Telephoto lens

US11635598B2 · kind B2 · utility

Assignee

• Leica Camera AG · DE

Inventors

• Alexander Martin · Regensburg, DE
• Michael Hartmann · Wien, AT
• Sigrun Kammans · Herborn, DE

Key dates

• Filing date: Mar 27, 2020
• Grant date: Apr 25, 2023
• Expiry date: Dec 18, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B9/64
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A telephoto lens having an entrance pupil of between 80 and 110 mm includes a lens head and a focusing component. The lens head, as a first optical assembly, consists of four lens elements with a refractive power sequence that alternates in the light direction. The focusing component is a second optical assembly made of at least two lens elements and has a relative aperture of between 1:4.5 and 1:7.