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Determining particle size concentrations in airborne dust - measuring different contributions of refraction, diffraction and reflection in very narrow forward scattering angle in near infrared

机译：测定空气中粉尘的粒径浓度-在近红外非常窄的前向散射角中测量折射，衍射和反射的不同贡献

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摘要

Measurements are made in a small angular range in accordance with the principle of confocal interlaced microscopy to suppress stray light and to limit the extent of the measurement volume (O) orthogonal and parallel to the axis of the beam. An aperture illuminated by the monochromatic beam from a source (L) is imaged in the centre of the chamber, and the source itself at an annular screen (RB1). USE/ADVANTAGE - In industrial medicine or environmental hygiene, estimation of more than one scattering parameter allows measurement of different large particle fractions as well as the smallest.

机译：根据共焦交错显微镜的原理在较小的角度范围内进行测量，以抑制杂散光并限制与光束轴正交和平行的测量体积（O）的范围。来自光源（L）的单色光束照射的光圈在腔室的中心成像，光源本身在环形屏幕（RB1）上成像。使用/优势-在工业医学或环境卫生中，对多个散射参数的估计可以测量不同的大颗粒部分以及最小颗粒。

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公开/公告号DE4130586A1

专利类型
公开/公告日1993-03-18

原文格式PDF
申请/专利权人 HELMUT HUND GMBH 6330 WETZLAR DE;
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申请/专利号DE19914130586
发明设计人 GEBHART JOSEF DR. 6057 DIETZENBACH DE;SCHOEPPLEIN MICHAEL DIPL.-PHYS. 6250 LIMBURG DE;SEIBEL HORST DIPL.-ING. 6330 WETZLAR DE;
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申请日1991-09-15
分类号G01N15/06;G01N21/49;
国家 DE
入库时间 2022-08-22 05:01:37

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