There is provided an input unit adapted for non-contact input manipulation, which permits a user to smoothly accomplish an intended input manipulation. The input unit includes: a position detecting portion for detecting a position of a manipulating object such as a user' s hand manipulating the input unit; a position change detecting portion for detecting a change in the position of a point on the manipulating object based on a detection output from the position detecting portion, the point being the closest to the position detecting portion; and an image display section. The position change detecting portion detects the change in the position of the point closest to the position detecting portion in a predetermined area. The image display section changes the display image according to a detection output from the position change detecting portion.
