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:
Oct. 29, 2024
Filed:
Dec. 11, 2020
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Qinghua Zhao, Nara, JP;
Yoshio Matsumura, Osaka, JP;
Abstract
An imaging optical system has an image circle defined on an imaging element. The imaging optical system includes: lens elements arranged from an object side to an image plane side, and a diaphragm arranged between two of the lens elements. The lens elements include freeform lens elements, each having a freeform surface that is an asymmetrical surface with respect to a long side direction and a short side direction which cross with each other with a first diameter of the image circle in the long side direction being larger than a second diameter of the image circle in the short side direction. At least two of the freeform lens elements are located on an object side of the diaphragm. The imaging optical system satisfies a condition based on a summation for freeform surfaces of freeform lens elements located on the object side of the diaphragm.