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:
May. 05, 2015
Filed:
Dec. 31, 2013
Kolen Co., Ltd., Gyeonggi-do, KR;
Chi Ho Ahn, Seongnam-si, KR;
Jae-Hoon Cho, Seongnam-si, KR;
Ji Eun Kim, Seongnam-si, KR;
Chan Goo Kang, Daejeon, KR;
Se Jin Kim, Seoul, KR;
Kolen Co., Ltd., , KR;
Abstract
First, second, third, and fourth lenses (in order from an object side) are arranged between the object and an image sensor where an image of the object is formed. The first lens may have a positive refractive power and may be a meniscus lens that is convex toward the object. The second lens may have a positive refractive power and may be a meniscus lens that is convex toward the image sensor. The third lens may have a positive refractive power and may be a meniscus lens that is convex toward the image sensor. At least one of an incident surface and an exit surface of the fourth lens may be an aspherical surface. The fourth lens may have a negative refractive power or a positive refractive power. A viewing angle θ of the lens optical system may satisfy a conditional expression, 2.5<|tan θ|<3.5.