Composite technology for lightweight optical mirrors

Bernd Abt; Gunter Helwig; Dietmar Scheulen

doi:10.1117/12.19239

1 July 1990 Composite technology for lightweight optical mirrors

Bernd Abt, Gunter Helwig, Dietmar Scheulen

Proceedings Volume 1236, Advanced Technology Optical Telescopes IV; (1990) https://doi.org/10.1117/12.19239
Event: SPIE Astronomical Telescopes and Instrumentation for the 21st Century, 1990, Tucson, AZ, United States

Abstract

Reflectors for antennas using fiber-composite technology today represent the state of the art, and mirrors for radio telescopes occasionally are already made using this technology. For even shorter wavelengths, including the visible light, glass mirrors have been used almost exclusively and, rarely, metal mirrors (for example made of beryllium). In general a surface contour accuracy of about 1/20 wavelength is required. Years of development work based on experience gained in aircraft construction and space technology made it possible to improve fiber-composite technology to such an extent that a substitute for heavy glass has become feasible, opening up new applications for lighter and/or larger mirrors.

Citation Download Citation

Bernd Abt, Gunter Helwig, and Dietmar Scheulen "Composite technology for lightweight optical mirrors", Proc. SPIE 1236, Advanced Technology Optical Telescopes IV, (1 July 1990); https://doi.org/10.1117/12.19239

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