Dark field illuminator and collector apparatus and method

Details Dark field illuminator and collector apparatus and method Dark field illuminator and collector apparatus and method

1978-07-31

1980-04-22

Smith, Alfred E.

Radiant energy

Luminophor irradiation

Methods

250461B, 350 91, 356342, 356 39, G01J 158, G01N 2138, G01N 2100, G01N 3316

Patent

active

041996860

ABSTRACT:
There is disclosed an illuminator and collector apparatus and method for fluorescence analysis wherein illumination of a stream of particles produces fluorescent light. A reflector, having a concave reflector surface with a first focus disposed in the stream of particles, has reflected therefrom organized illuminating radiation, such radiation converging upon the first focus to stimulate the particles into producing the fluorescent light. The fluorescent light emanates from the first focus, a portion of which is reflected from the concave reflector surface. This fluorescent light which is focused on the second focus contains no (or negligible) amount of illuminating radiation and is collected for subsequent detection and processing.

REFERENCES:
patent: 2661658 (1953-12-01), Dyson
patent: 3457407 (1969-07-01), Goldberg
patent: 3622796 (1971-11-01), Harris
patent: 3946239 (1976-03-01), Salzman et al.
Brochure, "Pulse Cytophotometer ICPII", Phywe Aktiengesellschaft 34 Gottingen, undated.

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