Results 1 to 10 of about 26,565,981 (193)

Miniscope GRIN Lens System for Calcium Imaging of Neuronal Activity from Deep Brain Structures in Behaving Animals. [PDF]

open access: yesCurr Protoc Neurosci, 2019
Visualizing neural activity from deep brain regions in freely behaving animals through miniature fluorescent microscope (miniscope) systems is becoming more important for understanding neural encoding mechanisms underlying cognitive functions.
Zhang L   +9 more
europepmc   +2 more sources

Design of a Hybrid Refractive/Diffractive Lens System for Broadband UV [PDF]

open access: yesSensors, 2022
Traditional broadband UV optical designs often have complex structural problems and cannot meet the current requirements of light and miniaturization.
Yuan Hu, Jiaqi Huo, Binpeng Cheng
doaj   +2 more sources

Metasurface folded lens system for ultrathin cameras. [PDF]

open access: yesSci Adv
Slim cameras are essential in state-of-the-art consumer electronics such as smartphones or augmented/virtual reality devices. However, reducing the camera thickness faces challenges primarily due to the thick lens systems.
Kim Y   +7 more
europepmc   +2 more sources

STRIDES: a 3.9 per cent measurement of the Hubble constant from the strong lens system DES J0408−5354 [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2019
We present a blind time-delay cosmographic analysis for the lens system DES J0408−5354. This system is extraordinary for the presence of two sets of multiple images at different redshifts, which provide the opportunity to obtain more information at the
Anowar J. Shajib   +90 more
semanticscholar   +1 more source

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

open access: yesOptics, 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   +3 more
doaj   +1 more source

H0LiCOW – X. Spectroscopic/imaging survey and galaxy-group identification around the strong gravitational lens system WFI 2033−4723 [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2019
Galaxies and galaxy groups located along the line of sight towards gravitationally lensed quasars produce high-order perturbations of the gravitational potential at the lens position.
Dominique Sluse   +67 more
semanticscholar   +1 more source

Towards Language Models That Can See: Computer Vision Through the LENS of Natural Language [PDF]

open access: yesarXiv.org, 2023
We propose LENS, a modular approach for tackling computer vision problems by leveraging the power of large language models (LLMs). Our system uses a language model to reason over outputs from a set of independent and highly descriptive vision modules ...
William Berrios   +4 more
semanticscholar   +1 more source

Beyond the Channels: Adhesion Functions of Aquaporin 0 and Connexin 50 in Lens Development

open access: yesFrontiers in Cell and Developmental Biology, 2022
Lens, an avascular tissue involved in light transmission, generates an internal microcirculatory system to promote ion and fluid circulation, thus providing nutrients to internal lens cells and excreting the waste.
Zhen Li   +4 more
doaj   +1 more source

Holographic Zoom System With Large Focal Depth Based on Adjustable Lens

open access: yesIEEE Access, 2020
In this paper, we propose a holographic zoom system based on two adjustable lenses. Different from the traditional holographic system, a digital conical lens and a liquid lens are used as the zoomable lenses.
Di Wang   +3 more
doaj   +1 more source

A High-Precision Real-Time Pose Measurement Method for the Primary Lens of Large Aperture Space Telescope Based on Laser Ranging

open access: yesSensors, 2023
The aperture of space telescopes increases with their required resolution, and the transmission optical systems with long focal length and diffractive primary lens are becoming increasingly popular.
Heng Shi   +7 more
doaj   +1 more source

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