Reflectance and luminescence calibration plate having a near-Lam

Details Reflectance and luminescence calibration plate having a near-Lam Reflectance and luminescence calibration plate having a near-Lam

1986-02-05

1987-05-05

Willis, Davis L.

Optics: measuring and testing

Standard

G01J 102

Patent

active

046627456

ABSTRACT:
In order to provide an calibration plate having both known reflectance and known luminescence characteristics for calibrating and proving a radiometer, which calibration plate exhibits a near-Lambertian surface reflectance, a ceramic or glass coating containing a rare earth photoluminescent material is bonded to a surface of a rigid substrate, such as a steel plate, and the ceramic coating is thereafter sandblasted with a fine abrasive in good condition.

REFERENCES:
patent: 4047032 (1977-09-01), Judge et al.
patent: 4302678 (1981-11-01), Schiffert
"Reflectivity Reference Standard for Toner Concentration Sensor", I.B.M. Technical Disclosure, Bilby, 11-1978.
"Requirements for Reflection Standards and Measurements of Their Reflection Values", Erb, Applied Optics, 2-1975, pp. 493-499.

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