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:
Dec. 01, 2015
Filed:
Oct. 21, 2013
Samsung Display Co., Ltd., Yongin, Gyeonggi-Do, KR;
Ju-Young Yoon, Suwon-Si, KR;
Gi-Cherl Kim, Yonsin-Si, KR;
Jong-Seo Lee, Hwaseong-Si, KR;
Chun-Ho Song, Seoul, KR;
Se-Ki Park, Suwon-Si, KR;
Sang-Gil Lee, Seoul, KR;
Seock-Hwan Kang, Suwon-Si, KR;
SAMSUNG DISPLAY CO., LTD., Yongin, Gyeonggi-Do, KR;
Abstract
A lens has a refractive index of n, and includes a base, a first curved circumferential surface extending from the base, a curved center-edge surface extending from the first curved circumferential surface, and a curved centermost surface extending from the curved center-edge surface. The base includes a groove for receiving a light emitting chip. A distance from a center of the base to a point of the curved center-edge surface is shorter than the radius of curvature for the point of the curved center-edge surface. The curved centermost surface has a concave shape with respect to the base. The lens satisfies A1+A2<90+sin(1/n), where A1 an obtuse angle between a main axis and a tangent line of the curved centermost surface, and A2 is an acute angle between a straight line linking the center of the base to the point of the curved centermost surface and the main axis.