发明名称 |
Optical space communication apparatus sending main signals and an auxiliary signal for controlling the intensity at the receiver |
摘要 |
An optical space communication apparatus comprises a transmitter and a receiver. The transmitter has a main signal generator for producing a main signal, an auxiliary signal generator for producing an auxiliary signal in a frequency band different from that of the main signal, a combiner for combining the main signal with the auxiliary signal, an electro-optical converter for converting a combined signal of the main signal and the auxiliary signal into a light signal, and a transmission optical system for transmitting the light signal formed in light beam. The receiver has a reception optical system for receiving the light signal in light beam and a photo-electric converter for converting the light signal into an electric signal. The receiver further has a separator for separating the electric signal converted by the photo-electric converter into a main signal and an auxiliary signal, and an auxiliary signal detector for detecting the auxiliary signal separated by the separator.
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申请公布号 |
US5610748(A) |
申请公布日期 |
1997.03.11 |
申请号 |
US19950415586 |
申请日期 |
1995.04.03 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
SAKANAKA, TETSUO;TAKAHASHI, YASUHIRO |
分类号 |
H04J14/08;H04B10/10;H04B10/105;H04B10/158;H04B10/22;(IPC1-7):H04B10/00 |
主分类号 |
H04J14/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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