Electro-optical detection system

Details Electro-optical detection system Electro-optical detection system

1987-03-16

1988-10-04

Evans, F. L.

Optics: measuring and testing

By shade or color

With color transmitting filter

2504581, 356317, G01N 2164

Patent

active

047752378

ABSTRACT:
An improved electro-optical detection system is disclosed capable of use in a fluorescent polarization instrument. In a single or dual channel system, an integrated photodetector/amplifier is combined with a linear charge-balancing voltage-to-frequency converter to produce a digital frequency indicative of the intensity of polarized fluorescence emmited by a chemically treated body fluid sample, such as blood, upon light excitation thereof. A chopper-stabilized amplifier is further connected to the input of the voltage-to-frequency converter for automatically correcting input offset currents and temperature drift. The digital frequency is counted and the data corresponding thereto is transferred via bus connection to a microcomputer for evaluation and display.

REFERENCES:
patent: 3897155 (1975-07-01), Smythe
patent: 3985442 (1976-10-01), Smith et al.
patent: 4201472 (1980-05-01), Maeda
patent: 4412744 (1983-11-01), Lee et al.
patent: 4451149 (1984-05-01), Noeller

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