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Proceedings Paper

Two Technologies Generating Aspherical Surfaces: Thermal Polishing Of A Glass-Grain-Settled Surface And Transparent Single-Point Turning Of Glass
Author(s): Ruud Brehm; Jan Haisma
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Paper Abstract

Thermal polishing of a settled layer of glass grains on a ground aspherical substrate by heat transfer is described. The layer-glass and substrate-glass have the same index of refraction. A phenomenological description is given of transparent turning of optical glasses by a single-point tool. The glass is turned at an elevated temperature at about the American softening temperature. A process combining abrasive turning and viscous relaxation makes transparent turning of a limited number of glasses possible.

Paper Details

Date Published: 13 May 1981
PDF: 11 pages
Proc. SPIE 0235, Aspheric Optics: Design, Manufacture, Testing, (13 May 1981); doi: 10.1117/12.958968
Show Author Affiliations
Ruud Brehm, Philips Research Laboratories (The Netherlands)
Jan Haisma, Philips Research Laboratories (The Netherlands)

Published in SPIE Proceedings Vol. 0235:
Aspheric Optics: Design, Manufacture, Testing
L. R. Baker; K. J. Rosenbruch, Editor(s)

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