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Color display and encryption with a plasmonic polarizing metamirror 期刊论文  OAI收割
NANOPHOTONICS, 2018, 卷号: 7, 期号: 1, 页码: 323-331
作者:  
Song, Maowen;  Li, Xiong;  Pu, Mingbo;  Guo, Yinghui;  Liu, Kaipeng
  |  收藏  |  浏览/下载:39/0  |  提交时间:2019/08/23
A brightness and color correction method of LED display based on CCD camera (EI CONFERENCE) 会议论文  OAI收割
2012 International Applied Mechanics, MechatronicsAutomation and System Simulation Meeting, AMMASS 2012, June 24, 2012 - June 26, 2012, Hangzhou, China
作者:  
Wang R.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
The correction methods of LED displays are aiming to address the uniform issues which includes brightness aspect and color aspect. The correction method use a 33 correction coefficients matrix to reshape the pulse width of each LED. To calculate the correction coefficients  a linear system is established  which includes a color CCD and a LED display. And a correction algorithm is introduced based on the color CCD. This algorithm describes the relationships of the main color components of a LED  when the gray level of a LED is increasing or decreasing  the three main color components would change according to the correction coefficients. The results shows that the correction based on this algorithm improved the performance of LED displays. (2012) Trans Tech Publications  Switzerland.  
Photonic Color Filters Integrated with Organic Solar Cells for Energy Harvesting 期刊论文  OAI收割
ACS NANO, 2011, 卷号: 5, 期号: 9, 页码: 7055-7060
作者:  
Park, Hui Joon;  Xu, Ting;  Lee, Jae Yong;  Ledbetter, Abram;  Guo, L. Jay
收藏  |  浏览/下载:20/0  |  提交时间:2015/09/21
An accuracy requirement analysis for LED brightness and color correction system (EI CONFERENCE) 会议论文  OAI收割
2011 International Conference on Transportation, Mechanical, and Electrical Engineering, TMEE 2011, December 16, 2011 - December 18, 2011, Changchun, China
作者:  
Wang R.
收藏  |  浏览/下载:64/0  |  提交时间:2013/03/25
Brightness and color correction system is working for the color uniform problem of LED display. The correction system can improve LED display's quality greatly. The accuracy of the LED system must consider the accuracy requirements of the color correction system. This paper analyze the accuracy requirements from two aspects. One is that the accuracy requirements should consider the chromatic tolerance for the human eyes  the other one is that the accuracy requirements should be associated with the precision of measuring equipment. This paper discuss the accuracy requirement with the CIE1976LUV as a color space to meet the chromatic tolerance of the human eyes  and also give an explanation on how the accuracy of the measuring equipment affect the the correction system. Then this paper give a method to ensure the accuracy requirement for the correction system of a LED display. 2011 IEEE.  
LED optical engine based on rectangular CPC for micro-projection display (EI CONFERENCE) 会议论文  OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China
作者:  
Meng Z.;  Meng Z.
收藏  |  浏览/下载:20/0  |  提交时间:2013/03/25
With applications in digital display  consumer electronics  medicine  automotive lighting  traffic signals  and general illumination  the light-emitting diode (LED) is the world's most efficient light source being mass produced today[1]. However  high cost is the main factor restricting widespread application of LED lighting  and the packaging is the most expensive aspect of LED products. Light emitting diodes (LED) are regarded as the most important light sources in solid-state lighting for their advantages in energy efficiency  long life  vivid colors  high reliability  environmental protection  safety and multiple applications. However  application of LEDs in projection display exist many questions such as low illuminance uniformity and low energy efficiency by reason of luminescence distribution and constructure specificity for LED  the study on application of LED in the micro-projection display and projection display is reported[2-8]. Considering the question mensioned above the rectangular CPC(Compound Parabolic Concentrator) system with three-color LED is applied in the projection display. 2009 SPIE.  
The deviation of color matching algorithm in the field of full-color LED display (EI CONFERENCE) 会议论文  OAI收割
2009 2nd International Congress on Image and Signal Processing, CISP'09, October 17, 2009 - October 19, 2009, Tianjin, China
作者:  
Wang Y.;  Chen Y.
收藏  |  浏览/下载:19/0  |  提交时间:2013/03/25
In this paper  a color gamut transformation method which transformed the different color gamut into a same one has been proposed. In the transforming process  the deviation which was arose from the quantization error and the truncation error were existing. If the deviation was out of the color tolerance  the uniformity of the screen color will be deteriorated. Firstly  the color tolerance of vision was calculated by the color-difference formula. Secondly  in the full-color LED display experiments  it was analyzed that the tri -color tolerance values are respectively 2.5  2.8 and 1.3. According to the tri -color tolerance values and the color difference formula  the express of the quantization precision  gray value and the color difference was set up. Finally the gray-scale range of the color uniformity was analyzed by the collected data  it was concluded that the uniformity of the display was satisfied the requirement of the visual when the range of the gray level was [11  14]  and when the range was [1  11]  the value of the color difference was also reduced significantly. 2009 IEEE.  
Color filter-less technology of LED back light for LCD-TV - art. no. 68410G 会议论文  OAI收割
conference on solid state lighting and solar energy technologies, beijing, peoples r china, nov 12-14, 2007
Fan, MN; Liang, M; Guo, DB; Yang, FH; Wang, LC; Wang, GH; Li, JM
收藏  |  浏览/下载:69/0  |  提交时间:2010/03/09
The research of chromatic aberration arose from the deviation of same function family at the single primary in full-color display (EI CONFERENCE) 会议论文  OAI收割
ICO20: Illumination, Radiation, and Color Technologies, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Chen Y.
收藏  |  浏览/下载:16/0  |  提交时间:2013/03/25
The deviations of primary display characteristics often bring about many complex chromatic aberrations on the color gamut. Among kinds of existing situations caused by deviation of primaries  the emphasis of this paper is confined to the deviation of same function family at the single primary for smoothing away differences. The purpose of this paper is two fold. First  luminance aberration of facsimile color which arises out of special deviations is discussed from many aspects and the three-dimensional gamut model of luminance aberration is proposed. The second goal is drawn on the color aberration arose from these deviations of primaries and the three-dimensional gamut with vectors has been introduced to demonstrate the feature of these aberrations whereas the difficulties of describing the distribution of color aberration. All these conclusions can be utilized to appraise the quality of the display fidelity.  
Color video display technique based on diode-pumped solid state lasers (EI CONFERENCE) 会议论文  OAI收割
ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Liu H.;  Wei Z.-L.;  Liu H.;  Liu H.;  Kang Y.-S.
收藏  |  浏览/下载:25/0  |  提交时间:2013/03/25