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:
Apr. 15, 2014
Filed:
Jun. 14, 2011
Ju-young Yoon, Suwon-si, KR;
Gi-cherl Kim, Yongin-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;
Ju-Young Yoon, Suwon-si, KR;
Gi-Cherl Kim, Yongin-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 for a light emitting diode is formed with a material having a refractive index of n, and the lens 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 therein. In the lens, a distance from a center of the base to a point of the curved center-edge surface is always 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. In addition, when an obtuse angle formed between a main axis of the lens and a tangent line of a point of the curved centermost surface is Aand an acute angle formed between a straight line linking the center of the base to the point of the curved centermost surface and the main axis of the lens is Athe lens satisfies the equation: A+A<90+sin(1/n).