发明名称 |
Frequency shifter and optical displacement measurement apparatus using the same |
摘要 |
A frequency shifter for modulating the frequency of an incident light beam is disclosed. This frequency shifter includes an electro-optic crystal portion to be arranged at an incident position, an electrode arranged on the electro-optic crystal portion, a voltage application unit for applying a voltage to the electro-optic crystal portion via the electrode, and a unit which is arranged at least at a portion of the electro-optic crystal portion to uniformize the temperature of the electro-optic crystal portion.
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申请公布号 |
US5629793(A) |
申请公布日期 |
1997.05.13 |
申请号 |
US19950499125 |
申请日期 |
1995.07.07 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
TAKAMIYA, MAKOTO;KADOWAKI, HIDEJIRO |
分类号 |
G01P3/36;G01B11/00;G01P5/00;G01S7/481;G01S7/491;G01S17/58;G01S17/87;G02F1/03;(IPC1-7):G02F1/23 |
主分类号 |
G01P3/36 |
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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