Patent ID: 8272773
Filing Date: 2012-09-25
Classification: G02B

Abstract:
1. An illuminating device comprising at least: a light source; a light guide body which includes an incidence surface on which light emitted from the light source is incident, an emission surface which emits the incident light toward a viewer and, a light deflection surface which guides the incident light to the emission surface; a reflection sheet which reflects the light emitted from a surface on a side opposite to the emission surface to guide to the light guide body; and a blurring structure, wherein the light deflection surface includes light deflection elements which guide light incident on the light guide body toward the emission surface, the light deflection elements are arranged in two-dimensional alignment by aligning the light deflection elements at nearly equal intervals of a first pitch P the blurring structure includes a first primary surface and a second primary surface, the first primary surface includes linear lenses aligned in at least one direction, a direction in which the first linear lenses extend is arranged inclining in a range equal to or more than 5 degrees and equal to or less than 45 degrees with respect to a random direction X, and the direction X matches with one of the first direction and the second direction.