Multisource device for photometric analysis and associated chrom

Details Multisource device for photometric analysis and associated chrom Multisource device for photometric analysis and associated chrom

1990-02-16

1991-12-17

McGraw, Vincent P.

Optics: measuring and testing

For light transmission or absorption

356 39, 356246, 356436, 422 8205, 422 8209, G01N 2159, G01N 110, G01N 3348

Patent

active

050730290

ABSTRACT:
An optoelectronic device is provided which permits rapid sequential measurement of the optical density of multiple samples. The device employs a plurality of light-emitting diodes (LEDs) as light sources and a plurality of photodiodes as light detectors. In a preferred embodiment, arrays of LEDs paired with photodiodes are adapted to measure the optical density of samples contained in multiwell plastic plates (microplates) conventionally used for immunoassays.

REFERENCES:
patent: 3910701 (1975-10-01), Henderson et al.
patent: 4357105 (1982-11-01), Loretz
patent: 4431307 (1984-02-01), Suovaniemi
patent: 4591550 (1986-05-01), Hafeman et al.

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