Everything in the world is closely related to the spectrum, we can see in daily life in the seven kinds of sunlight is the visible part of the naked eye, also known as visible light, there is visible light there is invisible light, if the spectrum is distinguished by technical means, the spectrum is decomposed and arranged by wavelength, you can get invisible light such as infrared, ultraviolet, X-ray, microwave, etc. Therefore, we can use the invisible light fingerprint information presented on different objects to develop a spectrometer, analyze it and control some characteristics, this technology is currently widely used in agricultural production, semiconductor industry, atmospheric environment, ecological environment, food safety, medical technology, component detection, smelting and chemical industry, public security investigation and other fields.
The field of spectrometers is divided into two categories, one is emission spectroscopy, the other is absorption spectroscopy, and a variety of spectrometers with different use scenarios can be subdivided, which will not be repeated here.
Emission spectroscopy:
The energy of substances absorbing flames, arcs, sparks, and light signals may be excited to emit light, and because different substances must have different material structures, the light emitted by objects must also have different spectral characteristics.
Absorption spectroscopy:
This is very different from the emission type in that the spectral energy absorbed by this method for the particularity of the structure of the object itself is also different, so this signal can be collected and transmitted to the instrument to obtain analysis results.
In summary, we can choose the spectrometer for the appropriate scene according to different needs.
From the currently available data, the structural composition of the spectrometer is generally composed of an optical platform and a detection system.
1. Incident slit: The point of object that forms the spectrometer imaging system under the irradiation of incident light.
2. Collimation element: Turns the light emitted by the slit into a directional light. The collimating element may be a separate lens, mirror, or directly integrated on a dispersive element, such as a concave grating in a concave grating spectrometer.
3. Dispersive elements: Gratings are usually used to make the optical signal spatially dispersed into multiple beams according to wavelength.
4. Focusing element: Focus the dispersed beam so that it forms a series of images with incident slits in the focal plane, where each image point corresponds to a specific wavelength.
5. Detector array: placed in the focal plane to measure the light intensity of each wavelength image point. The detector array can be a CCD array or another type of light detector array.
Our company as the main optical equipment enterprises, in the field of spectral analysis is also effective, by our independent research and development, production, manufacturing of online absorption spectrometer is about to be on the market, its installation method is pipeline in-situ installation, the main application scenario is manufacturing, more parameters and application details of Chu national online spectrometer can continue to pay attention to the subsequent release.
Post time: Oct-14-2022