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Priority to JP7193285UpriorityCriticalpatent/JPS61187428U/ja
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The use of an image derotator in hologram interferometry and speckle photography of rotating objects: A rotating inverting prism, synchronized to half the speed of a rotating object, renders its image stationary and makes hologram interferometry possible
Holographic vibration study of a rotating propeller blade: Vibration-mode patterns of a rotating propeller can be observed and analyzed by means of an axially symmetric spinning-hologram technique
Real-time response of a rotating disk using image-derotated holographic interferometry: An image derotator is used in conjunction with a strobed argon-ion laser to carry out a real-time vibration analysis of a rotating disk