| 摘要 |
PROBLEM TO BE SOLVED: To provide a reflection screen capable of improving the contrast of a projection image by reflecting a larger amount of light beams from an oblique direction to the observation side in front of a reflection screen even in a case where a projector is arranged in the oblique direction of the reflection screen. SOLUTION: In the reflection screen reflecting projected light beams obliquely projected to an observation surface from a position deviated in a perpendicular direction with respect to the normal line of the observation surface of the screen substrate from the center of a screen substrate, a plurality of recessed parts are formed on the observation surface of the screen substrate, and the reflection screen includes: a reflection part formed at least on the region (range) of a recessed surface of the recessed part where the projection light is projected; a low reflectance part formed on the region of the recessed surface where the reflection part is not formed; and a substrate exposure part where neither the reflection part nor the low reflectance part are formed between the reflection part and the low reflectance part. COPYRIGHT: (C)2011,JPO&INPIT
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