Optical design of dental light using a remote phosphor light-emitting diode package for improving illumination uniformity

2018 ◽  
Vol 57 (21) ◽  
pp. 5998 ◽  
Author(s):  
Sie-Wook Jeon ◽  
Sunghyun Kim ◽  
Jina Choi ◽  
Inseok Jang ◽  
Younghyun Song ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Optical Design ◽  
Light Emitting ◽  
Remote Phosphor

scholarly journals Trapped whispering-gallery optical modes in white light-emitting diode lamps with remote phosphor

2006 ◽  
Vol 89 (4) ◽  
pp. 041125 ◽  
Author(s):  
Hong Luo ◽  
Jong Kyu Kim ◽  
Yangang Andrew Xi ◽  
E. Fred Schubert ◽  
Jaehee Cho ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Whispering Gallery ◽  
Remote Phosphor ◽  
Optical Modes

Optical design of a light-emitting diode lamp for a maritime lighthouse

2015 ◽  
Vol 54 (11) ◽  
pp. 3252 ◽  
Author(s):  
D. Jafrancesco ◽  
L. Mercatelli ◽  
P. Sansoni ◽  
D. Fontani ◽  
E. Sani ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Optical Design ◽  
Light Emitting

Analysis of high-power packages for white-light-emitting diode lamps with remote phosphor

2005 ◽  
Vol 892 ◽  
Author(s):  
Hong Luo ◽  
Jong Kyu Kim ◽  
Yangang Xi ◽  
E. Fred Schubert ◽  
Jaehee Cho ◽  
...  
Keyword(s):  
Ray Tracing ◽  
White Light ◽  
High Power ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Yellow Phosphor ◽  
Blue Phosphor ◽  
Remote Phosphor ◽  
Optical Modes ◽  
Diffuse Reflector

AbstractAn optimized packaging configuration for high-power white-light-emitting diode (LED) lamps that employs a diffuse reflector cup, a remote phosphor and a hemi-spherically-shaped encapsulation is presented. Ray tracing simulations for this configuration show that the phosphor efficiency can be enhanced by up to 50% over conventional packages. It is experimentally shown that dichromatic LED lamps with remote phosphor and diffuse reflector cup configuration have higher phosphor efficiency by 15.4% for blue-pumped yellow phosphor and by 27% for ultraviolet-pumped blue phosphor over conventional packages. Those improvements are attributed to reduced absorption of the phosphorescence by the LED chip and the reduction of deterministic optical modes trapped inside the encapsulant.

Optical design of adjustable light emitting diode for different lighting requirements

2012 ◽  
Vol 21 (12) ◽  
pp. 127105 ◽  
Author(s):  
Jia-Ning Lu ◽  
Jie Yu ◽  
Yu-Zhen Tong ◽  
Guo-Yi Zhang
Keyword(s):  
Light Emitting Diode ◽  
Optical Design ◽  
Light Emitting

scholarly journals Investigation of photo-chromic properties of remote phosphor film and white light emitting diode mixed with TiO2 particles

2016 ◽  
Vol 65 (5) ◽  
pp. 058501
Author(s):  
Zhuo Ning-Ze ◽  
Zhang Na ◽  
Li Bo-Chao ◽  
Li Wen-Quan ◽  
He Qing-Yang ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Tio2 Particles ◽  
Remote Phosphor ◽  
Phosphor Film

scholarly journals Spot phosphor concept applied to a remote phosphor light-emitting diode light engine

2016 ◽  
Vol 55 (11) ◽  
pp. 115103 ◽  
Author(s):  
Paula Acuña ◽  
Youri Meuret ◽  
Geert Deconinck ◽  
Peter Hanselaer
Keyword(s):  
Light Emitting Diode ◽  
Light Emitting ◽  
Remote Phosphor ◽  
Light Engine

The novel design of a remote phosphor ceramic plate for white light generation in high power LEDs

2015 ◽  
Vol 3 (24) ◽  
pp. 6148-6152 ◽  
Author(s):  
Young Hyun Song ◽  
Gill Sang Han ◽  
Eun Kyung Ji ◽  
Min-Ji Lee ◽  
Ye Lim Song ◽  
...  
Keyword(s):  
White Light ◽  
High Power ◽  
Light Emitting Diode ◽  
Ceramic Plate ◽  
The Novel ◽  
Light Emitting ◽  
White Light Generation ◽  
Remote Phosphor ◽  
Light Generation ◽  
Novel Design

Here, we report a phosphor ceramic plate (PCP) constructed using Y3Al5O12:Ce3+ (YAG:Ce) nanoparticles (NPs) with a uniform spherical size distribution for high-power light emitting diode (LED) applications.

Optical design and thermal analysis of high-power light-emitting diode array modules

SIMULATION ◽  
2012 ◽  
Vol 88 (12) ◽  
pp. 1475-1483 ◽  
Author(s):  
SC Dai ◽  
HT Chen
Keyword(s):  
Power Consumption ◽  
Optical System ◽  
Light Emitting Diode ◽  
Optical Design ◽  
Thermal Characteristics ◽  
Base Plate ◽  
Light Emitting ◽  
Led Array ◽  
Single Power ◽  
Good Agreement

In this paper, the optical-thermal characteristics for single-power light-emitting diodes (LEDs) are firstly studied based on experiment and theory, with both results in good agreement. Based on the results of single-power LED, an optical system is proposed with thermal-optical LED array modules, which are assembled upon a spherical base plate with heat sink. By simulation, the optical system is proved to provide uniform illumination. The luminance uniformity of the illuminated target is up to 0.9. The thermal effects under different heat convection coefficient and power consumption on the LED array modules are discussed in detail. Based on the heat transfer characteristics for the LED system, the approximate allowable power consumption for modules can be found.

Optical Design of LED Street Lights

2011 ◽  
Vol 121-126 ◽  
pp. 1004-1008
Author(s):  
Ying Chao Xu ◽  
Wen Zhang Zhu ◽  
Hong Yi Lin ◽  
Fei Bing Xiong
Keyword(s):  
Energy Efficiency ◽  
High Power ◽  
Light Emitting Diode ◽  
Optical Design ◽  
Light Distribution ◽  
Operating Life ◽  
Light Emitting ◽  
The Status ◽  
Output Efficiency ◽  
Optics Design

High-power light emitting diode (LED) develops greatly owing to its energy efficiency, light mono-direction and long operating life. But it is critical to have a secondary optics design for the LED street light, for obtaining good output efficiency and light distribution pattern. This article introduces many advantages of LED as street lightings source, and also analyzes the status and features of LED lamps’ application as street lightings. This article mainly designs a secondary optical light distribution implement using Lighttools 7.1. This paper also gives an example of one kind of freeform surfaces lens which can realize rectangular light shape.

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