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A spectrophotometer and its control method

A technology of spectrophotometer and control method, which is applied in color/spectral characteristic measurement, absorption/scintillation/reflection spectrum, spectrum investigation, etc., can solve the problem of inaccurate wavelength correction, and achieve the effect of improving the accuracy of wavelength correction

Inactive Publication Date: 2015-09-16
SUZHOU RIGOL PRECISION ELECTRIC TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0010] The technical problem solved by the present invention is to solve the problem of inaccurate wavelength correction caused by using one wavelength correction coefficient for correction for all wavelengths

Method used

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  • A spectrophotometer and its control method
  • A spectrophotometer and its control method
  • A spectrophotometer and its control method

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Embodiment Construction

[0034] refer to figure 1 , the prior art spectrophotometer 1 usually includes a light source unit 101 that provides composite light, a monochromator 102 that generates monochromatic light according to the displacement, a measurement unit 103 that generates measurement results, and a measurement unit that generates light based on the measurement results. In the control unit 104 of the displacement, deuterium lamps and tungsten lamps are usually used as light sources in the light source unit 101 to provide composite light. Of course, other customary light sources can also be used. Generally, there are dispersion elements in the monochromator 102, and the dispersion elements Gratings are often used, and the monochromator 102 usually uses a motor to drive the normal mechanism to rotate the dispersion element to locate the monochromatic light of a certain wavelength. It can also be driven by a pulse motor and a reduction mechanism to locate the monochromatic light of a certain wavel...

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Abstract

The invention provides a spectrophotometer and a control method thereof. The spectrophotometer comprises a light source unit providing polychromatic light, a monochromator for generating monochromatic light according to displacement, a measurement unit for arranging sample to be measured, enabling the monochromatic light to irradiate into the sample to be measured and generating measurement results, and a control unit for generating displacement according to the measurement results. The control method comprises that monochromatic light between two peak values can be set according to wavelength and displacement of the monochromatic light corresponding to the two adjacent characteristic peak values. The spectrophotometer and the control method of the spectrophotometer can calibrate wavelength in subsection mode in a full wave band range of polychromatic light, and all wave bands have the same corresponding wavelength calibration coefficient, thereby effectively improving accuracy of the wavelength.

Description

technical field [0001] The invention relates to the field of general measuring devices using optical measuring methods, in particular to a spectrophotometer and a control method thereof. Background technique [0002] A spectrophotometer is a photoelectric analysis instrument that uses the selective absorption of light by a substance to perform qualitative and quantitative analysis of a substance, and is also a spectroscopic instrument. According to the principle of electromagnetic radiation, different substances have different selective absorption, that is, different absorption spectra. The internal structure and chemical composition of the substance can be easily judged through the analysis of the absorption spectrum. A spectrophotometer is a combination of a spectroscopic instrument and a photometer. According to different operating spectrum principles, spectrophotometers can be divided into spectrophotometers that study the absorption spectrum of substance molecules, at...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/42G01N21/31
Inventor 王悦王铁军李维森
Owner SUZHOU RIGOL PRECISION ELECTRIC TECH
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