Patent ID: 8749883

Claim:
An inverted microscope, comprising: a microscope main body; a stage which is supported by the microscope main body; and an observation optical system which allows observation of a sample placed on the stage from underneath, and which comprises an objective lens and a tube lens; wherein the microscope main body is adapted to receive therein an optical device which is detachably attachable between the objective lens and the tube lens of the observation optical system; wherein the microscope main body includes: a plurality of stage supporting parts which support the stage, and which comprise at least a pair of stage supporting parts provided respectively at opposing first and second sides of the microscope main body; a beam part which is arranged between the tube lens and the objective lens, and which connects at least said pair of stage supporting parts together among the plurality of stage supporting parts; an attachment area which is provided in a lower side area of the beam part and which is adapted to have the optical device attached thereto; and a pair of fitting grooves which are provided in the attachment area at said opposing first and second sides of the microscope main body, and which are adapted to have the optical device attached therein.