Patent ID: 8921880
Filing Date: 2014-12-30
Classification: H01L

Abstract:
1. An LED light source device, comprising: an LED light source; a first translucent structure covering the LED light source, powder with a characteristic of scattering light being distributed in an interior of the first translucent structure, the LED light source being embedded in the first translucent structure and covered by the powder; and a second translucent structure covering the first translucent structure; wherein an outer contour of the first translucent structure and an outer contour of the second translucent structure are both partly spherical, the outer contour of the first translucent structure is coincident with a part of a first sphere, the outer contour of the second translucent structure is coincident with a part of a second sphere, and radiuses of the first sphere and the second sphere satisfy following condition: R>r, wherein r represents radius of the first sphere, R represents radius of the second sphere, and the first sphere for which the outer contour of the first translucent structure is partly coincidental is internally tangent with the second sphere for which the outer contour of the second translucent structure is partly coincidental, and wherein the index of refraction of the second translucent structure satisfies following condition: N