Optical read head for immunoassay instrument

Details Optical read head for immunoassay instrument Optical read head for immunoassay instrument

1989-07-12

1990-07-31

Hannaher, Constantine

Radiant energy

Luminophor irradiation

With ultraviolet source

250372, 2504612, 356417, 356418, G01N 2164, G02B 2604

Patent

active

049452509

ABSTRACT:
A low cost optical system which incorporates a low ultraviolet output tungsten halogen light source and solid state photodetectors and circuitry in such a way as to provide reliable fluorometric test results. The attainment of reliable results using such components is made possible by incorporating highly ultraviolet transmissive optics to maximize ultraviolet light throughput and by using solid state circuitry together with a filter wheel having both light blocking and light passing regions in a manner which fully accounts for noise and dark signals associated with solid state photodetectors.

REFERENCES:
patent: 3811777 (1974-05-01), Chance
patent: 3833304 (1974-09-01), Liston
patent: 3937614 (1976-02-01), Sodickson et al.
patent: 3963351 (1976-06-01), Chance et al.
patent: 3973129 (1976-08-01), Blumberg et al.
patent: 4159874 (1979-07-01), Dearth et al.
patent: 4477190 (1984-10-01), Liston et al.
patent: 4614434 (1986-09-01), Welch et al.
patent: 4676653 (1987-06-01), Strohmeier et al.

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