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. 28, 2020
Filed:
Jul. 24, 2017
Nidec Sankyo Corporation, Nagano, JP;
Tadashi Komiyama, Nagano, JP;
NIDEC SANKYO CORPORATION, Nagano, JP;
Abstract
The wide-angle lens includes seven lenses and is provided with a diaphragm between the fourth lens and the fifth lens. The first lens is a negative meniscus lens whose convex surface faces the object side. The second lens is a negative meniscus lens whose at least one surface is an aspherical surface and whose concave surface faces an image side. The third lens is a negative meniscus lens whose at least one surface is an aspherical surface and whose concave surface faces the object side. The fourth lens and the fifth lens are positive lenses. The sixth lens is a negative lens whose concave surface faces the image side. The seventh lens is a double convex lens whose convex surfaces face both of the object side and the image side, and configures a joined lens with the sixth lens.