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dc.contributor.authorBlatt, Joel H.
dc.contributor.authorChang Ho, Huey- Chin
dc.contributor.authorYoung, Eddie H.
dc.date.accessioned2017-10-13T19:34:24Z
dc.date.available2017-10-13T19:34:24Z
dc.date.issued1988-08-22
dc.identifier.citationBlatt, J. H., Ho, H. -. C., & Young, E. H. (1988). Generation of moire contours with acousto-optic cells. Proceedings of SPIE - the International Society for Optical Engineering, 936, 270-274.en_US
dc.identifier.urihttp://hdl.handle.net/11141/1917
dc.description.abstractMoire contours are seen on a curved surface viewed through a grating when the surface is illuminated with a matched grating. We have been able to replace both the projection and viewing physical gratings with gratings of variable spacing generated in acousto-optic cells, and have been able to observe and record Moire contours. The gratings are generated by amplitude modulating 70 MHz AO cells with a 1 to 10 MHz square wave. The gratings become visible on the curved object by strobing the illuminating laser beam with 50 nsec pulses by means of an AO modulator. Data is given showing the variation in grating spacing with AO modulation frequency. Figures are presented showing the variation of the Moire contour spacing with the AO modulation frequency and with target contour. The results for an angled flat plate target are compared to those in the literature.en_US
dc.language.isoen_USen_US
dc.rightsThis published article is made available in accordance with publishers policy. It may be subject to U.S. copyright law. © (1988) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE).en_US
dc.rights.urihttp://spie.org/publications/journals/guidelines-for-authors#Terms_of_Useen_US
dc.titleGeneration of moire contours with acousto-optic cellsen_US
dc.typeConference Proceedingen_US
dc.identifier.doi10.1117/12.946944


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