Results 61 to 70 of about 1,870,110 (224)

Multiwavelength Achromatic Metasurfaces by Dispersive Phase Compensation

, 2015
The replacement of bulk refractive optical elements with diffractive planar components enables the miniaturization of optical systems. However, diffractive optics suffers from large chromatic aberrations due to the dispersion of the phase accumulated by ...
Aieta, Francesco, Capasso, Federico, Genevet, Patrice, Kats, Mikhail A.   +3 more
core   +1 more source

Extreme Refractive-, Diffractive- and Hybrid-Hyperchromats: Minimizing the Equivalent Abbe Number of a Two-Lens System

Photonics, 2023
This work provides a comprehensive analysis of the maximum chromatic axial split of two-element hyperchromats, with the distance between the two lenses being a key variable.
Lukas Werner, Erik Förster, Matthias Kraus, Hartmut Hillmer, Robert Brunner   +4 more
doaj   +1 more source

Optical lithography [PDF]

, 2019
Optical lithography is a photon-based technique comprised of projecting an image into a photosensitive emulsion (photoresist) coated onto a substrate such as a silicon wafer. It is the most widely used lithography process in the high volume manufacturing
Antonsen, Attwood, Bennett, Born, Carter, Choi, Cummings, Felix, Fujioka, Goodman, Goodman, Harilal, Hoffnagle, Hosler, Jenkins, Kawata, Kim, Levinson, Lim, Mack, Meiling, Miyamatsu, Mizoguchi, Namba, Ohmura, Oizumi, Owa, Purvis, Rim, Schafgans, Schellenberg, Suzuki, Tsarfati, Turkot, Underwood, van Es, van Schoot, Vargas López, Yen, Zhang   +39 more
core   +2 more sources

Computational Imaging for Simultaneous Image Restoration and Super-Resolution Image Reconstruction of Single-Lens Diffractive Optical System

Applied Sciences, 2022
Diffractive optical elements (DOEs) are difficult to apply in natural scenes imaging covering the visible bandwidth-spectral due to their strong chromatic aberration and the decrease in diffraction efficiency.
Kai Liu, Xiao Yu, Yongsen Xu, Yulei Xu, Yuan Yao, Nan Di, Yefei Wang, Hao Wang, Honghai Shen   +8 more
doaj   +1 more source

Common-path interferometer with diffractive lens

Optics Express, 2006
We introduce a novel common-path interferometric measurement setup for optical quality testing. The setup is based on an optimized diffractive lens which produces two diffraction orders with equal efficiency and thus forms two interfering beams without any beam splitting or mirror alignments.
Henna, Elfström, Anni, Lehmuskero, Toni, Saastamoinen, Markku, Kuittinen, Pasi, Vahimaa   +4 more
openaire   +2 more sources

Refractive lens exchange with a multifocal diffractive aspheric intraocular lens [PDF]

Arquivos Brasileiros de Oftalmologia, 2012
To evaluate the safety, efficacy and predictability after refractive lens exchange with multifocal diffractive aspheric intraocular lens implantation.Sixty eyes of 30 patients underwent bilateral implantation with AcrySof(®) ReSTOR(®) SN6AD3 intraocular lens with +4.00 D near addition. Patients were divided into myopic and hyperopic groups.
Ferrer-Blasco, Teresa, García-Lázaro, Santiago, Albarrán-Diego, César, Belda-Salmerón, Lurdes, Montés-Micó, Robert   +4 more
openaire   +4 more sources

All-optical atom surface traps implemented with one-dimensional planar diffractive microstructures [PDF]

, 2006
We characterize the loading, containment and optical properties of all-optical atom traps implemented by diffractive focusing with one-dimensional (1D) microstructures milled on gold films.
H. J. Lezec, J. Weiner, O. Alloschery, R. Mathevet   +3 more
core   +2 more sources

Objective and subjective evaluation of trifocal diffractive intraocular Lens after cataract extraction with phacoemulsification: a prospective clinical study

BMC Ophthalmology, 2021
Background This study aimed to assess visual outcomes, quality of vision and patients’ satisfaction of a trifocal diffractive intraocular lens after cataract surgery with phacoemulsification. Results The study included 36 eyes that underwent implantation
Ahmed A. Zein El-Dein, Ahmed Elmassry, Hazem M. El-Hennawi, Ehab F. Mossallam   +3 more
doaj   +1 more source

A Color Restoration Algorithm for Diffractive Optical Images of Membrane Camera

Sensors, 2021
In order to verify the technology of the membrane diffractive imaging system for Chinese next generation geo-stationary earth orbit (GEO) satellite, a series of ground experiments have been carried out using a membrane optical camera with 80 mm aperture (
Yanlei Du, Xiaofeng Yang, Yiping Ma, Chunxue Xu   +3 more
doaj   +1 more source

Diffractive Microlensing I: Flickering Planetesimals at the Edge of the Solar System

, 2009
Microlensing and occultation are generally studied in the geometric optics limit. However, diffraction may be important when recently discovered Kuiper-Belt objects (KBOs) occult distant stars.
Agol, Bailey, Bailey, Bickerton, Brown, Brown, Brown, Gaudi, Gradshteyn, Jaroszynski, Jeremy Heyl, Jewitt, Kuiper, Oort, Roques, Roques, Roques, Roques, Roques, Schneider, Stansberry, Udalski   +21 more
core   +1 more source