Results 21 to 30 of about 1,326 (153)

Possibilities of prismatic correction in the treatment of congenital horizontal nystagmus

open access: yesОфтальмохирургия, 2021
Purpose. Analysis the effectiveness of prismatic correction in the treatment of congenital horizontal nystagmus. Material and methods. The study included 20 patients with congenital horizontal nystagmus.
G. V. Gladysheva   +6 more
doaj   +1 more source

Single-shot off-axis digital holographic system with extended field-of-view by using multiplexing method

open access: yesScientific Reports, 2022
We propose a new configuration of single-shot off-axis digital holographic system to realize double the camera field-of-view (FOV) of the existing off-axis Mech-Zehnder type holographic setup.
Manoj Kumar, Lavlesh Pensia, Raj Kumar
doaj   +1 more source

Conservative and Surgical Management of Unilateral and Bilateral Internuclear Ophthalmoplegia (INO)—A Retrospective Analysis

open access: yesBritish and Irish Orthoptic Journal, 2022
Aim: To report the outcomes of the natural progression and ophthalmic treatment of patients reviewed in a tertiary hospital trust with unilateral or bilateral internuclear ophthalmoplegia.
Joshua Simmons, Martin Rhodes
doaj   +1 more source

Design of Novel Compound Fresnel Lens for High-Performance Photovoltaic Concentrator

open access: yesInternational Journal of Photoenergy, 2012
We present a new design of compound Fresnel-R concentrator which is composed of two lenses: a primary lens (Fresnel lens) that works by total internal reflection at outer sawteeth but refraction at inner sawteeth, and a ringed secondary lens that works ...
Lei Jing   +6 more
doaj   +1 more source

Design of an improved Fresnel prism

open access: yesActa Physica Sinica, 2006
Based on the optimization of the optical material and internal reflection angle, we designed a model of improved Fresnel prism that is insensitive to the angle of incidence. In this device, the incident light is reflected twice at the same internal reflection angle on the interface between two kinds of glass and the air.
null Tao Wei-Dong, null Wang Biao
openaire   +1 more source

ONE-DIMENSIONAL LIGHT BEAM WIDENING USING PRISMS FOR INCREASE OF SPECTROMETER SPECTRAL RESOLUTION AND ANGULAR DISPERSION

open access: yesПриборы и методы измерений, 2016
The increase of angular dispersion and slit resolution limit of grating spectrometers by means of variation of grating parameters is limited by its period and allowable order of diffraction. The special solutions (echelle, holographic, immersion gratings)
I. M. Gulis, A. G. Kupreyeu
doaj   +1 more source

Fresnel analysis of Kretschmann geometry with a uniaxial crystal layer on a three-layered film

open access: yesAIP Advances, 2016
The use of total internal reflection within the prism coupling scheme is a simple approach to the generation of surface plasmon polariton waves on a metal/dielectric interface.
Yu-Ju Hung, Yin-Rui Yen, I-Sheng Lin
doaj   +1 more source

Resolution Enhancement in Surface Plasmon Resonance Sensor Based on Waveguide Coupled Mode by Combining a Bimetallic Approach

open access: yesSensors, 2010
In this study, we present and demonstrate a new route to a great enhancement in resolution of surface plasmon resonance sensors. Basically, our approach combines a waveguide coupled plasmonic mode and a kind of Au/Ag bimetallic enhancement concept ...
Won Mok Kim   +4 more
doaj   +1 more source

Electronic detection of surface plasmon polaritons by metal-oxide-silicon capacitor

open access: yesAPL Photonics, 2016
An electronic detector of surface plasmon polaritons (SPPs) is reported. SPPs optically excited on a metal surface using a prism coupler are detected by using a close-coupled metal-oxide-silicon (MOS) capacitor. Incidence-angle dependence is explained by
Robert E. Peale   +7 more
doaj   +1 more source

Critical-Angle Differential Refractometry of Lossy Media: A Theoretical Study and Practical Design Issues

open access: yesInstruments, 2019
At a critical angle of incidence, Fresnel reflectance at an interface between a fronttransparent and a rear lossy medium exhibits sensitive dependencies on the complex refractiveindex of the latter.
Spyridon Koutsoumpos   +3 more
doaj   +1 more source

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