Patent ID: 9557552
Date: 2017-01-31
CPC Classifications: G02B

Claim:
1. An inverted microscope apparatus comprising: a stage on which a specimen is mountable; a revolver that holds a plurality of objective lenses and is configured to cause one of the plurality of objective lenses to be arranged on an observation light axis by a revolving motion, the revolver being an electric movable device that is electrically operable and configured to revolve electrically; an input device configured to input a command for operating the electric movable device; a focusing handle that is rotatable by a user operation; a manual focusing device that is not motorized and that is configured to adjust a relative distance between the stage and the objective lenses in response to rotation of the focusing handle by the user operation; an operation control device configured to control operation of the electric movable device; a state determining device that is a physical switch mounted on the revolver and that is configured to determine that the electric movable device is in an operable state when the objective lenses and the stage are separated by at least a specified interval and to determine that the electric movable device is in an inoperable state when the objective lenses and the stage are separated by less than the specified interval; and a restriction device configured to restrict an output of a control signal for commanding the operation to the operation control device when the command for operating the electric movable device is input by the input device if the state determining device determines that the electric movable device is in the inoperable state, wherein the revolver together with the state determining device is attachable to the manual focusing device, and is selectively replaceable with a second revolver that is not motorized and does not have the state determining device, and wherein the state determining device is mounted on a side of the revolver opposite to the objective lenses.