background luminance

基本解釋

The principle for testing the image tube luminance and background is discussed. The constitution of the instrument and processing methods of test data are introduced.
論述像管亮度增益與背景測試儀的原理，介紹儀器的組成以及測試數(shù)據(jù)的處理方法。
Objective To evaluate the lasting time of background luminance difference of the fixation target between two eyes because of dark adaptation under routine subjective refraction.
目的探討在常規(guī)主覺驗(yàn)光環(huán)境下，暗適應(yīng)造成的雙眼前視標(biāo)背景亮度差異的持續(xù)時(shí)間。
Object: To evaluate mesopic contrast threshold under 3 kinds of background and to explore the effect of adaptation time, adaptation luminance and glare on contrast threshold of humans eye.
目的評估3種背景環(huán)境下的中間視覺對比度閾值，并探討暗適應(yīng)時(shí)間、背景亮度和眩光對人眼對比度閾值的影響。