发明名称 |
Optical displacement sensor |
摘要 |
The optical displacement sensor modulates intensity of the light beam as a function of the physical displacement. The sensor includes a reflector positioned in a path of the light beam between a light source and a light detector. The reflector has a non-reflective portion surrounded by a reflective portion. Relative movement (displacement) of the beam and the reflector occurs as a function of a parameter which is being sensed. In a normal (no displacement) condition, the non-reflective portion can be positioned with respect to the light beam so that intensity of the light beam received by the detector is at a minimum, and the sensor is operating in a darkfield mode. Displacement from the normal position causes an increase in the light intensity received by the detector.
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申请公布号 |
US4806016(A) |
申请公布日期 |
1989.02.21 |
申请号 |
US19870049628 |
申请日期 |
1987.05.15 |
申请人 |
ROSEMOUNT INC. |
发明人 |
CORPRON, GARY P.;KLEVEN, LOWELL A.;JOHNSON, LAWRENCE A. |
分类号 |
G01D5/30;G01D5/26;G01D5/353;G01F1/32;G01P5/00;G01P13/00;(IPC1-7):G01J5/16 |
主分类号 |
G01D5/30 |
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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