Simultaneous multiple wavelength photometer

Details Simultaneous multiple wavelength photometer Simultaneous multiple wavelength photometer

1985-06-10

1987-04-14

Evans, F. L.

Optics: measuring and testing

By shade or color

With color transmitting filter

350315, 356419, G01J 351

Patent

active

046573984

ABSTRACT:
Simultaneous multiple photometer measurements are made by simultaneously passing light to be measured through multiple light paths to different locations of a circularly variable filter; passing the light through the circularly variable filter at said locations; collecting the light passed through the circularly variable filter at each location; transmitting the light passed through the circularly variable filter to separate detectors; and measuring the light transmitted along each light path by said detectors.

REFERENCES:
patent: 3416864 (1968-12-01), Keahl et al.
patent: 3437411 (1969-04-01), Rudomanski et al.
patent: 3834817 (1974-09-01), Vinnemann et al.
patent: 3885879 (1975-05-01), Louder et al.
patent: 4029419 (1977-06-01), Schumann, Jr. et al.
patent: 4054389 (1977-10-01), Owen
Barnett et al., Applied Optics, vol. 16, No. 4, Apr. 1977, pp. 967-972.

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