Results 11 to 20 of about 531,434 (269)
Desensitized telescope optical design: NSOS-α case study [PDF]
EPJ Web of ConferencesNSOS-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
The Ascendency of Numerical Methods in Lens Design
Journal 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
Photonics, 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
AR-HUD Optical System Design and Its Multiple Configurations Analysis
Photonics, 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
Shape recognition using orientational and morphological scale‐spaces of curvatures
IET 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
Optical Design of a Miniaturized Airborne Push-Broom Spectrometer
Applied Sciences, 2020 Combining the requirements of spectrometers for unmanned aerial vehicle platforms, a miniaturized airborne wide-angle push-broom imaging spectrometer with an Offner configuration is designed.
Yang Wang +4 more
doaj +1 more source
Photonics, 2021 In the past few decades, video endoscopy has become one of the primary medical devices in diverse clinical fields for examination, treatment, and early disease diagnosis of the gastrointestinal tract.
Dongmok Kim, Sehui Chang, Hyuk-Sang Kwon
doaj +1 more source
IEEE Access, 2017 Mindful of several recent developments in the area of wireless optical data transfer over long and short distances, we present a novel technique to transmit data using an optical carrier.
Syed Azer Reza, Muhammad Assad Arshad
doaj +1 more source
Opto-Electronic AdvancesWe report a novel stimulated Raman scattering (SRS) microscopy technique featuring phase-controlled light focusing and aberration corrections for rapid, deep tissue 3D chemical imaging with subcellular resolution.
Weiqi Wang, Zhiwei Huang
doaj +1 more source
Applied Sciences, 2019 An omni-directional optical system can be used as a surveillance camera owing to its wide field angle. In cases in which a system is designed with a central screen obscuring structure to increase the resolution of the off-axis field, however, the ...
Hojong Choi, Joo-Youn Jo, Jae-Myung Ryu
doaj +1 more source