Apparatus for the measuring and controlling the eccentricity of

Details Apparatus for the measuring and controlling the eccentricity of Apparatus for the measuring and controlling the eccentricity of

1991-09-03

1993-08-17

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

118712, 2503581, 2503591, 356357, 427 10, G01B 1106, G01N 2189, B05C 1100, B05D 126

Patent

active

052373835

ABSTRACT:
The apparatus for measuring and controlling the eccentricity of a colored coating layer of an optical fiber allows continuous on-line measurement of the eccentricity of the colored layer and high-speed control of the devices envisaged for its deposition in order to make corrections possible. The measurement is carried out by launching into the fiber a monochromatic light beam with a wavelength in the near infrared and by analyzing the interference patterns obtained by a TV camera sensitive to such a wavelength.

REFERENCES:
patent: 4042723 (1977-08-01), Presby
patent: 4208126 (1980-06-01), Cheo et al.
patent: 4370355 (1983-01-01), Niesse
patent: 4390897 (1983-06-01), Smithgall, Sr.
patent: 4881489 (1989-11-01), Klebl
patent: 4909631 (1990-03-01), Tan et al.
patent: 4952226 (1990-08-01), Frazee et al.
patent: 4988875 (1991-01-01), Ortiz et al.
H. M. Presby "Geometrical Uniformity of Plastic Coatings on Optical Fiber pp. 1525-1537; 1976, vol. 55, No. 10; Dec. 1976.
D. H. Smithgall et al; "High-Speed Measurement and Control of Fiber-Coating Concentricity"; pp. 2065-2080; 1981, vol. 60, No. 9 Nov. 1981.
NIST National Institute of Standards and Technology-Special Publication 792-Technical Digest Symposium on Optical Fiber . . . 1990 pp. 67-70.

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