Optics: measuring and testing – By polarized light examination – With light attenuation
Patent
1988-05-18
1989-10-03
Rosenberger, Richard A.
Optics: measuring and testing
By polarized light examination
With light attenuation
G01B 1114
Patent
active
RE0330787
ABSTRACT:
A method of determining the displacement of a fiber optic sensor from a target in which a first lens is spaced from the target at a first distance an a second lens is spaced from said target at a second distance which provides the greatest intensity response at said first distance and thereafter spacing said first lens from said second lens to provide symmetrical slope values of response.
REFERENCES:
patent: 3792928 (1974-02-01), Poilleux
patent: 3940608 (1976-02-01), Kissinger et al.
patent: 4674882 (1987-06-01), Dorman et al.
Claeys Joseph V.
Mechanical Technology Incorporated
Rosenberger Richard A.
Sullivan Joseph C.
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