Title:
PHOTODETECTOR
Document Type and Number:
Japanese Patent JP3657701
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a photodetector with which a photodetecting means can be surely cooled in a vacuum.
SOLUTION: This device 1 is constituted by arranging a cooling element 2 and a photodetecting element 3 inside a sealed housing 11. The photodetecting element 3 is attached to the cold side 21 side of the cooling element 2, and a hot side 22 of that cooling element 3 is pressed to a radiator 4 inside the housing 11 with metallic foil 5 inbetween. Therefore, since from the structure for attaching the cooling element 2 no gas is released, the surrounding space of the photodetecting element 3 can be surely kept in a vacuum state. Besides, heat generated from the cooling element 3 is efficiently conducted through the metallic foil 5 to the radiator. Further, even when the surface of the cooling element 3 or the radiator 4 is warped, the soft metallic foil 5 is tightly adhered between these cooling element 2 and radiator 4 and no gap generates so that heat conductivity can be prevented from being deteriorated. Therefore, satisfactory cooling characteristics can be provided.
Inventors:
Okura Final
Application Number:
JP19353696A
Publication Date:
June 08, 2005
Filing Date:
July 23, 1996
Export Citation:
Assignee:
Hamamatsu Photonics Co., Ltd.
International Classes:
H01L27/14; H01L23/38; H01L31/00; H01L31/02; (IPC1-7): H01L27/14; H01L23/38; H01L31/02
Domestic Patent References:
| JP5256693A | ||||
| JP7038019A | ||||
| JP56133634A | ||||
| JP5240702A | ||||
| JP1159380U | ||||
| JP817980A |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Tatsuya Shioda
Shiro Terasaki
Kazuo Yoshii
Tatsuya Shioda
Shiro Terasaki
Kazuo Yoshii
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