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:
Jul. 29, 2025
Filed:
Dec. 06, 2022
Evident Corporation, Tatsuno-machi, JP;
Kazuhiko Yamanouchi, Nagano, JP;
Evident Corporation, Nagano, JP;
Abstract
A microscope objective includes: a first group including a plurality of meniscus lenses with a concave surface facing an object side; a second group including a first cemented lens closest to the object side; a third group consisting of a positive single lens; a fourth group including a first cemented meniscus lens with a concave surface facing the object side; a fifth group consisting of a second cemented meniscus lens with a concave surface facing an image side; and a sixth group including a third cemented meniscus lens with a concave surface facing the object side, the first to sixth groups being arranged in order from the object side. The microscope objective satisfies the following conditional expression.05|<0.15 (1) Where, f is a focal length of the microscope objective. f5 is a focal length of the fifth group.