Results 31 to 40 of about 531,434 (269)

Design of an experimental four-camera setup for enhanced 3D surface reconstruction in microsurgery

open access: yesCurrent Directions in Biomedical Engineering, 2017
Future fully digital surgical visualization systems enable a wide range of new options. Caused by optomechanical limitations a main disadvantage of today’s surgical microscopes is their incapability of providing arbitrary perspectives to more than two ...
Marzi Christian   +2 more
doaj   +1 more source

A Review of Daylighting System: For Prototype Systems Performance and Development

open access: yesEnergies, 2019
Daylighting systems make daylight illuminance possible, and the development of prototype daylighting systems can provide more efficient daylight illuminance.
Allen Jong-Woei Whang   +5 more
doaj   +1 more source

STARTING POINT SELECTION IN GROUPING DESIGN METHOD FOR LITHOGRAPHIC OBJECTIVES [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2019
This work aims on method development for obtaining initial designs for ultraviolet (UV) and deep-ultraviolet (DUV) objectives through global search algorithm. We studied a global search based algorithm tending to obtain the feasible local minima of lens
Nenad D. Zoric   +2 more
doaj   +1 more source

GREGOR ‐ optical design considerations

open access: yesAstronomische Nachrichten, 2003
AbstractAfter many years of successful work the Gregory Coudé Telescope (GCT) is going to be replaced by GREGOR. This new 1.5 m telescope is the result of design considerations which to a wide extent are based on new technologies. Special aspects of the design are presented, including measures to compensate for optical aberrations caused by ...
Soltau, D.   +6 more
openaire   +2 more sources

Guidelines for Pediatric Radiotherapy Simulation: A Report From the Children's Oncology Group Radiation Oncology Discipline

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric radiation therapy presents unique challenges compared to adult treatments, including those of immobilization, potential need for sedation, and the critical importance of accurate, reproducible positioning. Additionally, heightened attention to imaging doses is necessary to minimize long‐term toxicity in survivors.
Parham Alaei   +17 more
wiley   +1 more source

Surgical Lamp Design Based on LED Diffuse Transmission Illumination System

open access: yesIEEE Access, 2019
In this article, we have designed a surgical light lens especially for oral surgical illumination. It provides a uniform and wide field of view for illumination during oral surgery.
Zhenmin Zhu, Xin Xu, Jie Yuan
doaj   +1 more source

The Evaluation of Spectral Resolution in the Optical Design of a Czerny-Turner Spectrometer

open access: yesPhotonics, 2022
In this study, we propose a method of evaluating the spectral resolution of crossed-asymmetric Czerny-Turner spectrometers by comparing the impact of different slit functions on the optical transfer function, and different slit widths, through simulation
Wenjie Shi   +5 more
doaj   +1 more source

The Design of Optical Routes Applications [PDF]

open access: yes, 2007
Contemporary optical fibers can deal with almost all of the unfavorable effects which are known these days. They have sufficiently low specific slump, they can handle a slump caused by OH-ions, they can restrain the multimode effect and finally they can compensate a chromatic dispersion.
Martin Kyselak, Miloslav Filka
openaire   +1 more source

Health Literacy, Self‐Efficacy and Knowledge of Sickle Cell Disease Among Caregivers

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Sickle cell disease (SCD) is a hereditary blood disorder in which abnormal haemoglobin leads to severe anaemia, painful crises and organ failure. Caregivers’ health literacy (HL) – their ability to assess, understand and apply information, and interact with healthcare professionals – is crucial for managing children with SCD, yet ...
Melanie Bruinooge   +6 more
wiley   +1 more source

Ultra-Wide-Field Long-Wave Infrared System via Hybrid Refractive–Reflective Structure and Field of View Stitching

open access: yesPhotonics
To address the application demands of ultra-wide-field optical systems, we developed a compact, long-infrared waveband optical system using a field-of-view (FoV) stitching method.
Yiruo Wang, Shan Mao, Jianlin Zhao
doaj   +1 more source

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