Integrated wide-spectrum double-view-field off-axis optical system sharing secondary mirror

An optical system, integrated technology, applied in optics, optical components, instruments, etc., can solve the problems of poor adjustment stability, limited system field of view, etc., to achieve the effect of easy adjustment, simple structure, and solve limitations

Pending Publication Date: 2022-01-07
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] At present, in the existing off-axis space optical imaging system, only the off-axis two-mirror and off-axis three-mirror are studied separately. The off-axis two-mirror system limits the field of view of the system. Compared with the off-axis three-mirror system The adjustment stability of the two-anti system is poor

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  • Integrated wide-spectrum double-view-field off-axis optical system sharing secondary mirror
  • Integrated wide-spectrum double-view-field off-axis optical system sharing secondary mirror
  • Integrated wide-spectrum double-view-field off-axis optical system sharing secondary mirror

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Embodiment Construction

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is some embodiments of the present invention, but not all of them. The embodiments based on the present invention all belong to the scope of protection of the present invention, but only represent selected embodiments of the present invention. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] see first image 3 , image 3 It is a schematic diagram of a wide-spectrum dual-field off-axis optical system with an integrated shared s...

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Abstract

The invention provides an integrated wide-spectrum double-view-field off-axis optical system sharing a secondary mirror, which can be used for carrying out wide-spectrum double-view-field imaging on a space target. The system comprises an off-axis primary mirror, an integrated composite secondary mirror and an off-axis three-mirror system. According to the optical system, two sets of off-axis optical systems with different view fields are formed by sharing a secondary mirror, and after wide-spectrum light enters the off-axis primary mirror, ultraviolet-band light is reflected by the front surface of the secondary mirror to form an off-axis two-mirror optical system with a small view field; and visible light and infrared band light are transmitted through the rear surface of the secondary mirror to form a large-view-field equivalent off-axis three-mirror optical system, and therefore wide-spectrum double-view-field switching tracking imaging of a space target is achieved.

Description

technical field [0001] The invention relates to the technical field of space optical imaging, in particular to an integrated wide-spectrum dual-view field off-axis optical system sharing a secondary mirror. Background technique [0002] Compared with the coaxial optical system, the center of the off-axis optical system is unobstructed, which can avoid the loss of central energy, and can also fold the optical path to make the optical system more compact and save space costs. The optical system composed of two mirrors has very important use value. Conventional Cassegrain system and Gregory system and other conventional coaxial mirrors have two serious disadvantages. One is the small field of view, and It has a central occlusion, which has a greater impact on the utilization of energy within the aperture and the concentration of light energy at the image point. The off-axis two-mirror optical system can solve the problem of central occlusion, but the field of view of the off-a...

Claims

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Application Information

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IPC IPC(8): G02B17/06G02B1/11G02B27/00
CPCG02B17/0626G02B1/11G02B27/0012Y02A90/10
Inventor 杨智焜彭起侯智芸包奇红熊江茗
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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