LIGHT EMITTING DEVICE AND LIGHTING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a light emitting device having high light extraction efficiency and obtaining diffused light.

SOLUTION: This light emitting device 10 is provided with: a light emitting diode including a multiple quantum well (MQW) light emitting layer 7; a photonic crystal that is formed on a p-type clad layer 9 of the light emitting diode and having periodically modulated dielectric constants in the inward direction of a surface comprising a p-type contact layer 11 having circular through holes 11a that are symmetrically arranged six times and a p-side electrode 12 embedded in the through holes 11a of the p-type contact layer 11; and a flat concave lens 50 as a means for diffusing the light from the light emitting diode that is formed through an n-side electrode 16 on the rear face of a GaN substrate 1.

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