公开(公告)号：US20180340672A1

公开(公告)日：2018-11-29

申请号：US16052173

申请日：2018-08-01

Applicant: Seoul Semiconductor Co., Ltd.

Inventor： Eun Ju KIM ,  Bang Hyun KIM ,  Young Eun YANG

IPC: F21V5/04 ,  F21K9/64 ,  H01L33/58 ,  H01L23/31 ,  G02F1/1335 ,  G02B3/04 ,  G02B3/02 ,  F21V5/00

Abstract: A lens including an upper surface having a curved portion having a changing curvature in a direction extending away from a central axis of the lens, and a lower surface having a concave portion disposed on the central axis of the lens. The concave portion of the lower surface includes an entrance disposed on a lower region of the concave portion and configured to receive light emitted from a light-emitting diode chip, and an upper end surface disposed on an upper region of the concave portion. The concave portion includes a width that narrows in a direction extending away from the entrance. The upper end surface is nonplanar.