Title:
【発明の名称】光散乱式粒子検出装置
Document Type and Number:
Japanese Patent JP3124989
Kind Code:
B2
Abstract:
PURPOSE: To enhance the detection sensitivity by projecting a convex lens, for condensing the light scattered by particles in an irradiating region, from the inner wall face of a flow cell corresponding to the irradiating region into a channel for passing a sample fluid. CONSTITUTION: A channel 11a of a flow cell 11 is irradiated with light L1 emitted from a light source 1 through an irradiation optical system 2. When particles are present in a sample fluid passing through the channel 11a in the direction of arrow F, scattering light L2 is produced by the particle. The scattering light L2 enters a convex lens 12 within a range of condensation angle β. Since the convex lens 12 is located extremely close to an irradiating region Z, i.e., a particle to be detected, the scattering light L2 can be condensed over a wide angle as compared with a conventional condensation angle α. The scattering light L2 is condensed by a photoelectric converter 5 through the convex lens 12, the side wall of the flow cell 11, and a condensation optical system 13.
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Inventors:
Kaoru Kondo
Application Number:
JP31526994A
Publication Date:
January 15, 2001
Filing Date:
December 19, 1994
Export Citation:
Assignee:
Rion Co., Ltd.
International Classes:
G01N21/05; G01N21/53; G01N15/14; (IPC1-7): G01N15/14; G01N21/05; G01N21/53
Domestic Patent References:
| JP4369463A | ||||
| JP3100440A | ||||
| JP58103615A | ||||
| JP60214238A | ||||
| JP376151U | ||||
| JP2118244U |
Attorney, Agent or Firm:
Yu Koyama