1. Electrostatic imaging apparatus for imaging the surface of an object located nearby, said apparatus comprising: (a) a plurality of electrostatic radiators; (b) signal generating means operatively connected to said radiators for driving said radiators in pairs with opposite phase clock signals to produce an electrostatic field; and, (c) electrostatic signal detection and processing means spaced from said radiators for sensing field characteristics of said field as modified by the presence of said nearby object within said field and for producing in response to said sensed field characteristics output signals representative of a surface profile of said object.