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Proceedings Paper

An intuitive concept for manufacturing and inspecting of aspherical components
Author(s): Hsiao-Yu Chou; Keng-Shou Chang
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Paper Abstract

In this paper we propose an intuitive concept for manufacturing and inspecting of aspherical components. Two types, parabolic and cylinder, of plano-convex and plano-concave aspherical lenses were made by LOH 120S form generation machine. Three form error measurement methods were used known as coordinate measuring machine (CMM), interferometer with CGH null lens and inspection with combined pair lenses. Ultra high accuracy CMM from Panasonic Co., CGH cylinder null and CGH aspheric null from Diffraction International and OWI 150 ASPH CGH interferometer from OptoTech GmbH play the roll for measurement. CMM was used as a surface profiler to inspect the surface shape, and the software GRAPHER was also used as analysis tool to exam asphere numerical datum. The difference between theoretical and practical is as a surface polishing revised reference. The finished plano-convex and plano-concave aspherical lenses can be combined to be a plane lens. The individual and combined lenses were inspected on OPTOTECH OWI 150 ASPH CGH interferometer. The compared interference patterns have shown with the Diffration International CGH Aspheric Null "ASPHERIC 1" and CGH Cylinder Null "H80F2C". Through the procedure, the combined plano-convex and plano-concave aspherical lenses should be a perfect match plane lens and the individual lens might be an aspherical test standard element for quick inspection.

Paper Details

Date Published: 27 September 2011
PDF: 8 pages
Proc. SPIE 8126, Optical Manufacturing and Testing IX, 81261B (27 September 2011); doi: 10.1117/12.893556
Show Author Affiliations
Hsiao-Yu Chou, Instrument Technology Research Ctr. (Taiwan)
Chung Hua Univ. (Taiwan)
Keng-Shou Chang, Instrument Technology Research Ctr. (Taiwan)

Published in SPIE Proceedings Vol. 8126:
Optical Manufacturing and Testing IX
James H. Burge; Oliver W. Fähnle; Ray Williamson, Editor(s)

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