A double-layer micro-cellular light shield for stray light suppression in spaceborne optical systems

Abstract

The invention relates to a stray light suppressing shading cover, in particular to a double-layer micro-cellular shading cover used for suppressing stray light in a spaceborne optical system. The double-layer micro-cellular shading cover includes a cover body wall, an inner honeycomb layer, an outer honeycomb layer, a cover bottom fixing ring and a cover top fixing ring; the inner honeycomb layer is bonded to the cover body with one side layer as the bonding surface The inner surface of the wall; the other side layer of the inner honeycomb layer is bonded with the outer honeycomb layer, and the honeycomb holes on the inner honeycomb layer and the honeycomb holes on the outer honeycomb layer maintain an open staggered form; the inner honeycomb layer The honeycomb layer and the outer honeycomb layer are inside the shading cover, and the upper and lower edges of the inner honeycomb layer and the outer honeycomb layer are respectively connected with the cover bottom fixing ring and the cover top fixing ring. The double-layer micro-cellular shading cover can effectively block the propagation of stray light outside the field of view to the interior of the optical system, meeting the high-resolution detection requirements of the spaceborne optical system.

Description

technical field [0001] The invention relates to a stray light suppressing shading cover, in particular to a double-layer micro-cellular shading cover used for suppressing stray light in a spaceborne optical system. Background technique [0002] Stray light suppression design is one of the key technologies in the development of optical systems. With the rapid development of space optical systems, the detected target signal is very weak, and strong stray light reaching the image plane will reduce the imaging contrast and even drown the target signal. Therefore, it is necessary to further improve the performance of the stray light suppression structure and ensure the signal-to-noise ratio to meet the system design requirements of high detection capability and high resolution. [0003] The hood is the core component to suppress the stray light of the space on-board optical system, and can effectively suppress the stray light outside the field of view, such as sunlight, earth at...

AI Technical Summary

Problems solved by technology

In the prior art, the ability to suppress stray light energy by setting a single-layer micro-cell on the inner wall of the hood is still very limited.

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