In a camera module (20) , a flange section (1a) which protrudes to the outer circumference side is arranged on an opening end portion of a lens tube (1). The flange section (1a) is formed to be fitted in a module integrating section (8a) formed on an upper case (8), and the lens tube (1) and a lens (2) are permitted to form a part of an exterior of a portable telephone. Thus, in the conventional constitutions, a certain space or a protection panel is not required to be arranged on an upper portion of a camera module, and a cushioning material is not required to be arranged on a lower portion of the camera module. Thus, a case section of the portable telephone incorporating the camera module is thinned and the portable telephone itself is thinned.