Abstract: A light emitting device includes multiple light source parts each including at least one first light source part and at least one second light source part, each including a light emitting element and a light-guiding member to guide light of the light emitting element. Each light-guiding member has a taper shape narrowing toward the light emitting element. Light from each light source part satisfies condition of ????tan?1×2 tan ?. (? is an angle of a straight line connecting a position on the light-irradiation surface having an illuminance of at least one-half of that at center position and the center of the light emitting surface of the first light source part, and ? is an angle of a straight line connecting a center of a light-irradiation region on a light-irradiation surface and a center of the light emitting surface of the second light source part.

Abstract: A lighting device includes a plurality of lighting modules and a plurality of control devices. The lighting modules each includes a plurality of light emitting devices aligned in an array form or a staggered form. The control devices are configured to adjust light quantities of the light emitting devices of each of the lighting modules so that, when light is irradiated on a first target surface separated by a prescribed distance from the lighting modules, a sum of light quantities per unit area of a part for which light from the lighting modules overlaps in the first target surface is within ±20% with respect to a light quantity per unit area of a part for which light does not overlap in the first target surface.

Abstract: A light emitting device includes multiple light source parts each including at least one first light source part and at least one second light source part, each including a light emitting element and a light-guiding member to guide light of the light emitting element. Each light-guiding member has a taper shape narrowing toward the light emitting element. Light from each light source part satisfies condition of ????tan?1×2 tan ?. (? is an angle of a straight line connecting a position on the light-irradiation surface having an illuminance of at least one-half of that at center position and the center of the light emitting surface of the first light source part, and ? is an angle of a straight line connecting a center of a light-irradiation region on a light-irradiation surface and a center of the light emitting surface of the second light source part.

Abstract: A lighting device includes a plurality of lighting modules and a plurality of control devices. The lighting modules each includes a plurality of light emitting devices aligned in an array form or a staggered form. The control devices are configured to adjust light quantities of the light emitting devices of each of the lighting modules so that, when light is irradiated on a first target surface separated by a prescribed distance from the lighting modules, a sum of light quantities per unit area of a part for which light from the lighting modules overlaps in the first target surface is within ±20% with respect to a light quantity per unit area of a part for which light does not overlap in the first target surface.