Results 61 to 70 of about 14,103,706 (328)

Characterization of diffractive bifocal intraocular lenses

open access: yesScientific Reports, 2023
Multifocal intraocular lenses incorporate a variety of design considerations, including dimensioning of the base monofocal shape and the diffraction grating.
Damian Mendroch   +2 more
doaj   +1 more source

Polarization Snapshot Imaging Spectrometer for Infrared Range

open access: yesPhotonics, 2023
Infrared imaging spectrometers detect and identify targets by collecting spectral and image information. However, when detecting small temperature differences and dynamic targets, the accuracy of infrared detection is reduced, the traditional scanning ...
Hongcheng Tao   +10 more
doaj   +1 more source

Multifocus microscopy with precise color multi-phase diffractive optics applied in functional neuronal imaging.

open access: yesBiomedical Optics Express, 2016
Multifocus microscopy (MFM) allows high-resolution instantaneous three-dimensional (3D) imaging and has been applied to study biological specimens ranging from single molecules inside cells nuclei to entire embryos.
S. Abrahamsson   +21 more
semanticscholar   +1 more source

Acknowledgment to Reviewers of Optics in 2020

open access: yes, 2021
Peer review is the driving force of journal development, and reviewers are gatekeepers who ensure that Optics maintains its standards for the high quality of its published papers [...
Optics Editorial Office Office
core   +1 more source

Point-to-point stabilized optical frequency transfer with active optics

open access: yesNature Communications, 2021
Timescale comparison between optical atomic clocks over ground-to-space and terrestrial free-space laser links will have enormous benefits for fundamental and applied sciences.
B. Dix-Matthews   +10 more
semanticscholar   +1 more source

An Improved Wavelet Modulus Algorithm Based on Fusion of Light Intensity and Degree of Polarization

open access: yesApplied Sciences, 2022
Edge detection is the basis of image analysis and image processing. The wavelet modulus maxima algorithm is a widely used edge-detection algorithm. The algorithm has the advantages of strong anti-noise ability and high precision of edge location, but it ...
Yunting Gu   +9 more
doaj   +1 more source

Research on Simulation and Generation Technology of Optical Signal of High‐Speed Projectile Passing through Target Based on Acousto‐Optic Modulation

open access: yesAdvanced Physics Research
In the field of evaluating the parameters of the weapon, since the true value of the velocity of the projectile under measure is unknown, the method of absolute metrology for the accuracy of the optoelectronic velocity measuring systems cannot be ...
Wenbo Chu   +6 more
doaj   +1 more source

Analysis of polarization aberrations of the off-axis pupil freeform optical system

open access: yesiScience
Summary: Freeform surfaces are widely used in off-axis pupil optical systems with large apertures, wide fields of view, and long focal lengths. Polarization effects in such systems significantly influence imaging quality.
Chenjie Gong   +5 more
doaj   +1 more source

A Noise Removal Algorithm Based on OPTICS for Photon-Counting LiDAR Data

open access: yesIEEE Geoscience and Remote Sensing Letters, 2020
Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2) shows great potential for forest height retrieval. However, there are abundant noise photons in the ICESat-2 data, which make the accurate extraction of global forest heights challenging.
Xiao-Xiao Zhu   +6 more
semanticscholar   +1 more source

Global Efforts to Reduce Paediatric Cancer Care Disparities in Radiotherapy: A Decade Change

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background We present an update on the status, needs and challenges faced by paediatric imaging and radiotherapy (RT) programmes globally after a previous survey conducted by the International Atomic Energy Agency (IAEA) 10 years prior. Methods We developed and distributed a 121‐question survey to radiation oncologists, medical physicists and ...
Raymond B. Mailhot Vega   +10 more
wiley   +1 more source

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