Title:
レーザーを基礎とする血液分析システムにおける後方散乱を検出するための装置
Document Type and Number:
Japanese Patent JP2005536741
Kind Code:
A
Abstract:
A back-scatter detector for detecting light scattered backwardly (i.e., reflected) by an irradiated particle such as a blood cell comprises a plurality of optical fibers. A fiber optic holder having a centrally located opening for passing a light beam used to irradiate particles at a particle-interrogation zone serves to position the light-collecting ends at a desired position to collect back-scattered light. Preferably, the light-collecting ends of the optical fibers are positioned in a circular pattern centered about the irradiating light beam, and the respective axes of the supported portions of the optical fibers extend either parallel to the beam axis, or, more preferably, so that they converge at or near the location of the scattering source, i.e., the irradiated particle or cell. The latter configuration assures that the back-scatter light enters the fiber end substantially parallel to the fiber axis, thereby reducing optical transmission loses in the fiber.
Inventors:
Kramer, Donald El.
Application Number:
JP2004530874A
Publication Date:
December 02, 2005
Filing Date:
August 06, 2003
Export Citation:
Assignee:
Coulter International Corporation
International Classes:
G01N33/48; G01N15/14; G01N21/47; G01N33/483; G01N33/49; G02B6/02; G01N15/10; (IPC1-7): G01N15/14; G01N21/47; G01N33/48; G01N33/483; G01N33/49
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