Objective lens switching device

Details Objective lens switching device Objective lens switching device

1998-09-22

2000-11-28

Schuberg, Darren

Optical: systems and elements

Compound lens system

Microscope

359821, G02B 2100

Patent

active

061543128

ABSTRACT:
An objective lens switching device of the present invention is a device in which assembly and adjustment in order to correctly position each objective lens on an optical axis are easy and a switching action can quickly be performed with certainty without receiving an influence of a mounting condition of objective lenses or a change in the revolver over time in use. A CPU reads an angular displacement from an angle sensor from a revolution position of a turret outside a detection range of an engagement sensor and issues a command of start braking to a driver when the angular displacement reaches a predetermined given angle. A revolution position of the turret at which the CPU starts the braking is correctly set all the time since the detection range of the engagement sensor and an engagement position of the turret are correctly adjusted.

REFERENCES:
patent: 4486078 (1984-12-01), Hashimoto et al.
patent: 4544236 (1985-10-01), Endo
patent: 4961636 (1990-10-01), Gaul et al.
patent: 5719699 (1998-02-01), Otomo

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