| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical device which prevents a temperature rise inside the optical device. <P>SOLUTION: An optical device includes, at least in a part thereof, hollow particles-containing rubber members (24, 26, 51, 71) which are provided outside light passage areas (3, 30) through which light can pass and include a rubber material (52) and hollow particles (53) dispersed in the rubber material and having cavities (54) formed therein. <P>COPYRIGHT: (C)2012,JPO&INPIT |
