Patent ID: 7864420

Claim:
A screen, comprising: plural three-dimensional portions having a concave shape arranged at a front surface side of a screen substrate; wherein the three-dimensional portions are disposed so that the number of the three-dimensional portions provided in a range of a given length along a first direction on the screen substrate which is determined corresponding to at least either one of a direction of a chief ray and a chief direction of outside light is larger than the number of three-dimensional portions provided in a range of the given length along a second direction crossing the first direction, wherein the plural three-dimensional portions are arranged so that at least two three-dimensional portions of the three-dimensional portions provided in the range of the given length along the first direction contact each other, wherein the first direction is a direction of an intersection line between a surface vertical to the chief ray of the projection light and a screen surface; the plural three-dimensional portions include a light reflection surface and a light absorption surface, a boundary between the light reflection surface and the light absorption surface is parallel to the first direction.