激光投影电视的感知亮度与色度关系  

Relationship Between Perceived Brightness and Chromaticity of Laser Projection Television

作　　者：王飞霞[1] 金岑芩 李晓华[1] 王坚[1] 黄晓煜 王皓 屠彦[1] Wang Feixia;Jin Cenqin;Li Xiaohua;Wang Jian;Huang Xiaoyu;Wang Hao;Tu Yan(Joint International Research Laboratory of Information Display and Visualization,Ministry of Education,School of Electronic Science and Engineering,Southeast University,Nanjing,Jiangsu 210096,China)

机构地区：[1]东南大学电子科学与工程学院教育部信息显示与可视化国际合作联合实验室,江苏南京210096

出　　处：《光学学报》2020年第13期198-204,共7页Acta Optica Sinica

基　　金：十三五国家重点研发计划(2016YFB0401201)。

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.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.

关 键 词：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 

分 类 号：TN942[电子电信—信号与信息处理]