Results 31 to 40 of about 775,307 (358)
Is it a coloboma or not? A new definition for isolated lens coloboma: focal zonular dysgenesis
The Pan-American Journal of Ophthalmology, 2023 Purpose: Ocular coloboma is defined as a congenital malformation caused by defective closure of the fetal fissure, resulting in a notch in any structure.
Nicole B Larivoir +5 more
doaj +1 more source
Gradient index phononic crystals and metamaterials
Nanophotonics, 2019 Phononic crystals and acoustic metamaterials are periodic structures whose effective properties can be tailored at will to achieve extreme control on wave propagation.
Jin Yabin +2 more
doaj +1 more source
Characterization of Tunable Micro-Lenses with a Versatile Optical Measuring System
Sensors, 2018 In this work, we present the results of the opto⁻electro⁻mechanical characterization of tunable micro-lenses, Tlens®, performed with a single-spot optical measuring system.
Sabina Merlo +4 more
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A Review of Smartphone Apps Used for Toric Intraocular Lens Calculation and Alignment
Vision, 2022 Smartphone apps are becoming increasingly popular in ophthalmology, one specific area of their application being toric intraocular lens (IOL) surgery for astigmatism correction.
Yarrow Scantling-Birch +3 more
doaj +1 more source
Design of Binary-Sequence Zone Plates in High Wavelength Domains
Sensors, 2018 The design of zone plates is an important topic in many areas of physics, such as optics, X-rays, microwaves or ultrasonics. In this paper, a zone plate design method, which provides high flexibility in the shaping of the focusing profile, is analyzed ...
José Miguel Fuster +3 more
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Deciphering Brain Function by Miniaturized Fluorescence Microscopy in Freely Behaving Animals
Frontiers in Neuroscience, 2020 Animal behavior is regulated by environmental stimuli and is shaped by the activity of neural networks, underscoring the importance of assessing the morpho-functional properties of different populations of cells in freely behaving animals.
Sarah Malvaut +7 more
doaj +1 more source
Photonics, 2021 This paper proposes the use of digital-grating moiré effect for measuring the focal lengths and radius of curvatures of biconvex and biconcave spherical simple lenses and spherical mirrors.
Chien-Yuan Han +5 more
doaj +1 more source
Finding strong lenses in CFHTLS using convolutional neural networks [PDF]
, 2017 We train and apply convolutional neural networks, a machine learning technique developed to learn from and classify image data, to Canada-France-Hawaii Telescope Legacy Survey (CFHTLS) imaging for the identification of potential strong lensing systems ...
Collett, Thomas +4 more
core +2 more sources
Photoaligned Liquid Crystalline Structures for Photonic Applications
Crystals, 2023 With the advancement of information display technologies, research on liquid crystals is undergoing a tremendous shift to photonic devices. For example, devices and configurations based on liquid crystal materials are being developed for various ...
Aleksey Kudreyko +3 more
doaj +1 more source
, 2017 We recently showed how structures of ideal (thin) lenses can act as (ray-optical) transformation-optics devices. This was done by breaking the structure down into all sets of ideal lenses in the structure that share a common edge, and showing that these ...
Belin, Jakub +3 more
core +1 more source