Results 11 to 20 of about 526,651 (246)

Dynamic freeform diffractive lens [PDF]

, 2023
In the framework of the scalar theory of diffraction a surface-pixeled convergent lens for arbitrary amplitude and phase modulation along the depth of focus is introduced.
Mendoza-Yero, Omel
core   +2 more sources

Transferability of Diffractive Structure in the Compression Molding of Chalcogenide Glass

Micromachines, 2023
This study investigates the use of Ge28Sb12Se60 chalcogenide glass for the compression molding of an infrared optical lens with a diffractive structure.
Byeong-Rea Son, Ji-Kwan Kim, Young-Soo Choi, Changsin Park   +3 more
doaj   +1 more source

Clinical outcome of diffractive multifocal lens versus monofocal lens in post-laser in situ keratomileusis patients: A retrospective, comparative study

Indian Journal of Ophthalmology, 2023
Purpose: To compare the clinical outcomes of diffractive multifocal and monofocal lenses in post-laser in situ keratomileusis (LASIK) patients who underwent cataract surgery.
Anny M S Cheng, Han Y Yin, Connor Davenport, Keith Walter   +3 more
doaj   +1 more source

An achromatic X-ray lens

Nature Communications, 2022
X-ray diffractive and refractive optical elements suffer from chromatic aberrations, limiting high-resolution X-ray microscopes mainly to bright synchrotron sources.
Adam Kubec, Marie-Christine Zdora, Umut T. Sanli, Ana Diaz, Joan Vila-Comamala, Christian David   +5 more
doaj   +1 more source

Minimal focal spot obtained by focusing circularly polarized light

Компьютерная оптика, 2023
In this paper, using the Richards-Wolf equations, we analyze focusing circularly polarized light with flat diffractive lenses. It is shown that as the numerical aperture of the lens increases, the size of the focal spot first decreases and then begins to
S.S. Stafeev, V.D. Zaitcev, V.V. Kotlyar
doaj   +1 more source

Visualization of Ray Propagation through Extended Depth-of-Focus Intraocular Lenses

Diagnostics, 2022
Extended depth-of-focus (EDoF) presbyopia-correcting intraocular lens (IOL) models differ in their optical design and performance. In the laboratory, we compared the ray propagation and light intensity profiles of four IOLs: the non-diffractive AcrySof ...
Isabella D. Baur, Gerd U. Auffarth, Weijia Yan, Grzegorz Łabuz, Ramin Khoramnia   +4 more
doaj   +1 more source

A theoretical framework for general design of two-materials composed diffractive fresnel lens

Scientific Reports, 2021
Near 100% of diffractive efficiency for diffractive optical elements (DOEs) is one of the most required optical performances in broadband imaging applications.
Ming-Yen Lin, Chih-Hao Chuang, Tzu-An Chou, Chien-Yu Chen   +3 more
doaj   +1 more source

Spectral Effects and Range of Focus in a Multizonal-Refractive Intraocular Lens Compared with a Standard Trifocal Diffractive Design

Ophthalmology and Therapy, 2023
Introduction This study was performed to compare the optical performance of a multizonal presbyopia-correcting intraocular lens (IOL) and a conventional trifocal model.
Weijia Yan, Gerd U. Auffarth, Ramin Khoramnia, Grzegorz Łabuz   +3 more
doaj   +1 more source

STUDY ON HIGH RESOLUTION MEMBRANE-BASED DIFFRACTIVE OPTICAL IMAGING ON GEOSTATIONARY ORBIT [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Diffractive optical imaging technology provides a new way to realize high resolution earth observation on geostationary orbit. There are a lot of benefits to use the membrane-based diffractive optical element in ultra-large aperture optical imaging ...
J. Jiao, B. Wang, C. Wang, Y. Zhang, J. Jin, Z. Liu, Y. Su, N. Ruan   +7 more
doaj   +1 more source

Design of Refractive/Diffractive Hybrid Projection Lens for DMD-Based Maskless Lithography

Optics, 2021
The projection lens is the core component of DMD-based maskless lithography and its imaging quality directly affects the transferal of exposure pattern.
Zhuohui Xu, Jinyun Zhou, Bo Wang, Ziming Meng   +3 more
doaj   +1 more source