Baseline correction in densitometrical measurements

Details Baseline correction in densitometrical measurements Baseline correction in densitometrical measurements

1975-08-22

1977-03-22

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

250557, 356 82, 356 96, 356203, G01N 2100, G01J 336

Patent

active

040133648

ABSTRACT:
Method and apparatus for densitometry wherein a sample spot developed on a supporting medium is scanned by monochromatic light in a zigzag way, and at a predetermined point outside the spot in each scanning stroke the measured output is periodically sampled and stored so as to be subtracted from the measured output during the scanning stroke for correction of the base line of the measured output.

REFERENCES:
patent: 3768913 (1973-10-01), Klimecki
patent: 3887281 (1975-06-01), Kurita et al.
patent: 3924948 (1975-12-01), Thoden et al.

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