Title:
【発明の名称】粒子測定装置のための凹角照射システム
Document Type and Number:
Japanese Patent JP2002502490
Kind Code:
A
Abstract:
Small, mobile particles in a fluid are optically detected by an apparatus having spaced apart reflectors bordering and defining an optical cavity into which a light beam is introduced. The reflectors are arranged along axes which are slightly misaligned such that the light beam is introduced at a low angle, barely over the edge of one of the reflectors, and is repeatedly reflected between the two reflectors, overlapping itself many times in a view volume located within the optical cavity, thereby increasing the intensity of detected particles. A fluid flow is introduced into the view volume and the light scattered by particles as they pass through the intensely illuminated view volume is received by a detector which observes the view volume. The detector produces a signal which is indicative of characteristics such as the number or size of particles.
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Inventors:
Garvin, Kennis El
Application Number:
JP50324797A
Publication Date:
January 22, 2002
Filing Date:
June 07, 1996
Export Citation:
Assignee:
Pacific Scientific Instruments Company
International Classes:
G01N15/14; G01N21/47; (IPC1-7): G01N15/14; G01N21/47
Attorney, Agent or Firm:
Fukami Hisaro (3 outside)