The specific function of fiber optic spectrometer are understand

by:FOT     2020-07-02
You always know for the specific function of fiber optic spectrometer fiber optic spectrometer with spectrum with the rapid development of industry, it is becoming more and more recognition in the domestic, the product performance and quality almost same compared with foreign products. Fiber optic spectrometer small volume, simple operation, professional testing personnel can quickly master the operation method, short test time, just a few seconds to complete the sample test, at the same time without complex pretreatment, thus can be widely used in food safety field detection. Fiber optic spectrometer due to its advantages of high accuracy, high speed, has become an important measure to spectrum used in the surveying instrument is widely used in agriculture, biology, chemistry, geology, food safety, chromaticity calculation, environmental inspection, medicine and health care, LED, semiconductor industry, petrochemical industry, etc. fiber optic equipment spectrometer is a kind of measuring tool, mainly used for measuring the ultraviolet, visible and near infrared instruments, measurement, high degree, flexible use, good reliability, etc. User functions are specific for fiber optic spectrometer understand? Small make up today is to introduce the function of fiber optic spectrometer, hope you can help to you. The choice of grating spectrometer grating depends on the fiber spectrometer spectral range and resolution requirements. For the fiber optic spectrometer, usually in the 190 - nm - spectral range 1000 nm. Due to demand higher resolution can be hard to get broad spectrum scope; At the same time, the higher the resolution requirements, its luminous flux will be less. For low resolution and wider spectral range, 600 lines/mm grating is usually the choice. If the requirement is high spectral resolution, you can select 1800 lines/mm grating, or choose more pixels resolution of the detector. Fiber optic spectrometer slit narrow slit can improve the resolution, but less flux; Broad slit, on the other hand, can increase the sensitivity, but lose resolution. In the different application requirements, choose the right slit width so that the whole optimization of spectrometer test results. Fiber optic spectrometer detector probe is in some ways determines the sensitivity and resolution of the spectrometer, detector light sensitive area is limited in principle, it is divided into many small pixels for high resolution or divided into fewer but larger pixel for high sensitivity. Back light sensitive CCD detector sensitivity is usually better, to a certain extent, so it can get better resolution in the case of no sensitivity. Near infrared detectors due to high sensitivity and thermal noise itself, adopt the way of refrigeration can effectively improve the SNR of the system. Fiber optic spectrometer with filter spectral itself multistage diffraction effects, the filter can reduce the interference of multistage diffraction. Unlike conventional spectrometer, spectrometer is coated on detector, this part of the function in the factory need to install in place. At the same time, the coating also has the function of antireflective improve the SNR of the system. The performance of spectrometer is mainly determined by spectral range, optical resolution and sensitivity. For more than one parameter changes usually will impact on the performance of spectrometer of other parameters.
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