To obtain a microscope which is easily used in a dark room by constituting a control panel having an operation means of a plural-layer structural body and making one layer of the structural body a layer containing light- stimulable material.

A rubber sheet-like key top 22 providing with a conductor 23 and a light-stimulable panel 24 are arranged on a printed circuit board 21. The panel 24 is arranged on the key top 22, and a decorative panel 25 is arranged on the panel 24 so that the panel 24 may be held between the key top 22 and the panel 25. Holes are bored on the panels 24 and 25 so as to fit to the key parts 6a to 6c of the key top 22. Therefore, light from the panel 24 can be confirmed from an upper surface. Since the panel 24 containing the light-stimulable material is used for a part of the keyboard structural body instead of a lighting means such as a light bulb or an LED on the control panel, the microscope having no anxiety about the burning-out of the light bulb and having an inexpensive and simple constitution is obtained, thereby, it is easy to use the microscope in the dark room.