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:
Nov. 23, 2021
Filed:
Oct. 17, 2019
Nissei Technology Corporation, Hyogo, JP;
Takuya Otsu, Tokyo, JP;
NISSEI TECHNOLOGY CORPORATION, Hyogo, JP;
Abstract
A wide-angle imaging optical system obtains sufficient information in the image periphery, and achieves high-performance imaging across the entire field of view. The imaging optical system uses stereographic projection, and includes, in sequence from an object, a first lens with a negative refractive power having a convex surface facing the object, a second lens with a negative refractive power, a third lens with a negative refractive power, a fourth lens with a positive refractive power, an aperture stop, a fifth lens with a positive refractive power, a sixth lens with a negative refractive power, and a seventh lens with a positive refractive power.