scholarly journals Accurate thin-film measurement method based on a distribution of laser intensity emitted from optical fiber: Proposal of step light emitted model for ray-tracing simulation

2020 ◽  
Vol 6 (0) ◽  
pp. 20-00419-20-00419
Author(s):  
Kampei YAMAGUCHI ◽  
Toshiyuki SANADA ◽  
Yuki MIZUSHIMA
Keyword(s):  
Thin Film ◽  
Optical Fiber ◽  
Ray Tracing ◽  
Measurement Method ◽  
Laser Intensity ◽  
Ray Tracing Simulation

scholarly journals 0501 3D-Ray-Tracing Simulation of Optical Fiber Probing in Bubble/droplet Measurement

2012 ◽  
Vol 2012 (0) ◽  
pp. 207-208
Author(s):  
Hajime FURUICHI ◽  
Yuki MIZUSHIMA ◽  
Akihiro SAKAMOTO ◽  
Takayuki SAITO
Keyword(s):  
Optical Fiber ◽  
Ray Tracing ◽  
3D Ray Tracing ◽  
Ray Tracing Simulation

Preparation of Bi‐Doped ZnO Thin Film over Optical Fiber and Their Application as Detection of Ethylenediamine in an Aqueous Medium Based on the Evanescent Field Technique

2020 ◽  
Vol 217 (24) ◽  
pp. 2000537
Author(s):  
Shailendra Kr. Singh ◽  
Uttam Kr. Samanta ◽  
Anirban Dhar ◽  
Mrinmay Pal ◽  
Mukul Chandra Paul
Keyword(s):  
Thin Film ◽  
Optical Fiber ◽  
Aqueous Medium ◽  
Evanescent Field ◽  
Zno Thin Film ◽  
Field Technique ◽  
Doped Zno

scholarly journals Investigating Intense Rainfall Influence on Distance Measurement with a Time-of-Flight Camera Sensor Using Optical Ray-Tracing Simulation Technique

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 1056
Author(s):  
Marcus Baumgart ◽  
Norbert Druml ◽  
Markus Dielacher ◽  
Cristina Consani
Keyword(s):  
Ray Tracing ◽  
Time Of Flight ◽  
Autonomous Driving ◽  
Intense Rainfall ◽  
Signal Suppression ◽  
Tof Camera ◽  
Ray Tracing Simulation ◽  
Camera Sensors ◽  
Optical Ray Tracing ◽  
Rain Effect

Robust, fast and reliable examination of the surroundings is essential for further advancements in autonomous driving and robotics. Time-of-Flight (ToF) camera sensors are a key technology to measure surrounding objects and their distances on a pixel basis in real-time. Environmental effects, like rain in front of the sensor, can influence the distance accuracy of the sensor. Here we use an optical ray-tracing based procedure to examine the rain effect on the ToF image. Simulation results are presented for experimental rain droplet distributions, characteristic of intense rainfall at rates of 25 mm/h and 100 mm/h. The ray-tracing based simulation data and results serve as an input for developing and testing rain signal suppression strategies.

Analysis of a Hybrid PV/T Concept Based on Wavelength Selective Films

2013 ◽  
Author(s):  
Tejas U. Ulavi ◽  
Jane H. Davidson ◽  
Tim Hebrink
Keyword(s):  
Thin Film ◽  
Monte Carlo ◽  
Total Energy ◽  
Ray Tracing ◽  
Solar Spectrum ◽  
Photovoltaic Module ◽  
Optical Performance ◽  
Technical Performance ◽  
Compound Parabolic Concentrator ◽  
Pv Modules

The technical performance of a non-tracking hybrid PV/T concept that uses a wavelength selective film is modeled. The wavelength selective film is coupled with a compound parabolic concentrator to reflect and concentrate the infrared portion of the solar spectrum onto a tubular absorber while transmitting the visible portion of the spectrum to an underlying thin-film photovoltaic module. The optical performance of the CPC/selective film is obtained through Monte Carlo Ray-Tracing. The CPC geometry is optimized for maximum total energy generation for a roof-top application. Applied to a rooftop in Phoenix, Arizona USA, the hybrid PV/T provides 20% more energy compared to a system of the same area with independent solar thermal and PV modules, but the increase is achieved at the expense of a decrease in the electrical efficiency from 8.8% to 5.8%.

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