光学学报, 2020, 40 (13): 1333001, 网络出版: 2020-07-09
激光投影电视的感知亮度与色度关系 下载: 1073次
Relationship Between Perceived Brightness and Chromaticity of Laser Projection Television
视觉光学 颜色视觉 感知亮度 色度 异色感知亮度匹配 激光投影电视 visual optics color vision perceived brightness chromaticity heterochromatic perceived brightness matching laser projection television
摘要
研究感知亮度与光亮度、色度之间的关系,并针对激光投影电视设计了两次异色感知亮度匹配实验。实验一中基于两台具有相同参数的单色激光电视,研究了色饱和度、色调对感知亮度的影响。结果表明,当在同一色调,光亮度相同时,色饱和度越高,感知亮度越高,色饱和度变化程度对色调的系统等效亮度与光亮度比值(Lseq/L)的影响排序为蓝大于红大于绿。实验二中基于单色和双色激光投影电视,研究了不同色域对感知亮度的影响。结果表明,光亮度相同时,色域越大的电视,感知亮度越高,自然图片的Lseq/L略低于相应主色调的纯色图片。目前,激光显示从单色发展到双色、三色激光,色域得到扩展,双色、三色激光投影电视的电功率亮度转换效率比单色分别提高了3%、24%。研究结果有助于对宽色域、低功耗、高感知亮度的激光显示进行优化设计。
Abstract
Herein, the relationship among perceived brightness, luminance, and chromaticity was investigated. Moreover, two heterochromatic perceived brightness matching experiments were conducted for laser projection televisions (TVs). In the first experiment, based on two laser projection TVs with single diode having the same parameters, the effects of hue and color saturation on perceived brightness were examined. Results show that when hue and luminance are the same respectively, higher color saturation correspond to higher perceived brightness; furthermore, the effect of varying color saturation on the ratio of the system equivalent luminance to luminance (Lseq/L) of hue is as follows: blue>red>green. In the second experiment, based on two different laser projection TVs with single diode and dual diodes, the effects of different color gamut on perceived brightness were studied. Results indicate that when luminance is same, wider color gamut of the TV correspond to higher perceived brightness; moreover, Lseq/L value of natural images is slightly lower than that of pure images with dominant hue. Additionally, nowadays, the color gamut becomes wider in laser displays with single-, dual-, and trinal-diode lasers. The efficiency of converting electric power to luminance in laser projection TVs with dual and trinal diodes increase by 3% and 24%, respectively, than that with single diode. Investigation results help optimize designs for laser displays with wider color gamut, lower power consumption, and higher perceived brightness.
王飞霞, 金岑芩, 李晓华, 王坚, 黄晓煜, 王皓, 屠彦. 激光投影电视的感知亮度与色度关系[J]. 光学学报, 2020, 40(13): 1333001. Feixia Wang, Cenqin Jin, Xiaohua Li, Jian Wang, Xiaoyu Huang, Hao Wang, Yan Tu. Relationship Between Perceived Brightness and Chromaticity of Laser Projection Television[J]. Acta Optica Sinica, 2020, 40(13): 1333001.