Patent ID: 7382534

Claim:
A screen, comprising: a lens array having a plurality of spherical lens elements, a vertical length of each of the plurality of spherical lens elements, along a vertical direction, extending substantially through centers of respective spherical lens elements, and a horizontal length of each of the plurality of spherical lens elements, along a horizontal direction, extending substantially through centers of respective spherical lens elements, being set such that the horizontal length is larger than the vertical length, the horizontal direction being substantially orthogonal to the vertical direction; and a curvature center position of any one of the plurality of spherical lens elements being arranged to be positioned at substantially a half of the first length along the first direction with respect to a second curvature center position of an other of the plurality of spherical lens elements, the other of the plurality of spherical lens elements being adjacent to the one of the plurality of spherical lens elements in the second direction.