One Hundred years of solid state electroluminescence-a challenge for the CIE
Solid state electric light is one hundred years old. Round observed light emanating from a SiC crystal in 1907. It took almost sixty years before injection electroluminescence became a practical light source, first for small scale signalling, but now already penetrating into every area of light and lighting.With the use of light emitting diodes (LEDs) for critical signalling purposes (e.g. traffic signals and self-illuminated traffic signs) as well as for general lighting applications, it became necessary to properly evaluate their light. This means not only correct photometric measurement, but also that the measurement result should reflect the visual evaluation.One of the most critical questions today is the colour rendering evaluation of LED light.The paper will show methods to get better congruence between measured and visually observed colour, and will discuss the question of light source colour quality. Some items related to practical photometry and colorimetry of LEDs will also be touched on.
light emitting diode (LED) colour colour rendering LED photometry.
Schanda, János
University of Pannonia, Hungary
国际会议
26th Session of the CIE(国际照明委员会（CIE）第26届大会)
北京
英文
11-19
2007-07-04（万方平台首次上网日期，不代表论文的发表时间）