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:
Sep. 27, 2022
Filed:
Aug. 21, 2019
Olympus Corporation, Hachioji, JP;
Bunryu Arashi, Tokyo, JP;
OLYMPUS CORPORATION, Tokyo, JP;
Abstract
An immersion microscope objective includes a first lens group that consists of a first cemented lens consisting of a planoconvex lens and a first meniscus lens, the first meniscus lens having a thickness that is greater than a radius of curvature of a lens surface on an image side of the first meniscus lens, a second lens group that includes a plurality of second cemented lenses, a third lens group that consists of a third cemented lens, and a fourth lens group that includes a fourth cemented lens consisting of a plurality of meniscus lenses. The objective satisfies the relationship 2≤h1/h2≤4, where h1 indicates an axial marginal ray height at a lens surface of the third cemented lens that is closest to an object, and h2 indicates an axial marginal ray height at a lens surface of the third cemented lens that is closest to an image.