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Fourier infrared spectrograph movinglens scanning device

An infrared spectrometer and scanning device technology, which is applied to the field of moving mirror scanning devices of Fourier infrared spectrometers, can solve problems such as slow speed, backlash, complex structure, etc., and achieve the effects of small friction, long life and small size

Inactive Publication Date: 2008-04-23
WUHAN UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

Traditional mechanical structure (that is, intermediate links such as rotating motor + ball screw), mechanical components are prone to defects such as elastic deformation, friction, backlash, nonlinear error, etc.
Although the electro-pneumatic hydraulic system has small vibration and tilt, it is slow in speed and complex in structure, requiring an air supply and liquid supply system, which is not conducive to the miniaturization of the instrument and is greatly affected by the environment.

Method used

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  • Fourier infrared spectrograph movinglens scanning device
  • Fourier infrared spectrograph movinglens scanning device
  • Fourier infrared spectrograph movinglens scanning device

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Embodiment Construction

[0019] The structure diagram of the Fourier transform infrared spectrometer based on the classical Michelson interferometer is as follows: figure 1 As shown, it mainly consists of infrared light source 2, ellipsoidal mirrors 1, 12, aperture 3, parabolic mirrors 4, 14, laser 5, laser reflector 15, moving mirror scanning device 9, beam splitter 7, fixed mirror 6, moving mirror 8. A laser detector 10, a sample cell 13, and an infrared detector 11.

[0020] The sample to be detected is placed in the sample cell 13, the infrared beam emitted by the light source 2 is concentrated by the ellipsoidal mirror 1, collimated by the parabolic mirror 4, and directed to the beam splitter 7 with parallel light, and then the infrared light is divided into two beams, one beam Reflected into the fixed mirror 6, one beam is transmitted into the moving mirror 8 driven by the moving mirror scanning device 9, and the two beams return along the original path to interfere, and the interference light r...

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Abstract

The present invention includes linear motor, base movable reflector supporting mechanism and movable reflector. It features that said linear motor consisting of motor seat, magnetic core, coil sleeve, guiding device, movable reflector supporting mechanism consisting of slipper and guideway, magnetic force device set between slipper and to generate magnetic suspension acting. Said device provides a reasonable movable reflector straight-line motion scheme for Fourier infrared spectrometer with vibration free, small friction, compactness and long service life etc properties.

Description

technical field [0001] The invention belongs to the field of Fourier transform spectrometers, and relates to a moving mirror scanning device for Fourier transform infrared spectrometers. Background technique [0002] The Fourier transform spectrometer uses the Michelson interferometer to study the relationship between the interferogram and the spectrogram, and measures and studies the spectrum by measuring the interferogram generated by the double-beam interference light and performing Fourier changes on the interferogram. The specific working principle is as follows: signal The light (or light source) is reflected by a collimated concave mirror with a long focal length to form a parallel beam. The beam is split into two beams by the beam splitter coupler, which are respectively incident on the fixed mirror and the moving mirror system. The concave reflector converges the reflection to the detector. The horizontal linear movement of the moving mirror along the optical axis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/10G01J3/00
Inventor 许贤泽童爱清
Owner WUHAN UNIV
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