Patent ID: 9458973
Filing Date: 2016-10-04
CPC Classification: F21K,F21Y,G02B,H01L

Claim Text:
1. An optical element for use with a LED, comprising: a base face arranged to receive incoming light from the LED, a top face having a normal extending in a direction from the base face ( wherein the top face extends such that it covers a first angular range relative to the optical axis, outside of which first angular range light emitted by at least one point of the LED would be subject to total internal reflection at an imaginary extension of the top face, and wherein the top face comprises a first pattern of first optical structures which are arranged to refract light originating from the LED away from the optical axis; a plurality of side faces extending between the base face and the top face, the plurality of side faces being arranged to refract light originating from the LED towards the optical axis; and wherein an extension of the top face extending such that it exclusively covers a second angular range extending outwardly of said first angular range, wherein the extension of the top face comprises a second pattern comprising second optical structures having top surfaces which are oriented to form an angle larger than 90 degrees relative to the optical axis (A).