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US 2004/0057128 A1Published application
Optical device
AssigneeFujitsu Limited
InventorsYujin Yamazaki, Yuichi Kawahata, Nobuaki Mitamura, Hirohiko Sonoda
Life of this patent
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Abstract
A cabinet provided with light input/output holes accommodates a VIPA optical element, a lens, a fixing material fixing the VIPA optical element. A temperature-controlled heater controls the temperature of and inside the cabinet. Both the light input and output holes of the cabinet are blocked by the fixing material and the lens, respectively, so that temperature inside the cabinet is not influenced by the outside air.
Claims10
An optical device, comprising:
- an optical element;
- a fixing means for fixing the optical element;
- a lens focusing a plurality of segments of light transmitted from the optical element;
- a cabinet provided with light input/output holes, that accommodates the optical element, the fixing means and the lens;
- a heater heating the cabinet;
- a first blocking means made of a light transmitting material, for blocking the first light input/output hole;
- and
- a second blocking means made of a light transmitting material, for blocking the second light input/output hole.
5 more elements
Dependencies are inferred from the claim text.