Patent ID: 8152338
Filing Date: 2012-04-10
Classification: H01L

Abstract:
1. An LED lamp unit comprising: one or more LED chips for emitting light; and an optical lens for transmitting and refracting light emitted from the one or more LED chips, the optical lens having a bottom surface, a side surface and a top surface, the optical lens having a central recess part arranged on a central portion of the top surface, the optical lens having an outer part surrounding the central recess part, the outer part including the remaining portion of the top surface and an entirety of the side surface, wherein the central recess part is hollowed inwardly, and the outer part is formed in a shape of a convex lens, wherein the outer part gradually slopes from and including a mostly upwardly-facing portion of the top surface to and including a mostly sidewardly-facing portion of the side surface, and wherein the one or more LED chips is below the bottom surface of the optical lens corresponding to the central recess part.