Light space camera main force-bearing device with focusing function

Abstract

A light space camera main force-bearing device with a focusing function belongs to the technical field of space optical remote sensing. The problem that the requirements for the quality and assembly of parts are high and the envelope size and quality of effective loads are increased due to the fact that a focusing mechanism needs to be independently designed to achieve camera focusing in the priorart is solved. A main force-bearing back plate is coaxially and fixedly connected to the bottom end of a lower circular ring structure. A primary mirror of a camera is arranged on the main force-bearing back plate, and a secondary mirror of the camera is arranged on an upper circular ring structure. The linear expansion coefficient characteristic of the material of a main force-bearing truss andthe linear expansion coefficient characteristic of the material of the main force-bearing back plate are matched. Heat conducting films are respectively adhered to the outer wall of the lower circularring structure and each truss rod, and a thermistor and a plurality of heating sheets are adhered to each heat conducting film. Through cooperative use of the heating sheets, the thermistors and theheat conducting films and through the main force-bearing truss and the main force-bearing back plate with matched material linear expansion coefficients, camera focusing is realized.

Description

technical field [0001] The invention relates to a light-weight space camera main bearing device with a focusing function, and belongs to the technical field of space optical remote sensing. Background technique [0002] Micro-remote sensing payload technology, as the core content of micro-spacecraft distributed remote-sensing technology research, can greatly reduce the quality of the payload and improve the long-term stability and environmental adaptability of the payload. Monitoring and assessment, environmental and natural disaster monitoring, coastline monitoring and management, emergency rescue and disaster relief and other fields have important scientific significance and economic value. [0003] In light-weight space optical remote sensors, the main load-bearing structure occupies a large proportion of the overall mass of the camera, and provides installation and positioning for optical components; the main mirror assembly is installed on the main load-bearing back pla...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem in the prior art that the focusing mechanism needs to be designed separately to achieve camera focusing, which leads to higher requirements on the quality and assembly of parts, and at the same time increases the envelope size and quality of the payload, and further provides a A light-weight space camera main bearing device with focusing function

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