Results 21 to 30 of about 1,860,088 (200)
Lensless polarization camera for single-shot full-Stokes imaging
APL Photonics, 2022 Lensless cameras have recently emerged as a compact imaging system based on computational imaging with various multiplexing capabilities. Here, we propose a compact, low-cost, lensless camera that enables snapshot full-Stokes polarization imaging.
Nakkyu Baek +4 more
doaj +1 more source
Active metasurface designs for lensless and detector-limited imaging. [PDF]
NanophotonicsAbstract The emergence of metasurfaces has enabled lightweight, compact imaging with degrees of freedom which previously required complex optical setups to achieve, such as polarization, wave vector, and spectrum. To date, most metasurface‐enabled imaging systems have thus far been ‘passive’, and therefore subject to fundamental information and ...
Belleville J, Thureja P, Atwater HA.
europepmc +2 more sources
Nature Communications, 2022 Lensless fibre endoscopes are minimally invasive, but are often rigid and require calibration and fluorescence labelling. Here, the authors present a flexible endoscope based on a bare fibre bundle and a lensless Fourier holographic imaging configuration
Wonjun Choi +7 more
doaj +1 more source
Development of a Lensless Compact Optical System for Ultrasensitive Nanomaterial Detection in Liquid Media via Exploiting Multiple Light Scattering [PDF]
NanophotonicsThis work presents a lensless speckle‐based platform that exploits multiple light scattering for precise nanoparticle detection in liquid media. The proposed method enables ultrasensitive detection at concentrations far below conventional DLS limits and provides semiquantitative size estimation, offering a cost‐effective and field‐deployable approach ...
Kim J +9 more
europepmc +2 more sources
Optics Express, 2017 Lensless quantitative phase imaging is of high interest for obtaining a large field of view (FOV), typically the size of the camera chip, to observe biological cell material with high contrast. It has the potential to be widely spread due to its inherent simplicity. However, the tradeoff is the added complexity due to the illumination.
Rostykus, Manon +3 more
openaire +3 more sources
Multi-view in lensless compressive imaging [PDF]
APSIPA Transactions on Signal and Information Processing, 2013 Accepted for presentation at PCS 2013 as Paper #1021; 4 pages, 4 figures.
Hong Jiang 0002 +2 more
openaire +3 more sources
Diffractive lensless imaging with optimized Voronoi-Fresnel phase [PDF]
, 2022 Lensless cameras are a class of imaging devices that shrink the physical dimensions to the very close vicinity of the image sensor by replacing conventional compound lenses with integrated flat optics and computational algorithms.
Yan, Dong-Ming +2 more
core +1 more source
Super Field-of-View Lensless Camera by Coded Image Sensors
Sensors, 2019 A lensless camera is an ultra-thin computational-imaging system. Existing lensless cameras are based on the axial arrangement of an image sensor and a coding mask, and therefore, the back side of the image sensor cannot be captured.
Tomoya Nakamura +3 more
doaj +1 more source
Sensors, 2023 Lensless holographic microscopy (LHM) comes out as a promising label-free technique since it supplies high-quality imaging and adaptive magnification in a lens-free, compact and cost-effective way.
José Ángel Picazo-Bueno +4 more
doaj +1 more source