Bar skiascope beam fixable in parallel

US5859687A · kind A · utility

Assignee

• HEINE Optotechnik GmbH & Co. KG · DE

Inventors

• Helmut A. Heine
• Anton Schneider · Gilching, DE
• Otto H. Schmidt · Herrsching am Ammersee, DE

Key dates

• Filing date: Jun 6, 1997
• Grant date: Jan 12, 1999
• Expiry date: Jun 6, 2017

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B3/1208
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A bar skiascope that has lens slide for displacing a condenser lens along a direction of a light beam also includes a stop slide that can be displaced up to a predetermined maximum position in a displacement path of the lens slide, wherein the condenser lens is located precisely in a position for producing a substantially parallel beam, when the stop slide is in the maximum position, and a stop slide stop element, belonging to the stop slide, and a lens slide stop element, belonging to the lens slide, come into contact with each other.