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:
May. 27, 2025
Filed:
Aug. 26, 2020
Nikon Corporation, Tokyo, JP;
Masashi Yamashita, Tokyo, JP;
Tomoki Ito, Kawasaki, JP;
Tomonori Kuribayashi, Yokohama, JP;
Keigo Koida, Kawasaki, JP;
Satoshi Miwa, Yokohama, JP;
Yoko Komatsubara, Yokohama, JP;
Katsuya Watanabe, Yokohama, JP;
Azuna Nonaka, Yokohama, JP;
Ayumu Makida, Kawaguchi, JP;
Nikon Corporation, Tokyo, JP;
Abstract
This optical system (LS) has an aperture diaphragm (S) and a negative lens (L) disposed closer to an object side than the aperture diaphragm (S) and satisfies the following conditional expression.−0.010<1−(2.015−0.0068×ν1),50.00<ν1<65.00, 0.545<θ1,−0.010<θ1−(0.6418−0.00168×ν1). Where, ndN1 is a refractive index of the negative lens with respect to a d-line,
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile