Abstract: A light-emitting device includes first and second light-emitting elements and first and second covering members respectively containing first and second reflective particles. The first covering member includes a first reflective portion and a first light-transmissive portion. A ratio of an area of the first reflective particles to an area of the first reflective portion is higher than a ratio of an area of the second reflective particles to an area of the second covering member. A ratio of the area of the first reflective particles to an area of the first light-transmissive portion is lower than the ratio of the area of the second reflective particles to the area of the second covering member in the first cross section. A minimum height of the first light-transmissive portion between the first and second light-emitting elements is greater than that of the first light-transmissive portion outward of the first light-emitting element.

Abstract: A color-based sorting apparatus comprising, a material supplying device provided so as to discharge and supply the grains stored therein, a color detecting device detecting a color of each of the grains passing through a setting region, a sorting processing section operating to change a transference path for defective grains, a control device, which determines whether each of the grains to be sorted is defective or not based on a detection signal from the color detecting device, and when it is determined that one of the grains is defective, the control device activating the sorting processing section, and a feeding roll disposed between the material supplying device and the color detecting device and rotating around an axial line thereof to cause the grains to be sorted, which are supplied from said material supplying device aligned in an axial direction, to freely fall down toward the color detecting device.

Abstract: A color-based sorting apparatus comprising, a material supplying device provided so as to discharge and supply the grains stored therein, a color detecting device detecting a color of each of the grains passing through a setting region, a sorting processing section operating to change a transference path for defective grains, a control device, which determines whether each of the grains to be sorted is defective or not based on a detection signal from the color detecting device, and when it is determined that one of the grains is defective, the control device activating the sorting processing section, and a feeding roll disposed between the material supplying device and the color detecting device and rotating around an axial line thereof to cause the grains to be sorted, which are supplied from said material supplying device aligned in an axial direction, to freely fall down toward the color detecting device.