Video microscope

Details Video microscope Video microscope

1993-05-21

1996-03-05

Nguyen, Thong Q.

Optical: systems and elements

Compound lens system

Microscope

359363, 359380, 359387, G02B 2106, G02B 2136

Patent

active

054972671

ABSTRACT:
A video microscope capable of optionally and continuously varying image pickup magnifying power of an observed object over a wide range without requiring replacement of a lens. A lens barrel in which a lens system is arranged is slidably positionally adjusted relative to an observation stand in which an illuminating light source is arranged by means of an objective distance adjusting mechanism, to thereby adjust a relative distance between the observed object and an objective side of the lens system. Also, a cylinder of a video signal converting section in which a two-dimensional CCD element is provided is slidably positionally adjusted relative to the lens barrel by means of an enlargement (reduction) magnification and focus adjusting mechanism, resulting in desired magnifying power of the observed object being readily obtained.

REFERENCES:
patent: 1418645 (1922-06-01), Hensoldt
patent: 4208089 (1980-06-01), Netto
patent: 4643540 (1987-02-01), Kawasaki et al.
patent: 4756610 (1988-07-01), Clark et al.
patent: 4922092 (1990-05-01), Rushbrooke et al.

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