Specifications

17
Near Field Imaging (NFI)
NFI is based on a proprietary topology/
imaging technology. The sensor layout is a
piece of glass coated with an Indium Tin
Oxide (ITO) pattern on the front side and
complete ITO coating on the back side. The
front of the sensor is optically laminated to a
layer of passive glass, typically .043” thick.
An excitation waveform is supplied to
the conductive sensor and generates an
electrostatic field which becomes the
baseline. When a finger or other conductive
stylus comes into contact with the sensor, a
change occurs in the electrostatic field. The
control electronics then subtract the change
from the baseline and determine the peak
imaging shape and location to establish the
x- and y-axis coordinates of the touch
location.