Title:
血液細胞及びこれに類するものを分化するために光散乱を検出するための光ファイバ装置
Document Type and Number:
Japanese Patent JP2005536740
Kind Code:
A
Abstract:
Apparatus for detecting light scattered by a small particle (e.g., a blood cell) irradiated by a light beam comprises one or more photodetectors and a plurality of optical fibers that serve to optically couple the scattered light and the photodetector(s). To enhance the efficiency of such optical coupling, a portion of each of the optical fibers in the vicinity of its light-collecting end is supported so that its optical axis extends towards the light-scattering source. By this arrangement, scattered light enters each fiber from a direction substantially parallel to the fiber axis. Preferably, the light-collecting ends of the optical fibers are supported on a concave surface and so that the respective optical axes of the fibers converge at a point representing the apparent position of the light-scattering source, taking into account the refractive effects of an optical flow cell through which scattering is detected. Preferably, both forward- and back-scattered light are detected by the apparatus of the invention.
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Inventors:
Kramer, Donald El.
Application Number:
JP2004530873A
Publication Date:
December 02, 2005
Filing Date:
August 06, 2003
Export Citation:
Assignee:
Coulter International Corporation
International Classes:
G01N15/14; G01N21/05; G01N21/27; G01N21/51; G01N21/53; G01N15/00; G01N15/10; (IPC1-7): G01N15/14; G01N21/27; G01N21/53
Domestic Patent References:
| JPH10132728A | 1998-05-22 | |||
| JPH09203703A | 1997-08-05 | |||
| JPH049704A | 1992-01-14 | |||
| JPH0593724A | 1993-04-16 | |||
| JPS6114543A | 1986-01-22 | |||
| JP2003531735A | 2003-10-28 | |||
| JP2002022641A | 2002-01-23 |
Foreign References:
| WO2001081902A1 | 2001-11-01 |
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tetsuro Shimada
Kurachi Yasuyuki
Shimichi Akihisa
Masaya Nishiyama
Jun Tsuruta
Tetsuro Shimada
Kurachi Yasuyuki
Shimichi Akihisa
Masaya Nishiyama