A large field of view high resolution imaging device

Abstract

The invention discloses a large-field-of-view high-resolution imaging device, which includes: an imaging array and a CsI fluorescent screen formed by splicing and combining multiple imaging units, wherein each imaging unit is coupled by a series light cone column and an enhanced CCD The series of light cones is used to transmit optical signals, and is formed by connecting large light cones and small light cones in series. The small end faces of the large light cones are connected in series with the large end faces of the small light cones. The end face is bonded to the CsI fluorescent screen; the small end face of the small light cone is used as the input window of the image intensifier; the enhanced CCD is formed by coupling the image intensifier and the CCD camera; the image intensifier is used to increase detection efficiency and improve Image brightness and contrast; the CCD camera is used to convert light signals into electrical signals, and store imaging information in the form of digital signals, and the photosensitive screen of the CCD camera is used as the output window of the image intensifier. By adopting the invention, the imaging field of view can be expanded, image distortion can be reduced, and image resolution can be improved.

Description

technical field [0001] The invention relates to the technical field of image capture and processing, in particular to a large-field-of-view high-resolution imaging device. Background technique [0002] In the prior art, an imaging mode in which large light cones are directly coupled to a camera is generally adopted, and the large light cones are arranged into a light cone array to realize large field of view imaging. [0003] However, due to the large area of ​​the large end of the light cone and the small area of ​​the small end, the light cone ratio is relatively large, and the monofilament skin at the edge is too thin, which causes light leakage and reduces the overall light transmittance of the light cone. Moreover, the taper of the light cone is relatively large, resulting in different elongation of the edge monofilament and the central monofilament, resulting in geometric distortion of the image. [0004] Moreover, when cesium iodide (CsI) is selected as the fluoresce...

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Problems solved by technology

[0005] From the above, it can be confirmed that although the imaging method of the prior art light cone array directly coupled with the camera mode can obtain a certain resolution, the cone ratio of the light cone is large, the light transmittance is low, and the image is prone to geometric distortion.

Although a thinner X-ray fluorescent screen can be made on the light cone array to obtain higher resolution, the fluorescence transmittance is reduced, and the brightness and contrast of the image are reduced.

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