Double-view-field infrared optical system including aspheric surface fairing
An infrared optical system and aspheric technology, applied in the field of optical instruments, can solve the problems of single field of view and complex structure of the system, and achieve the effects of compact system volume, simple system structure and reduced system length
Inactive Publication Date: 2014-04-09
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
[0005] The purpose of the present invention is to solve the problem of single field of view and complex structure of the system under the condition of an aspheric fairing, and propose a dual-field infrared optical system with an aspheric fairing
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[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0022] Example figure 1 As shown, the present invention will be mainly applied to dual-scan field infrared focal plane imaging. It can be widely used in modern investigation, rescue and other fields.
[0023] Such as figure 1 As shown, a dual-field infrared optical system containing an aspheric fairing of the present invention includes a rotationally symmetrical aspheric fairing (1), an aspheric correction lens group (2), a fixed lens group (3), and a moving lens The group (4), the position of the cold diaphragm (5) and the image plane of the detector (6); in the direction of light propagation, the above optical elements are sequentially arranged coaxially in sequence.
[0024] In the embodiment, the infrared radiation emitted by the target at infinity passes through the above optical elements sequentially and then irradiates onto the detector elem...
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The invention relates to a double-view-field infrared optical system including an aspheric surface fairing, belonging to the technical field of optical instruments. The system provided by the invention comprises a rotary and symmetrical aspheric surface fairing, a double-view-field optical imaging system and two groups of detector image surfaces. In the system, the special aspheric surface fairing which accords with the fluid dynamics is adopted so that the system has a good fluid dynamics performance; and a stepping zooming optical imaging system is utilized to respectively image a tracking view field and a searching view field. The system provided by the invention satisfies the requirements on the characteristics of the medium dynamics, has the advantages of good imaging quality, light weight, simple structure and single moving member, can realize the searching view field of 20 DEG and the tracking view field of 10 DEG, has a high false alarm prevention capability and high flexibility, and can be widely applied to the fields of investigating, rescuing and the like.
Description
technical field [0001] The invention belongs to the technical field of optical instruments, and relates to a double-field infrared optical system with an aspheric dome, which is especially suitable for searching and tracking infrared focal plane imaging. Background technique [0002] Infrared imaging technology plays an increasingly prominent role in modern investigation and rescue. As an imaging component, the optical fairing of the thruster seeker needs to meet the requirements of low hydrodynamic resistance while meeting the image quality requirements of the optical detection system. The outer surface of the rotationally symmetrical aspheric optical dome has a sharper arched shape, which can better meet the requirements of the dynamic performance of the medium. However, when the optical system behind the fairing performs tracking and scanning imaging on a certain range of field of view, since the surface of the fairing participating in the imaging is aspheric, various ab...
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IPC IPC(8): G02B27/00
Inventor 常军宋大林曹娇谭羽王蕊瑞彭晴晴魏阿满温耀
Owner BEIJING INSTITUTE OF TECHNOLOGYGY