Abstract: A lens module has a plurality of lens units which have focal lengths different from each other; an imaging device which focuses a subject light passing through one lens unit selected from the plurality of lens units on a common imaging plane to conduct photoelectric conversion; and a lens base which houses the plurality of lens units so that tip's faces of lenses at subject side in the plurality of lens units are disposed at the same position, wherein switching of light paths in the plurality of lens units is conducted by moving the entire lens base.