Laser based gaging system and method of using same

Details Laser based gaging system and method of using same Laser based gaging system and method of using same

1985-05-03

1987-07-07

Rosenberger, R. A.

Optics: measuring and testing

By configuration comparison

With photosensitive film or plate

356386, G01B 1102

Patent

active

046783377

ABSTRACT:
The present invention relates to a method of and apparatus for measuring the width of an object. The object is moved across a first beam and a photodetector produces a signal indicating when the object is eclipsing the beam. An interferometer is trained on a device for moving the object across the beam and is used to calculate the distance the moving device travels while the object is eclipsing the beam. From that distance, the width of the object can be calculated.

REFERENCES:
patent: 3480141 (1969-11-01), Rock, Jr.
patent: 4063103 (1977-12-01), Sumi

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