Textile color analyzer calibration

Details Textile color analyzer calibration Textile color analyzer calibration

1975-10-10

1977-06-14

Evans, F. L.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

250226, 356188, 356189, 356210, 356212, 356243, G01J 350, G01N 2148

Patent

active

040294196

ABSTRACT:
A spectrophotometer is operative to measure or analyze the colors of materials such as textiles. A test sample is held by a holder and is illuminated by polychromatic light. Diffuse light reflected from the sample is collected and converted to variable monochromatic light and detected. The system is calibrated by using a secondary white standard calibrated against a primary white standard, by using a black standard to compensate for dark current and internal reflectance from a pressure plate, and by using a mirror to obtain internal wall reflectance used in a correction factor.

REFERENCES:
patent: 2774276 (1956-12-01), Glasser et al.
patent: 3874799 (1975-04-01), Issacs et al.

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