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Optical system of common-aperture camera based on germanium mirror three-path light splitting

An optical system, common aperture technology, applied in the field of space optics, can solve problems such as single structure and inability to meet the needs of multi-source detection

Active Publication Date: 2021-12-24
WUHAN UNIV +1
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  • Application Information

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Problems solved by technology

[0004] The present invention solves the problem that the spatial optical imaging system in the prior art has a single structure and cannot meet the needs of multi-source detection by providing an optical system based on a germanium mirror three-way beam-splitting common-aperture camera

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  • Optical system of common-aperture camera based on germanium mirror three-path light splitting
  • Optical system of common-aperture camera based on germanium mirror three-path light splitting
  • Optical system of common-aperture camera based on germanium mirror three-path light splitting

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Embodiment Construction

[0035] In order to better understand the above-mentioned technical solution, the above-mentioned technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] The present invention provides an optical system based on a germanium mirror three-way beam splitting common-aperture camera, see figure 1 , image 3 , Figure 6, the entire optical system is a catadioptric optical path structure, with the main reflector as the aperture stop of the co-aperture camera, the germanium mirror is coaxially arranged with the main reflector, and the germanium mirror is arranged on the reflection of the main reflector On the optical path, the germanium mirror is coated with a 450-900nm high-reflection film, and the reflectivity of the high-reflection film reaches more than 98.5%. The first light splitting is realized through the germanium mirror, and the long-wave infrared optical path 1 and the visible light ban...

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Abstract

The invention belongs to the technical field of space optics, and discloses an optical system of a common-aperture camera based on germanium mirror three-path light splitting. The invention relates to a multiband catadioptric optical system based on an ultra-large common caliber, and the system is a distortion-eliminating space optical system which is used in a split view field and a split light path and integrates a reflection type structure and a transmission type structure, and can meet the requirements of optical remote sensing spacecrafts for hyperspectrum, high resolution, all-day, multi-source detection, high-precision three-dimensional surveying and mapping and the like. The problems that an existing space optical system is single in structure, different imaging channels have different requirements for the space optical system, the relative aperture and the like, the implementation cost is high, and day and night observation cannot be carried out can be solved.

Description

technical field [0001] The invention belongs to the technical field of space optics, and more specifically relates to an optical system of a common-aperture camera based on a three-way beam splitting of a germanium mirror. Background technique [0002] Aerospace remote sensors are developing in the direction of high spatial resolution, high spectral resolution, low-light night vision, and large width. High resolution and large width have prompted the design of optical cameras to develop towards longer focal lengths and larger apertures. [0003] With the increasing complexity of the target and the background, limited by the light conditions and the sensitivity of the detector, the traditional optical camera cannot effectively detect the target in low-light and low-light conditions at night. Single-band imaging systems usually can only obtain a single piece of information and have low anti-interference ability. The traditional space-borne optical imaging system can no longe...

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Application Information

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IPC IPC(8): G02B17/08
CPCG02B17/0836
Inventor 龚健雅金光岳炜徐伟杨秀彬王心宇
Owner WUHAN UNIV