Gear unit for focusing microscopes

Details Gear unit for focusing microscopes Gear unit for focusing microscopes

1996-07-31

1998-08-11

Nguyen, Thong

Optical: systems and elements

Compound lens system

Microscope

359383, 74 1052, 74425, G02B 2126, F16H 3518

Patent

active

057935262

ABSTRACT:
A gear unit (1) for focusing microscopes and having coarse adjustment, fine adjustment and extra-fine adjustment is described, in which, for the purpose of focusing, the object stage (5) is moved via a toothed gear (6). Coaxially arranged control knobs (7, 8) are provided on the microscope as manual control elements. The control knobs (7, 8) are connected via a drive shaft (9) and the gear unit (1) to a toothed rack (10) of the object stage. The control knob (7) for fine adjustment is provided on a rotation shaft (11) arranged so as to be capable of longitudinal displacement. Arranged on this rotation shaft (11) are at least two gear wheels (12, 13) of different diameter for fine adjustment and extra-fine adjustment. One of the gear wheels (12, 13) is connected to the gear unit (1) via the longitudinal displacement of the rotation axis (11).

REFERENCES:
patent: 3683704 (1972-08-01), Kuroha
patent: 4090069 (1978-05-01), Lisfeld et al.
patent: 4331039 (1982-05-01), Ruge
patent: 4575199 (1986-03-01), Lisfeld
patent: 4616517 (1986-10-01), Esmay
patent: 4919001 (1990-04-01), Ogiwara et al.
patent: 5365801 (1994-11-01), Nakamura

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