DEFLECTION STRUCTURE PLATE, SURFACE LIGHT SOURCE DEVICE, AND DIRECT IMAGE DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide: a deflection structure plate being applicable to light from dot-like light sources and capable of preventing the occurrence of unevenness in luminance; a surface light source device; and a direct image display device.

SOLUTION: The deflection structure plate 1 is constituted by first projecting parts 10 extended in the first direction and arranged in parallel in the second direction on a first main surface 1a and second projecting parts 20 extended in the second direction and arranged in parallel in the first direction on a second main surface 1b. The first projecting parts 10 extended in the first direction and the second projecting parts 20 extended in the second direction are arranged to cross orthogonally for each other. The first projecting parts 10 and the second projecting parts 20 are constituted by curved faces crossing the direction of plate thickness.

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