A flexible self-deploying hood for a space camera

Abstract

A flexible auto-unfolding lens hood for a space camera comprises five elastic supporting structures with identical structure and function, five connecting supports with identical structure and function, a shading cover 3, a locking rope 4, two flame cutters and a mounting flange 6. When the camera is generally assembled, the mounting flange 6 is mounted at the position of a camera lens. After a satellite enters an orbit, the first flame cutter 5 or the second flame cutter 5 detonates and cuts off the locking rope 4, and the elastic supporting structures 1 drive the shading cover 3 to realize auto-unfolding and form the lens hood. The lens hood overcomes the shortcomings of large mass and complexity of an existing mechanism-type unfolding structure, also overcomes the shortcomings of low unfolding precision, poor rigidity and high system complexity of a flexible inflatable structure, and has good applicable values, and the structural mass and the launching cost of the lens hood are reduced.

Description

technical field [0001] The invention relates to the field of space expandable film structures, in particular to a flexible self-deployable shading cover for space cameras, which is suitable for large-scale space remote sensing cameras, especially the shading that can be folded and packaged before being launched into orbit, and released from constraints after entering orbit. cover. Background technique [0002] The optical system design of space remote sensing cameras needs to consider the influence of stray light on the optical system. Existing solutions include [0003] 1) Take technical measures on the inner surface of the hood of the optical system to attenuate or absorb the stray light energy by directly reducing, multiple reflection or absorbing incident light outside the field of view to achieve the purpose of attenuating the stray light energy, for example, in the optical system Set the light blocking ring on the inner surface and design a multi-level sunshade; [0...

AI Technical Summary

Problems solved by technology

[0007] The technical problem solved by the present invention is to overcome the deficiencies of the prior art and provide a flexible self-deployable hood for a space camera. By designing the hood of a space camera as a flexible self-deployable film structure, the existing mechanism-type expandable hood is solved. The shortcomings of large structural mass and complex mechanism reduce the structural quality and launch cost of the hood, make more effective use of the launch space, and at the same time solve the shortcomings of low deployment accuracy, poor rigidity, and high system complexity of the flexible inflatable deployment structure. good applicable value

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