发明授权
US4820923A Uncooled reflective shield for cryogenically-cooled radiation detectors
失效
用于低温冷却辐射探测器的未冷却反射罩
- 专利标题: Uncooled reflective shield for cryogenically-cooled radiation detectors
- 专利标题(中): 用于低温冷却辐射探测器的未冷却反射罩
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申请号: US876024申请日: 1986-06-19
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公开(公告)号: US4820923A公开(公告)日: 1989-04-11
- 发明人: William H. Wellman
- 申请人: William H. Wellman
- 申请人地址: CA Goleta
- 专利权人: Santa Barbara Research Center
- 当前专利权人: Santa Barbara Research Center
- 当前专利权人地址: CA Goleta
- 主分类号: G01J5/06
- IPC分类号: G01J5/06 ; G01J5/08
摘要:
A warmshield reflector for a cryogenically cooled radiation detector has a reflective surface of toroidal shape. The surface has geometric properties which cause a ray emanating from the detector to be reflected such that a ray is imaged as a defocused ring outside of and surrounding the active detector area. Several such segments are located in front of a small, cryogenically cooled detector shield, to provide an overall detector shielding effect similar to that of a larger, cryogenically cooled shield.