Imaging uniformity testing device for large-aperture low light level image intensifier

Abstract

The invention provides an imaging uniformity testing device for a large-aperture low light level image intensifier. The device comprises a testing camera obscura, a three-dimensional adjustment platform, a camera, an integrating sphere system, a turntable device, a stopper and a large-range illuminance variable light source, wherein a light output hole, a rotating shaft vent hole and a spacing hole are formed in the bottom of the testing camera obscura; the three-dimensional adjustment platform is arranged at the bottom of the testing camera osbcura; the camera is arranged on the three-dimensional adjustment platform and is driven by the three-dimensional adjustment platform to move in the space; the light output hole of the large-range illuminance variable light source is connected with a light input hole of an integrator, and two self-tightening replaceable diaphragms and an aperture variable weak light target are arranged on the light path emitted by the large-range illuminance variable light source; and the turntable device comprises a rotating shaft, a turntable and a plurality of light output sleeves with different diameters, the turntable shaft is rotated to drive the turntable to rotate, so that different light output sleeves are sequentially positioned above the light output hole of the integrating sphere system, and the stopper is arranged in the corresponding spacing groove.

Description

Technical field [0001] The invention relates to a low-light test technology, in particular to a large-aperture low-light image intensifier imaging uniformity test device. Background technique [0002] Compared with ordinary low-light image intensifiers, large-aperture low-light image intensifiers can provide the advantage of a larger field of view, which is of great significance in the development of low-light night vision. The imaging uniformity of the large-aperture low-light image intensifier is the main parameter to evaluate the imaging of the fluorescent screen of the large-aperture low-light image intensifier. [0003] In China, some units have carried out research work on the imaging performance parameters of low-light-level image intensifiers, but they have not established standards for the imaging performance parameters of large-aperture low-light-level image intensifiers, and there is no information about uniform imaging of large-aperture low-light-level image intensifier...

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Problems solved by technology

[0003] In China, some units have carried out research work on the imaging performance parameters of low-light image intensifiers, but no standards have been established for the imaging performance parameters of large-aperture low-light image intensifiers, and there is no information about the imaging uniformity of large-aperture low-light image intensifiers. Related literature on sex tester

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