Showing papers on "Speckle imaging published in 1971"
TL;DR: In this article, it was shown that nodal lines and the amplitude of the vibrating object can be detected in the same experimental arrangement as used earlier by Archbold et al.
36 citations
14 Oct 1971
TL;DR: In this article, a visual surface depth probe is considered as an example of a non-interferometric speckle device, and the depth probe can be used to compare a succession of diffusely reflecting components against a master shape.
Abstract: During the past three years several methods have been found for extracting useful information from laser speckle patterns, either visually or by photographic or photoelectric correlation techniques. Speckle interferometers can be used to detect movement or vibration, or to measure inplane strain of a loaded specimen. It is possible that they can be used for desensitised comparison of a succession of diffusely reflecting components against a master shape. As an example of a noninterferometric speckle device, a visual surface depth probe will be considered.
12 citations
TL;DR: In this paper, the principle of a holographic interferometer is described, and experimental results are presented, drawing comparisons with the speckle interferometers of similar optical arrangement.
Abstract: This article describes the principle of a holographic interferometer, presents experimental results, and draws comparisons with the speckle interferometer of similar optical arrangement.
2 citations