Ultra-light stray light eliminating assembly suitable for coaxial micro-nano remote sensing camera

Abstract

The invention discloses an ultra-light stray light eliminating assembly suitable for a coaxial micro-nano remote sensing camera, which relates to the field of space optical remote sensing. The ultra-light stray light eliminating assembly has the characteristics of light weight, simple structure, high stray light eliminating effect and the like, is excellent in mechanical property, and can meet thedual requirements of the micro-nano camera on quality and stray light elimination at the same time. The stray light eliminating assembly comprises a primary mirror light shield, a secondary mirror light shield and a primary force bearing structure. The primary mirror light shield and the secondary mirror light shield are fixedly installed through the primary bearing structure. According to the ultra-light stray light eliminating assembly disclosed in the invention, the coaxial structural form is adopted, the structure is simple, the primary mirror light shield and the secondary mirror light shield are both made of carbon fiber / epoxy composite materials, the advantages of being small in density, high in specific rigidity, high in specific strength, good in machining process, good in size stability, good in fatigue resistance, good in vibration resistance and the like are achieved, and therefore the quality and mechanical property requirements of micro-nano satellites are met.

Description

Technical field [0001] The invention patent relates to the field of space optical remote sensing, in particular to an ultra-light stray light elimination component suitable for coaxial micro-nano remote sensing cameras. Background technique [0002] The micro-nano satellite anti-stray light component needs to have the function of suppressing stray light, and have sufficient strength and rigidity under the premise of meeting the camera's ultra-light quality index. Usually, the anti-stray light component of the camera is to realize the anti-stray light function, and the structure design is relatively complicated and the quality is too large, which is not suitable for the micro-nano remote sensing camera. [0003] The main hood of the anti-stray light component of the space remote sensing camera can be divided into a fixed hood and an expandable hood. Fixed hoods can be divided into cylindrical, waist cylindrical, square cylindrical, hexagonal, etc., expandable hoods are divided into...

AI Technical Summary

Problems solved by technology

There are several problems with the above hood: (1) The quality is relatively large

The hood must have sufficient strength and rigidity to avoid excessive dynamic response during transportation and launch, cracking and damage, and even affect structural stability and reduce the imaging quality of the space camera optical system

However, the complex structure of the hood increases the workload and difficulty of mechanical property verification; (3) The development cycle is long and the processing cost is high

In order to promote the industrialization and large-scale development of micro-nano satellites, the development cycle of satellites should be shortened, and the difficulty and cost of processing should be reduced. Therefore, most light shields with complex structures cannot meet the current development needs of micro-nano satellites

Images