Dynamic local amplification high resolution imaging system

Abstract

The invention discloses a dynamic local amplification high resolution imaging system, belongs to the technical field of an optical apparatus and solves technical problems of conflicts between a largeview field of long-distance target detection and high resolution imaging, the complex system structure and relatively high cost existing in an optical imaging system in the prior art. The system comprises an imaging object lens, a small aperture local magnifying lens group, a relay image rotation lens set, a transmission type liquid crystal spatial light modulator (SLM) and a detector image plane,wherein the small aperture local magnifying lens group and the transmission type liquid crystal spatial light modulator (SLM) are used for realizing local area amplification and high resolution imaging. The system is advantaged in that the small aperture local magnifying lens group is arranged near the intermediate image plane position, two-dimensional scanning in the x and y directions is carried out through the small aperture local magnifying lens group, one-time image plane different position dynamic local amplification is realized, through the relay lens set, local amplification images atdifferent positions are acquired on the detector image plane, the system structure is simple, cost is low, and dynamic local amplification in the large view field scope can be realized.

Description

technical field [0001] The invention belongs to the technical field of optical instruments, and in particular relates to a dynamic local magnification high-resolution imaging system, which is especially suitable for the fields of video monitoring, early warning detection, battlefield investigation and the like. Background technique [0002] In the 21st century, in the field of optical detection of target detection, recognition and tracking, the requirements for optical systems are getting higher and higher. It is required that the system not only has a large field of view global imaging capability for the detection target, but also requires the system to have the ability to detect the details of the target. Local high-resolution imaging capability. In order to meet the large field of view detection and small field of view high-resolution imaging of the target, the traditional optical solution is to use a zoom optical system, mainly in two ways: mechanical zoom and active zoo...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problems of existing optical imaging systems such as the large field of view and high-resolution imaging for long-distance target detection and the technical problems of complex system structure and high cost, the present invention provides a dynamic local zoom-in high-resolution imaging system. The optical system adopts A simple small-aperture magnifying lens group and a transmissive liquid crystal spatial light modulator (SLM) can achieve the goal of optical partial magnification and high-resolution imaging

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