Results 111 to 120 of about 3,440 (163)
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Applied Optics, 2020
In this paper, we present theoretical foundations of first-order design of an imaging refractometer. This refractometer may be used to measure the refractive index of liquids over a wide range. Refractive index reconstruction techniques are presented, and analytical reconstruction expressions are derived. The validity of the derived
Rania H, Abd El-Maksoud, Monia, Ayari
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In this paper, we present theoretical foundations of first-order design of an imaging refractometer. This refractometer may be used to measure the refractive index of liquids over a wide range. Refractive index reconstruction techniques are presented, and analytical reconstruction expressions are derived. The validity of the derived
Rania H, Abd El-Maksoud, Monia, Ayari
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A Novel Refractometer Architecture
2008 IEEE International Symposium on Circuits and Systems (ISCAS), 2008A novel means for extracting refractive index information from a surface plasmon resonance (SPR) sensor system is presented. Rather than relying on output wavelength (from a polychromatic light source) or angle of incidence (from a monochromatic wave source) to identify the point of SPR, the system presented herein uses the spectral shift induced by ...
Brian Ferguson +6 more
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Applied Optics, 1984
This paper describes how a conventional Pulfrich refractometer can be modified for use with laser light sources for the precise determination of the refractive index of liquids. Measurements carried out on water, several organic liquids, and KCI solutions are reported.
E, Moreels, C, de Greef, R, Finsy
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This paper describes how a conventional Pulfrich refractometer can be modified for use with laser light sources for the precise determination of the refractive index of liquids. Measurements carried out on water, several organic liquids, and KCI solutions are reported.
E, Moreels, C, de Greef, R, Finsy
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Optical Waveguide Refractometers
2005In this chapter we have illustrated a new method for the determination of the refractive index of liquid samples, based on Cerenkov second harmonic generation from suitable planar waveguides. The method allows the determination of the refractive index in the near infrared by detection in the visible.
MARANGONI, MARCO ANDREA +2 more
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Journal of the Optical Society of America, 1949
A new refractometer is described, based on the principle of the penetration of light into the rarer medium at total reflection. A transparent hemisphere with a slightly curved diametral plane makes point contact with the smooth surface of the sample to be measured. When viewed through the hemispherical surface, Newton’s black spot is visible.
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A new refractometer is described, based on the principle of the penetration of light into the rarer medium at total reflection. A transparent hemisphere with a slightly curved diametral plane makes point contact with the smooth surface of the sample to be measured. When viewed through the hemispherical surface, Newton’s black spot is visible.
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The Spatially Resolved Refractometer
Journal of Refractive Surgery, 2000ABSTRACT PURPOSE: To investigate factors controlling the aberrations of the eye, including accommodation, wavelength, and the apodization of the optics of the eye by cone directional selectivity. METHODS: We constructed a new implementation of the Spatially Resolved Refractometer (SRR).
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Journal of the Optical Society of America, 1951
The design and performance of an absolute deviation type of differential refractometer is described. The apparatus comprises mercury and sodium lamps, monochromatic filters, slit, differential cell, projection lens, and micrometer microscope, all accurately aligned on an optical bench.
B. A. Brice, M. Halwer
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The design and performance of an absolute deviation type of differential refractometer is described. The apparatus comprises mercury and sodium lamps, monochromatic filters, slit, differential cell, projection lens, and micrometer microscope, all accurately aligned on an optical bench.
B. A. Brice, M. Halwer
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Testing the FOCOMETER—A New Refractometer
Optometry and Vision Science, 1993ABSTRACT The FOCOMETER, an optometer which measures spherical refractive errors, is intended to provide rural or economically disadvantaged populations spherical prescriptions without the need for complicated protocols, expensive equipment, or electricity.
I B, Berger +7 more
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