General principle: the X ray is first converted into visible light by the fluorescent medium material, and then converted into electrical signal by the photosensitive element, and finally converted into digital signal by the analog electrical signal through AD.
1. Before the X-ray detector is exposed, the silicon surface is first charged with a uniform charge by storing cations, which leads to the generation of electron field on the silicon surface;
2. During the exposure, electron hole pairs are generated in silicon, and free electrons are free to the surface, resulting in potential charge images on the silicon surface. The charge density at each point is equivalent to the local line intensity.
3. After exposure, the X-ray image is stored in each pixel;
4. The semiconductor converter reads each element to complete the analog-to-digital conversion.
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Author:Glinda
Tel:+86 18953679166
Email:service@newheek.com
Company:Weifang Newheek Electronic Tech Co., Ltd.