Impact of Camera Lens Aperture and the Light Source Size on Optical Camera Communications

Author(s):  
Navid Bani Hassan ◽  
Yingjia Huang ◽  
Zhenyi Shou ◽  
Zabih Ghassemlooy ◽  
Alessandro Sturniolo ◽  
...  
2016 ◽  
Vol 23 (5) ◽  
pp. 1137-1142 ◽  
Author(s):  
Elena Eggl ◽  
Martin Dierolf ◽  
Klaus Achterhold ◽  
Christoph Jud ◽  
Benedikt Günther ◽  
...  

While large-scale synchrotron sources provide a highly brilliant monochromatic X-ray beam, these X-ray sources are expensive in terms of installation and maintenance, and require large amounts of space due to the size of storage rings for GeV electrons. On the other hand, laboratory X-ray tube sources can easily be implemented in laboratories or hospitals with comparatively little cost, but their performance features a lower brilliance and a polychromatic spectrum creates problems with beam hardening artifacts for imaging experiments. Over the last decade, compact synchrotron sources based on inverse Compton scattering have evolved as one of the most promising types of laboratory-scale X-ray sources: they provide a performance and brilliance that lie in between those of large-scale synchrotron sources and X-ray tube sources, with significantly reduced financial and spatial requirements. These sources produce X-rays through the collision of relativistic electrons with infrared laser photons. In this study, an analysis of the performance, such as X-ray flux, source size and spectra, of the first commercially sold compact light source, the Munich Compact Light Source, is presented.


2012 ◽  
Vol 90 ◽  
pp. 0-0
Author(s):  
Y JIA ◽  
G BARGARY ◽  
JL BARBUR

2015 ◽  
Vol 4 (4) ◽  
Author(s):  
Takashi Sato ◽  
Akiko Yamada ◽  
Takeshi Suto

AbstractUsing a simulation, we investigate the effects of the light source size and derive an effective method for suppression of the subfringes that appear in ArF Talbot lithography, which has been proposed for submicron pattern transfer applications. The appearance of the subfringes, which were caused by interference, was related to the size of the light source. If an appropriate light source size is chosen, then, a large process window can be obtained. Guidelines for source size selection are given.


2019 ◽  
Vol 44 (7) ◽  
pp. 1817 ◽  
Author(s):  
Azeem Ahmad ◽  
Tanmoy Mahanty ◽  
Vishesh Dubey ◽  
Ankit Butola ◽  
Balpreet Singh Ahluwalia ◽  
...  

2020 ◽  
Vol 44 (5) ◽  
pp. 712-720
Author(s):  
E.V. Byzov ◽  
S.V. Kravchenko ◽  
M.A. Moiseev ◽  
L.L. Doskolovich

A method for designing an optical element with two free-form surfaces generating a prescribed illuminance distribution in the case of an extended light source is considered. The method is based on the representation of the optical element surfaces by bicubic splines and on the subsequent optimization of their parameters using a quasi-Newton method implemented in the Matlab software. To calculate the merit function, a version of the ray tracing method is proposed. Using the proposed method, an optical element with record characteristics was designed: the ratio of the element height to the source size is 1.6; luminous efficiency is 89.1 %; uniformity of the generated distribution (the ratio of the minimum and average illuminance) in a given square region is 0.92.


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