发明授权
- 专利标题: Optoelectric transducer
- 专利标题(中): 光电传感器
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申请号: US839719申请日: 1986-03-14
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公开(公告)号: US4714828A公开(公告)日: 1987-12-22
- 发明人: Claude Bacou , Rene Baptiste , Henri Feissel , Gilbert Takats , Christian Cabrol
- 申请人: Claude Bacou , Rene Baptiste , Henri Feissel , Gilbert Takats , Christian Cabrol
- 申请人地址: FRX Paris
- 专利权人: Bull S.A. (Societe Anonyme)
- 当前专利权人: Bull S.A. (Societe Anonyme)
- 当前专利权人地址: FRX Paris
- 优先权: FRX8503745 19850314
- 主分类号: H04B10/04
- IPC分类号: H04B10/04 ; H03G3/20 ; H04B10/00 ; H04B10/06 ; H04B10/14 ; H04B10/158 ; H04B10/26 ; H04B10/28 ; H01J40/14
摘要:
An optoelectronic transducer is proposed which includes a PIN diode (2) that delivers a current that is proportional to a light signal that is received. The diode is connected to the input of an inverting amplifier (4) that delivers a voltage signal v.sub.s. A negative feedback means of the transfer impedance type (6) is connected across the inverting amplifier. The transducer further includes a stabilizing means (8) for the amplifier gain and a temperature drift compensating means (10) for compensating for the drift in amplifier temperature. The stabilizing means (8) includes a detector (26, 28, 32) for the high peak of the signal v.sub.s, and the temperature drift compensating means (10) includes a filter means (38) for producing the means value v.sub.m of the signal v.sub.s, and a comparator (40) that receives the signals v.sub.s and v.sub.m and delivers a signal that reproduces the interference of the light signal that has been received. The temperature drift compensating (10) also includes a carrier wavedetection (cs) with automatic control (42). This automatic control enables very high speed detection of the carrier wave not only at a high level, but at a low level as well.
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