An airbag according to the present invention has: an airbag main body that is provided with a gas introduction opening; and an inner cloth portion that is arranged to cover the gas introduction opening in the airbag main body. Chromatic aberration can be addressed by separating an image into color planes and then adjusting these to reduce chromatic aberration by using a specific calibration image as an empirical method to calibrate the image acquisition device. Further, the cooling unit is fixed to the heat exchanger through the heat absorbing unit. The memory access device is formed of a doped chalcogenide material and formed using a self-aligned fabrication method.