Patent · US Active

Optical system for a video endoscope and video endoscope

US12181655B2 · kind B2 · utility

0Cited by

3References

20Claims

0Family size

Assignee

KARL STORZ SE & Co. KG · DE

Inventors

Harald Baumann · Tuttlingen, DE
Benjamin Häsler · Tuttlingen, DE
Marcel Hofstetter · Tuttlingen, DE

Key dates

Filing date	Oct 1, 2021
Grant date	Dec 31, 2024
Priority date	—
Expiry date	Feb 28, 2043

Classification

Technology area (CPC G)Physics
CPC primaryG02B2207/113
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention concerns an optical system, and a video endoscope therefor, with at least one electronic active pixel image sensor with a progressive offset micro-lens array, and a lens system with a plurality of lenses in order to receive image light from an object field and direct it to the image sensor. The optical system has at least one interference filter coating located within the optical system, such that the angle of incidence of the image light on the filter coating is minimized, minimizing thereby the filtration characteristics of the coating that are angularly dependent. This minimization improves the reliability of fluorescence imaging with short optical systems. The location for the filter coating may be on a curved surface, such as a lens, or on a properly positioned flat element within the optical system.

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