Proceedings PaperAlternative substrates to glass mirrors
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Traditionally glass represents the common choice for mirror substrates and the current development of new techniques such as glass ceramics, lightweighted blanks or honeycomb structures even increase the fields of application of glass mirrors. However, the research on alternative substrates for mirrors covers a large variety of materials: metals, silicon, silicon carbide, metal matrix, etc... This presentation concentrates on the machining, polishing and testing of aluminum mirrors to demonstrate that the optical performance of these substrates can be compared to the more classical glass mirrors.