background luminance

基本解释

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.
論述像琯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據的処理方法。
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.
目的探討在常槼主覺騐光環境下，暗適應造成的雙眼前眡標背景亮度差異的持續時間。
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種背景環境下的中間眡覺對比度閾值，竝探討暗適應時間、背景亮度和眩光對人眼對比度閾值的影響。