To obtain a clear image surely when a character, a figure or the like written on a paper is picked up.

In a portable electronic apparatus 1, an imaging unit 8 adjoining to a hinge 4 and extending to the almost same direction as a hinge 4 is so provided that an imaging axis 10a thereof is orientated to a direction that bisects a set development angle while a cover 2 and an operation unit 3 are opened. When the portable electronic apparatus 1 is mounted on a prescribed flat face F so that inner faces 2a and 3a of the cover 2 and the operation unit 3 are made lower, a distance Dr of the flat face F and the imaging unit 8 should be made almost equal to a focal length Df of the imaging unit 8.