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. 01, 2014
Filed:
Dec. 12, 2011
Hisanori Suzuki, Sukagawa, JP;
Shingo Watanabe, Sukagawa, JP;
Kenichi Kamada, Sukagawa, JP;
Kazuo Matsuoka, Saitama, JP;
Hisanori Suzuki, Sukagawa, JP;
Shingo Watanabe, Sukagawa, JP;
Kenichi Kamada, Sukagawa, JP;
Kazuo Matsuoka, Saitama, JP;
Kantatsu Co., Ltd., Yaita-shi, Tochigi, JP;
Abstract
An imaging lens with large aperture ratio, high-performance and low-cost is provided, which is applied to an imaging element of a small-size and high resolution, in which aberration is corrected satisfactorily and sufficient diffraction resolution is achieved. An imaging lens includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens arranged in sequence from an object side, wherein both surfaces of each lens are formed from aspheric surface, a diffraction optics surface exerting chromatic dispersion function is arranged on a surface on an image side of the second lens, each lens is configured from plastic material, and an aperture ratio is equal to or smaller than F/2.4.