1 January 1993 Measure of surface and bulk defects in any transmitting or reflecting optical component
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Abstract
An application of the Schlieren test method to evaluate scratches, digs, bubbles, inclusions, or any other kind of optical defects using the same simple equipment is reported. The system can be used in two different configurations, allowing the testing of mirror surfaces (reflection mode) and lenses (transparency mode) as well. The magnification is invariant and gives the opportunity to automatically count or compare defects with standards.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fabrizio Liberati, "Measure of surface and bulk defects in any transmitting or reflecting optical component", Proc. SPIE 1781, Specification and Measurement of Optical Systems, (1 January 1993); doi: 10.1117/12.140966; https://doi.org/10.1117/12.140966
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