Abstract

This paper describes a process of production of high-quality aluminum-filled epoxy replica mirrors using a glass master in a two-step process. From photometric data using a circle-of-confusion tester, optical data is given which evaluates the performance of these mirrors, cast by different methods and subjected to various environmental conditions. The data indicate that the mirrors can undergo significant thermal shock, thermal cycling, nuclear radiation, and change in moisture content without being severely degraded. Results of research on some of the physical properties of polymerized epoxy resins, which are pertinent in design and application of the mirrors, are presented.

© 1960 Optical Society of America

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