Direct-view low-light-level stereoscopic imaging night-vision device

Abstract

The invention discloses a direct-view low-light stereoscopic imaging night vision device, which mainly solves the problem that the existing direct-view low-light imager cannot provide a three-dimensional low-light image with a sense of depth and layering. It comprises an objective optical system (31), a photocathode (37), a microchannel plate (38), a fluorescent panel (39) and an eyepiece system (34) with 180° twisted image characteristics, and the front end of the objective optical system (31) There is a recording zoom lens array (30), and a reconstruction zoom lens array (33) is placed at the rear end of the fluorescent panel (39) to form a multi-view imaging system structure composed of a double zoom lens array; the fluorescent panel (39) is placed on the reconstruction At the position of the focal plane of the zoom microlens array (33), and within the spatial range of each corresponding lens unit of the reconstructed zoom lens array (33), the reversible correction of the depth of the low-light stereoscopic image is realized. The invention has the advantages of wide stereoscopic imaging depth of field, stereo / two-dimensional imaging mode switching, and observation depth of field reversal correction, and can be used in night vision, medical imaging, underwater imaging, darkroom measurement and other fields.

Description

technical field [0001] The invention belongs to the field of imaging technology, and in particular relates to a direct-view low-light three-dimensional imaging night vision device, which can be used in night vision, medical imaging, underwater imaging, darkroom measurement and other fields. Background technique [0002] The direct-view low-light imaging system is a photoelectric imaging system using light enhancement technology. It can greatly improve the visual performance of the human eye in low light. Since the system can operate under extremely low illuminance (10 -6 lx~10 -1 lx) works completely "passively", so it has been rapidly developed and widely used in night vision, medical imaging, underwater imaging, photon imaging and other fields. The traditional direct-view low-light imaging system is mainly composed of three parts: the objective optical system, the low-light image intensifier, and the eyepiece system, such as figure 1 As shown, its working principle is:...

AI Technical Summary

Problems solved by technology

However, the reconstructed stereoscopic image has a depth reversal relative to the human eye observation target, and cannot reverse the observer's depth observation effect on the real physical world

In addition, it is difficult for a lens array with a fixed focal length to ensure high-resolution images in a large depth of field.

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