发明名称 |
Laser alignment system with modulated field |
摘要 |
A laser alignment system includes a transmitter and one or more receivers. The transmitter produces an alignment field by projecting laser energy in a non-planar reference cone, and the receivers locate this reference cone with photodetectors. The laser energy in the alignment field is modulated at 8 KHz and the signals produced by the photodetectors are filtered and amplified to increase the range of the system. Each receiver operates a display which indicates when it is aligned in the reference cone, and it produces an out-of-level indication when the transmitter is not properly aligned.
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申请公布号 |
US4732471(A) |
申请公布日期 |
1988.03.22 |
申请号 |
US19870004463 |
申请日期 |
1987.01.20 |
申请人 |
SPECTRA-PHYSICS, INC. |
发明人 |
CAIN, GARY L.;GOREN, SIDNEY B. |
分类号 |
G01B11/00;G01C5/00;G01C15/00;(IPC1-7):G01B11/26;G01C3/08 |
主分类号 |
G01B11/00 |
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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