Replicated optics make possible the design and manufacture of mirror structures of exceptionally low weight. In practice, mirrors replicated over light-weight substrates are found to exhibit problems of dimensional stability induced by the operating environment. This paper discusses issues associated with the design and fabrication of light-weight replicated mirrors and describes the results of dimensional stability tests performed on replica structures exposed to thermal and dynamic stresses.
Pierre J. Brosens,
"Stability Of Light-Weight Replicated Mirrors", Proc. SPIE 0896, Replication and Molding of Optical Components, (13 July 1988); doi: 10.1117/12.944461; https://doi.org/10.1117/12.944461