Patent ID: 8992063
Filing Date: 2015-03-31
Classification: G02B

Abstract:
1. A light emitting diode (LED) package unit, comprising: a LED chip; and a light uniformization structure, formed above the LED chip in a direction of exiting light, wherein the light uniformization structure is only provided on a periphery part of the light emitting diode package unit but not provided in a center planar part inside the periphery part of the light emitting diode package unit, and the light uniformization structure is configured for converging light exiting from two side parts along a length direction of the light emitting diode package unit, wherein at least three triple prism columns which are arranged parallel to each other are disposed on each of the two side parts along the length direction of the LED chip and above the LED chip, the apex angle of the triple prism columns on one of the two side parts decrease in an equidifferent manner in a direction of leaving the LED chip; a base part of each triple prism column faces downwards and an apex angle opposite to the base part faces upwards, and the triple prism columns are perpendicular to the length direction of the LED chip and are arranged parallel to each other.