Results 31 to 40 of about 351,194 (295)
Antenna Design for the Arctic Weather Satellite Microwave Sounder
IEEE Open Journal of Antennas and Propagation, 2023 The Arctic Weather Satellite (AWS) is a prototype mission for an operational constellation of microwave sounders, complimenting existing meteorological sounders.
Roland Albers, Anders Emrich, Axel Murk
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Post processing of differential images for direct extrasolar planet detection from the ground [PDF]
, 2006 The direct imaging from the ground of extrasolar planets has become today a major astronomical and biological focus. This kind of imaging requires simultaneously the use of a dedicated high performance Adaptive Optics [AO] system and a differential ...
Fusco, T. +3 more
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Optical microscope illumination analysis using through-focus scanning optical microscopy [PDF]
Optics Letters, 2017 Misalignment of the aperture diaphragm present in optical microscopes results in angular illumination asymmetry (ANILAS) at the sample plane. Here we show that through-focus propagation of ANILAS results in a lateral image shift with a focus position.
Ravi Kiran, Attota, Haesung, Park
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, 2007 We present a formalism of x-ray dynamical diffraction from volume diffractive optics with large numerical aperture and high aspect ratio, in an analogy to the Takagi-Taupin equations for strained single crystals.
A. Authier +15 more
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Scientific Reports, 2017 Renewed interest has been witnessed in utilizing the piezoelectric response of PbZr0.52Ti0.48O3 (PZT) films on glass substrates for applications such as adaptive optics.
Anuj Chopra +5 more
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Ray pencils of general divergency
African Vision and Eye Health, 2009 That a thin refracting element can have a dioptric power which is asymmetric immediately raises questions at the fundamentals of linear optics. In optometry the important concept of vergence, in particular, depends on the concept of a pencil of rays ...
W. F. Harris
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Extending the depth of focus of fiber-optic optical coherence tomography using a chromatic dual-focus design [PDF]
Applied Optics, 2018 We report a dual-focus fiber-optic probe designed to extend depth of focus (DOF) in high-resolution endoscopic optical coherence tomography. We exploited the broad spectral bandwidth of a supercontinuum source and, in the fiber probe, the foci of the 750-1000 nm and 1100-1450 nm inputs were axially chromatically shifted.
Jinhan Li +9 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Purpose Retinoblastoma (RB) is the most common pediatric ocular cancer, yet population‐based data on survival and risk factors remain limited. This study aimed to describe survival in a large national RB cohort and identify predictors of death and complications.
Samuel Sassine +14 more
wiley +1 more source
Probing half β_{y}^{*} optics in the Accelerator Test Facility 2
Physical Review Accelerators and Beams, 2016 A nanometer beam size at the interaction point (IP) is required for future linear colliders to achieve the desired rate of particle collisions. KEK Accelerator Test Facility 2 (ATF2), a scaled down implementation of the linear collider beam delivery ...
M. Patecki +10 more
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Light ray modulation controls optical system alignment [PDF]
, 1965 Light ray modulator maintains focus in optical system subject to severe thermal gradients, vibration and shock.
core +1 more source