| 摘要 |
PROBLEM TO BE SOLVED: To provide a reflection screen for displaying a high-quality video by preventing scintillation. SOLUTION: The reflection screen 100 includes a plurality of recesses 11 having curved surfaces formed in perpendicular and horizontal directions with respect to the normal of an observation surface 100a of a screen substrate 10. The recesses 11 has projection light refection parts 12 which reflect projection light. The projection light projected toward the observation surface 100a of the screen substrate 10 is reflected to the observation surface side 100a. Some of the plurality of recesses 11 are displaced in the vertical direction according to a rule, with respect to an adjacent line formed by connecting centers of the recesses 11 which are the closest to each other in the horizontal direction for the incident direction of the projection light. An optical path difference between the reflection light of the displaced recesses 11 and the reflection light of the recess 11 adjacent to the reflection light becomes longer than the coherence length of the projection light. COPYRIGHT: (C)2011,JPO&INPIT
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