Patent ID: 8142043

Claim:
A planar light source apparatus, comprising a plurality of lighting elements, the lighting elements being arranged on a common plane and facing a same direction; and a plurality of mirror reflectors, the mirror reflectors each having a reflecting surface facing the lighting elements, the reflecting surfaces being perpendicular to the common plane; wherein the lighting elements are arranged in a lattice array comprising odd columns and even columns in a direction, the mirror reflectors frame the lighting elements; wherein the mirror reflectors contact the outermost lighting elements in the lattice array; and wherein the mirror reflectors are connected end to end, a light intensity of each of the outmost lighting elements in the lattice array, which contacts only one mirror reflector, is 40% to 70% of that of the innermost lighting elements in the lattice array, and a light intensity of each of the outmost lighting elements in the lattice array, which contacts two mirror reflectors, is 20% to 50% of that of the innermost lighting elements in the lattice array.