A common-aperture composite optical system for visible light and mid-wave infrared

Abstract

The invention discloses a visible light and medium wave infrared common-caliber composite optical system. The system comprises four parts, namely a common transmission system (100), a beam splitter prism group (200), a visible light path correcting system (300) and an infrared light path correcting system (400). The system covers two wave bands of the visible wave band and the medium wave infraredband, and can work in the daytime and at night respectively. Therefore, the imaging at a large view field and all day long can be realized. Compared with a traditional split structure, the system hasthe advantages of compact structure, good co-axial consistency, high pointing precision, small volume and light weight. Compared with a novel common-caliber folding and reflecting structure, the system has the advantages of large visual field, easy and convenient installation and adjustment, and the like. The system can realize the wide-area and all-day-time monitoring effect for a target area, and the performance of photoelectric reconnaissance equipment is effectively improved.

Description

technical field [0001] The invention belongs to the field of optical technology, and relates to a visible light and mid-wave infrared co-aperture composite optical system. Background technique [0002] At present, the smart airborne pod has attracted much attention in the aviation field because of its advantages of flexibility and convenience. By investigating the research status of airborne pods at home and abroad, it can be seen that the development momentum of smart aviation airborne pods is strong, and they are constantly pursuing wide coverage, long-distance and all-weather imaging. At the same time, the reduction of volume and weight means the increase of flight speed and distance. Therefore, under the premise of satisfying the imaging quality, the optical system with small size and compact structure has become a research hotspot. [0003] At present, the smart airborne pod developed by our country has a single imaging band and a narrow coverage of reconnaissance imag...

AI Technical Summary

Problems solved by technology

After investigation, most of the current dual-band common-aperture optical systems adopt the catadioptric structure, which has the advantage of being conducive to the integration of visible light and infrared bands, but the disadvantage is that the system has a small field of view and is difficult to install and adjust.

For example, "Applied Optics" reported in the fourth issue of 2010 that Cai Zhanen and others designed a large field of view and large relative aperture dual-band R-C optical system. The field of view is only ±2.5°, which is difficult to meet the needs of wide-area reconnaissance. At the same time, due to the catadioptric structure, the system is difficult to install and adjust, and the reliability is not high

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