Patent ID: 8604504

Claim:
An organic light-emitting element, comprising: an organic light-emitting layer; a transparent substrate; and a transparent electrode that is provided between the organic light-emitting layer and the transparent substrate; a surface of the transparent substrate on an opposite side to the transparent electrode being used as a light extraction surface, wherein the transparent substrate has birefringence; and where a polarized light having an electric field oscillation direction parallel to a stacking plane of the organic light-emitting layer is defined as S-polarized light, and a polarized light having an electric field oscillation direction included in a plane that includes a vector in a travel direction of the light and is perpendicular to the stacking plane of the organic light-emitting layer is defined as P-polarized light; the transparent substrate is uniaxial and has an optical axis perpendicular to the stacking plane, and a refractive index of the transparent substrate for the P-polarized light is smaller than a refractive index of the transparent substrate for the S-polarized light.