scholarly journals Short pulse and high power RF-CO2 laser for EUV light source

2006 ◽  
Vol 34 (Supplement) ◽  
pp. 78-79
Author(s):  
Tatsuya Ariga
Keyword(s):  
Light Source ◽  
Co2 Laser ◽  
High Power ◽  
Short Pulse

scholarly journals Toward little heat-affected area of fused silica materials using short pulse and high power CO2 laser

2019 ◽  
Vol 12 ◽  
pp. 1363-1371 ◽  
Author(s):  
Linjie Zhao ◽  
Jian Cheng ◽  
Mingjun Chen ◽  
Xiaodong Yuan ◽  
Wei Liao ◽  
...  
Keyword(s):  
Co2 Laser ◽  
High Power ◽  
Short Pulse ◽  
Fused Silica ◽  
Affected Area ◽  
Silica Materials

High power and short pulse RF-excited CO 2 laser MOPA system for LLP EUV light source

2006 ◽  
Author(s):  
Tatsuya Ariga ◽  
Hideo Hoshino ◽  
Taisuke Miura ◽  
Akira Endo
Keyword(s):  
Light Source ◽  
High Power ◽  
Short Pulse

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 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 Development of Large Surface Hardening Method for Carbon Steel with High Power CO2 Laser (1st Report)

1997 ◽  
Vol 63 (8) ◽  
pp. 1138-1142
Author(s):  
Masashi OIKAWA ◽  
Hiroyuki YAMAMOTO ◽  
Katsuhiro MINAMIDA ◽  
Hiromichi KAWASUMI
Keyword(s):  
Carbon Steel ◽  
Co2 Laser ◽  
High Power ◽  
Surface Hardening

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
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