Nichia Corporation

Ryoma Okado

Satoshi Yoshinaga

A light-guiding member includes a plurality of light-emitting portions separated by grooves; and a plurality of light sources each corresponding to a respective one of the plurality of light-emitting portions. The plurality of light-emitting portions include a plurality of outer portions, and at least one inner portion located in a region surrounded by the plurality of outer portions in a plan view. Each of the plurality of outer portions is adjacent to a smaller number of the light-emitting portions than a number of the light-emitting portions adjacent to a single inner portion of the at least one inner portion in a plan view. An area of a single outer portion of the plurality of outer portions is smaller than an area of the single inner portion in the plan view.

Surface light source

A planar light source includes a light guide member including light-emitting units separated by a groove and one or more light sources disposed in one or more of the light-emitting units. The light-emitting units include outer portions and at least one inner portion located in a region surrounded by the outer portions in a plan view. In the plan view, at least one of the outer portions is adjacent to a smaller number of light-emitting units than a number of light-emitting units to which one of the at least one inner portion is adjacent. In a state in which the same power is supplied and one of the outer portions and one of the at least one inner portion are allowed to individually emit light, brightness of the one of the outer portions is higher than brightness of the one of the at least one inner portion.

Growing community of inventors

Naruto, Japan

Ryoma Okado