IDENTIFYING OBJECTS BY MEANS OF ELECTROMAGNETIC RADIATION

摘要

Method of, and apparatus for electromagnetic identification of an object on one side of a window by an identification station on the other side of the window using electromagnetic radiation. The window is surrounded by a region generally opaque to the wavelengths or ranges of wavelengths used to identify the object. Relative motion is provided between the respective centre points of the window and the identification station, the motion including at least a component in a direction transverse to the line connecting the respective centre points, and a rotational component, to maximise the filed of view.