Device for measuring the diameter of an object that is largely c

Details Device for measuring the diameter of an object that is largely c Device for measuring the diameter of an object that is largely c

1992-06-25

1994-10-11

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

356357, G01N 2100, G01B 1110

Patent

active

053552091

ABSTRACT:
A device for measuring the diameter of an object that is generally cylindrical such as, for example, an optical fiber, without contact.
This device includes a laser (4) capable of emitting a luminous beam, optical means (6, 8, 10) provided to form first and second luminous beams from the luminous beams emitted by the laser and to illuminate the object (2) with these first and second luminous beams, so as to obtain two luminous beams reflected by the object which interfere with one another, and means (CCD, 14) of photo-detection and analysis of the interference between the two reflected beams, capable of determining the diameter of the object from the interference fringes.

REFERENCES:
patent: 3994599 (1976-11-01), Southwell
patent: 4882497 (1989-11-01), Inoue et al.
patent: 4973343 (1990-11-01), Frazee, Jr. et al.
patent: 5015867 (1991-05-01), Siegel et al.
Article by S. Holly, published in Laser Focus, vol. 12, No. 3, Mar. 1976, pp. 58 to 60.

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