Testing optics by experimental ray tracing with a lateral effect photodiode
- 15 December 1988
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 27 (24) , 5160-5164
- https://doi.org/10.1364/ao.27.005160
Abstract
We demonstrate a method for testing optics (spherical and aspheric) and other reflecting or transmitting objects. We call this experimental ray tracing. A laser beam is sent through the sample, and its propagation is determined with a lateral effect photodiode. A modified Hartmann test can be performed by measurement of beam location within two planes. Measurement in one plane close to the focus delivers a spot diagram. The method is well suited for testing even strong aspheric optics. As a further use we demonstrate 3-D shape measurement of nonplanar glass plates, e.g., car windshields.Keywords
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