Photomicroscope with a video camera and an exposure time control for a still camera

US5579156A · kind A · utility

Assignee

• Carl Zeiss Stiftung · DE

Inventors

• Bernd Faltermeier · Aalen, DE
• Franz Trautwein · Aalen, DE
• Bernd Spruck · Heubach, DE
• Gerhard Herrmann · Schweinfurt, DE
• Bernd Meder · Lauchheim, DE

Key dates

• Filing date: May 18, 1995
• Grant date: Nov 26, 1996
• Expiry date: May 18, 2015

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B21/365
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A photomicroscope includes a port for a still camera (11) and an additional video camera (14). The video image of the video camera (14) serves both for the operation of a passive autofocusing system (23, 24) and for the determination of the exposure time for the still camera (11). The image areas that are used for exposure metering can be selected via a control panel (27). The integration time of the video camera (14) can be varied up to the range of minutes. The selected image areas are superimposed on the object image.