Novel high resolution large visual field optical imaging system

Abstract

A novel high resolution large visual field optical imaging system is composed of a share primary mirror, a microlens array and a detector array. The share primary mirror is in a holocentric spherical mirror structure, and the center of the share primary mirror is a spherical mirror. Two meniscus lenses are wrapped on two sides of the share primary mirror, and incident rays respectively pass through the share primary mirror and the microlens array, and finally reach the detector array for imaging. Through the computed imaging technology, image restoration is carried out on every sub-image (eliminating impact of spherical difference on image quality), and all sub-images are subjected to registration recombination to obtain a complete clear image. The novel high resolution large visual field optical imaging system is simple in structural type, and the visual field can reach 180 degrees in theory. The full visual field has a uniform resolution ratio, and combines with the computed image post processing technology, the systematic resolution ratio can be close to a diffraction limit in theory. The novel high resolution large visual field optical imaging system has the advantages of having an extra large visual field, a high resolution ratio, and the like, and particularly suitable for researching and finding of space targets in a wide range, air monitoring for a stratosphere, and the like.

Description

technical field [0001] The invention belongs to the technical field of aerospace optical remote sensors, and relates to an optical imaging system with a large field of view, high resolution and low structural complexity based on computational imaging technology. Background technique [0002] With the continuous enhancement of human beings' ability to enter space and use space, human beings have gone through the stage of entering space-using space-monitoring space, and are entering the era of space control. With the development of modern warfare, the demand for high-resolution, large-field-of-view stratospheric aerial surveillance systems and space-based large-scale target search systems is becoming more and more urgent. However, traditional large-field-of-view systems can no longer meet such requirements. . [0003] Traditional large field of view optical systems mainly include small field of view high-resolution scanning imaging, fisheye lens super hemispherical staring im...

AI Technical Summary

Problems solved by technology

However, they all have their own shortcomings. The high-resolution scanning imaging of the small field of view must have a complex scanning mechanism, which directly leads to the reduction of the real-time performance of the system and greatly reduces the reliability of the system; although the fisheye lens can achieve more than 180 ° large field of view imaging, but there is a large distortion in the peripheral field of view, the illumination of the peripheral field of view is low, and the entire image surface cannot form a consistent resolution; the ring-shaped staring imaging system surrounds the 360° range of the optical axis of the optical system The cylindrical field of view is projected into an annular area on a two-dimensional plane. Although it can realize the panoramic real-time imaging of the 360° annular space, it can only image the annular field of view. There is a central blind spot in the imaging system, and the stray light of the system Seriously, the resolution is greatly reduced

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