Optics: measuring and testing – By shade or color – With color transmitting filter
Patent
1993-01-15
1995-01-31
Evans, F. L.
Optics: measuring and testing
By shade or color
With color transmitting filter
356301, 356417, 356419, 2504581, G01J 302, G01N 2164, G01N 2165
Patent
active
053862953
ABSTRACT:
A postacquired spectrophotometer, for use with a sample and reference. The spectrophotometer has a filter unit, defining an axis of movement, and pluralities of designated sites and dark sites disposed in uniform relation to the axis. The designated and dark sites are disposed in alternation. Alternating designated sites have apertures and filters covering the apertures. Further, a main member, coaxial with the filter unit, has sample and reference beam paths, which are intersected by the sites. The main member has disposed, in operative relation to the actuators, an actuator sensor, which generates an integration actuator signal upon alignment with each integration actuator and a clamping actuator signal upon alignment with each clamping actuator. Moreover, a drive continuously moves the filter unit relative to the axis and beam paths. Further, a light distribution system directs light separately from the sample and reference to respective beam paths, and then to a detector, which produces a detector signal responsive to light received. Finally, means for processing the signals is provided, including a clamping circuit, integrators, and a demultiplexer.
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Liu Hsue-Yang
Lowne Alan J.
Sandifer James R.
Switalski Steven C.
Uerz David S.
Bailey Clyde E.
Eastman Kodak Company
Evans F. L.
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