Optisches System und Bildaufnahmevorrichtung

Details

Veröffentlichungs-Nr.

EP4722780

Anmeldetag

2. Oktober 2019

Veröffentlichung

8. April 2026

Rechtsraum

EP

IPC

G02B13/24, G02B9/64G02B9/64(NODA TAIGA et al.)(MATSUI TAKUMI et al.)(CANON KK et al.)

Abstract

The optical system according to the present invention consists of a first lens unit with positive refractive power disposed closest to an object side, a middle group including at least two lens units, and a final lens unit with negative refractive power disposed closest to an image side. The middle group includes a first focus lens unit configured to move during focusing, and a second focus lens unit disposed on the image side of the first focus lens unit and configured to move during focusing. An aperture stop is disposed between two lenses included in the middle group. A lens surface at the object side in a lens disposed closest to the object side in the first lens unit is convex toward the object side Here, a focal length of the optical system, a focal length of the final lens unit, and a focal length of the second focus lens unit are appropriately determined.

Anmelder

Firma

Canon Kabushiki Kaisha

Land

🇯🇵 Japan

Fachgebiete