| US 7,527,390 B2 | ||
| Light source device | ||
| Yoshinori Kakuta, Tokyo (Japan) | ||
| Assigned to Mitsubishi Electric Corporation, Tokyo (Japan) | ||
| Filed on Jan. 03, 2007, as Appl. No. 11/648,822. | ||
| Claims priority of application No. 2006-141616 (JP), filed on May 22, 2006. | ||
| Prior Publication US 2007/0268704 A1, Nov. 22, 2007 | ||
| Int. Cl. F21V 7/00 (2006.01) | ||
| U.S. Cl. 362—247 [362/231; 362/296; 362/347; 362/800] | 6 Claims |
| 1. A light source device comprising:
a first spheroidal mirror having first and second focal points; and
a light source unit having a plurality of semiconductor light emitting elements radially disposed on a support with respect
to the axis of rotation of the first spheroidal mirror, light beams from the semiconductor light emitting elements passing
through the second focal point, reflecting from the inner surface of the first spheroidal mirror, and being focused to the
first focal point, the axis of rotation and the light emission central axis of each of the semiconductor light emitting elements
forming an angle of 90 degrees or greater,
wherein the light source unit is removably attached to an opening provided at a non-reflective portion of the first spheroidal
mirror so as to form an illumination unit.
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