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:
Apr. 14, 2026
Filed:
Oct. 26, 2023
Mitutoyo Corporation, Kawasaki, JP;
Keiji Murata, Kanagawa, JP;
MITUTOYO CORPORATION, Kawasaki, JP;
Abstract
An optical device comprises: an image forming lens disposed in an optical path between an objective lens and an imaging device, the image forming lens forming an image of light incident via the objective lens on an imaging surface of the imaging device; a beam splitter disposed in an optical path between the objective lens and the image forming lens; a first lens group disposed in an optical path between the objective lens and the beam splitter and having a positive refractive power; and a coaxial epi-illumination optical system configured to be able to illuminate an imaging target via the beam splitter, the first lens group, and the objective lens, the coaxial epi-illumination optical system being arranged in an optical path different from the optical path in which the image forming lens is arranged.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile