公开(公告)号：US06469786B2

公开(公告)日：2002-10-22

申请号：US09912480

申请日：2001-07-26

申请人： Haruo Shimaoka

发明人： Haruo Shimaoka

IPC分类号： G01N1502

CPC分类号： G01N15/0211

摘要： Scattered light obtained by irradiating parallel laser beam to particles to be measured is condensed by a condenser lens in a wide angle area from 0° to over 40°, and an intensity distribution of the light is spatially continuously measured by an optical sensor positioned at a focal point of the condenser lens. Before a particle size distribution is calculated from the measured light intensity distribution, measuring error of the scattered light intensity distribution caused by an aberration by the condenser lens and an attenuation on the optical path is corrected by comparing with data obtained through a ray tracing in advance. Thus, the scattered light in a wider angle area are spatially continuously measured to thereby obtain a light intensity distribution with a high resolution in a submicron area.

公开(公告)号：US06473178B2

公开(公告)日：2002-10-29

申请号：US10078449

申请日：2002-02-21

申请人： Haruo Shimaoka

发明人： Haruo Shimaoka

IPC分类号： G01D1502

CPC分类号： G01N15/0205

摘要： A particle size analyzer based on laser diffraction method is formed of an irradiation optical system for irradiating laser beam to particles, a measurement optical system for measuring a space intensity distribution by receiving light diffracted/scattered by the particles of the laser beam from the irradiation optical system, and an operation portion for obtaining a particle size distribution of the particles from the results measured by the measurement optical system. The irradiation optical system has a semiconductor laser in an output beam wavelength of 300 to 500 nm as a light source. Thus, particles having diameters of the order of sub-microns can be measured.

公开(公告)号：US06650414B1

公开(公告)日：2003-11-18

申请号：US09597085

申请日：2000-06-20

申请人： Haruo Shimaoka

发明人： Haruo Shimaoka

IPC分类号： G01N2100

CPC分类号： G01N15/0205

摘要： In a method of monitoring specific microbe in water, a monitored object water is supplied into a flow cell provided in a particle size analyzer based on the laser diffraction method, and by irradiating a laser beam to the flow cell, a spatial intensity distribution of the diffraction and scattering light by a group of the particles contained in the monitored object water is measured to obtain a particle size distribution of the group of the particles. Accordingly, information relating to a possibility of an existence of the specific microbe with a known diameter in the monitored object water can be obtained.

摘要翻译： 在监测水中的特定微生物的方法中，基于激光衍射法将监测对象水供给到设置在粒度分析仪中的流动池中，并且通过向流动池照射激光束， 测量受监测对象水中包含的一组颗粒的衍射和散射光，以获得该组颗粒的粒度分布。 因此，可以获得与监测对象水中具有已知直径的特定微生物的存在的可能性有关的信息。

公开(公告)号：US08313628B2

公开(公告)日：2012-11-20

申请号：US12374048

申请日：2006-07-19

申请人： Yoshio Tsunazawa ,  Yukihisa Wada ,  Naoji Moriya ,  Kenji Takubo ,  Shinichiro Totoki ,  Haruo Shimaoka

发明人： Yoshio Tsunazawa ,  Yukihisa Wada ,  Naoji Moriya ,  Kenji Takubo ,  Shinichiro Totoki ,  Haruo Shimaoka

IPC分类号： B03C5/02

CPC分类号： G01N21/4788 ,  B03C5/005 ,  B03C5/026 ,  G01N2015/0003 ,  G01N2015/0038

摘要： A distribution of AC electric field regularly arranged in a cell is formed while storing a sample having particles dispersed in a medium in the cell, whereby the particles are dielectrically migrated in the medium to generate a diffraction grating by density distribution of the particles. Diffracted light generated by irradiating the diffraction grating by density distribution with measuring light is detected, and evaluation of dielectrophoretic intensities of the particles and/or the medium is performed from the detection result. According to this method, evaluation of dielectrophoretic characteristics can be performed without adhering a phosphor to particles, and since even a particle small in size can achieve a detection level by collecting a number of such particles to form a diffraction grating, dielectric characteristics of microparticles of several nanometers in diameter can be thus quantitatively measured with high sensitivity.

摘要翻译： 形成规则排列在电池中的AC电场的分布，同时将具有分散在介质中的粒子的样品储存在电池中，由此在介质中介电迁移，从而通过颗粒的密度分布产生衍射光栅。 检测通过用测量光通过密度分布照射衍射光栅而产生的衍射光，并根据检测结果评估颗粒和/或介质的介电电泳强度。 根据该方法，可以在不将荧光体附着于粒子的情况下进行介电电泳特性的评价，并且，即使通过收集多个这样的粒子来形成衍射光栅，尺寸小的粒子也能够达到检测水平，所以微粒的介电特性 因此可以高灵敏度定量测量直径几纳米。

公开(公告)号：US20100012496A1

公开(公告)日：2010-01-21

申请号：US12374048

申请日：2006-07-19

申请人： Yoshio Tsunazawa ,  Yukihisa Wada ,  Naoji Moriya ,  Kenji Takubo ,  Shinichiro Totoki ,  Haruo Shimaoka

发明人： Yoshio Tsunazawa ,  Yukihisa Wada ,  Naoji Moriya ,  Kenji Takubo ,  Shinichiro Totoki ,  Haruo Shimaoka

IPC分类号： G01N15/00 ,  B01D57/02 ,  G01N15/02 ,  G01N21/47

CPC分类号： G01N21/4788 ,  B03C5/005 ,  B03C5/026 ,  G01N2015/0003 ,  G01N2015/0038

摘要： A distribution of AC electric field regularly arranged in a cell is formed while storing a sample having particles dispersed in a medium in the cell, whereby the particles are dielectrically migrated in the medium to generate a diffraction grating by density distribution of the particles. Diffracted light generated by irradiating the diffraction grating by density distribution with measuring light is detected, and evaluation of dielectrophoretic intensities of the particles and/or the medium is performed from the detection result. According to this method, evaluation of dielectrophoretic characteristics can be performed without adhering a phosphor to particles, and since even a particle small in size can achieve a detection level by collecting a number of such particles to form a diffraction grating, dielectric characteristics of microparticles of several nanometers in diameter can be thus quantitatively measured with high sensitivity.

摘要翻译： 形成规则排列在电池中的AC电场的分布，同时将具有分散在介质中的粒子的样品储存在电池中，由此在介质中介电迁移，从而通过颗粒的密度分布产生衍射光栅。 检测通过用测量光通过密度分布照射衍射光栅而产生的衍射光，并根据检测结果评估颗粒和/或介质的介电电泳强度。 根据该方法，可以在不将荧光体附着于粒子的情况下进行介电电泳特性的评价，并且，即使通过收集多个这样的粒子来形成衍射光栅，尺寸小的粒子也能够达到检测水平，所以微粒的介电特性 因此可以高灵敏度定量测量直径几纳米。

公开(公告)号：US06674528B2

公开(公告)日：2004-01-06

申请号：US10196629

申请日：2002-07-16

申请人： Motoaki Adachi ,  Kikuo Okuyama ,  Shinichiro Totoki ,  Michio Higuchi ,  Haruo Shimaoka ,  Akihiro Fukai

发明人： Motoaki Adachi ,  Kikuo Okuyama ,  Shinichiro Totoki ,  Michio Higuchi ,  Haruo Shimaoka ,  Akihiro Fukai

IPC分类号： G01D1502

CPC分类号： G01N1/2273 ,  G01N1/2202 ,  G01N15/0211 ,  G01N2001/2223 ,  G01N2015/0096

摘要： Suspended particulate matter in the atmospheric air is sucked into a container by a pump. The suspended particulate matter in the atmospheric air in the container is electrically charged so as to electrically collect it. The collected suspended particulate matter is irradiated with laser beams under the condition that the collected suspended particulate matter is dispersed at an appropriate concentration. A spatial intensity distribution of diffracted and scattered light obtained by irradiating laser beams to the suspended particulate matter is measured. A particle size distribution of the suspended particulate matter P is found from the result of measurement.

摘要翻译： 大气中悬浮的颗粒物质通过泵吸入容器中。 容器中的大气中的悬浮颗粒物质被充电以便电收集。 在收集的悬浮颗粒物以适当浓度分散的条件下，用激光束照射收集的悬浮颗粒物质。 测量通过向悬浮颗粒物质照射激光而获得的衍射和散射光的空间强度分布。 从测定结果可以看到悬浮颗粒物P的粒度分布。

公开(公告)号：US06417920B1

公开(公告)日：2002-07-09

申请号：US09699338

申请日：2000-10-31

申请人： Haruo Shimaoka

发明人： Haruo Shimaoka

IPC分类号： G01D1502

CPC分类号： G01N15/0205

摘要： A particle size analyzer based on laser diffraction method is formed of an irradiation optical system for irradiating laser beam to particles, a measurement optical system for measuring a space intensity distribution by receiving light diffracted/scattered by the particles of the laser beam from the irradiation optical system, and an operation portion for obtaining a particle size distribution of the particles from the results measured by the measurement optical system. The irradiation optical system has a semiconductor laser in an output beam wavelength of 300 to 500 nm as a light source. Thus, particles having diameters of the order of sub-microns can be measured.

摘要翻译： 基于激光衍射法的粒度分析仪由用于向粒子照射激光的照射光学系统形成，用于通过接受来自照射光的激光束的粒子衍射/散射的光来测量空间强度分布的测量光学系统 系统和用于从由测量光学系统测量的结果获得颗粒的粒度分布的操作部分。 照射光学系统具有作为光源的输出光束波长为300〜500nm的半导体激光器。 因此，可以测量直径为亚微米级的颗粒。

公开(公告)号：US5400139A

公开(公告)日：1995-03-21

申请号：US125166

申请日：1993-09-23

申请人： Haruo Shimaoka

发明人： Haruo Shimaoka

IPC分类号： B01F3/18 ,  B01F15/04 ,  G01N15/02 ,  G01N15/06

CPC分类号： G01N15/06 ,  G01N15/0205

摘要： A method and apparatus which measures a particle size distribution of each content of powdery contents. Particle size distributions of a plurality of mixtures are calculated by blending the contents in various proportions, referring to the previously measured particle size distribution of each content, then determining the relationship between particular particle sizes in the plurality of particle size distributions and a mixing proportion. A particle size distribution of a mixture blended with the contents is measured, finding the particular particle size in the previously calculated particle size distributions of the mixture, and an actual mixing proportion of the contents in the mixture is estimated from the found particle size and the relations previously determined.

摘要翻译： 测量每种粉末含量的粒度分布的方法和装置。 通过参照先前测量的每种含量的粒度分布，然后确定多个粒度分布中的特定粒度与混合比例之间的关系，通过以各种比例混合内容来计算多种混合物的粒度分布。 测量与内容物混合的混合物的粒度分布，根据先前计算的混合物的粒度分布找到特定的粒度，并根据所得到的粒度和 之前确定的关系。