银幕照度及投影器有效光通量测定的误差分析与数值修正

Error Analysis and Numeric Adjustment of Valid Luminous Flux Measure on the Screen Illuminance and the Projector

通过对九孔板成象中心亮斑光能量的分析与计算，给出用九孔板测量银幕照度及投影器有效光通量数值的修正方法。

The purpose of this article is to show both the method of measuring screenilluminance with nine-plate and the method of numeric adjustment on valid luminous flux of the projector,after the energy of the facula on the image centre through nine-hole plate is analysis and counted.