Negative lens and endoscope objective

US11428923B2 · kind B2 · utility

Assignee

• KARL STORZ SE & Co. KG · DE

Inventors

• Robin Hegenbarth · Tuttlingen, DE
• Walter Vogel · Niederwerrn, DE

Key dates

• Filing date: Apr 30, 2020
• Grant date: Aug 30, 2022
• Expiry date: Mar 13, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B2003/0093
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A negative lens, for an oblique-view endoscope objective, has a first face with a first optical surface and a second face with a second optical surface opposing the first optical surface, the second optical surface being a concave optical surface, wherein a recess is formed in the second face adjacent to the concave optical surface. An endoscope objective, that includes a deflection prism having an entrance face and further including a negative lens, the negative lens having a first face with a first optical surface and a second face with a second optical surface opposing the first optical surface, the second optical surface being a concave optical surface. The negative lens is mounted on a distal planar surface of the deflection prism such that a rim encompassing the concave optical surface abuts the distal planar surface of the deflection prism.