发明名称 |
Dispersive near-infrared spectrometer with automatic wavelength calibration |
摘要 |
The present invention is a dispersive, diffraction grating, NIR spectrometer that automatically calibrates the wavelength scale of the instrument without the need for external wavelength calibration materials. The invention results from the novel combination of: 1) a low power He-Ne laser at right angles to the source beam of the spectrometer; 2) a folding mirror to redirect the collimated laser beam so that it is parallel to the source beam; 3) the tendency of diffraction gratings to produce overlapping spectra of higher orders; 4) a "polka dot" beam splitter to redirect the majority of the laser beam toward the reference detector; 5) PbS detectors and 6) a software routine written in Lab VIEW that automatically corrects the wavelength scale of the instrument from the positions of the 632.8 nm laser line in the spectrum. |
申请公布号 |
US6774368(B2) |
申请公布日期 |
2004.08.10 |
申请号 |
US20020093584 |
申请日期 |
2002.03.08 |
申请人 |
BAYLOR UNIVERSITY |
发明人 |
BUSCH KENNETH W.;RABBE DENNIS H. |
分类号 |
G01J3/28;(IPC1-7):G01J3/44 |
主分类号 |
G01J3/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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