Patent ID: 7933070

Claim:
A lens array comprising: a plurality of lens assembly members, each of said lens assembly members including a plurality of lenses arranged therein, said lens assembly members being arranged so that an optical axis of each of the lenses of one of the lens assembly members is aligned with an optical axis of each of the lenses of another of the lens assembly members, said lenses of each of the lens assembly members being arranged in a plurality of rows extending in a direction perpendicular to the optical axes; and a light blocking member including a plurality of apertures arranged therein, said light blocking member being arranged so that the optical axis of each of the lenses passes through each of the apertures, wherein said lens assembly members and said light blocking member are arranged so that the following relationship is satisfied: ( PX 2 ) 2 + ( PY 4 ) 2 ≤ RA ⁢ LO - F F where PY is a pitch of the lenses arranged in one row, PX is a pitch of the rows, F is a focal length of each of the lenses, LO is a distance between each of the lenses and an object surface thereof, and RA is a distance between the optical axis and an inner surface of the aperture.