发明授权
- 专利标题: Optical measuring apparatus
- 专利标题(中): 光学测量仪器
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申请号: US841127申请日: 1986-03-18
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公开(公告)号: US4740081A公开(公告)日: 1988-04-26
- 发明人: Gerhard Martens , Thomas Helzel
- 申请人: Gerhard Martens , Thomas Helzel
- 申请人地址: NY New York
- 专利权人: U.S. Philips Corporation
- 当前专利权人: U.S. Philips Corporation
- 当前专利权人地址: NY New York
- 优先权: DEX3510704 19850323
- 主分类号: G01J1/02
- IPC分类号: G01J1/02 ; G01D5/26 ; G01D5/34 ; G01D5/353 ; G01K11/00 ; G01L11/00 ; G02B6/00 ; G01B9/02
摘要:
An optical sensor (1) is connected to an electro-optical transducer unit (35) and a measuring circuit (36) via an optical delay line (14) and an optical path (15). Error-free measurement values which are independent of the attenuation characteristics of the optical delay line (14) are obtained if the optical sensor (1) comprises a polarization splitter (3) which receives light pulses from the optical path (15) and from the optical delay line (14) and which is followed by a sensor body (2) which is traversed by the light pulses. A mirror (4) arranged on the side of the sensor body (2) on which the light is not incident reflects the light pulses back into the polarization splitter (3), which couples the light pulses back into the optical path (15) and the optical delay line (14).
公开/授权文献
- US5204633A Electromagnetic contactor with closure fault indicator 公开/授权日:1993-04-20