Optics: measuring and testing – Photometers
Patent
1975-11-17
1976-12-28
Corbin, John K.
Optics: measuring and testing
Photometers
250227, 350 96B, 356209, G01N 2148
Patent
active
039998649
ABSTRACT:
An instrument for measuring the gloss of test samples at different predetermined angles of incidence, includes a glossimeter head operative to receive polychromatic light and direct it along plural beams at different angles of incidence towards an area on the surface to be analyzed. A plurality of light receptors are arranged to receive specular light reflected from the surface at different angles of reflection corresponding to the angles of incidence. The receptors include plural filters each one operative to pass light at a different wavelength than the others. The light collected by the receptors is passed through a monochromator to a light detector whereby the light directed at the different angles of incidence and reflections corresponds to different wavelengths. Fiber optic light pipes may be used to transmit light through the instrument. A plug type coupling may be used to convert a general purpose spectrophotometer to the purpose of measuring gloss.
REFERENCES:
patent: 3549264 (1970-12-01), Christie
patent: 3751643 (1973-08-01), Dill et al.
American Instrument Company, Bulletin 2115, May 1943, pp. 1-4.
Hunterlab Model D-16 Multipurpose Glossmeter, Oct. 1961, pp. 1-4.
Corbin John K.
Evans F. L.
International Business Machines - Corporation
McKechnie Douglas R.
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