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. 07, 2026
Filed:
Oct. 31, 2024
Asahi Kasei Microdevices Corporation, Tokyo, JP;
Takaaki Furuya, Tokyo, JP;
Ryotaro Okuda, Tokyo, JP;
Asahi Kasei Microdevices Corporation, Tokyo, JP;
Abstract
A compact and highly accurate optical density measuring apparatus that includes an ellipsoidal mirror and a folding mirror is provided. In the optical density measuring apparatus, the shape of at least a part of the inner surface of a light guiding part is composed of a figure of a part of an ellipsoid E, and a shape of at least a part of another portion of the inner surface of the light guiding part is composed of a figure of a part of a plane or a quadric surface. 60% or more of the area of a light source region of a light emitting part is present in a region R, and 60% or more of the area of a light receiving region of a light receiving part is present in a region R.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile