A light-weight space camera main bearing device with focusing function

Abstract

The utility model relates to a light space camera main force bearing device with a focusing function, which belongs to the technical field of space optical remote sensing. The invention solves the problems in the prior art that the focusing mechanism needs to be separately designed to realize the camera focusing, which leads to higher requirements on the quality and assembly of the parts, and meanwhile increases the envelope size and quality of the payload. The main load-bearing backplane is coaxially fixed at the bottom of the lower ring structure, the primary mirror of the camera is installed on the main load-bearing backplane, the secondary mirror of the camera is installed on the upper ring structure, the material of the main load-bearing truss and the main The characteristics of the linear expansion coefficient of the load-bearing backboard material match, and the outer wall of the lower ring structure and each truss rod are respectively pasted with a heat-conducting film, and each heat-conducting film is pasted with a thermistor and several heating sheets. Through the combined use of heaters, thermistors, and heat-conducting films, combined with the main load-bearing truss and main load-bearing back plate with matching material linear expansion coefficients, the camera focus 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

Images