Photomicroscope with a video camera and an exposure time control

Details Photomicroscope with a video camera and an exposure time control Photomicroscope with a video camera and an exposure time control

1995-05-18

1996-11-26

Callahan, Timothy P.

Optical: systems and elements

Compound lens system

With image recorder

348 64, 359368, G02B 2136

Patent

active

055791565

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.

REFERENCES:
patent: 4143938 (1979-03-01), Feinbloom
patent: 4302087 (1981-11-01), Reinheimer et al.
patent: 4567478 (1986-01-01), Schwab
patent: 4714823 (1987-12-01), Spruck et al.
patent: 4716470 (1987-12-01), Levine
patent: 4814814 (1989-03-01), Leiter
patent: 4871245 (1989-10-01), Ishikawa et al.
patent: 4958920 (1990-09-01), Jorgens et al.
patent: 5276550 (1994-01-01), Kojima
patent: 5331419 (1994-07-01), Yamada et al.

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