Photometer tube for microscopes

US4790663A · kind A · utility

Assignee

• Carl Zeiss Stiftung · DE

Inventors

• Bernd Faltermeier · Aalen, DE
• Martin Laudenberger · Murrhardt, DE

Key dates

• Filing date: Oct 19, 1987
• Grant date: Dec 13, 1988
• Expiry date: Oct 19, 2007

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B21/08
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A photometer tube for a microscope contains several switchable reflectors (5, 11). By the appropriate use of these, the ray path (c) for the back-illuminated measuring field stop (7) is reflected out of the photometry ray path (b) and is conducted to a second image inlet (32) of a beam splitter prism or prism slide. Various switchable elements (mirrors 5 and 11; stop 4; prism 2/22) in the tube are electrically driven and are centrally actuated from a control unit.