device further includes a holder provided at a front end of the ellipsoidal reflector in the light-irradiation direction to hold an outer periphery of the parallelizing lens, the holder having a double structure with an absorber for absorbing light provided on an inner side thereof.

REFERENCES:
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patent: 5491525 (1996-02-01), Yamasaki et al.
patent: 6210024 (2001-04-01), Shida
patent: 6402346 (2002-06-01), Liao et al.
patent: 6527417 (2003-03-01), Basey
patent: 6575599 (2003-06-01), Imamura et al.
patent: 2004/0145896 (2004-07-01), Watanabe et al.
patent: A 2000-347293 (2000-12-01), None

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