Optics: measuring and testing – By polarized light examination – With light attenuation
Patent
1988-03-31
1991-03-26
Rosenberger, Richard A.
Optics: measuring and testing
By polarized light examination
With light attenuation
G01B 1124
Patent
active
050023969
ABSTRACT:
A displacement telemetering system comprises a light source for emitting a light beam, a reflector whose reflecting direction is variable to receive and reflect the light beam of the light source, a plurality of reflecting members disposed on an object to be measured to receive the light beam reflected by the reflector and to reflect the light beam in a direction antiparallel to the incident light beam, and an optical position detector for detecting the parallel displacement of a reflected light beam from one of the reflecting members with respect to an incident light beam to the same reflecting member.
A light beam of the light source is made incident onto one of the reflecting members on the object via the reflector. The reflecting member reflects the incident light beam in a direction antiparallel to the incident light beam. The reflected light beam is made incident onto the optical position detector via the reflector. The detector detects a parallel displacement of the reflected light beam of the reflecting member with respect to the incident light beam to the reflecting member. Then, according to the parallel displacement of light beam, the displacement position of the object is measured to determine the displacement amount of the object.
REFERENCES:
patent: 4457625 (1984-07-01), Greenleaf et al.
Collyer et al., "Electro-Optical System for Remote Position Measurements in Real Time," Large Space Systems Technology-1981, Third Annual Technical Review, Nov. 16-19, 1981, pp. 642-655.
Schock et al., "MSFC Data Analysis of the SAFE/DAE Experiment," Large Space Antenna Systems Technology-1984, Dec. 4-6, 1984; pp. 505-516.
Kabushiki Kaisha Toshiba
Rosenberger Richard A.
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