Patent ID: 9121986
Filing Date: 2015-09-01
Classification: G02B,G03F

Abstract:
1. A microlens array, comprising: a plurality of microlens array units, each of said units including a plurality of microlenses which are two-dimensionally arranged, said units being mutually layered; and polygonal field diaphragms including polygonal apertures and being arranged at inverted-image-forming positions between said microlens array units, wherein a plurality of said microlenses are arrayed at an interval of suitable length in a first direction to constitute microlens rows, and the plurality of microlens rows are arranged at an interval of suitable length in a second direction orthogonal to the first direction, wherein, when a viewing field region defined by said polygonal field diaphragms is broken down into a rectangle and triangles on both sides thereof, then the triangular portion on one side, the rectangular portion, and the triangular portion on an other side are continuous in said first direction, wherein each of microlens row groups is constituted by every one of said plurality of microlens rows, and, for each of said microlens row groups, said microlenses in each of said microlens rows are arranged with offset in said first direction so that said triangular portion on the one side overlaps in relation to a second direction with said triangular portion on the other side of another microlens in another microlens row adjacent in said second direction to the relevant microlens, and wherein said microlens row groups are arranged in said first direction with an offset of a distance shorter than a length of said viewing field region in said first direction, with respect to another microlens row group adjacent thereto in said second direction.