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. 12, 2025
Filed:
Jul. 07, 2020
Hoya Corporation, Tokyo, JP;
Holger Zischke, Munich, DE;
HOYA CORPORATION, Tokyo, JP;
Abstract
It is provided an objective lens, consisting of, in order from an object side to an image side: a first meniscus lens and a second meniscus lens, both having a convex side towards the object side; a first condensing unit; an aperture stop; a second condensing unit. An apex of the second meniscus lens is spaced apart from the first meniscus lens. A total number of lenses in the first and second condensing units is not less than 4 and not more than 6. If a radius of the first meniscus lens on the image side is denoted r, a radius of the second meniscus lens on the object side is denoted r, and a radius of the second meniscus lens on the image side is denoted r, at least two of the following three conditions are fulfilled:; and