Results 31 to 40 of about 169,669 (288)
Influence of bandwidth error on the performance of adaptive optics systems for uncooperative beacons
, 2022 S.F118-F125We discuss the capability of adaptive optics to increase the performance of laser systems operating in atmospheric turbulence. Our approach is based on the Zernike filter functions, Taylor's frozen-flow hypothesis, and bandwidth limitations of
Gladysz, Szymon, Toselli, Italo
core +1 more source
IEEE Access, 2021 We demonstrate a novel tempo-spatial mixed-modulation Fourier-transform infrared imaging spectrometer. The static interference channel based on a stepped micro-mirror contributes a compact system with high stability.
Jun Ren +7 more
doaj +1 more source
Butterfly Optics Exceed the Theoretical Limits of Conventional Apposition Eyes [PDF]
, 1987 Optical experiments on butterfly compound eyes show that they have angular sensitivities narrower than expected from conventional apposition eyes. This superior performance is explained by a theoretical model where the cone stalk is considered as a ...
Nilsson, D.-E., +3 more
core +1 more source
Polarization Snapshot Imaging Spectrometer for Infrared Range
Photonics, 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
Highly efficient frequency conversion with bandwidth compression of quantum light
Nature Communications, 2017 In quantum information technology the output of one element often does not match the required frequency and bandwidth of the input of the next element. Here, Allgaieret al.
Markus Allgaier +8 more
doaj +1 more source
Characterization of diffractive bifocal intraocular lenses
Scientific 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
Remote-controlled optics experiment for supporting senior high school and undergraduate teaching [PDF]
, 2023 14th Conference on Education and Training in Optics and Photonics, ETOP 2017, 16 Aug. 2017, Hangzhou, China202308 bcvcVersion of RecordOthersThe Hong Kong Polytechnic University; The Quality Education FundPublishedVoR ...
Choy, SH, Leung, CW, Mak, CL, Jim, KL
core +1 more source
Advanced Physics ResearchIn 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
iScienceSummary: 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
Surface characterization in fabrication environments using angle resolved light scattering: From roughness and defect analysis to in-situ coating inspection [PDF]
EPJ Web of ConferencesThe performance of an optical component or surface might quicky be limited by light scattering induced by the surface and coating roughness, as well as imperfections and contaminations. On the other hand, the scattered light contains valuable information
Munser Anne-Sophie +4 more
doaj +1 more source