Patent · US Active

Optical system, optical apparatus and method for manufacturing the optical system

US12222478B2 · kind B2 · utility

0Cited by

5References

15Claims

0Family size

Assignee

NIKON CORPORATION · JP

Inventors

Masashi Yamashita · Osaka, JP
Tomoki Ito · Kawasaki, JP
Tomonori Kuribayashi · Yokohama, JP
Keigo Koida · Kawasaki, JP
Satoshi Miwa · Wako, JP
Yoko Komatsubara · Tokyo, JP
Katsuya Watanabe · Ozu, JP
Azuna NONAKA · Yokohama, JP
Ayumu Makida · Kawaguchi, JP

Key dates

Filing date	Aug 26, 2020
Grant date	Feb 11, 2025
Priority date	—
Expiry date	Aug 26, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG02B15/1461
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical system (LS) has a lens (L11) that satisfies the following conditional expressions. −0.010<ndLZ−(2.015−0.0068×νdLZ)50.00<νdLZ<65.00 0.545<θgFLZ −0.010<θgFLZ−(0.6418−0.00168×νdLZ)

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.