Light weight large-bore compound reflector

Abstract

The invention discloses a kind of weight reduced, large-bore, and compound reflector. It includes a compound lens which is composed of folded graphite fiber / wreath oxygen resin or graphite fiber / cyanic acid fat panel + beehive interlayer + graphite fiber / wreath oxygen resin or graphite fiber / cyanic acid fat panel. It has these characteristics: On the lens, there are a microlite cylinder array and a tiny glass reflection base which are both fixed by wreath oxygen resin; On the microlite reflection base, a metallic reflection layer which is plated in vacuum exists. The advantages of the invention are as follows: It takes the microlite cylinder array as the join linking the carbon fiber compound material lens and the microlites reflection base so that the compound material lens can match the microlites reflection base's coefficient of heat expansion well and the problem of the mirror surface's anamorphic caused by heat can be solved. Moreover, the fact that the microlites reflection base has a good optical surface guarantees the reflector's heat stability and chemical stability.

Description

technical field [0001] The invention relates to an optical reflector, in particular to a light-weight and large-diameter multi-point supporting compound reflector for a space camera. Background technique [0002] In space science, astronomical research, earth information and its environmental information, high-resolution and high-sensitivity space cameras are playing an increasingly important role. The ultra-lightweight large-aperture mirror is a key component of a high-resolution, high-sensitivity space camera. For large-aperture mirrors, under the premise of ensuring the optical performance of the mirror, the quality of the mirror directly determines the feasibility, reliability and economy of the mirror. In recent years, a carbon fiber composite material with light weight, high strength, high rigidity, and low thermal expansion coefficient has been widely used as a mirror blank for large-aperture mirrors. The advantage of using this material as a mirror blank is to achie...

AI Technical Summary

Problems solved by technology

In recent years, a carbon fiber composite material with light weight, high strength, high rigidity and low thermal expansion coefficient has been widely used as the mirror blank of large-aperture mirrors. The advantage of using this material as the mirror blank is to achieve the light weight of the mirror. However, due to the phenomenon of fiber printing on the surface of carbon fiber materials, it cannot be directly polished. At present, glass layers or metal reflective layers are generally formed on composite material panels by bonding or evaporation, but this method is quite difficult to prepare. , especially when bonding, due to the large area of ​​the mirror, it is easy to cause uneven thickness of the glue layer, bubbles, etc., which lead to instability of the mirror surface

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