Spectral calibration device
A technology of spectral calibration and equipment, applied in the directions of spectrometry/spectrophotometry/monochromator, spectrum survey, optical radiometry, etc. , to reduce errors, improve accuracy, and facilitate the use of
Inactive Publication Date: 2017-09-29
SUZHOU HUALAI PHOTOELECTRIC INSTR
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Since the light emitted by the light source needs to be transformed and processed over a long distance, and the controller can only process the final result, if there is an abnormality in the middle, the controller will obtain wrong data, resulting in a large error in spectral calibration, which will affect the follow-up usage of
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[0015] The technical scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
[0016] Such as figure 1 As shown, a spectral calibration device includes a light source 1, a monochromator 3, a mirror 6, an imaging spectrometer 8 and a controller 12, and the light emitted by the light source 1 enters the monochromator 3 through an optical chopper 2 The input slit of the said controller 12 is connected with the monochromator 3, and the light outputted by the output slit of the monochromator 3 is incident in the aperture of the imaging spectrometer 8 through the collimator 4 and the reflector 6 successively, and the imaging spectrometer 8 The output end is connected to a lock-in amplifier 10 through a preamplifier 9 , and the loc...
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The invention discloses a spectral calibration device comprising a light source, a monochromator, a reflector, an imaging spectrometer and a controller. The light emitted by the light source enters the input slit of the monochromator through an optical chopper. The controller is connected with the monochromator. The light output from the output slit of the monochromator enters the aperture of the imaging spectrometer successively through a collimator and the reflector. The output end of the imaging spectrometer is connected with a phase-locked amplifier through a preamplifier. The phase-locked amplifier is connected to the controller via an analog-to-digital converter. Preferably, a first optical detector is arranged between the collimator and the reflector, a second optical detector is arranged between the reflector and the imaging spectrometer, the first optical detector and the second optical detector are connected to the controller, and the controller is connected to a display. The spectral calibration device reduces the errors of spectral calibration, improves the accuracy of spectral calibration, and facilitates subsequent use.
Description
technical field [0001] The invention relates to a spectrum calibration device. Background technique [0002] Spectral calibration is used to determine the response of each pixel of the imaging spectrometer to light of different wavelengths. It is an important optical device. In the existing design, the controller controls the monochromator to scan at a certain step in the corresponding wavelength range, and The collected light undergoes a series of processing and transformation to obtain the signal, and finally obtains the response of each pixel to light of different wavelengths. Since the light emitted by the light source needs to be transformed and processed over a long distance, and the controller can only process the final result, if there is an abnormality in the middle, the controller will obtain wrong data, resulting in a large error in spectral calibration, which will affect the follow-up usage of. Contents of the invention [0003] In view of the above problems,...
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IPC IPC(8): G01J3/28
CPCG01J3/2823
Inventor 薛文英
Owner SUZHOU HUALAI PHOTOELECTRIC INSTR