Results 21 to 30 of about 666,055 (319)

Optical Design of a Miniaturized Airborne Push-Broom Spectrometer

Applied Sciences, 2020
Combining the requirements of spectrometers for unmanned aerial vehicle platforms, a miniaturized airborne wide-angle push-broom imaging spectrometer with an Offner configuration is designed.
Yang Wang, Zhiyuan Gu, Xiangyue Meng, Lei Zhang, Yuegang Fu   +4 more
doaj   +1 more source

Wide Field-of-View, High-Resolution Endoscopic Lens Design with Low F-Number for Disposable Endoscopy

Photonics, 2021
In the past few decades, video endoscopy has become one of the primary medical devices in diverse clinical fields for examination, treatment, and early disease diagnosis of the gastrointestinal tract.
Dongmok Kim, Sehui Chang, Hyuk-Sang Kwon
doaj   +1 more source

Optical High-Capacity Satellite Downlinks via High-Altitude Platform Relays

, 2007
Earth-observation (EO) satellite missions produce a large amount of data using high-resolution optical or radar sensors. During the last decades the amount of data has steadily increased due to improved sensor technologies with increased temporal ...
Florian Moll, Bischl, Hermann, Markus Knapek, Giggenbach, Dirk, Joachim Horwath, Horwath, Joachim, Courville, Nicolas, Knapek, Markus, Bernd Epple, Moll, Florian, Nicolas Courville, Hermann Bischl, Epple, Bernhard, Dirk Giggenbach   +13 more
core   +1 more source

Phantoms for performance assessment of optical coherence tomography systems [PDF]

, 2012
In this paper, we describe the procedures to make epoxy resin and agarose phantoms designed using Mie scattering calculations. The phantoms are constructed to be used in the estimation of point spread function (PSF) of an optical coherence tomography ...
S. A. Hojjatoleslami, Corr, S.A., Podoleanu, A.G., Price, M.C., Podoleanu, Adrian Gh., Avanaki, M.R.N., Avanaki, Mohammad R.N., Mazrae Khoshki, R., Mark C. Price, Rohollah Mazraeh Khoshki, Price, Mark C., Adrian G. Podoleanu, Mohammad R. N. Avanaki, Corr, Serena A., Khoshki, Rohollah Mazraeh, Serena A. Corr, Hojjatoleslami, S.A.   +16 more
core   +1 more source

A Novel Method of Wireless Data Transfer Through a Variable Focus Lens-Induced Irradiance Modulation of a Gaussian Beam

IEEE Access, 2017
Mindful of several recent developments in the area of wireless optical data transfer over long and short distances, we present a novel technique to transmit data using an optical carrier.
Syed Azer Reza, Muhammad Assad Arshad
doaj   +1 more source

Broadband Backhaul Communication for Stratospheric Platforms: The Stratospheric Optical Payload Experiment (STROPEX)

, 2006
A high bitrate optical downlink was performed by the stratospheric optical payload experiment (STROPEX), a part of the EU CAPANINA project. The STROPEX objectives were to design and build the necessary hardware to demonstrate an optical backhaul downlink
Knapek, Markus, Markus Knapek, Martin Brechtelsbauer, Joachim Horwath, Horwath, Joachim, Wilkerson, Brandon, Brandon Wilkerson, Brechtelsbauer, Martin, Bernhard Epple, Epple, Bernhard   +9 more
core   +1 more source

Stimulated Raman scattering microscopy with phase-controlled light focusing and aberration correction for rapid and label-free, volumetric deep tissue imaging

Opto-Electronic Advances
We report a novel stimulated Raman scattering (SRS) microscopy technique featuring phase-controlled light focusing and aberration corrections for rapid, deep tissue 3D chemical imaging with subcellular resolution.
Weiqi Wang, Zhiwei Huang
doaj   +1 more source

A Novel Focal Length Measurement Method for Center-Obstructed Omni-Directional Reflective Optical Systems

Applied Sciences, 2019
An omni-directional optical system can be used as a surveillance camera owing to its wide field angle. In cases in which a system is designed with a central screen obscuring structure to increase the resolution of the off-axis field, however, the ...
Hojong Choi, Joo-Youn Jo, Jae-Myung Ryu
doaj   +1 more source

Optical Design of an LED Lighting Source for Fluorescence Microscopes

Applied Sciences, 2019
In this study, we reveal an LED light source model applied in fluorescence microscopes. This optical model is composed of a confocal total internal reflection lens array system (CTLAS) with a nine-LED array.
Tai-Chih Kuo, Ting-Jou Ding, Jui-Hui Lin, Shih-Hsin Ma   +3 more
doaj   +1 more source

Illuminance and Starting Distance of the Far Field of LED-Array Luminaire Operated at Short Working Distance

Crystals, 2020
A luminaire with a light-emitting diode (LED) array can provide hotspot illumination in a short range. Therefore, a design of a luminaire with the largest central illuminance (LCI) and a high uniformity is warranted.
Ching-Cherng Sun, Yi-Syuan Lin, Tsung-Hsun Yang, Shih-Kang Lin, Xuan-Hao Lee, Chi-Shou Wu, Yeh-Wei Yu   +6 more
doaj   +1 more source