Illumination device

An illumination device, comprising:

• a shell, provided with a light outlet;
• a substrate, located in the shell and standing next to the light outlet;
• a plurality of first light sources, arranged on the substrate along a direction and adapted to generate a first light beam;
• a plurality of second light sources, arranged on the substrate along the direction, wherein the second light sources and the first light sources are arranged side by side on the substrate, the second light sources are located between the first light sources and the light outlet, and the second light sources are adapted to generate a second light beam;
• and
• a reflective element, located in the shell and having a first reflective surface and a second reflective surface, wherein the first reflective surface is located on a side of the substrate opposite to the light outlet, the second reflective surface and the substrate are respectively located on two opposite side edges of the first reflective surface, the first reflective surface and the second reflective surface face the light outlet, the second reflective surface is inclined relative to the first reflective surface, the first light sources and the second light sources are together located in an accommodation space formed by the substrate and the reflective element, the first reflective surface is adapted to reflect a chief ray of the first light beam to the light outlet, and the second reflective surface is adapted to reflect a chief ray of the second light beam to the light outlet;
• wherein a shortest distance between the first light source and the light outlet is greater than a shortest distance between the second light source and the light outlet;
• wherein each of the first light sources has a top surface facing away from the substrate, and the first reflective surface overlaps each of the first light sources in a normal direction of each of the top surfaces of the first light sources;
• wherein each of the second light sources has a top surface facing away from the substrate, and the second reflective surface totally overlaps each of the second light sources in a normal direction of each of the top surfaces of the second light sources.