发明名称 |
Optical measurement using polarized and unpolarized light. |
摘要 |
<p>Physical quantities such as pressures, accelerations and electrical currents including dc currents are measured by alternately passing polarized and unpolarized light through an optical-sensor which modifies the polarization of the poralized light in proportion to the magnitude of the physical quantity while passing the unpolarized light unaltered by the physical quantity. Light emerging from the optical sensor is converted into an electrical signal by an analyzer and a photodetector. The difference between the electrical signal generated by the polarized light and a reference signal is proportional to the magnitude of the physical quantity.</p> |
申请公布号 |
EP0247842(A2) |
申请公布日期 |
1987.12.02 |
申请号 |
EP19870304675 |
申请日期 |
1987.05.27 |
申请人 |
WESTINGHOUSE ELECTRIC CORPORATION |
发明人 |
MILLER, ROBERT CHARLES;ASARS, JURIS ANDREJS |
分类号 |
G01D5/26;G01D5/34;G01L1/24;G01P15/03;G01P15/093;G01R15/24 |
主分类号 |
G01D5/26 |
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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