Patent ID: 7837370
Filing Date: 2010-11-23
Classification: G02B,H01L

Abstract:
1. A light system comprising: a light emitting diode (LED), the LED having a major surface that emits light; a first optical element over the LED, the first optical element having a curved surface such that a majority of the light emitted by the major surface is redirected by total internal reflection (TIR) in a direction that is substantially parallel to the major surface, wherein substantially all light emitted from the first optical element is through a first surface area of the first optical element, the first surface area having a first height in a direction substantially perpendicular to the major surface; and a second optical element optically coupled to the first optical element to receive substantially all light emitted through a first section of the first surface area of the first optical element, the second optical element having a light output area of a second height substantially less than the first height, wherein a majority of light emitted by the light output area is in a direction substantially parallel to the major surface of the LED, and wherein the light output area of the second optical element has a second surface area approximately equal to or greater than the first surface area.