Results 21 to 30 of about 1,345,844 (292)

Calibration and Image Reconstruction in a Spot Scanning Detection System for Surface Defects

open access: yesApplied Sciences, 2020
Compared to traditional approaches, the spot scanning surface defect evaluation system (SS-SDES) has better performances on the detection of small defects and defect classification for optical surfaces.
Fan Wu   +4 more
doaj   +1 more source

Selective Laser Melting of Maraging Steel Using Synchronized Three-Spot Scanning Strategies. [PDF]

open access: yesMaterials (Basel), 2021
The selective laser melting (SLM) process, a kind of metal additive manufacturing method, can produce parts with complex geometries that cannot be easily manufactured using material removal processes.
Cheng CW, Jhang Jian WY, Makala BPR.
europepmc   +2 more sources

Tackling range uncertainty in proton therapy: Development and evaluation of a new multi-slit prompt-gamma camera (MSPGC) system

open access: yesNuclear Engineering and Technology, 2023
In theory, the sharp dose falloff at the distal end of a proton beam allows for high conformal dose to the target. However, conformity has not been fully achieved in practice, primarily due to beam range uncertainty, which is approximately 4% and varies ...
Youngmo Ku   +7 more
doaj   +1 more source

Parallel image scanning with binary phase grating [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2011
We discuss a novel approach for parallel image scanning, whereby the intensity peaks are generated by a binary phase grating instead of a lens array. These gratings under certain conditions generate one light spot per grating period in several transverse
Brenner K.-H., Buschlinger R.
doaj   +1 more source

ON UNIFORMITY OF RASTER ILLUMINATION UNDER LASER SCANNING [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2016
The paper considers the possibility of a flat light field creation (light raster) of a large size by laser scanning at a distance of several tens of meters with angular sizes equal to 20º×4º.
S. A. Alekseev   +4 more
doaj   +1 more source

The SPOT Standard Digital Product Format [PDF]

open access: yes, 1997
This document describes the format of the "SPOT scene" digital products which are produced and distributed by SPOT IMAGE. This format is also called the "CAP format", since it has been designed to be produced by the Centre d’Archivage et de ...
SPOT, IMAGE
core   +1 more source

Study on the Rate of the Removal of Nano-Crystalline Diamond—Coated Materials by Femtosecond Laser Etching

open access: yesApplied Sciences, 2023
The rate of the removal of materials coated with nano−crystalline diamonds by femtosecond laser etching was examined by adjusting the repetition rate of the femtosecond laser, the energy−flux density of the concentrated spot, and the scanning speed.
Lujun Ren   +5 more
doaj   +1 more source

Dosimetric Comparison of Various Spot Placement Techniques in Proton Pencil Beam Scanning [PDF]

open access: yesInternational Journal of Particle Therapy, 2022
Purpose: To present quantitative dosimetric evaluations of five proton pencil beam spot placement techniques. Materials and Methods: The spot placement techniques that were investigated include two grid-based (rectilinear grid and hexagonal grid, both ...
Mahboob ur Rehman, PhD   +5 more
doaj   +1 more source

An ellipsoidal mirror for focusing neutral atomic and molecular beams [PDF]

open access: yes, 2010
Manipulation of atomic and molecular beams is essential to atom optics applications including atom lasers, atom lithography, atom interferometry and neutral atom microscopy.
Galas, J.   +45 more
core   +1 more source

Feasibility study on fiber-optic inorganic scintillator array sensor system for multi-dimensional scanning of radioactive waste

open access: yesNuclear Engineering and Technology, 2023
We developed a miniaturized multi-dimensional radiation sensor system consisting of an inorganic scintillator array and plastic optical fibers. This system can be applied to remotely obtain the radioactivity distribution and identify the radionuclides in
Jae Hyung Park   +6 more
doaj   +1 more source

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