Large-view-field super-resolution imaging system adjustable in resolution

Abstract

The invention relates to a large-view-field super-resolution imaging system adjustable in resolution, and belongs to the technical field of optical imaging. The large-view-field super-resolution imaging system is characterized in that scanning and light deflection are firstly carried out on a target at an infinite point by rotating optical wedges to enable a target light beam to enter a follow super-resolution imaging system body at a small angle, super-resolution focusing is achieved, image fusing and image rebuilding are finally carried out on all super-resolution focal spots according to the scanning mode of a rotating optical wedge pair, and a super-resolution image of the target is obtained. In the large-view-field super-resolution imaging system, the super-resolution system body is formed by a substrate optical system and a super-resolution pupil filter, a LC SLM is used as the super-resolution pupil filter, the phase distribution of the light beam can be dynamically modulated in real time, and then the imaging resolution of a local area of the target can be changed according to requirements. The large-view-field super-resolution imaging system is simple in structure, and resolution-adjustable large-view-field super-resolution imaging of the target at the far point can be achieved.

Description

technical field [0001] The invention belongs to the technical field of optical imaging, and relates to a large field of view super-resolution imaging system with adjustable resolution, which can be widely used in fields such as investigation and rescue. Background technique [0002] In recent years, research on new optical instruments and their resolution has become a hot spot in the field of optics worldwide. Whether it is in the military field or the civilian field, more and higher requirements are put forward for the resolution of the optical imaging system. As a cutting-edge research topic in the field of optical engineering, optical super-resolution technology breaks the traditional diffraction limit, enabling people to resolve details beyond the diffraction limit on the basis of a simpler optical system. From the early 20th century to the present, various methods for obtaining optical super-resolution have been proposed. These super-resolution techniques are widely u...

AI Technical Summary

Problems solved by technology

[0010] However, pupil filtering technology is a point-to-point super-resolution imaging technology, and the increase in side lobe intensity is a technical defect that pupil filtering technology cannot avoid.

Therefore, when the pupil filtering technology is directly used for large-scale imaging of the target, the imaging quality will be degraded and the resolution will be reduced.

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