Optical remote sensor hood

Abstract

The invention relates to the technical field of solar shielding at the light entrance of a high-orbit space optical remote sensor, and particularly discloses an optical remote sensor light shield, which includes a light blocking ring assembly, a stretching mechanism, a driving mechanism and an annular flexible wall surface. Before the satellite enters the orbit, the hood of the optical remote sensor is in a compressed state, and the walls between the light barriers at all levels are in a folded state. After the satellite enters the predetermined orbit, driven by the driving mechanism, the stretching mechanism unfolds step by step, and the stretching mechanism drives the corresponding barrier. As the halo expands step by step, the walls between the halos will also expand accordingly, so that the entire optical remote sensor hood can be gradually expanded on-orbit along the direction of the camera's optical axis. The light shield of the present invention can directly reflect the incident sunlight after the rail is unfolded, part of the incident light can be directly reflected out of the light shield, and part of the incident light can also be moved forward, thereby significantly weakening the thermal disturbance of the incident sunlight to the optical system, While avoiding direct sunlight, it achieves good stray light suppression and heat dissipation effects.

Description

technical field [0001] The invention relates to the technical field of sun shading at light inlets of high-orbit space optical remote sensors, in particular to a light shading cover for optical remote sensors. Background technique [0002] The optical remote sensor in geostationary orbit has the remarkable characteristics of wide visual range, long monitoring time, and fixed-point timing camera. In theory, it can cover most of the world's regions through a three-satellite network. All-weather survey capability. Due to the huge application prospects of high-orbit optical remote sensors in the fields of weather forecasting, environmental protection, and land survey, the development of high-orbit optical remote sensors has been started at home and abroad. For space optical remote sensors in geostationary orbit, it faces In the complex and alternating heat flow outside the space, the light entrance of the camera will be directly irradiated by the sun during nearly half of the o...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to overcome the technical defect that the existing shading hood cannot prevent the energy incident into the shading hood from still causing strong thermal disturbance to the optical system, and provides a device that can greatly reduce the thermal disturbance of the optical system caused by incident sunlight and avoid direct sunlight. At the same time, the optical remote sensor hood that achieves good stray light suppression and heat dissipation effect

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