Visible light and short-wave infrared dual-waveband common-aperture long-focus optical system

Abstract

The invention relates to a visible light and short-wave infrared dual-waveband common-aperture long-focus optical system, which comprises a public mirror group A, a beam splitting prism B, a visible light mirror group C and a short-wave infrared mirror group D. The public mirror group A and the beam splitting prism B are arranged from left to right along an incident light path, incident light fromthe public mirror group A is divided into two ways through the beam splitting prism B, the two ways of light paths are imaged through the visible light mirror group C and the short-wave infrared mirror group D, and a visible light path is formed by the public mirror group A, the beam splitting prism B and the visible light mirror group C; and a short-wave infrared light path is formed by the public mirror group A, the beam splitting prism B and the short-wave infrared mirror group D. The optical system is compact in structure, a target can be simultaneously subjected to visible light and short-wave infrared dual-waveband imaging, the two waveband light paths have the same relative aperture and focal length, and all-weather long-range target high-resolution imaging can be achieved.

Description

Technical field: [0001] The invention belongs to the field of optoelectronic technology, and in particular relates to a visible light and short-wave infrared dual-band common-aperture telephoto optical system. Background technique: [0002] Aerial reconnaissance is an important part of military reconnaissance. It can obtain wide-front and large-depth intelligence in a short period of time. Airborne photoelectric equipment performs imaging reconnaissance on the ground and sea, which plays an important role in the search, identification and tracking of targets. With the development of various camouflage technologies, the difficulty of target reconnaissance and identification also increases, and single-band imaging reconnaissance is gradually difficult to meet the complex battlefield environment. In order to meet different environments and achieve all-weather reconnaissance, visible light and infrared dual-band optical systems are generally used at present. [0003] Visible li...

AI Technical Summary

Problems solved by technology

[0003] Visible light imaging technology is mature and can achieve high-resolution detection, but it is easily affected by bad weather and is not suitable for weak light environments such as night; infrared thermal imaging technology uses the infrared radiation characteristics of the detected target to identify targets, which is anti-interference, It has the advantages of all-weather detection, but its imaging picture is an infrared radiation image, which is quite different from the visual experience of the human eye, which is easy to affect the recognition of the target, and most of the infrared materials are expensive, and the infrared detector needs to be cooled, which makes the overall size of the system smaller. Big

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