logo

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10935199 B1

PDFFull Text
Date of Patent:
Mar. 02, 2021

Filed:

Jun. 28, 2019

Lighting device having non-planar diffuser with array of 3d elements

Applicant:

Lg Innotek Co., Ltd., Seoul, KR;

Inventors:

Jae Hyuk Jang, Seoul, KR;

Jin Su Kim, Seoul, KR;

Seung Jong Baek, Seoul, KR;

Dong Hyun Lee, Seoul, KR;

Assignee:

LG INNOTEK CO., LTD., Seoul, KR;

Attorney:

KED & Associates LLP

Primary Examiner:

Ismael Negron

Int. Cl.
CPC ...
F21V 5/02 (2006.01); G02B 5/02 (2006.01); F21S 10/00 (2006.01); F21V 8/00 (2006.01); F21S 43/20 (2018.01); F21S 43/245 (2018.01); F21S 43/239 (2018.01); G02B 30/36 (2020.01); F21V 5/04 (2006.01); F21Y 105/00 (2016.01); F21Y 115/15 (2016.01); F21Y 115/10 (2016.01); B60Q 3/64 (2017.01); F21V 33/00 (2006.01);
U.S. Cl.
CPC ...
F21S 10/005 (2013.01); F21S 43/239 (2018.01); F21S 43/245 (2018.01); F21S 43/26 (2018.01); F21V 5/04 (2013.01); G02B 6/0036 (2013.01); G02B 6/0065 (2013.01); G02B 6/0068 (2013.01); G02B 6/0073 (2013.01); G02B 30/36 (2020.01); B60Q 3/64 (2017.02); F21V 33/006 (2013.01); F21Y 2105/00 (2013.01); F21Y 2115/10 (2016.08); F21Y 2115/15 (2016.08);
Abstract

A light device includes a light guide member having first, second and third portions. An array of light-modifying elements are formed on one main surface of the light guide member, and each light-modifying element having surfaces inclined with respect to at least one of the main surfaces of the light guide member. The light-modifying elements are configured to diffuse incident light. A light source (or light sources) is provided on a substrate, and configured to project light along a thickness direction of the light guide member. The first and third portions of the light guide member are provided at different distances from the substrate, with the second portion being inclined to an acute angle with respect to the substrate.

Find Patent Forward Citations

Loading…