Patent ID: 9097828
Filing Date: 2015-08-04
Classification: G02B,G02F

Abstract:
1. A lighting device comprising: a light guide plate having a first surface as a light emitting surface, a plurality of side surfaces and a second surface opposed to the first surface of the light guide plate; a plurality of light emitting elements each of which faces one of the plurality of side surfaces of the light guide plate; a scattering reflection region in which a plurality of groove arrays including a plurality of first grooves linearly extends in a first direction, the plurality of groove arrays being arranged in a parallel manner in a second direction intersecting the first direction in in-plane directions, the scattering reflection region provided on the second surface; a peripheral region provided on the second surface between the scattering reflection region and edges of the plurality of side surfaces, the peripheral region being a non-light emitting region of the light guide plate; and a second groove disposed on one side of an extended line of one of the plurality of groove arrays and disposed in the peripheral region apart from the scattering reflection region and the plurality of side surfaces, and the second groove having longitudinal directions in the first direction.