Results 71 to 80 of about 3,002 (158)

Two-photon lensless endoscope

Optics Express, 2013
We report a first demonstration of two-photon endoscopic imaging with a lensless endoscope. The endoscope probe is a double-clad bundle of single-mode fibers; point excitation and scanning is achieved by coherent combining of femtosecond light pulses propagating in the single-mode fibers; and back-scattered two-photon signal is collected through the ...
Andresen, Esben Ravn, Bouwmans, Géraud, Monneret, S., Rigneault, Herve   +3 more
openaire   +2 more sources

Aperture-encoded snapshot hyperspectral imaging with a lensless camera

APL Photonics, 2023
We present a lensless snapshot hyperspectral camera that is capable of hyperspectral imaging over a broad spectrum using a compact and low-cost hardware configuration.
Taeyoung Kim, Kyung Chul Lee, Nakkyu Baek, Hyesuk Chae, Seung Ah Lee   +4 more
doaj   +1 more source

Comparing image quality of synchrotron and laboratory nano‐CT scans: a round robin study

Journal of Synchrotron Radiation, Volume 33, Issue 2, Page 489-507, March 2026.
A multi‐facility round‐robin comparison of synchrotron‐ and laboratory‐based nano‐computed tomography using a standardized 3D phantom reveals superior resolution and acquisition speed at synchrotrons, while advanced laboratory systems achieve competitive image quality with extended scan times; phase contrast modalities further enhance structural ...
Simon Wittl, Simon Zabler, Jonas Fell, Julie Villanova, Pierre Lhuissier, Stefanie Hildebrandt, Hans-Georg Herrmann   +6 more
wiley   +1 more source

Adaptively coupled phase retrieval in multi‐peak Bragg coherent diffraction imaging

Journal of Applied Crystallography, Volume 59, Issue 1, Page 40-48, February 2026.
We present an adaptively coupled phase retrieval algorithm for multi‐peak Bragg coherent diffraction imaging. The technique uses the redundant information contained in separate Bragg peaks to detect and remove spurious signal.Recent advances in Bragg coherent diffraction imaging (BCDI) experimental techniques permit routine measurement of multiple ...
J. Nicholas Porter, Yueheng Zhang, Ross J. Harder, Barbara Frosik, Wonsuk Cha, Yuan Gao, Garth Williams, Joshua Miller, Nash Karrington, Andres Herrera, Anthony Rollett, Stephan Hruszkewycz, Richard L. Sandberg   +12 more
wiley   +1 more source

Diffractive lensless imaging with optimized Voronoi-Fresnel phase

, 2021
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.
Wolfgang Heidrich (137430), Qiang Fu (129583), Dong-Ming Yan (9033206)   +2 more
core   +1 more source

Techniques and Advances in Ultrafast Photography

Advanced Photonics Research, Volume 6, Issue 12, December 2025.
This review maps the fast‐growing field of ultrafast photography from early mechanical cameras to modern optical‐computational methods. It organizes techniques into four families (multishot passive/active; single‐shot passive/active), explains how they reach trillion‐frame‐per‐second speeds, compares capabilities and tradeoffs, and highlights ...
Chen Huang, Xin Zhang, Renjie Han, Jiaoyu Fan, Hui Jiang, Yiwen Zhang, Jinghua Yu, Jiamin Wang, Yi Chen, Junjie Sun, Fei Chen   +10 more
wiley   +1 more source

Single shot sub-micron lensless digital holographic microscopy

Journal of the European Optical Society-Rapid Publications
High-resolution lensless microscopy offers a compact and cost-effective alternative to traditional optical microscopy, with various applications such as biomedical imaging and wafer-level testing.
Battling André F., Bich Justin A., Bergmann Ralf B., Falldorf Claas   +3 more
doaj   +1 more source

Electrical Stimulation of Trigeminal Nerve at the Anterior Nasal Septum in Healthy Individuals and Patients With Olfactory Dysfunction

International Forum of Allergy &Rhinology, Volume 15, Issue 12, Page 1384-1392, December 2025.
ABSTRACT Background The intranasal trigeminal system contributes to the sense of smell. Its integrity in olfactory dysfunction (OD) may be crucial for future treatments. This study assessed trigeminal sensitivity in healthy individuals and patients with OD of different etiologies using electrical stimulation of the nasal mucosa.
Konstantinos Garefis, Susanne Weise, Pauline Hanslik, Coralie Mignot, Halina B. Stanley, Maxime Fieux, Camille Ferdenzi, Evangelia Tsakiropoulou, Clémentine Lipp, Arnaud Bertsch, Moustafa Bensafi, Iordanis Konstantinidis, Thomas Hummel   +12 more
wiley   +1 more source

Single-frame 3D fluorescence microscopy with ultraminiature lensless FlatScope

, 2017
FlatScope, a lensless microscope as thin as a credit card and small enough to sit on a fingertip, captures 3D fluorescence images.
Fan Ye, Adams, Jesse K., Boominathan, Vivek, Ye, Fan, Jesse K. Adams, Avants, Benjamin W., Vivek Boominathan, Robinson, Jacob T., Vercosa, Daniel G., Baraniuk, Richard G., Daniel G. Vercosa, Ashok Veeraraghavan, Benjamin W. Avants, Jacob T. Robinson, Richard G. Baraniuk, Veeraraghavan, Ashok   +15 more
core   +1 more source

Aberration Correction and Speckle Noise Reduction in Image Minified Lensless Holographic Projection Based on Digital Micro-Mirror Device

IEEE Photonics Journal
Lensless holographic projection technology allows for removing of the projection lens and simplifies the optical projection system. It has great potential to be applied in the fields of three-dimensional printing, integrated circuit fabrication, and ...
Xingjian Li, Bizhong Xia, Haibei Wang, Ping Su   +3 more
doaj   +1 more source