Results 221 to 230 of about 45,495 (276)
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Achromatic polarization rotator
Applied Optics, 2007What we believe to be a new optical element consisting of a single piece isotropic material with three internally reflecting faces for polarization plane rotation by the angle phi=pi/2 is proposed. The principle of operation is based on the geometrical phase effect, which is different in its origin but produces a similar effect to the circular ...
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Journal of the Optical Society of America, 1970
This paper constitutes a mathematical elaboration, in a form permitting direct predictions of data, of the empirical discoveries of Helson and Michels concerning the “effect of chromatic adaptation on achromaticity.” An equation is developed permitting the chromaticity of a test spot that appears achromatic against an extended chromatic background to ...
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This paper constitutes a mathematical elaboration, in a form permitting direct predictions of data, of the empirical discoveries of Helson and Michels concerning the “effect of chromatic adaptation on achromaticity.” An equation is developed permitting the chromaticity of a test spot that appears achromatic against an extended chromatic background to ...
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Optics and Spectroscopy, 2014
A polarimeter for measuring complete state of polarization of light in a wide spectral range is investigated. The light beam to be analyzed propagates through a continuously rotating first-phase plate; then through a continuously rotating second-phase plate; and, passing through a stationary linear polarizer, is incident on a detector.
A. S. Gurevich +2 more
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A polarimeter for measuring complete state of polarization of light in a wide spectral range is investigated. The light beam to be analyzed propagates through a continuously rotating first-phase plate; then through a continuously rotating second-phase plate; and, passing through a stationary linear polarizer, is incident on a detector.
A. S. Gurevich +2 more
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Achromatic optomechanical modulator
Applied Optics, 1986We present details of the construction and performance of an optomechanical amplitude modulator. The heart of the modulator is an oscillating small mirror which makes it a low-power low-voltage device. The modulation frequency is fixed, but, in our model, it can be changed from 10 to 20 kHz by simple adjustments, and the modulator has high transmission.
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Applied Optics, 2006
The principles of wavefront reconstruction by means of a geometric-optical reflection of radiation from surfaces of interference fringe maxima are discussed. The optical elements based on these principles should be achromatic. Two methods of the optical elements design are proposed. The first method is a direct holographic recording of the interference
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The principles of wavefront reconstruction by means of a geometric-optical reflection of radiation from surfaces of interference fringe maxima are discussed. The optical elements based on these principles should be achromatic. Two methods of the optical elements design are proposed. The first method is a direct holographic recording of the interference
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Achromatic color vision-I: Perceptive variables of achromatic colors
Vision Research, 1974Abstract Achromatic colors are usually considered to be specifiable by a single perceptive variable, although a few bidimensional systems for specification of such colors have previously been presented. Some of the most important concepts of achromatic color are reviewed, and evaluated against the color variations observable in a disc-ring ...
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Ginecologia y obstetricia de Mexico, 1991
Eleven patients with infertility of unknown cause and symptomatology suggestive of endometriosis were studied at the INPer. México from June 1, 1986 to December 15th, 1986. All these patients were subjected to a diagnostic laparoscopy, in 7/11 cases there were peritoneal lesions which were not classical of endometriosis in 2/11 there were typical ...
A, Kably Ambe +4 more
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Eleven patients with infertility of unknown cause and symptomatology suggestive of endometriosis were studied at the INPer. México from June 1, 1986 to December 15th, 1986. All these patients were subjected to a diagnostic laparoscopy, in 7/11 cases there were peritoneal lesions which were not classical of endometriosis in 2/11 there were typical ...
A, Kably Ambe +4 more
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Self‐Oxidation Resistance of the Curved Surface of Achromatic Copper
Advanced Materials, 2023Bipin Lamichhane +2 more
exaly
Broadband Achromatic Metalens in Mid‐Wavelength Infrared
Laser and Photonics Reviews, 2021Kai Ou, Feilong Yu, Guanhai Li
exaly