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公开(公告)号:EP0175418A3
公开(公告)日:1987-05-13
申请号:EP85201454
申请日:1985-09-12
CPC分类号: G01J5/34 , H01L37/02 , H01L2224/48091 , H01L2224/73257 , H01L2924/16151 , H01L2924/16152 , H01L2924/00014
摘要: An infra-red radiation detector comprises a pyroelectric detector element (1) in an hermetically sealed housing (9, 20). The housing comprises a base (9) and a cover (20) with an aperture (10) surrounded by an inwardly directed flange (17). A self-locating window (18) capable of transmitting infra-red radiation which closes the aperture is fastened to the flange with adhesive. The window comprises a first portion (18a) which is adapted to fit and which is located within the aperture, and a second wider portion (18b) presenting a peripheral shoulder (18c) which bears against the flange. The second portion of the window is present outside the cover, giving a wide field of view. (Single Figure)