To provide a hand-held device with built-in fingerprint sensor provided on a control panel, which does not ruins the operability of the movement of a cursor or a pointer of the display screen. The device includes a source of invisible radiation, a source of visible laser radiation, an alignment component to align the central axis of the visible radiation with an axis parallel to the central axis of the invisible radiation, and a switch to turn off the visible laser source. More specifically, a DLC film in which the refractive index decreases continuously in at least one width direction from the center O of the DLC film, and thereby the DLC film functions as a convex lens.