公开(公告)号：US09927091B2

公开(公告)日：2018-03-27

申请号：US15473590

申请日：2017-03-29

Applicant: Young Lighting Technology Inc.

Inventor： Hung-Wei Liu

IPC: F21V5/00 ,  F21V5/04 ,  G02B3/00 ,  F21W131/405 ,  F21Y115/10

CPC classification number: F21V5/048 ,  F21V5/045 ,  F21W2131/405 ,  F21Y2115/10 ,  G02B3/00

Abstract: A spotlight and a converging lens are provided. The converging lens has a light-emitting surface and a light incidence surface. An outer diameter of the converging lens is progressively decreased from the light-emitting surface toward the light incidence surface. The light-emitting surface has an opening. A maximum distance between the light incidence surface and the light-emitting surface along a thickness direction of the converging lens is H1, a maximum distance between a bottom surface of the opening and the light incidence surface along the thickness direction is H2, and 0.3×H1≤H2≤0.5×H1. The light incidence surface has at least one annular groove. The at least one annular groove has a central axis. The converging lens of the invention may converge light beam and mitigate a light spill phenomenon, and the spotlight applying the converging lens has good lighting quality.

公开(公告)号：US20170307172A1

公开(公告)日：2017-10-26

申请号：US15473590

申请日：2017-03-29

Applicant: Young Lighting Technology Inc.

Inventor： Hung-Wei Liu

IPC: F21V5/04

CPC classification number: F21V5/048 ,  F21V5/045 ,  F21W2131/405 ,  F21Y2115/10 ,  G02B3/00

Abstract: A spotlight and a converging lens are provided. The converging lens has a light-emitting surface and a light incidence surface. An outer diameter of the converging lens is progressively decreased from the light-emitting surface toward the light incidence surface. The light-emitting surface has an opening. A maximum distance between the light incidence surface and the light-emitting surface along a thickness direction of the converging lens is H1, a maximum distance between a bottom surface of the opening and the light incidence surface along the thickness direction is H2, and 0.3×H1≦H2≦0.5×H1. The light incidence surface has at least one annular groove. The at least one annular groove has a central axis. The converging lens of the invention may converge light beam and mitigate a light spill phenomenon, and the spotlight applying the converging lens has good lighting quality.