Optics: measuring and testing – Of light reflection
Patent
1977-09-07
1979-05-29
Corbin, John K.
Optics: measuring and testing
Of light reflection
250206, 250234, 356350, G01N 2148
Patent
active
041565711
ABSTRACT:
A measuring system for a ring laser mirror, or the like, is provided, whereby the mirror can be quickly scanned and the backscatter levels measured and presented in the form of a map which directly indicates the spots of the mirror where acceptable backscatter levels exist. When such a spot has been identified, the system of the invention is also capable of measuring the reflectivity of the spot, which normally must be approximately 99.7% to be acceptable. The system of the invention has the capability of measuring the reflectivity of the mirror in addition to measuring the backscatter in a single set-up, and without having to manipulate the mirror.
REFERENCES:
patent: 3431514 (1969-03-01), Oshman et al.
Applied Optics, vol. 16, No. 1, Jan. 1977, pp. 19-20, Sanders, V., "High-Precision Reflectivity Measurement Technique for Low Loss Laser Mirrors".
Jenkins et al., Fundamentals of Optics, Second Edition, McGraw-Hill, N.Y., 1950, p. 23.
Pribovy: Teckhnika Eksperiments, No. 4, pp. 183-184, Jul., Aug. 1975, Lisitsyn et al., "Measurement of the Reflection Coefficients of Mirrors".
Radiofizika, vol. 16, No. 4, pp. 531-536, Apr. 1973, Bershtein et al., "Detection and Measurement of Small Back-Scattering of Laser Radiation."
Arnold Bruce Y.
Corbin John K.
Kennedy T. W.
The Singer Company
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