13 May 1981 Two Technologies Generating Aspherical Surfaces: Thermal Polishing Of A Glass-Grain-Settled Surface And Transparent Single-Point Turning Of Glass
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Proceedings Volume 0235, Aspheric Optics: Design, Manufacture, Testing; (1981) https://doi.org/10.1117/12.958968
Event: Aspheric Optics: Design, Manufacture, Testing, 1980, London, United Kingdom
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.
© (1981) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ruud Brehm, Ruud Brehm, Jan Haisma, Jan Haisma, } "Two Technologies Generating Aspherical Surfaces: Thermal Polishing Of A Glass-Grain-Settled Surface And Transparent Single-Point Turning Of Glass", Proc. SPIE 0235, Aspheric Optics: Design, Manufacture, Testing, (13 May 1981); doi: 10.1117/12.958968; https://doi.org/10.1117/12.958968
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