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What are the basic knowledge of filter grids?

The filter grate is also called the filter plate and the filter grate plate.
The filter grating is made of many very thin lead bars and internal spacers alternately arranged and bonded to form a flat plate.
The filter grating should be placed between the human body and the film to filter out the effect of scattered rays on the film.
At present, the filter grating is used for camera racks, cameras, and image intensifiers. It is square on camera racks and cameras, and circular at the input end of image intensifier. (The focal length of the frame is 1.8 meters, and the deviation of focal length +20CM is within the normal range on X-ray machine tools or on shadow increments of 1, 1.1, 1.2, 1.3 and 1.5 meters.)

A little scratch or deformation of the filter grate will affect its normal use. Only scrap treatment can be done if it is slightly severe. Therefore, in the process of transportation and storage, it must be carefully and lightly placed, and can only be placed horizontally or vertically.
At present, the sizes of filter grids are determined according to their sizes, such as 6 *8, 9 *11, and 240.


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