Results 201 to 210 of about 168,541 (274)
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Speckle interferometry in transparent media
Applied Optics, 1986Speckle interferometry is applied to transparent media to obtain measurements of full-field density variations. Speckle interferometry can present decreased vibration sensitivity compared to some wave front comparison methods while maintaining high sensitivity.
Patrick V Farrell
exaly +3 more sources
Optics Communications, 2021
In the present study, a brief, efficient and synchronous 3D (three-dimensional) deformation measurement method based on digital speckle pattern interferometry (DSPI) and digital shear speckle interference (DSSPI) was proposed.
Zhisong Li +5 more
semanticscholar +1 more source
In the present study, a brief, efficient and synchronous 3D (three-dimensional) deformation measurement method based on digital speckle pattern interferometry (DSPI) and digital shear speckle interference (DSSPI) was proposed.
Zhisong Li +5 more
semanticscholar +1 more source
Subfeature speckle interferometry
Optics Letters, 1995A novel speckle technique, subfeature speckle interferometry, is introduced that relies on the amplitude interference of two independent speckle patterns, originating from coherent illumination, by use of an optical system that produces interferometric quality interference fringes on a scale comparable with the speckle correlation length.
D, Burckel +4 more
openaire +2 more sources
Surface roughness estimation of wood boards using speckle interferometry
, 2020A problem present in the wood boards industry is the lack of knowledge of its roughness. The roughness causes the formation of voids between the board and the protective cover commonly used to give a special finish to the board.
E. Baradit +5 more
semanticscholar +1 more source
The Story of Speckles in Interferometry
, 2000 In this paper, I will tell you the story of speckles in interferometry from my personal point of view and based on my own experience with speckles and interferometry over the last 30 years. Although speckle phenomena had been observed and investigated since the later part of the nineteenth century by scientists interested in optics, like Newton, von ...
Dändliker, R.
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Hololens in speckle and speckle shear interferometry
Applied Optics, 1985This paper presents a number of methods to obtain in-plane displacement, out of plane displacement and slope data using holographic optical elements. The results obtained with a hololens and a holoshear lens are as good as those obtained with conventional optical systems.
C, Joenathan, R K, Mohanty, R S, Sirohi
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Measurement, 2019
Speckle interferometers, which can measure three-dimensional deformations with the same sensitivity in each direction of a three-dimensional axis, have been employed in the industry.
Y. Arai
semanticscholar +1 more source
Speckle interferometers, which can measure three-dimensional deformations with the same sensitivity in each direction of a three-dimensional axis, have been employed in the industry.
Y. Arai
semanticscholar +1 more source
Stellar speckle interferometry
Physics Bulletin, 1975Stellar speckle interferometry is a technique for obtaining diffraction-limited resolution of stellar objects despite the presence of the turbulent atmosphere which limits the resolution of conventional long-exposure pictures to approximately one arc second.
openaire +1 more source
Optical Engineering + Applications, 2018
Speckle interferometry is generally known as a method for measuring the deformation of an object with rough surfaces. In this paper, a three-dimensional (3D) shape measurement method is proposed for superfine structures beyond the diffraction limit using
Y. Arai
semanticscholar +1 more source
Speckle interferometry is generally known as a method for measuring the deformation of an object with rough surfaces. In this paper, a three-dimensional (3D) shape measurement method is proposed for superfine structures beyond the diffraction limit using
Y. Arai
semanticscholar +1 more source
Phase-shift speckle-shearing interferometry
Quantum electronics (Woodbury, N.Y.), 2020We have numerically simulated the process of measuring stress – strain states by the method of speckle-shearing interferometry using the phase-shift technique.
G. Vishnyakov +3 more
semanticscholar +1 more source