发明名称 |
Optical transmission device |
摘要 |
An optical transmission device for providing stable communication with a partner device by reducing errors in optical axis misalignment. Such errors are caused by uneven distribution of the light intensity in a received light beam resulting from atmospheric microscopic fluctuations. A cross pattern filter having at least two cross patterns is used at a partner transmission device side with respect to an incident direction detecting means, and arranged so that a cross pattern generated on the position detecting photodetector by the cross pattern filter and parting lines for dividing a position detecting photodetector do not overlap with each other, but intersect with each other.
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申请公布号 |
US2004190908(A1) |
申请公布日期 |
2004.09.30 |
申请号 |
US20040808022 |
申请日期 |
2004.03.23 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
YOSHIMI TAKAHIRO;OHMURO RYUJI |
分类号 |
H01L31/16;H04B10/10;H04B10/105;H04B10/22;(IPC1-7):H04B10/00 |
主分类号 |
H01L31/16 |
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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