Visible light near-infrared close-range depth-of-field extension imaging system

Abstract

The invention discloses a visible light near-infrared close-range depth-of-field extension imaging system, and belongs to the technical field of optical imaging detection. The system comprises a short-focus main lens, an electrically-controlled liquid crystal micro-optical structure, an area array photosensitive detector, a driving control module and a processing module, wherein the short-focus main lens is used for carrying out primary compression imaging on a distant object; the driving control module provides voltage signals for driving and regulation for the area array photosensitive detector and the electrically-controlled liquid crystal micro-optical structure; the electrically-controlled liquid crystal micro-optical structure is used for discretizing and arranging target light beams in different directions and converging the target light beams on photosensitive elements; the area array photosensitive detector converts a characteristic light beam incident on the photosensitive elements into an electric signal; and the processing module carries out quantification processing on the electric signals from the photosensitive elements to obtain sequence sub-image data containing three-dimensional space information. According to the visible light near-infrared close-range depth-of-field extension imaging system, the electric signal-target depth relation is established, so that electric control chromatography imaging is carried out, and the depth of field is further expanded.

Description

Technical field [0001] The present invention belongs to the technical field of optical imaging probe, and more specifically, close near infrared imaging system relates to an extended depth of field of the visible light. Background technique [0002] Since the birth of human civilization, exploration and perception of the world is the eternal pursuit of this process is inseparable from the imaging device and imaging system. Depth of field, the imaging system refers to the leading edge can be acquired before and after the distance range determined subject imaged clear images. After the focusing is completed, a clear image can be formed in a range of acceptable focus, the distance after it is called a front depth; when the scene is captured for optimal imaging plane, the scene in front of the subject range is called clear foreground depth, is called the depth of field range of acceptable back; Prospects deep depth of field together with the called panoramic deep. [0003] In order t...

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Problems solved by technology

[0004] In view of the defects of related technologies, the purpose of the present invention is to provide a visible light near-infrared short-range depth-of-field expansion imaging system, aiming to solve the problem of insufficient depth-of-field of the short-range imaging system

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