| US 7,549,771 B2 | ||
| Light source device and projector | ||
| Kentaro Yamauchi, Matsumoto (Japan); and Toshiaki Hashizume, Okaya (Japan) | ||
| Assigned to Seiko Epson Corporation, Tokyo (Japan) | ||
| Filed on Feb. 14, 2007, as Appl. No. 11/705,761. | ||
| Claims priority of application No. 2006-038621 (JP), filed on Feb. 15, 2006. | ||
| Prior Publication US 2007/0189016 A1, Aug. 16, 2007 | ||
| Int. Cl. H01J 61/35 (2006.01) | ||
| U.S. Cl. 362—264 [362/263; 362/296; 362/261] | 10 Claims |
| 1. A light source device, comprising:
a light source lamp having a light-emitting tube with a discharge space and a pair of electrodes disposed in the discharge
space of the light-emitting tube;
a reflector extending in a substantially concave shape in section, the reflector reflecting a light beam irradiated from the
light source lamp; and
a sub-reflection mirror having a reflection surface that is disposed to face a reflection surface of the reflector, the sub-reflection
mirror reflecting a part of the light beam irradiated from the light source lamp toward the discharge space, wherein
the light-emitting tube has a light-emitting section having the discharge space therein and sealing sections provided on both
sides of the light-emitting section,
the sub-reflection mirror is formed in a shape of a bowl that covers the light-emitting section of the light-emitting tube,
the sub-reflection mirror having an opening for mounting the sub-reflection mirror to the light-emitting tube by allowing
one of the sealing sections of the light-emitting tube to be inserted thereinto, and
a heat insulating member is provided to at least a part of the light-emitting section and the other one of the sealing sections
of the light-emitting tube.
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