Patent · US Active

Relay optical system for a rigid endoscope

US10816790B2 · kind B2 · utility

0Cited by

4References

15Claims

0Family size

Assignee

avateramedical GmbH · DE

Inventors

Ali Khettal · Berlin, DE
Fabian Weise · Berlin, DE

Key dates

Filing date	Jun 14, 2018
Grant date	Oct 27, 2020
Priority date	—
Expiry date	Sep 8, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH04N23/555
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A relay optical system for a rigid endoscope has two identically formed lens systems which are arranged symmetrically to each other with respect to a plane of symmetry that is perpendicular to the optical axis. The lens systems each comprise a first biconvex lens, a biconcave lens, a rod lens having a convex lens surface facing the plane of symmetry and a concave lens surface facing away from the plane of symmetry, and a second biconvex lens, in this order as viewed from the plane of symmetry.

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