| US 7,585,077 B2 | ||
| Optical apparatus and projector | ||
| Makoto Zakoji, Shiojiri (Japan); Satoshi Kinoshita, Matsumoto (Japan); Motoyuki Fujimori, Suwa (Japan); and Yoshiyuki Yanagisawa, Matsumoto (Japan) | ||
| Assigned to Seiko Epson Corporation, Tokyo (Japan) | ||
| Filed on Jan. 23, 2006, as Appl. No. 11/336,987. | ||
| Claims priority of application No. 2005-055628 (JP), filed on Mar. 01, 2005. | ||
| Prior Publication US 2007/0051057 A1, Mar. 08, 2007 | ||
| Int. Cl. G03B 21/26 (2006.01); G03B 21/22 (2006.01); G03B 9/08 (2006.01); H04N 5/74 (2006.01); G02F 1/1333 (2006.01) | ||
| U.S. Cl. 353—54 [353/119; 352/202; 348/748; 349/161] | 13 Claims |
| 1. A projector comprising:
a light source unit;
an optical apparatus including,
an optical device,
a holding frame for holding a periphery of the optical device, and
a cooling tube, which is provided in the holding frame along the periphery of the optical device and in which a cooling fluid
flows, wherein
the holding frame has a structure that a pair of frame members is oppositely provided so as to sandwich the cooling tube therebetween,
a groove for housing the cooling tube is formed on each opposing surface of the pair of frame members, and
the cooling tube is provided on a first member of the pair of frame members while a second frame member is formed by molding
around the cooling tube from a material having a melting point lower than that of the cooling tube;
a cooling unit for circulating the cooling fluid in the optical apparatus; and
a projection optical apparatus for enlarging and projecting an optical image formed by means of the optical apparatus.
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