A new technique for generating spherical surfaces |
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| Authors: | D C Emmony P W Sharman |
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| Institution: | 1. Department of Physics, University of Technology, Loughborough, Leicestershire, UK;2. Department of Transport Technology, University of Technology, Loughborough, Leicestershire, UK |
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| Abstract: | Optical quality spherical surfaces have been generated by a technique which involves the differential contraction of two components bonded together at an elevated temperature. Preliminary experiments using flat glass plates and aluminium rings are described. Concave and convex surfaces have been produced with radii of curvature from 3—10 m. A theoretical analysis of the composite structure is given: the experimentally measured radii and those predicted theoretically differ by a factor of three. |
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