Vanguard Space Technologies, Inc.

Stephen Leonard Engelson Wyatt

Theodore G Stern

A mirror for terrestrial or aerospace application has a substrate, which is preferably of a laminate of a plurality of Graphite Fiber Reinforced Composite (GFRC) uni-directional fiber plies applied in a laminate with layers oriented to achieve appropriate stable properties. The substrate is cured to form the desired shape with a first surface and a second surface opposite the first surface. A front buffering layer is immediately adjacent to and contiguous with the substrate on the first surface. The front buffer layer is of a material that buffers the surface morphology of the first surface of the substrate. A front specularizing layer is immediately adjacent to and contiguous with the front buffer layer. The specularizing layer is of a material for providing a smooth, low scatter optical surface. The specularizing layer can use an integral aluminized surface or an added vacuum deposited optical thin film coating for enhanced optical properties and durability. The mirror further has a rear buffering layer which is immediately adjacent to and contiguous with the second surface of the substrate. Finally, the mirror has a rear film which is immediately adjacent to and contiguous with the buffering layer. The material for the rear buffering layer can be the same material as that for the front buffering layer, and the material for the rear film can be the same material as that for the front specularizing layer, so as to balance the Coefficient of Thermal Expansions (CTE) of the front layers.

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San Diego, CA, United States of America

Stephen Leonard Engelson Wyatt