Borehole optical lateral displacement sensor

Details Borehole optical lateral displacement sensor Borehole optical lateral displacement sensor

1996-08-29

1998-10-20

Font, Frank G.

Optics: measuring and testing

By polarized light examination

With light attenuation

356376, G01B 1114

Patent

active

058254960

ABSTRACT:
There is provided by this invention an optical displacement sensor that utilizes a reflective target connected to a surface to be monitored to reflect light from a light source such that the reflected light is received by a photoelectric transducer. The electric signal from the photoelectric transducer is then imputed into electronic circuitry to generate an electronic image of the target. The target's image is monitored to determine the quantity and direction of any lateral displacement in the target's image which represents lateral displacement in the surface being monitored.

REFERENCES:
patent: 4731744 (1988-03-01), Harrell, Jr. et al.
patent: 4869591 (1989-09-01), MacGregor
patent: 5430953 (1995-07-01), De Souza

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