A novel pixel sensor structure formed on a substrate of a first conductivity type includes a photosensitive device of a second conductivity type and a surface pinning layer of the first conductivity type. The mirror control system further includes at least electrode for applying voltages thereon according to an analog scale for controlling each of the micromirrors to oscillate substantially around a central angle of oscillation varying between the fully-On and fully-OFF angular positions, according to an analog angular scale corresponding to the analog scale of the voltage applied to the electrode. The display unit displays a screen display having a controlled magnification level. The control section causes the display surface of displays, other than the display surface determined as being viewed by the user, to become darker than the display surface of the display determined as being viewed by the user. The flexible diaphragm divides the metallic vessel into a storage space and a pneumatic room.