Investigation on optical performance of transparent displays

Transparent displays have been expected to widen the scope of display application utilizing see-through function. There are, however, few studies on transmitted image quality of transparent display until now. This paper, therefore, describes the optical performance of transparent displays. In order to evaluate transmitted see-through performance, novel evaluation method, named purity, was developed by measuring the amount of light which can form a transmitted distinct image. The new proposed method could tell how clear the see-through image can be seen, and is consistent with viewer's perception. Our study would give suggestions on the development of transparent displays.