Focusing drive for a microscope with flexible drive shaft

Details Focusing drive for a microscope with flexible drive shaft Focusing drive for a microscope with flexible drive shaft

1983-04-25

1986-03-11

Corbin, John K.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

74 108, 250201, F16H 3518, G01J 120, G02B 2126

Patent

active

045751994

ABSTRACT:
The drive has a manual coarse/fine focusing device using a gear drive and additional fine focusing using a motor. The latter is effected through an eccentric cam, rotatingly supported in a guide plate and coupled with the motor. A ball bearing rigidly joined with the object holder and the microscope stage rests on the eccentric cam. During operation of the motor, only the ball bearing and, thus, the microscope stage are raised or lowered; the gear drive for manual focusing remains stationary.

REFERENCES:
patent: 2669158 (1950-08-01), Frischmann
patent: 3887267 (1975-06-01), Heller
patent: 4090069 (1978-04-01), Lisfeld
patent: 4367915 (1983-01-01), Georges
"The Planetary Gear of the ORTHOPLAN", Ernst Leitz Wetzlar GmbH, printed in W. Germany.

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