公开(公告)号：US20040011974A1

公开(公告)日：2004-01-22

申请号：US10057779

申请日：2002-01-24

Applicant: Rion Co., Ltd.

Inventor： Tomonobu Matsuda ,  Takashi Minakami ,  Kenji Sasaki ,  Tsutomu Nakajima

IPC: G01N015/06 ,  G01N021/49 ,  G01N021/85

CPC classification number: G01N15/1436 ,  G01N21/53

Abstract: According to the present invention, there is provided a light scattering type particle detector, using a semiconductor laser as a light source, for detecting particles contained in sample fluid which defines a flow path, wherein laser light generated from the semiconductor laser is irradiated to irradiate a region of the flow path with a concave mirror and thereby a particle detecting region is defined. According to the present invention, there is also provided a laser oscillator wherein the optical axis of a semiconductor laser for generating pumping laser light has a predetermined angle with respect to the optical axis of a laser medium for irradiating laser light by pumping. Using such a laser oscillator, laser light irradiated from the laser oscillator is condensed to irradiate a region of a flow path defined by sample fluid, and thereby a particle detecting region is defined. Particles contained in the particle detecting region are detected by receiving scattered light with a light receiving portion.

Abstract translation: 根据本发明，提供了一种使用半导体激光器作为光源的光散射型粒子检测器，用于检测限定流路的样品流体中包含的颗粒，其中照射从半导体激光器产生的激光以照射 定义具有凹面镜的流路的区域，从而确定粒子检测区域。 根据本发明，还提供了一种激光振荡器，其中用于产生泵浦激光的半导体激光器的光轴相对于用于通过泵浦照射激光的激光介质的光轴具有预定的角度。 使用这样的激光振荡器，从激光振荡器照射的激光被冷凝，照射由样品流体限定的流路的区域，从而定义了粒子检测区域。 通过用光接收部接收散射光来检测包含在粒子检测区域中的粒子。

公开(公告)号：US20030223062A1

公开(公告)日：2003-12-04

申请号：US10241080

申请日：2002-09-11

Applicant: Rion Co., Ltd.

Inventor： Tomonobu Matsuda ,  Takashi Minakami

IPC: G01N021/00

CPC classification number: G01N15/1459 ,  G01N2015/1447

Abstract: There is provided a particle detector comprising an optical cavity constructed of a solid-state laser which is optically pumped by pumping light generated from a pumping light source and a reflecting mirror, the optical cavity generating laser light, a flow path defined by sample fluid, and a particle detecting region where the laser light La is radiated upon the flow path, wherein particles passing through the particle detecting region are detected by receiving light scattered from the laser light due to the particles passing through the particle detecting region, and wherein the laser light generated within the optical cavity has a multi transverse mode, the cross section shape of which has a different length in the longitudinal direction and the transverse direction.

Abstract translation: 提供了一种粒子检测器，包括由固体激光器构成的光学腔，该固体激光器通过泵浦从泵浦光源和反射镜产生的光而被光泵浦，所述光学腔产生激光，由样品流体限定的流动路径， 以及粒子检测区域，其中激光La辐射在流路上，其中通过接收通过粒子检测区域的粒子从激光散射的光来检测通过粒子检测区域的粒子，并且其中激光器 在光腔内产生的光具有多横向模式，其横截面形状在纵向和横向上具有不同的长度。