Testing a high-power LED based light source for hyperspectral imaging microscopy

2017 ◽  
Author(s):  
Phiwat Klomkaew ◽  
Sam A. Mayes ◽  
Thomas C. Rich ◽  
Silas J. Leavesley
Keyword(s):  
Light Source ◽  
Hyperspectral Imaging ◽  
High Power ◽  
High Power Led

scholarly journals Analysis on High-Power Seaport LED Luminaire with Uniform Light Distribution Based on Optimized Lens and Heatsink

2021 ◽  
Vol 11 (9) ◽  
pp. 4035
Author(s):  
Jinsheon Kim ◽  
Jeungmo Kang ◽  
Woojin Jang
Keyword(s):  
Light Source ◽  
High Power ◽  
Heat Dissipation ◽  
Light Emitting Diode ◽  
Light Distribution ◽  
Light Sources ◽  
Led Light ◽  
High Power Led ◽  
Distribution Requirement ◽  
Lighting Application

In the case of light-emitting diode (LED) seaport luminaires, they should be designed in consideration of glare, average illuminance, and overall uniformity. Although it is possible to implement light distribution through auxiliary devices such as reflectors, it means increasing the weight and size of the luminaire, which reduces the feasibility. Considering the special environment of seaport luminaires, which are installed at a height of 30 m or more, it is necessary to reduce the weight of the device, facilitate replacement, and secure a light source with a long life. In this paper, an optimized lens design was investigated to provide uniform light distribution to meet the requirement in the seaport lighting application. Four types of lens were designed and fabricated to verify the uniform light distribution requirement for the seaport lighting application. Using numerical analysis, we optimized the lens that provides the required minimum overall uniformity for the seaport lighting application. A theoretical analysis for the heatsink structure and shape were conducted to reduce the heat from the high-power LED light sources up to 250 W. As a result of these analyses on the heat dissipation characteristics of the high-power LED light source used in the LED seaport luminaire, the heatsink with hexagonal-shape fins shows the best heat dissipation effect. Finally, a prototype LED seaport luminaire with an optimized lens and heat sink was fabricated and tested in a real seaport environment. The light distribution characteristics of this prototype LED seaport luminaire were compared with a commercial high-pressure sodium luminaire and metal halide luminaire.

scholarly journals Lifetime prediction of a multi-chip high-power LED light source based on artificial neural networks

2019 ◽  
Vol 12 ◽  
pp. 361-367 ◽  
Author(s):  
Hongwei Liu ◽  
Dandan Yu ◽  
Pingjuan Niu ◽  
Zanyun Zhang ◽  
Kai Guo ◽  
...  
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Light Source ◽  
High Power ◽  
Lifetime Prediction ◽  
Led Light ◽  
High Power Led ◽  
Artificial Neural

scholarly journals Research on illumination uniformity of high-power LED array light source

2018 ◽  
Author(s):  
Xiaolong Yu ◽  
Xueye Wei ◽  
Ou Zhang ◽  
Xinwei Zhang
Keyword(s):  
Light Source ◽  
High Power ◽  
Led Array ◽  
High Power Led

Copper Based Heat Slug Structure Variation Analysis on Heat Dissipation of High Power LED

2014 ◽  
Vol 1082 ◽  
pp. 340-343
Author(s):  
Vithyacharan Retnasamy ◽  
Zaliman Sauli ◽  
Rajendaran Vairavan ◽  
Hussin Kamarudin ◽  
Mukhzeer Mohamad Shahimin ◽  
...  
Keyword(s):  
Surface Area ◽  
Light Source ◽  
High Power ◽  
Heat Dissipation ◽  
Simulation Analysis ◽  
Variation Analysis ◽  
Single Chip ◽  
Structure Variation ◽  
Excess Heat ◽  
High Power Led

Excess heat generated by the high power LED package significantly impacts the performance and reliability of the light source. Significance of heat dissipation are influenced by each packaging component of high power LED. This paper demonstrates simulation analysis on single chip high power LED where the significance of the copper based heat slug structure on the heat dissipation was analyzed. The simulation analysis was carried out by using Ansys version 11 and heat dissipation of two types of heat slug structure, rectangular and cylindrical were compared. The outcome exhibited that the structure of the heat slug significantly influences the heat dissipation of LED chip due to its surface area.

High Power Red Laser Diode for Projector Light Source

2019 ◽  
pp. 1283
Author(s):  
Masato Hagimoto ◽  
Shintaro Miyamoto ◽  
Yuki Kimura ◽  
Haruki Fukai ◽  
Manabu Hashizume ◽  
...  
Keyword(s):  
Light Source ◽  
Laser Diode ◽  
High Power

scholarly journals Thermal conductivity performance of nanoporous plate for high-power LED lighting and power electronics

2019 ◽  
Vol 1309 ◽  
pp. 012016
Author(s):  
A D Kurilov ◽  
V V Belyaev ◽  
K D Nessemon ◽  
E D Besprozvannyi ◽  
A O Osin ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Power Electronics ◽  
High Power ◽  
Led Lighting ◽  
High Power Led

Photodynamic therapy with high-power LED mediated by erythrosine eliminates Enterococcus faecalis in planktonic forms

2017 ◽  
Vol 19 ◽  
pp. 348-351 ◽  
Author(s):  
Alberto Sabin Moura Borba ◽  
Sângela Maria da Silva Pereira ◽  
Mellyna Cavalcante Mendes Borba ◽  
Marco Aurélio Benini Paschoal ◽  
Rudys Rodolfo de Jesus Tavarez ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Enterococcus Faecalis ◽  
High Power ◽  
High Power Led

Visible-light communication using high-power LED panel-lamp and low-complexity MOSFET circuit

2021 ◽  
Vol 53 (1) ◽  
Author(s):  
Huamao Huang ◽  
Tianxiang Lan ◽  
Cheng Huang ◽  
Chao Wang ◽  
Chukun Huang ◽  
...  
Keyword(s):  
Visible Light ◽  
High Power ◽  
Visible Light Communication ◽  
Low Complexity ◽  
High Power Led
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