Yano Y, Akamine H, Awamoto S, Nakamura Y, Morishita J
Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka.
Department of Radiology, Kyushu University Hospital, Fukuoka.
Med Phys. 2012 Jun;39(6Part4):3629. doi: 10.1118/1.4734736.
To examine variation of chromaticity of LCD in different types of fluorescent lights in a reading room.
A color LCD (RX320, antiglare type, 450 cd/m , three-megapixel, Eizo Nanao), and a monochrome LCD (G31-S, anti glare type, 450 cd/m , three-megapixel, Eizo Nanao) were used in this study. The chromaticity in grayscale images with eighteen luminance levels were measured under five types of fluorescent lights with different color spectrums (Daylight: 6,700 K, Natural white: 5,000 K, White: 4,200 K, Warm white: 3,500 K, Light bulb: 3,000 K) by using a colorimeter (CS-200: KONICA MINOLTA). The chromaticity of LCDs was measured at various ambient lighting conditions (a dark room, 36, and 300 lux) and different types of fluorescent lights.
The chromaticity of LCDs measured under ambient lights was changed from that measured in a dark room. The chromaticity of LCDs varied with different types of fluorescent lights. As illuminance of the room increased, variations in chromaticity at relatively lower luminance levels increased. The direction of changes in chromaticity shifted to the color for each fluorescent light.
Fluorescent lights having different color spectra affect the chromaticity of LCDs.
研究阅览室中不同类型荧光灯下液晶显示器（LCD）的色度变化。
本研究使用了一台彩色LCD（RX320，防眩光型，450 cd/m²，三百万像素，艺卓公司）和一台单色LCD（G31 - S，防眩光型，450 cd/m²，三百万像素，艺卓公司）。通过使用色差仪（CS - 200：柯尼卡美能达），在五种具有不同光谱的荧光灯下（日光色：6700 K，自然白色：5000 K，白色：4200 K，暖白色：3500 K，灯泡色：3000 K）测量了具有十八个亮度级别的灰度图像的色度。在各种环境照明条件（暗室、36勒克斯和300勒克斯）以及不同类型的荧光灯下测量了LCD的色度。
在环境光下测量的LCD色度与在暗室中测量的不同。LCD的色度随荧光灯类型的不同而变化。随着房间照度的增加，相对较低亮度级别的色度变化增大。色度变化的方向向每种荧光灯的颜色偏移。
具有不同光谱的荧光灯会影响LCD的色度。
