Patent · US Expired

Optic for an endoscope/borescope having high resolution and narrow field of view

US6639739B1 · kind B1 · utility

4Cited by

8References

18Claims

0Family size

Assignee

The Regents of the University of California · US

Inventors

Gary F. Stone · Livermore, US
James E. Trebes · Livermore, US

Key dates

Filing date	Sep 4, 2002
Grant date	Oct 28, 2003
Priority date	—
Expiry date	Sep 4, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG02B23/243
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optic having optimized high spatial resolution, minimal nonlinear magnification distortion while at the same time having a limited chromatic focal shift or chromatic aberrations. The optic located at the distal end of an endoscopic inspection tool permits a high resolution, narrow field of view image for medical diagnostic applications, compared to conventional optics for endoscopic instruments which provide a wide field of view, low resolution image. The image coverage is over a narrow (<20 degrees) field of view with very low optical distortion (<5% pin cushion or barrel distortion. The optic is also optimized for best color correction as well as to aid medical diagnostics.

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