A visible-medium-wave infrared dual-band common-aperture optical system

An optical system, visible light technology, applied in optics, optical components, instruments, etc., can solve the problems of heavy weight and large imaging system, and achieve the effect of reducing system aberration, high imaging quality, and improving imaging performance

Active Publication Date: 2021-08-17
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] In order to solve the existing dual-band imaging system, because the two bands are independent systems, resulting in the technical problems of large volume and heavy weight of the overall imaging system, the present invention provides a visible-medium-wave infrared dual-band common-aperture optical system

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  • A visible-medium-wave infrared dual-band common-aperture optical system
  • A visible-medium-wave infrared dual-band common-aperture optical system
  • A visible-medium-wave infrared dual-band common-aperture optical system

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[0071] The content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0072] Such as figure 1 As shown, the visible light-medium-wave infrared dual-band common-aperture optical system includes a main reflector 01, a spectroscopic element 02, a visible light sub-system and a mid-wave infrared sub-system; the target light is reflected by the main reflector 01 to the spectroscopic element 02, and the spectroscopic element 02 is used to split the light into two beams, namely the visible light beam and the mid-wave infrared beam, and enter the visible light sub-system and the mid-wave infrared sub-system respectively. The visible light sub-system and the mid-wave infrared sub-system share the main reflector 01, the main reflector 01, the light splitting element 02 and the visible light sub-system constitute a visible light optical system, such as figure 2 and image 3 As shown; the main ref...

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Abstract

The invention provides a visible-medium-wave infrared dual-band common-aperture optical system, which solves the problems of the existing dual-band imaging system with large volume and heavy weight. The system includes a main reflector, a spectroscopic element, a visible light sub-system and a mid-wave infrared sub-system; the target light is reflected by the main reflector to the spectroscopic element, and the spectroscopic element is used to split the light into two paths, which enter the visible light sub-system and the mid-wave infrared sub-system respectively. The wave infrared subsystem; the visible light subsystem includes the first refraction mirror, the second refraction mirror, the primary image correction mirror group, the collimator mirror group and the objective lens group arranged sequentially along the optical path; the mid-wave infrared subsystem includes the A mid-wave infrared correction mirror group, a fourth refracting mirror and a projection mirror group are provided in sequence. By sharing the main reflector and the sub-reflector, the visible light sub-system and the mid-wave infrared sub-system are divided into two paths, each of which is independently and synchronously imaged. This dual-band lens has high imaging quality and fully meets the system's requirements for target detection and imaging needs.

Description

technical field [0001] The invention relates to multi-band photoelectric imaging technology, in particular to a visible light-medium-wave infrared dual-band common-aperture optical system suitable for long-distance multi-spectral capture and tracking measurement in ground shooting ranges. Background technique [0002] With the continuous development of optoelectronic technology, the index requirements of shooting range measurement tasks are also getting higher and higher, and lightweight, generalization, modularization, high resolution, and all-day work have become the development direction. In order to achieve the characteristics of high resolution and all-day work, two imaging systems are usually designed independently to meet specific bands. Although they can meet the requirements of the measurement task, it will inevitably lead to the disadvantages of large volume and heavy weight of the system, especially for Medium and large aperture optical imaging system for long-dis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B17/08
CPCG02B17/0804
Inventor 刘凯高昕段晶刘锋姜凯闫佩佩单秋莎
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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