Method and apparatus for measuring gloss which correlates well w

Details Method and apparatus for measuring gloss which correlates well w Method and apparatus for measuring gloss which correlates well w

1985-02-13

1986-09-23

Rosenberger, R. A.

Optics: measuring and testing

Of light reflection

With diffusion

G01N 2147

Patent

active

046132350

ABSTRACT:
A method and apparatus for measuring the gloss of a surface of a material by receiving light reflected from the surface and measuring the amount of light. Parallel light rays from a light source are directed against the surface the gloss of which is to be determined at an angle of incidence, and a cross-section of light rays reflected from the surface at an angle of reflection equal to the angle of incidence is received and the central region of the cross-section of the light rays is blocked out by a light intercepting plate, so that only the light received after the blocking out of the central region is used as a determination of the gloss of the surface.

REFERENCES:
patent: 2604809 (1952-07-01), Mitchell
patent: 3718399 (1973-02-01), Kalman
patent: 4184082 (1980-01-01), Peoples
International Standard ISO 2813, "Paints and Varnishes--Measurement of Specular Gloss of Non-Metallic Paint Films at 20.degree., 60.degree. and 85.degree.", second edition, 1978.

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