Optics: measuring and testing – For optical fiber or waveguide inspection
Patent
1991-01-16
1993-05-04
McGraw, Vincent P.
Optics: measuring and testing
For optical fiber or waveguide inspection
65 311, 65 312, 356382, G01B 1106, C03B 37023, C03B 3707
Patent
active
052086453
ABSTRACT:
A method and an apparatus for measuring the thickness of a coating provided around a cylindrical object such as an optical fiber optically. The cylindrical object is irradiated by a measuring light and the light derived from the object is received by a photo-detector so that the intensity of the derived light is measured to thereby detect the thickness of the coating.
REFERENCES:
patent: 3017512 (1962-01-01), Wolbert
patent: 4952226 (1990-08-01), Frazee, Jr. et al.
patent: 4957526 (1990-09-01), Frazee, Jr. et al.
Aikawa Haruhiko
Inoue Akira
Ishiguro Yoichi
McGraw Vincent P.
Sumitomo Electric Industries Ltd.
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