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:
Aug. 11, 2026
Filed:
Sep. 17, 2021
Denso Corporation, Kariya-city, JP;
Hiroshi Asami, Kariya-city, JP;
Yusuke Akamine, Nisshin-city, JP;
DENSO CORPORATION, Aichi-pref., JP;
Abstract
An imaging optical system of a present disclosure includes, in a sequential order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The fourth lens is configured such that (i) the light output surface has an aspherical concave shape, (ii) the light output surface has a center portion through which an optical axis passes, and a periphery thereof, and (iii) the light output surface has a portion where the negative refractive power becomes gradually weaker from the center portion toward the periphery thereof. The fifth lens has positive refractive power, a light input surface that faces toward the object side, and a light output surface that faces toward the image side. Each of the light input and output surfaces has a convex shape toward a corresponding one of the object side and image side.