Patent ID: 8350453

Claim:
A lamp cover for a light emitting device, comprising: an outer surface of the lamp cover; a supporting transparent inner cap; a phosphor mixed structure adhered to the supporting transparent inner cap, the phosphor mixed structure being disposed between the outer surface and the supporting transparent inner cap of the lamp cover; and a light-partial-reflective cap structure disposed between the outer surface and the phosphor mixed structure, wherein the light-partial-reflective cap structure comprises at least two light transparent material layers and at least two space layers that are stacked in an alternating manner, wherein the supporting transparent inner cap comprises a central portion that is a concavely curved plate, and a peripheral portion that is a flat plate, and wherein the peripheral portion of the supporting transparent inner cap is folded to an outer direction of the lamp cover such that the peripheral portion of the supporting transparent inner cap directly contacts with ends of the phosphor mixed structure and ends of the light-partial-reflective cap structure.