LIGHTING DEVICE INCLUDING A TRANSPARENT STRUCTURE

Embodiments of the invention include a light emitting diode (LED) and a transparent structure disposed over the LED. The transparent structure includes a first surface that reflects light extracted from the LED and incident on the first surface. The transparent structure also includes an exit surface opposite the first surface. The exit surface includes a first area that is textured to diffuse light over a first angular range and a second area that is textured to diffuse light over a second angular range. The second angular range is wider than the first angular range. 本发明的实施例包括发光二极管（LED）和设置在LED上方的透明结构。透明结构包括第一表面，该第一表面反射从LED提取并入射在第一表面上的光。透明结构还包括与第一表面相对的出射表面。出射表面包括第一区域和第二区域，第一区域被纹理化以在第一角度范围内漫射光，第二区域被纹理化以在第二角度范围内漫射光。第二角度范围比第一角度范围更宽。