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:
Feb. 09, 2016
Filed:
Dec. 11, 2014
Kolen Co., Ltd, Seongnam-si, KR;
Chi Ho Ahn, Seongnam-si, KR;
Kyoung Soo Song, Seongnam-si, KR;
Ji Eun Kim, Seongnam-si, KR;
Chan Goo Kang, Seongnam-si, KR;
Seong Hee Bae, Daejeon, KR;
KOLEN CO., LTD, , KR;
Abstract
A photographic lens optical system includes: a first lens having a negative refractive power and a meniscus shape convex toward an object side; a second lens having a positive refractive power and a shape convex toward an image side; a third lens having a positive refractive power and a double convex shape; and a fourth lens having a negative refractive power and a shape convex toward the image side, wherein the first to fourth lenses are sequentially arranged in a direction from the object side to the image side, and the photographic lens optical system satisfies the following condition:0.15<|(tan θ)/|<0.25