OPTICAL STRUCTURE FOR LIGHT-EMITTING DIODE DEVICE AND LIGHT-EMITTING DIODE DEVICE FOR LIGHTING APPLICATION INCLUDING THE SAME

摘要

An optical structure for a light-emitting diode (LED) device, and an LED device for a lighting application including the same. The optical structure includes a light guide plate and a prism sheet, the light guide plate having first and second surfaces facing away from each other, the prism sheet is disposed on a peripheral portion of the first surface, and includes a plurality of prisms continuously arranged in one direction to form a pattern. At least some prisms have an asymmetrical structure in which light-refracting surfaces have different inclinations.