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. 07, 2015
Filed:
Dec. 27, 2013
Ability Opto-electronics Technology Co., Ltd., Taichung, TW;
Kuo-Yu Liao, Taichung, TW;
Chen-Hung Tsai, Taichung, TW;
Po-Jui Liao, Taichung, TW;
Chao-Hsiang Yang, Taichung, TW;
Ability Opto-Electronics Technology Co., Ltd., Taichung, TW;
Abstract
An imaging lens assembly includes first, second and third optical lenses that are arranged sequentially from an object side to an image side along an optical axis, and a constant-aperture diaphragm disposed between the second optical lens and the object side. Each of the first and second optical lenses has a positive refractive power near the optical axis. The third optical lens has a negative refractive power near the optical axis and has an object-side surface and an image-side surface, at least one of which has at least an inflection point. The imaging lens assembly satisfies: 0.55<f/Dg<0.85, in which, f is a focal length of the imaging lens assembly, and Dg is a length of a diagonal line of a maximum viewing angle in an imaging plane.