| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a reflective screen configured to efficiently present image light to an observer. <P>SOLUTION: A reflective screen 10 for reflecting image light projected from an image source 2 to an observer side comprises: a base layer 11; a deflecting layer 12 disposed on an image-light entering side of the base layer; a Fresnel lens 13 disposed on the opposite side to the image-light entering side of the base layer; and a reflection layer 14 overlaid on the Fresnel lens and capable of reflecting light. The deflecting layer includes an array of a plurality of unit optical elements 12a, each element having a predetermined cross-sectional shape and protruding in a direction that is to be an image source side. The unit optical element has an entrance face 12b that causes the image light to enter the deflecting layer, and a total reflection face 12c that totally reflects the image light entering the entrance face and deflects it toward the reflection layer. <P>COPYRIGHT: (C)2013,JPO&INPIT |
