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

A super-resolution imaging and resolution technology, applied in the fields of rescue, investigation, and optical imaging, can solve problems such as degradation of imaging quality, reduction of resolution, and increase of side lobe strength, and achieve simple and compact structure, high scanning accuracy, and overcoming side lobe Effect of increased flap strength

CN104570383AInactive Publication Date: 2015-04-29BEIJING INSTITUTE OF TECHNOLOGYGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-04-29
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

Examples

Embodiment Construction

[0033] The present invention will be further described below in conjunction with drawings and embodiments.

[0034] Such as figure 1 As shown, a large field of view super-resolution imaging system with adjustable resolution of the present invention includes a rotating optical wedge pair (1), a super-resolution imaging system (2), and a high-resolution detector (3). Wherein, the super-resolution imaging system (2) is composed of a super-resolution pupil filter (21) and a base optical system (22).

[0035] In an embodiment, the rotating optical wedge pair such as image 3 As shown, the inclination angle is 12°, the central thickness is 7.5mm, and the scanning range of the field of view can reach 18°×18°, and the wedge pair undertakes most of the light deflection, so that the surface of the super-resolution pupil filter The incident angle does not exceed 6°, which is very meaningful in practical applications.

[0036] In an embodiment, the super-resolution imaging system such...