公开(公告)号：US06262419B1

公开(公告)日：2001-07-17

申请号：US09101489

申请日：1998-09-01

Applicant: Thomas Huth-Fehre ,  Frank Kowol ,  Roger Feldhoff ,  Thomas Kantimm

Inventor： Thomas Huth-Fehre ,  Frank Kowol ,  Roger Feldhoff ,  Thomas Kantimm

IPC: G01N2135

CPC classification number: G01N21/3563 ,  G01N33/44

Abstract: In a process for recognizing organic substances in solids by measuring the spectram of the radiation which is reflected or transmitted, radiation with a wavelength between 2-4 &mgr;m is used and, for radiation of solids, unmodulated radiation is used. The radiation source should have an output of at least 50 W and the distance between the illumination optics from the solid being investigated should be at least 10 cm. Recognition is based on absorption bands of the extended oscillations of C—H bonds and sometimes the presence of absorption bands of N—H bonds. Broad band radiation is preferable for radiation of the solids, and the reflected or transmitted radiation is directed through a narrow band filter with adjustable transmission frequency. This can be advantageously formed with an acousto-optical filter.

Abstract translation: 在通过测量被反射或透射的辐射的光谱来识别固体中的有机物质的过程中，使用波长在2-4μm之间的辐射，并且对于固体辐射，使用未调制的辐射。 辐射源应具有至少50W的输出，并且来自被研究的实体的照明光学器件之间的距离应至少为10cm。 识别是基于C-H键的扩展振荡的吸收带，有时存在N-H键的吸收带。 宽带辐射对于固体的辐射是优选的，并且反射或透射的辐射被引导通过具有可调传输频率的窄带滤波器。 这可以有利地用声光滤波器形成。