Video endoscope with a light source operable in a continuous or stroboscopic mode

US4782386A · kind A · utility

Assignee

• RICHARD WOLF GMBH · DE

Inventors

• Felix Ams · Remchingen, DE
• Reiner Hoffmann · Mühlacker, DE
• Peter Jaggy · Rain, DE

Key dates

• Filing date: Mar 4, 1987
• Grant date: Nov 1, 1988
• Expiry date: Mar 4, 2007

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05B41/34
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A video endoscope has a strobe lamp operable in a mode wherein the strobing is synchronized to a selected tone or a periodic vibration in a patient, such as from the vocal cords, and is alternatively operable in a mode wherein the strobing is so rapid so as to appear as a substantially continuous light source. In the second mode, wherein the resulting image is to be displayed by a video system, the trigger circuit for operating the lamp is supplied with the video signal so that the lamp is triggered during either the horizontal or vertical blanking interval so that triggering of the strobe lamp does not cause interference in the video picture.