Light emitting device and projector

A light emitting device, comprising:

• a first semiconductor layer having a first conductivity type;
• a second semiconductor layer having a second conductivity type different from the first conductivity type;
• a light emitting layer disposed between the first semiconductor layer and the second semiconductor layer;
• and
• a photonic crystal layer disposed on a side of the second semiconductor layer opposite to the light emitting layer, wherein
• the photonic crystal layer includes:
• a first region provided with a first photonic crystal that causes light emitted by the light emitting layer to resonate in a direction orthogonal to a laminating direction of the first semiconductor layer and the light emitting layer and does not cause the light to be emitted in a direction different from the orthogonal direction;
• and
• a second region provided with a second photonic crystal that does not overlap the first region when viewed in the laminating direction and causes the light emitted by the light emitting layer to be emitted in a direction different from the orthogonal direction.