Dimming device and an image display apparatus

Together emit any region on the plane, to provide a light control device that can suppress crosstalk. Light control device of the present invention (1) is arranged in parallel with each other, the light introduced into the end of the short side along the long side to the light guide, a plurality of strip-shaped light guide a light guide plate (2) having, in the light guide for each light guide is disposed on an end portion of the short side, the LED (3) for emitting light toward the interior of the light guide, a plurality of guide are arranged in parallel with each other in the optical path direction perpendicular, the light guide plate (2) has a light of a plurality capable of changing the extraction rate strip switching element (4) from the light in the light guide plate (2) and a light extraction means being arranged on the output side.