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:
Jul. 04, 2017
Filed:
Dec. 28, 2015
Newmax Technology Co., Ltd., Tai-Chung, TW;
Fei-Hsin Tsai, Tai-Chung, TW;
Shu-Tzu Lai, Tai-Chung, TW;
Newmax Technology Co., Ltd., Taichung, TW;
Abstract
An optical imaging lens includes, in order from an object side to an image side: a stop, a first lens element with a positive refractive power, a second lens element with a negative refractive power, a third lens element with a refractive power, a fourth lens element with a positive refractive power, and a fifth lens element with a negative refractive power. A focal length of the second lens element, the third lens element and the fourth lens element combined is f234, a focal length of the fifth lens element is f5, and they satisfy the relation: −1.8<f234/f5<−1.0, so that the optical imaging lens would have an appropriate refractive power, and spherical aberration and astigmatism can also be reduced.