Temperature control cover of space optical reflecting mirror

A technology of optical mirrors and space optics, applied in optics, optical components, temperature control, etc., can solve problems such as reduced shooting accuracy, insufficient temperature control accuracy, and mirror deformation, achieving reduced deformation, reduced deformation, Consistent heat transfer rate effect

Active Publication Date: 2019-10-25
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The object of the present invention is to provide a thermal control device for a space optical mirror, which aims to solve the problems in the prior art that the temperature control accuracy of the thermal control device is insufficient and the heating range is small, which leads to local deformation of the mirror and reduces the shooting accuracy.

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  • Temperature control cover of space optical reflecting mirror
  • Temperature control cover of space optical reflecting mirror
  • Temperature control cover of space optical reflecting mirror

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or there may be an intervening element at the same time. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

[0021] In addition, it should be noted that the orientation terms such as left, right, up, and down in the embodiments of the present invention are only relative concepts or refer to the normal use state of the product, and...

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Abstract

The invention relates to the technical field of thermal control of a space optical remote sensor, and discloses a temperature control cover of a space optical reflecting mirror. The temperature control cover is arranged on a mirror frame of the optical reflecting mirror, a lens of the optical reflecting mirror is arranged in an inner cavity of the temperature control cover, a plurality of uniformly-distributed heating regions are arranged at an outer side of the temperature control cover, and heating assemblies are arranged on the heating region and are used for heating the temperature controlcover. On one hand, heat is enabled to be effectively released, and the thermal control efficiency is improved; on the other hand, the distances from heating pieces to an arbitrary position of the temperature control cover are equal, the integral thermal transfer rate of the temperature control cover is consistent, and the deformation quantity of the temperature control cover caused by temperature change is reduced; and by arranging a telescopic gap, the central deformation of the temperature control cover is reduced when a temperature is raised, and relatively large deformation generated byrapid temperature change in an outer space is adapted.

Description

technical field [0001] The invention relates to the technical field of thermal control of space optical remote sensors, in particular to a temperature control cover of a space optical mirror. Background technique [0002] Reflector is the most critical optical component in the optical system of space remote sensing camera, and its surface shape accuracy has a direct impact on imaging quality. In a space without gravity environment, the change of temperature is the most direct factor for the change of the surface shape of the reflector. When the visible light camera is in normal imaging, the surface shape accuracy of the reflector is generally better than 12nm (rms value). Any small temperature change will affect the reflector. Mirror shape accuracy is affected. In order to ensure the surface shape accuracy of the reflector, it is necessary to take thermal control measures for the reflector to ensure its temperature stability. When the space camera works in space, it will e...

Claims

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Application Information

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IPC IPC(8): G02B7/18G02B7/182G05D23/20
CPCG02B7/181G02B7/182G05D23/20
Inventor 刘强何欣崔永鹏张凯袁涛
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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