In a casing of a humidity controller, a first heat exchanger chamber which accommodates a first adsorption heat exchanger, and a second heat exchanger chamber which accommodates a second adsorption heat exchanger are arranged next to each other in the left-to-right direction. The fundus camera is provided with a monitor, an observation device, a photographing device, a storage device, a mode selection device, and an input device. The method further includes creating a first in-situ p-type doped epitaxial region in the first opening and the second opening, wherein the first in-situ doped epitaxial region is created using the second material. Image data are transmitted in packet units to the portable telephone set from the camera in response to the reading command. Subsequently, the trench is filled with a first conductive layer and then recessed to a first depth.