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Spectrum measuring system

A technology for spectral measurement and light measurement, which is applied in the field of spectral information measurement, can solve the problems of inability to separate the absorption spectrum and scattering spectrum of substances, and the inability to measure quantitatively, and achieve the effect of small error in measurement results

Active Publication Date: 2014-01-08
TSINGHUA UNIV
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Problems solved by technology

[0004] However, the existing spectrophotometer can only directly measure the reflection, transmission and fluorescence spectra of the substance, so the extinction spectrum of the substance can only be obtained indirectly, and the existing spectrophotometer cannot separate the absorption spectrum and scattering spectrum of the substance , so quantitative measurements of absorption and scattering spectra cannot be performed

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Embodiment Construction

[0015] The spectrum measurement system provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0016] see figure 1 , the first embodiment of the present invention provides a spectrum measurement system 100, the spectrum measurement system 100 includes a light source module 20, a chopper 6, a reference sample module 30, a reflection module 40, a sample cell 3 and a photoelectric Detection and processing unit 5. The light emitted by the light source module 20 is split by the chopper 6 to form two beams. One beam of light enters the photoelectric detection and processing unit 5 after passing through the reference sample module 30 ;

[0017] The light source module 20 is used to generate monochromatic light. In this embodiment, the light source module 20 includes a light source 1 and a monochromator 2. The light generated by the light source 1 passes through the monochromator 2 to generate monochromatic light. . The li...

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Abstract

The invention provides a spectrum measuring system which mainly comprises a power source module, a light chopper, a reference sample module, a reflection module, a sample pool and a photoelectric detecting and processing unit. The power source module is used for generating monochromatic light. The light chopper is used for dividing the monochromatic light produced by the power source module into a path of reference light beam and a path of measuring light. The reference sample module comprises a reference sample pool and an attenuation slice which are arranged on the light path of the reference light in sequence. The reflection module is arranged on the light path of the measuring light so as to change the direction in which the measuring light is irradiated to a sample to be measured, and an included angle is formed between the measuring light irradiated to the sample to be measured and measuring light scattered by the sample to be measured. The sample pool is arranged on the light path of the measuring light emitted from the reflection module and used for bearing the sample to be measured. The photoelectric detecting and processing unit is used for processing the two light beams, and then an extinction spectrum and a scattered spectrum are obtained.

Description

technical field [0001] The invention relates to the field of spectral information measurement, in particular to a dual-beam spectral measurement system applied to the measurement of extinction spectrum, scattering spectrum and absorption spectrum information. Background technique [0002] With the continuous advancement of technology, people's measurement requirements for material extinction spectrum information are increasing day by day. In the past few decades, spectrophotometer has been widely used as an important scientific research instrument in the field of spectral measurement. Existing spectrophotometers mainly include three types: single-beam, double-beam and dual-wavelength. They are used in many industries, including semiconductor, laser and optical manufacturing, printing and forensic testing, and research of chemical substances in laboratories. [0003] Extinction spectrum includes scattering spectrum and absorption spectrum. With the continuous deepening of h...

Claims

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Application Information

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IPC IPC(8): G01J3/42G01J3/44G01N21/31
CPCG01N2201/065
Inventor 徐宁汉肖晓飞白本锋谭峭峰金国藩
Owner TSINGHUA UNIV
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