Results 11 to 20 of about 1,870,110 (224)
Large-area, high-numerical-aperture multi-level diffractive lens via inverse design [PDF]
Optica, 2020 Flat lenses enable thinner, lighter, and simpler imaging systems. However, large-area and high-NA flat lenses have been elusive due to computational and fabrication challenges. Here, we applied inverse design to create a multi-level diffractive lens (MDL)
Monjurul Meem +6 more
semanticscholar +3 more sources
Machine learning enables the design of a bidirectional focusing diffractive lens.
Optics Letters, 2023 Machine learning can efficiently empower the inverse design of cascaded diffractive optical elements. In this work, we explore the inverse design of a bidirectional focusing diffractive lens in a cascaded configuration through the diffractive optical ...
W. Jia +3 more
semanticscholar +3 more sources
International Journal of Advanced Manufacturing Technology, 2021 In this study, a new cost-effective and high-precision process chain for the fabrication of large-scale infrared (IR) diffractive lens arrays on chalcogenide glass is proposed.
Yang Shu +4 more
semanticscholar +3 more sources
Diffractive lens fabricated with binary features less than 60 nm [PDF]
Optics Letters, 2000 We designed, fabricated, and characterized a binary diffractive lens with features less than 60nm. The lens was designed for operation in the red portion of the spectrum.
Dial, Oliver +4 more
core +3 more sources
Multifocal diffractive lens generating several fixed foci at different design wavelengths. [PDF]
Optics Express, 2018 We propose a method for designing multifocal diffractive lenses generating prescribed sets of foci with fixed positions at several different wavelengths.
L. Doskolovich +5 more
semanticscholar +3 more sources
Self-wavefront interference using transverse splitting holography
Results in Physics, 2023 Manufacturing diffractive lenses with a high Numerical Aperture (NA) is a challenging task due to limitations in lithography methods and the inverse relation between the width and the radius of the zones.
Andrei-ioan Bleahu +8 more
doaj +1 more source
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 +3 more
doaj +1 more source
Multifocal multilevel diffractive lens by wavelength multiplexing.
Applied Optics, 2023 Flat lenses with focal length tunability can enable the development of highly integrated imaging systems. This work explores machine learning to inverse design a multifocal multilevel diffractive lens (MMDL) by wavelength multiplexing. The MMDL output is
W. Jia +3 more
semanticscholar +1 more source
Laser seeker design with multi-focal diffractive lens
Engineering Research Express, 2023 Diffractive optical elements are increasingly favoured due to their ability to provide numerous design freedoms by adjusting the Fresnel regions.
A. Ünal
semanticscholar +1 more source