Optical: systems and elements – Lens – With support
Patent
1996-06-10
1998-04-07
Henry, Jon W.
Optical: systems and elements
Lens
With support
359381, G02B 716, G02B 2100
Patent
active
057371342
ABSTRACT:
A revolver control device of this invention includes a revolver rotatably formed and having a plurality of mounting holes which contain a specified mounting hole corresponding to a specified objective and in which a plurality of objectives containing the specified objective are respectively mounted, recognition circuit for recognizing at least one of one of the plurality of objectives and one of the plurality of mounting holes which lies on an observation optical axis, driving circuit for giving the rotation driving force to the revolver to move one of the plurality of objectives onto the observation optical axis, and control circuit for controlling the driving circuit to prevent the specified objective mounted on the revolver or the specified mounting hole from being passed through the observation optical axis by rotation of the revolver when at least one of the objective and mounting hole recognized by the recognition circuit is replaced by at least one of the plurality of objectives and mounting holes which is used as one of a target objective and a target hole.
REFERENCES:
patent: 4544236 (1985-10-01), Endo
patent: 4586794 (1986-05-01), Bierleutgeb et al.
patent: 4653878 (1987-03-01), Nakasato et al.
patent: 4961636 (1990-10-01), Gaul
patent: 5260825 (1993-11-01), Nagano et al.
patent: 5276550 (1994-01-01), Kojima
Nakagawa Shuji
Watanabe Akira
Henry Jon W.
Olympus Optical Co,. Ltd.
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