44.1: Invited Paper: High Luminous Efficacy PDP Using CaxMg1−xO Protecting Layer

2011 ◽  
Vol 42 (1) ◽  
pp. 633-636 ◽  
Author(s):  
Qun Frank Yan ◽  
Xinqun Deng ◽  
Zhengxian Lu ◽  
Fangli Xing ◽  
Xin Zhang ◽  
...  
Keyword(s):  
Luminous Efficacy

Analysis of Characteristics of Halogen and LED Automobile Lamps

2020 ◽  
pp. 57-62
Author(s):  
Olga Yu. Kovalenko ◽  
Yulia A. Zhuravlyova
Keyword(s):  
Power Consumption ◽  
Flip Chip ◽  
Weather Conditions ◽  
Luminous Flux ◽  
Luminous Efficacy ◽  
Colour Temperature ◽  
Study Results ◽  
Calculation Results ◽  
Mandatory Rules ◽  
Halogen Lamps

This work contains analysis of characteristics of automobile lamps by Philips, KOITO, ETI flip chip LEDs, Osram, General Electric (GE), Gtinthebox, OSLAMPledbulbs with H1, H4, H7, H11 caps: luminous flux, luminous efficacy, correlated colour temperature. Characteristics of the studied samples are analysed before the operation of the lamps. The analysis of the calculation results allows us to make a conclusion that the values of correlated colour temperature of halogen lamps are close to the parameters declared by manufacturers. The analysis of the study results has shown that, based on actual values of correlated colour temperature, it is not advisable to use LED lamps in unfavourable weather conditions (such as rain, fog, snow). The results of the study demonstrate that there is a slight dispersion of actual values of luminous flux of halogen lamps by different manufacturers. Maximum variation between values of luminous flux of different lamps does not exceed 14 %. The analysis of the measurement results has shown that actual values of luminous flux of all halogen lamps comply with the mandatory rules specified in the UN/ECE Regulation No. 37 and luminous flux of LED lamps exceeds maximum allowable value by more than 8 %. Luminous efficacy of LED lamps is higher than that of halogen lamps: more than 82 lm/W and lower power consumption. The results of the measurements have shown that power consumption of a LED automobile lamp is lower than that of similar halogen lamps by 3 times and their luminous efficacy is higher by 5 times.

scholarly journals Maximum spectral luminous efficacy of white light

2012 ◽  
Vol 111 (10) ◽  
pp. 104909 ◽  
Author(s):  
Thomas W. Murphy
Keyword(s):  
White Light ◽  
Luminous Efficacy

scholarly journals Towards the Optimum Light Source Spectrum

2010 ◽  
Vol 2010 ◽  
pp. 1-9 ◽  
Author(s):  
Andrew Chalmers ◽  
Snjezana Soltic
Keyword(s):  
Light Source ◽  
Large Scale ◽  
Source Spectrum ◽  
Light Sources ◽  
Luminous Efficacy ◽  
Light Emitting ◽  
Spectral Bands ◽  
Good Energy ◽  
Lighting Systems ◽  
Colour Rendering

This paper is concerned with designing light source spectra for optimum luminous efficacy and colour rendering. We demonstrate that it is possible to design light sources that can provide both good colour rendering and high luminous efficacy by combining the outputs of a number of narrowband spectral constituents. Also, the achievable results depend on the numbers and wavelengths of the different spectral bands utilized in the mixture. Practical realization of these concepts has been demonstrated in this pilot study which combines a number of simulations with tests using real LEDs (light emitting diodes). Such sources are capable of providing highly efficient lighting systems with good energy conservation potential. Further research is underway to investigate the practicalities of our proposals in relation to large-scale light source production.

7.2: Address Discharge Characteristics of High Luminous Efficacy PDP with SrO Protecting Layer

2009 ◽  
Vol 40 (1) ◽  
pp. 58 ◽  
Author(s):  
Hae-Yoon Jung ◽  
Tae-Ho Lee ◽  
Ohyung Kwon ◽  
Ki-Woong Whang
Keyword(s):  
Discharge Characteristics ◽  
Luminous Efficacy

Research Note: LED chip-on-board packaging technology for strict colour tolerance

2017 ◽  
Vol 49 (8) ◽  
pp. 1052-1057
Author(s):  
J Zhang ◽  
P Ge ◽  
Z Zhou ◽  
D Liu ◽  
H Wang ◽  
...  
Keyword(s):  
Research Note ◽  
Luminous Efficacy ◽  
Packaging Technology ◽  
Colour Temperature ◽  
Colour Rendering ◽  
Method Show

In the field of LED packaging, people usually pay more attention to colour temperature, luminous efficacy and colour rendering than colour tolerance. This paper focuses on how to meet strict colour tolerances in the process of chip-on-board packaging. The McAdam ellipses are used to explain the meaning of colour tolerance. A method based on adjusting the amount of phosphor glue and the proportions of different phosphors it contains is described. Measurements on samples packaged according to this method show that it makes it possible to meet strict colour tolerance requirements.

scholarly journals Luminous Efficacy of LED White Light Sources

2016 ◽  
Vol 16 (06) ◽  
pp. 64-74
Author(s):  
V Pavlov ◽  
V Pyasetskiy ◽  
A Horohorov ◽  
A Shirankov
Keyword(s):  
White Light ◽  
Light Sources ◽  
Luminous Efficacy

scholarly journals Luminous Efficacy Enhancement for LED Lamps using Highly Reflective Quantum Dot-based Photoluminescent Films

2021 ◽  
Author(s):  
Binhai Yu ◽  
Zhou Lu ◽  
Guanwei Liang ◽  
Yikai Yuan ◽  
Hong Wang ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Luminous Efficacy

26.2: A New Structure and Driving Scheme for High Luminous Efficacy in WXGA PDPs

2005 ◽  
Vol 36 (1) ◽  
pp. 1134 ◽  
Author(s):  
Joon Yeon Kim ◽  
Jeong Doo Yi ◽  
Min Hur ◽  
Tae Woo Kim ◽  
Hyun Gu Heo ◽  
...  
Keyword(s):  
Luminous Efficacy
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