Dynamic Local Magnification High Resolution Imaging System
A local amplification and imaging system technology, which is applied in the fields of optical instruments, video surveillance, early warning detection and battlefield investigation, can solve the problems of high cost and complex structure of high-resolution imaging systems
Active Publication Date: 2021-04-20
BEIJING INSTITUTE OF TECHNOLOGYGY
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[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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[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments, but the protection scope of the present invention cannot be limited by the data of the embodiments.
[0033] example figure 2 As shown, the present invention can be widely used in the fields of video surveillance, early warning detection, and battlefield reconnaissance that require large field of view target detection, identification and tracking.
[0034] like figure 2 As shown in the figure, the dynamic partial magnification high-resolution imaging system of the present invention includes: an imaging objective lens, a primary image plane, a flat glass, a small-diameter partial magnifying lens group, a relay relay mirror group, a transmissive liquid crystal spatial light modulator (SLM), and a detector. On the image plane of the device, in the direction of light propagation, the components are arranged in order.
[0035] The system aperture diaphragm d...
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Abstract
The invention discloses a dynamic partial magnification high-resolution imaging system, which belongs to the technical field of optical instruments. It solves the contradiction between the large field of view and high-resolution imaging of the existing optical imaging system for long-distance target detection, as well as the technical problems of complex system structure and high cost. The system includes an imaging objective lens, a small-aperture local magnifier group, a relay image transfer mirror group, a transmissive liquid crystal spatial light modulator (SLM) and a detector image plane, in which the small-aperture local magnifier group and the transmissive liquid crystal spatial light modulator ( SLM) is used to achieve local area magnification and high-resolution imaging. In the present invention, a small-diameter partial magnifying lens group is placed near the position of the intermediate image plane, through the two-dimensional scanning of the small-diameter partial magnifying lens group in the x and y directions, a dynamic partial magnification of different positions of the image plane is realized once, and after passing through the relay lens group, Local enlarged images at different positions are obtained on the image plane of the detector, the system structure is simple, the cost is low, and dynamic local enlargement in a large field of view 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 particularly suitable for the fields of video surveillance, early warning detection, battlefield reconnaissance and the like. Background technique [0002] In the 21st century, in the field of optical detection of target detection, identification and tracking, the requirements for the optical system are getting higher and higher. Local high-resolution imaging capability. In order to meet the detection of the target with a large field of view and high-resolution imaging with a small field of view, the traditional optical solution is to use a zoom optical system, which mainly includes mechanical zoom and active zoom. However, the mechanical zoom system achieves zoom by changing the distance between optical elements or optical element groups, and keeps the image plane unchanged. This zoom...
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IPC IPC(8): G02B27/00G02B27/58G02F1/13
Inventor 常军沈本兰牛亚军
Owner BEIJING INSTITUTE OF TECHNOLOGYGY