Results 21 to 30 of about 173,282 (180)

Prisms in clinical practice

open access: yesKerala Journal of Ophthalmology, 2017
Prisms are used in diagnosis and Therapy of Ophthalmic disorders. Prismotherapy provides symptomatic relief not only in many kinds of squints, but also in non strabismic conditions like convergence insufficiency, nystagmus, heminopia etc. One of the most
J Antony
doaj   +1 more source

Giant Anisotropy and High Second-Order Nonlinearity of 3R-MoS<sub>2</sub> for Multifunctional Photonics. [PDF]

open access: yesAdv Mater
Graphical abstract highlights, 3R‐polytype of MoS2 (3R‐MoS2) as a multifunctional photonic platform enabled by giant optical anisotropy and optical nonlinearities, demonstrating subdiffractional waveguiding, giant second‐harmonic (SH) generation, and high‐performance reflective polarization control.
Ermolaev G   +17 more
europepmc   +2 more sources

Energetic Comparison of Linear Fresnel and Parabolic Trough Collector Systems [PDF]

open access: yes, 2012
Within the last years, Linear Fresnel (LF) collector systems have been developed as a technical alternative to parabolic trough collector (PT) systems. In the past, LF systems focused on low- and medium temperature applications.
Heiko Schenk   +7 more
core   +1 more source

High-Transmission Neutron Optical Devices Utilizing Micro-Machined Structures

open access: yesQuantum Beam Science, 2023
Neutrons are a powerful probe in material science with unique penetrating abilities. A major challenge stems from the fact that neutron optical devices are limited to refractive indices on the order of n≈1±10−5.
Connor Kapahi   +8 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

Large Scale Spectral Splitting Concentrator Photovoltaic System Based on Double Flat Waveguides

open access: yesEnergies, 2020
In this research, we present a novel design for a large scale spectral splitting concentrator photovoltaic system based on double flat waveguides. The sunlight concentrator consists of a Fresnel lens array and double waveguides.
Ngoc Hai Vu   +2 more
doaj   +1 more source

Calculate The Resonance Angle of Surface Plasmon Resonance Gold film Configured with Kretschmann

open access: yesTikrit Journal of Pure Science, 2022
The current work includes measurements of the resonance angle and reflectance for p-polarization of the electric field by using the Fresnel equation at a given length. Gold's surface plasmon wave can be seen at the metal-to-air boundary.
Yadgar Hussein Shwan
doaj   +1 more source

Fresnel-Kirchhoff integral for path loss prediction in outdoor urban environments.

open access: yes, 2004
Fresnel-Kirchhoff integral for path loss prediction in outdoor urban ...
Ying. Xu (7962167)
core   +4 more sources

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

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