Results 201 to 210 of about 16,467 (243)

Non-contact lensless holographic reconstruction of diffractive intraocular lenses profiles. [PDF]

open access: yesSci Rep
Vila-Andrés R   +4 more
europepmc   +1 more source

Infrared holographic interferometry

Applied Optics, 1986
Infrared (10.6-μm) dynamic holograms are obtained on a recording medium consisting of a thin oil film on a glass substrate. Reconstruction with visible light (0.63 μm) permits copying the initial hologram on a photographic plate. Any subsequent displacement of the object modifies the corresponding reconstructed wave at the recording medium, thereby ...
J, Lewandowski   +3 more
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Holographic interferometry

Critical reviews in biomedical engineering, 1989
Since its inception three decades ago, holographic interferometry has proven to be a powerful nondestructive testing technique for the measurement of displacement and its derivatives. It is a whole-field, noncontact method which requires the use of a hologram to record three-dimensional information about the surface of an object.
openaire   +3 more sources

Holographic Interferometry

Journal of Applied Physics, 1966
A new method of interferometry, based upon holographic photography, is described. The interferometer uses a common optical path in which beam separation is achieved by two exposures separated in time. Its significant advantages are (1) accurate alignment and precision optical elements are not required, (2) differential interferometry, used to measure ...
L. O. Heflinger   +2 more
openaire   +1 more source

Multiwavelength rainbow holographic interferometry

Applied Optics, 1979
Although the two-step rainbow holographic process of Benton [S. A. Benton, J. Opt. Soc. Am. 50, (1969)] offers a significant improvement in holographic displays, its scientific applications are somewhat limited. It is primarily due to the awkardness of the two-step process. We have demonstrated [H. and F. T. S. Yu, Opt. Lett.
F T, Yu, A, Tai, H, Chen
openaire   +2 more sources

Three-Beam Holographic Interferometry

Applied Optics, 1967
Holographic interferometry is certainly one of the most useful practical applications of holography. This subject was initiated principally by Stetson and Powell with a double exposure technique. In this paper a new technique is exposed which needs only one exposure of the photographic emulsion.
M, De, L, Sevigny
openaire   +2 more sources

Shifted Reference Holographic Interferometry

Applied Optics, 1973
Conventional holographic interferometry of vibrating objects yields reconstructed images in which the radiance of each point is proportional to the square of the zero-order Bessel function of an argument proportional to the vibration amplitude. Therefore, the vibration pattern appears as a dark outline on the bright background of the nonvibrating ...
M H, Zambuto, W K, Fischer
openaire   +2 more sources

Heterodyne Holographic Interferometry

SPIE Proceedings, 1986
A write/readout system is described for double pulsed holograms. The write subsystem utilizes rapidly addressable, angularly resolved reference beams. The readout subsystem is based on heterodyne interferometry. Several readout configurations are discussed, each with advantages for various holograms.
D. M. Swain, R. J. Tansey
openaire   +1 more source

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