Patent ID: 7965035

Claim:
A light-emitting device comprising: a light-emitting section disposed on a reference plane and supplying light; and a structure disposed on a light-exiting side of the light-emitting section, wherein the structure includes: a reflective polarizer that transmits polarized light vibrating in a first vibrating direction and reflects polarized light vibrating in a second vibrating direction substantially orthogonal to the first vibrating direction, the reflective polarizer including wires substantially parallel to the second vibrating direction and a transparent layer disposed between the wires; and an optical section that transmits the light from the reflective polarizer and that cyclically changes in refraction index in a two-dimensional plane substantially parallel to the reference plane, wherein the optical section includes a plurality of protrusions formed from a same layer as the transparent layer of the reflective polarizer, and the transparent layer is disposed so that light from the reflective polarizer is directly incident on the optical section.