公开(公告)号：US10185287B2

公开(公告)日：2019-01-22

申请号：US15451864

申请日：2017-03-07

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hye Sog Lee ,  Jae Joong Kwon

IPC: G03H1/22 ,  F21V8/00 ,  G02B27/14

Abstract: An illumination apparatus includes a light source unit emitting coherent light in a first direction, a first light division unit, including a plurality of first slots, receiving the coherent light, each slot of the plurality of first slots reflecting a part of the coherent light in a second direction crossing the first direction, and a surface lighting plate including a plurality of second light division units, each light division unit of the plurality of second light division units includes a light guide through which light progresses, and each light division unit of the plurality of second light division units includes a plurality of second slots. Each slot of the plurality of second slots of each second light division unit reflects a part of the coherent light received from a corresponding slot of the plurality of first slots in a third direction which crosses the first and second directions.