Microscope equipped with an electric device for driving revolver and stage
US4653878A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1986 |
| Grant date | Mar 31, 1987 |
| Priority date | — |
| Expiry date | Feb 13, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B21/26
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A microscope equipped with an electric device for driving a revolver and a stage, having a means capable of rotating the revolver to interchange an objective only when a stage is lowered by a constant amount, a means capable of changing the movement speed of the stage for focusing in accordance with the magnification of the objective brought into a light path, and a means capable of restoring to an original position after the stage is once lowered to a lower limit position in order to be able to focus simply and rapidly and perform securely the interchange of the objective and the like. The electric device involves a step motor and, except when the stage is being driven, the connection between the motor and the stage is released so that the stage may be easily controlled by a manual operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.