US Patent 7382532 Microscope system

A microscope system includes a casing in which an optical element is housed, an airtight specimen chamber, and an environment control unit that controls temperature and humidity in the specimen chamber and also controls temperature inside the casing. An upper plate of the specimen chamber is an open/close lid opened and closed when inserting or removing a biological specimen. The casing becomes sealed by a bottom plate of the specimen chamber as the specimen chamber is set on the casing.