Patent ID: 8395172

Claim:
A light emitting device comprising: a light emitting layer; a first conductivity type layer provided on the light emitting layer; a first electrode provided on the first conductivity type layer; a second conductivity type layer provided under the light emitting layer and having thickness t 1 (μm); a current blocking layer provided in contact with a partial region of a surface of the second conductivity type layer on opposite side from the light emitting layer, and having an outer edge protruding by length x 1 (μm) from an outer edge of the first electrode; and a second electrode being in contact with a surface of the current blocking layer on opposite side from the second conductivity type layer and a region of the surface of the second conductivity type layer not in contact with the current blocking layer, and being capable of reflecting emission light from the light emitting layer, a following formula being satisfied, ( x ⁢ ⁢ 1 - t ⁢ ⁢ 2 × tan ⁢ ⁢ 70 ⁢ ° ) ( tan ⁢ ⁢ 70 ⁢ ° + x ⁢ ⁢ 1 t ⁢ ⁢ 2 ) - t ⁢ ⁢ 1 ≥ 0 where t 2 (μm) is total thickness of the first conductivity type layer, the light emitting layer, and the second conductivity type layer.