| 摘要 |
Provided is an optical element with a light extraction efficiency increased through the use of an irregular structure mainly providing an optical diffraction effect than scattering effect. A light emitting element is provided with: a laminate portion 8 in which at least a semiconductor layer including a light emitting layer 84 is laminated; and a diffraction surface 2 which is formed in a boundary of any of layers included in the laminate portion 8 and which includes an irregular structure formed so as to reflect incident light emitted from the light emitting layer 84 according to a Bragg's condition of diffraction. The light emitting element is characterized in that the irregular structure is formed such that the inclination of a side wall of a protruding portion with respect to the diffraction surface 2 is more than 75 degrees. |
