Photomicrographic apparatus

Details Photomicrographic apparatus Photomicrographic apparatus

1993-04-02

1994-07-19

Gellner, Michael L.

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354 79, 355 68, 355 71, G03B 708

Patent

active

053313682

ABSTRACT:
A photomicrographic apparatus, which takes a picture of an enlarged image of a specimen observed under a microscope, causes filter insert/remove means to insert a light intensity-reducing filter in the photometric optical path to a light-receiving element when the light-receiving surface illuminance of the light-receiving element exceeds the upper limit of a first photometry enable illuminance range, and makes the filter insert/remove driving means remove the light intensity-reducing filter from the photometric optical path to the light-receiving element when the light-receiving surface illuminance of the light-receiving element drops below the lower limit of a second photometry enable illuminance range.

REFERENCES:
patent: 3906519 (1975-09-01), Ueda et al.
patent: 3987463 (1976-10-01), Nishikawa et al.
patent: 4040067 (1977-08-01), Kondo

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