Results 1 to 10 of about 16,352,078 (311)

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

High Dk piggyback contact lens system for contact lens-intolerant keratoconus patients

open access: yesClinical Ophthalmology, 2011
Tomris Sengor, Sevda Aydin Kurna, Suat Aki, Yelda ÖzkurtFatih Sultan Mehmet Training and Research Hospital, Istanbul, TurkeyBackground: The aim of the study was to examine the clinical success of high Dk (oxygen permeability) piggyback contact ...
Tomris Sengor   +3 more
doaj   +2 more sources

Daylighting System Based on Novel Design of Linear Fresnel lens

open access: yesBuildings, 2017
In this paper, we present a design and optical simulation of a daylighting system using a novel design of linear Fresnel lens, which is constructed based on the conservation of optical path length and edge ray theorem. The linear Fresnel lens can achieve
Thanh Tuan Pham   +2 more
doaj   +3 more sources

New type of antidrying lens for vitreous surgery with a noncontact wide-angle viewing system

open access: yesClinical Ophthalmology, 2013
Tomoyuki Chihara,1 Mihori Kita21Department of Ophthalmology, Hyogo Prefectural Amagasaki Hospital, Hyogo, 2Department of Ophthalmology, National Hospital Organization Kyoto Medical Center, Kyoto, JapanAbstract: Drying of the cornea during surgery, which ...
Chihara T, Kita M
doaj   +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

A Study on the Design and Simulation of a 600 dpi Master F-Theta Lens [PDF]

open access: yes한국정밀공학회지, 2020
This study is about the design and simulation of an f-theta lens, one of the main components used in laser printers and laser scanning systems. To design an f-theta lens, the optical paths of the components of the laser scanning unit, the f-theta lens ...
Yong-Woo Park, Jae-Ung Cho, Sung-Ki Lyu
doaj   +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

Movable electrowetting optofluidic lens for optical axial scanning in microscopy

open access: yesOpto-Electronic Advances, 2019
Optical axial scanning is essential process to obtain 3D information of biological specimens. To realize optical axial scanning without moving, the tunable lens is a solution.
Li Lei   +3 more
doaj   +1 more source

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