Light beam focal spot elongation in flow cytometry devices

Details Light beam focal spot elongation in flow cytometry devices Light beam focal spot elongation in flow cytometry devices

1982-03-25

1985-02-12

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

356318, 2504612, G01N 2164

Patent

active

044987668

ABSTRACT:
A flow cytometry apparatus comprises a nozzle for flowing particles in a stream of fluid. A source of light, such as from a laser, is adapted to direct a beam of light at the flowing particles. A beam focusing lens is positioned in the optical path of the light beam to provide an elliptical beam spot at the focal stream to thereby elongate the focal spot of the beam. One or more parameters of the particles in the stream related to light from the beam striking the particles is detected in the flow cytometry apparatus.

REFERENCES:
patent: 3606547 (1971-09-01), Iwahashi
patent: 3710933 (1973-01-01), Fulwyler et al.
patent: 3826364 (1974-07-01), Bonner et al.
patent: 4243318 (1981-01-01), Stohr
patent: 4293221 (1981-10-01), Kay et al.

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