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. 12, 2016
Filed:
Sep. 10, 2012
Eigo Sano, Hino, JP;
Keiko Yamada, Sakai, JP;
Eigo Sano, Hino, JP;
Keiko Yamada, Sakai, JP;
Konica Minolta, Inc., Tokyo, JP;
Abstract
Provided is an image pickup lens that despite being small is favorably corrected for aberrations and has a five element configuration that is wide angle and has a bright F-number also provided is an image pickup device and a portable terminal using the image pickup lens. The image surface side of the fifth lens has an aspherical shape, has an inflection point at a position other than a position that intersects with the light axis, and satisfies the following formulae: −5.0<(r1+r2)/(r1−r2)≦−1.0 (1); 0.90<f1/f<1.70 (2); 0.35<ΣDL13/f<0.55 (3). Provided that r1: curvature radius of the first lens object side surface, r2: curvature radius of the first lens image side surface, f1: focal distance of the first lens, f: focal distance of the entire image pickup lens system, ΣDL13: distance on the optical axis from object side surface of the first lens to image side surface of the third lens.