Patent ID: 7956371

Claim:
An optical device, comprising: a light emitting device comprised of at least an n-type layer having an n-type electrode, an active region, a p-type layer, and an n-type ZnO layer bonded to the p-type layer, wherein the n-type ZnO layer comprises at least one first shaped optical element for extracting light emitted by the active region, the first shaped optical element is shaped as a cone, a p-type electrode is placed on top of the cone, and the cone's base is bonded to the p-type layer; at least one second shaped optical element comprising a conical lens encapsulating both the light emitting device and the at least one first shaped optical element for extracting light emitted by the active region and the first shaped optical elements; and a phosphor, optically coupled to the at least one second shaped optical element, wherein light in at least a first wavelength region emitted by the active region passes through the at least one second shaped optical elements and excites the phosphor to emit light in at least a second wavelength region.