Manual
13
FUNCTION IS INCORRECT
If one or more of the above modules are blocked
by some cause, the projected keyboard image
may not be displayed correctly or, the location
and movement of the typist’s ngers may not be
recognized correctly. Use only a completely at
surface.
4. IDENTIFYING PARTS AND
THEIR FUNCTIONS.
1. Projector: Uses a red laser to project the image of a
keyboard onto a at surface in front of the typist.
2. Sensor: Picks up the infrared light reected off the
typist’s ngers and triangulates the location of the
reected light to determine which key was pressed.
This sensor provides a keyboard function.
3. IR Light Window: Uses an infrared laser to emit an
invisible plane of light a few millimeters above the
projection surface so that the infrared light can be
reected off of the typist’s ngers to the sensor.