Particle analyzer including a rod lens having a curved surface

Details Particle analyzer including a rod lens having a curved surface Particle analyzer including a rod lens having a curved surface

1996-09-13

1998-10-13

Font, Frank G.

Optics: measuring and testing

By particle light scattering

With photocell detection

356338, 356339, G01N 2100

Patent

active

058220623

ABSTRACT:
A particle analyzer which can maintain optical characteristics of an optical system which is one component thereof at a fixed level for a long period of time is provided. In the particle analyzer comprising a flow cell for forming a sheathed sample flow containing particulate components; an irradiating optical system for irradiating a sheathed sample flow formed in the flow cell; and a light receiving optical system for receiving light emitted from the sheathed sample flow in the flow cell irradiated by the irradiating optical system, the light receiving optical system comprises a rod lens to which the light emitted from the sheathed sample flow in the flow cell enters and an entrance surface of the rod lens is curved.

REFERENCES:
patent: 4577110 (1986-03-01), MacBride et al.
patent: 4847734 (1989-07-01), Katoh et al.
patent: 5054902 (1991-10-01), King
patent: 5140464 (1992-08-01), Kyogoku et al.
patent: 5173800 (1992-12-01), King
patent: 5188092 (1993-02-01), White
patent: 5237386 (1993-08-01), Harley

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