Miniature portable infrared spectrograph

A technology of infrared spectrometer and infrared light source, which is applied in the field of micro-portable infrared spectrometer, can solve the problems of many internal moving parts, poor wavelength reproducibility, slow scanning speed, etc., and achieve the effect of less components, stable performance and high precision

Active Publication Date: 2006-09-13
温志渝 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it has the following disadvantages: slow scanning speed, poor wavelength reproducibility, and many internal moving parts
Acousto-optic tuned spectrometers have higher resolution and smaller volume, but generally have a narrow spectral range and are expensive

Method used

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  • Miniature portable infrared spectrograph

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, the present invention will be further described

[0021] see figure 1 , The spectrometer is composed of a pulsed infrared light source 1, a parabolic reflector 2, a scanning micromirror 3, a blazed grating 4, a turning reflector 5, a slit 6, and a room temperature infrared unit detector 7. The modulated pulsed infrared light emitted by the pulsed infrared light source 1 is an infrared beam with a very small divergence angle, which can be approximately regarded as an infrared beam emitted by a point light source. When the light beam is incident on the parabolic reflector 2, because the point light source can be regarded as At the focal point of the parabolic reflector 2, the light beam becomes a parallel light beam after being reflected by the parabolic reflector 2; the parallel light is reflected by the scanning micromirror 3 onto the blazed grating 4, and the continuous spectrum is decomposed into multiples by the diffrac...

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Abstract

A minimized and portable infrared spectrograph is composed of pulse infrared ray source, parabolic reflector, scanning micro - lens, flash grating, steering reflector, slit and high sensitivity of room temperature infrared unit detector. It features that a new light path system and pulse infrared ray source based on MEMS technology are applied on said spectrograph.

Description

technical field [0001] The invention belongs to the technical field of spectrum measurement, and relates to a miniature portable infrared spectrometer based on a scanning micromirror and a pulsed infrared light source. Background technique [0002] Infrared spectrometers have strong absorption characteristic spectra of hydrogen-containing groups and carbon-containing compounds in the near-infrared and mid-infrared spectral regions. We can use this property to determine the composition of substances, which makes infrared spectrometers widely used in industry, agriculture, chemical industry, It is widely used in medicine and other fields. However, the spectroscopic techniques used in existing infrared spectrometers mainly include raster scanning, Fourier, optical filter, acousto-optic tuning, etc., all of which have their own shortcomings. [0003] The grating scanning spectroscopic system uses a grating as a spectroscopic element, and by scanning the grating, decomposes the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/35
Inventor 温志渝向贤毅杜晓晴
Owner 温志渝
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