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.:
Date of Patent:
Aug. 08, 2017
Filed:
Jan. 06, 2015
Applicant:
Lg Innotek Co., Ltd., Seoul, KR;
Inventors:
Assignee:
LG INNOTEK CO., LTD., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V 3/00 (2015.01); F21V 5/00 (2015.01); F21V 5/04 (2006.01); F21V 5/08 (2006.01); G02B 3/00 (2006.01); F21Y 115/10 (2016.01);
U.S. Cl.
CPC ...
F21V 5/04 (2013.01); F21V 5/08 (2013.01); G02B 3/00 (2013.01); F21Y 2115/10 (2016.08);
Abstract
A lighting apparatus includes a body, a light source unit disposed on the body to generate light, and a lens disposed on the body to refract light generated from the light source unit. The lens includes a light introduction portion having a light introduction surface for introduction of light and a light emission portion having a light emission surface for passage of light having passed through the light introduction portion, and the light introduction surface of the light introduction portion and the light emission surface of the light emission portion are configured to satisfy cos a1−cos θ1/cos a2−cos θ2<0.