Rigid endoscope with second illumination system laterally offset from first illumination system

US6248060A · kind A · utility

Assignee

• MGB ENDOSKOPISCHE GERAETE GMBH BERLIN · DE

Inventors

• Gerhard Buess · Tübingen, DE
• Ernst Flemming · Heusenstamm, DE
• Wolfgang Juergen Kunert · Lörrach, DE
• Marc O. Schurr · Lörrach, DE
• Edward Naujoks · Berlin, DE
• Johannes Tschepe · Berlin, DE

Key dates

• Filing date: Feb 12, 1999
• Grant date: Jun 19, 2001
• Expiry date: Feb 12, 2019

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B1/07
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A rigid endoscope includes a jacket tube with an optical system and, parallel to the optical axis of the optical system, a first glass fiber bundle which emits a beam to illuminate an object to be examined. A second optical illumination system is directed at the object being examined. The second light exit of the second optical illumination system is recessed from the first light exit of the optical system by a distance greater than a diameter of the jacket tube. The light exit axis at the second light exit of the second optical illumination system is offset laterally relative to the image axis at the distal end of the optical system by an amount such that because of the resultant parallax and the shadow formation and unequal light distribution thus attained, the vividness of the image impression for three dimensional objects is increased.