Results 11 to 20 of about 666,055 (319)

Desensitized telescope optical design: NSOS-α case study [PDF]

open access: yesEPJ Web of Conferences
NSOS-α is a 1.5-m aperture, F/1.55, wide field prime focus telescope for the Korea Astronomy & Space Science Institute (KASI) to discover and catalogue near-Earth asteroids, especially Potentially Hazardous Asteroids. Among the different optical designs,
Spanò Paolo   +4 more
doaj   +1 more source

Using a GPS-Aided Inertial System for Coarse-Pointing of Free-Space Optical Communication Terminals [PDF]

open access: yes, 2006
In the Capanina project, it has been shown that it is possible to use solely GPS positions for coarse-pointing of a stratospheric free-space optical communication terminal.
Bernhard Epple, Epple, Bernhard
core   +1 more source

The Ascendency of Numerical Methods in Lens Design

open access: yesJournal of Imaging, 2018
Advancement in physics often results from analyzing numerical data and then creating a theoretical model that can explain and predict those data. In the field of lens design, the reverse is true: longstanding theoretical understanding is being overtaken ...
Donald C. Dilworth
doaj   +1 more source

Passive Athermal Optical Design Method Considering Thermal-Induced Surface Deformation

open access: yesPhotonics, 2021
Temperature variation not only results in changes in refractive index, radius, thickness, and air space, but also leads to surface deformation due to the mismatch in thermal expansion coefficients between glass and mechanical materials. However, existing
Tao Liu   +4 more
doaj   +1 more source

Optical interconnection networks based on microring resonators [PDF]

open access: yes, 2012
Optical microring resonators can be integrated on a chip to perform switching operations directly in the optical domain. Thus they become a building block to create switching elements in on-chip optical interconnection networks, which promise to overcome
Cuda, Davide   +6 more
core   +1 more source

AR-HUD Optical System Design and Its Multiple Configurations Analysis

open access: yesPhotonics, 2023
The use of augmented reality head-up displays (AR-HUD) in automobile safety driving has drawn more and more interest in recent years. An AR-HUD display system should be developed to fit the vehicle and the complicated traffic environment in order to ...
Qubo Jiang, Zhiyuan Guo
doaj   +1 more source

Optical system design based on Bi-directional sensor devices

open access: yes, 2022
Paper 848706Small and compact optical system designs are needed in nearly all application scenarios of optical projection and imaging systems, e.g. automotive, metrology, medical or multimedia.
Großmann, Constanze   +4 more
core   +1 more source

Characterization of optical fiber imaging bundles for swept-source optical coherence tomography [PDF]

open access: yes, 2011
Fiber imaging bundles have been investigated for use in endoscopic optical coherence tomography (OCT) systems, to obviate the requirement for scanning components within the endoscope probe section.
Helen D. Ford   +3 more
core   +1 more source

Shape recognition using orientational and morphological scale‐spaces of curvatures

open access: yesIET Computer Vision, 2015
In this study, a scale‐invariant representation for closed planar curves (silhouettes) is proposed. The orientations of all points within the Gaussian scale‐space of the curve are extracted.
Erdem Akagündüz
doaj   +1 more source

Design and analysis of a micro-optical speckle displacement sensor

open access: yes, 2022
S.93-100The presented displacement sensor is based on the interference of a reference beam and the back-scattered speckle light from the moving surface under inspection.
Zeitner, U.D., Schreiber, P.
core   +1 more source

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