Banana technology

Willem D. van Amstel; E. P. A. Schellekens; C. Walravens; A. P. F. Wijlaars

doi:10.1117/12.360132

6 September 1999 Banana technology

Willem D. van Amstel, E. P. A. Schellekens, C. Walravens, A. P. F. Wijlaars

Proceedings Volume 3739, Optical Fabrication and Testing; (1999) https://doi.org/10.1117/12.360132
Event: Optical Systems Design and Production, 1999, Berlin, Germany

Abstract

With 'Banana Technology' an unconventional hybrid fabrication technology is indicated for the production of very large parabolic and hyperbolic cylindrical mirror systems. The banana technology uses elastic bending of very large and thin glass substrates and fixation onto NC milled metal moulds. This technology has matured during the last twenty years for the manufacturing of large telecentric flat-bed scanners. Two construction types, called 'internal banana' and 'external banana; are presented. Optical figure quality requirements in terms of slope and curvature deviations are discussed. Measurements of these optical specifications by means of a 'finishing rod' type of scanning deflectometer or slope tester are presented. Design constraints for bending glass and the advantages of a new process will be discussed.

Citation Download Citation

Willem D. van Amstel, E. P. A. Schellekens, C. Walravens, and A. P. F. Wijlaars "Banana technology", Proc. SPIE 3739, Optical Fabrication and Testing, (6 September 1999); https://doi.org/10.1117/12.360132

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