Lightweight mirror especially for astronomical purposes

Details Lightweight mirror especially for astronomical purposes Lightweight mirror especially for astronomical purposes

1981-05-01

1984-08-21

Evans, F. L.

350320, G02B 508

Patent

active

044667000

ABSTRACT:
The lightweight mirror has a special core construction. The core consists of flat and/or tubular pieces which are joined together by means of a sintering composition. The sintering composition has open pores. In the production of the core, the sintering composition is poured into interstices between pairs of adjacent flat and/or tubular pieces and heated to the sintering temperature in a nonoxidizing atmosphere together with the flat and/or tubular pieces. A layer of sintering composition can be provided on the faces of the front and/or back plate of the lightweight mirror which confront the core. Stiffening rods can be embedded in the sintering composition.

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