The Institute of Physics ( IOP ) по журналам "Journal of Optics"
Отображаемые элементы 1-20 из 577
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(1977-11-01)A record of the surface wave of optical systems is obtained directly without ambiguity of sign. From the setting proposed by Keilmann (1970) two variants of a same principle have been tested: a method by optical path ...
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(1997-04-01)Based on the structure of substrate-mode holograms, a new type of 1-to- optical fan-out module which consists of two layers of grating arrays for optical interconnects is presented. The first and second layer have a grating ...
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(1981-11-01)By using MgO and MgF2 as high and low refractive index materials respectively and adapting metal-induced filter structures and transparent silicon gum as adhesive agent, 2200-2600 AA ultra-violet interference filters with ...
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(1979-11-01)The solar disc was scanned at 8 and 13 mm using the computer controlled 22 m radio telescope of Simes. A radial shift invariant Wiener filter was applied to restore the measured matrix and improve the image. The problems ...
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(1979-11-01)The first observations of speckled images of alpha -Orionis as obtained at the Cassegrain focus of the 193-cm telescope of the Haute Provence Observatory using an IR-TV camera are presented. The specific nature of the 2 ...
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(1989-11-01)After a review of fundamental definitions in binocular vision-binocular convergence, retinal disparity and their perceptual correlates (fusion, diplopia, suppression and stereoscopic depth)-psychophysical data on Panum's ...
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(1997-02-01)Starting from the colour-matching functions measured by Stiles - Burch for a 2° visual field and ten individual observers, published by Trezona we have discussed certain differences between this dataset and the CIE 1931 ...
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(1992-07-01)Using the Kirchhoff integral, the generalized ABCD propagation law for general astigmatic Gaussian beams through misaligned optical systems is derived. The commonly used q-parameter describing the stigmatic Gaussian beam ...
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(1981-11-01)The spectrograph produced consists of a monograph grating, stimagnetic along the entrance slit height, and a vidicon tube. The instrument is used to record the spatial intensity distribution of lines in the spectral range ...
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(1998-06-01)In this paper, a theoretical analysis of a sensor which uses a self-mixing interference effect inside a microchip laser is reported. Experimentally, the FMCW approach has been implemented by using both a Nd:YAG microchip ...
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(1991-01-01)An interferometric device for measuring absolute distance is described. A frequency-modulated laser diode is used as the light source. At the output of a Michelson interferometer a beat signal is detected-a process which ...
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(1998-06-01)A measurement technique is proposed based on dispersive interferometry using a comb-spectrum source: dispersive comb-spectrum interferometry (DCSI). The configuration proposed processes the Michelson interferometer output ...
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(1998-06-01)This paper describes the principle and design of a first prototype of an absolute distance interferometer using a variable synthetic wavelength. The major components of the prototype are two piezoelectrically tunable diode ...
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(1991-05-01)Refractive index measurements of air and pure gases have been carried out by using laser heterodyne interferometry. Measurement accuracy better than a few parts into 107 for refractive index of gases, is reported. This is ...
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(1987-03-01)A similarity coefficient to compare the images obtained by a digitizer system with coherent and incoherent light is defined. A quality prediction obtained by filtering the digitized image is applied. The influence of the ...
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(1985-01-01)A compound prism is proposed which permits the use of a wide slit in the visible and the ultraviolet spectra. If the light is inversed the compound prism acts as a monochromator.
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(1988-03-01)The authors present a synthetic formulation of the generalized Lorenz-Mie theory. With this very general fofmulation, they can describe scattering of arbitrary incident profiles by arbitrarily located spherical scatterers. ...
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(1977-11-01)The polarization state of light transmitted by cholesteric liquid crystals when the incident vibration direction makes any angle with the director, and when p>> lambda is studied. Theoretical investigations show that figures ...
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(1991-03-01)The principle and the components of an adaptive optics system are presented. The system scaling parameters are: the Fried diameter and the average speed of the turbulence. They determine the number of actuators of the ...
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(1995-03-01)In this paper, a diagrammatic method is proposed to describe the interference phenomena of convergent polarized light and explain the formation of the black cross and the isochromatic line pattern clearly.
Отображаемые элементы 1-20 из 577