Patent · US Active

Lens barrel and optical apparatus

US9759985B2 · kind B2 · utility

0Cited by

0References

14Claims

0Family size

Assignee

Canon Kabushiki Kaisha · JP

Inventor

Daisuke Ochi · Munich, DE

Key dates

Filing date	Dec 15, 2015
Grant date	Sep 12, 2017
Priority date	—
Expiry date	Dec 15, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG03B2205/0046
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The lens barrel includes a main aperture stop, a first sub aperture stop including a first stop blade and a first driving member rotatable about an optical axis to drive the first stop blade in its open and close direction, a second sub aperture stop including a second stop blade and a second driving member rotatable about the optical axis to drive the second stop blade in its open and close direction, and a cam barrel including a first cam portion engaging with a first engagement portion provided to the first driving member and a second cam portion engaging with a second engagement portion provided to the second driving member. The cam barrel is rotatable about the optical axis to rotate the first and second driving members.

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