Patent attributes
An objective lens can be reduced in diameter, which allows examination inside a specimen such as a living organism with minimum invasiveness and also reduces costs. The invention provides a microscope apparatus including an objective-lens mounting part for removably mounting an objective lens unit; an apparatus main body for supporting the objective-lens mounting part so as to be movable in the optical axis direction; and an urging mechanism, disposed between the apparatus main body and the objective-lens mounting part, for urging the objective-lens mounting part towards the tip of the objective lens unit relative to the apparatus main body.