Infrared Touch Screen
An infrared touch screen uses an array of X-Y infrared LED and photodetector pairs around the edges of the screen to detect a disruption in the pattern of LED beams. The LED beams cross each other in vertical and horizontal patterns. When a user touches the screen, the sensors detect an interruption in the X-Y infrared pulses enabling the controller to calculate the touch location.
A major benefit of such a system is that it can detect essentially any input including a bare finger, gloved finger, stylus or pen. It is generally used in outdoor applications and point of sale systems which can't rely on a conductor (such as a bare finger) to activate the touch screen. Unlike capacitive touch screens, infrared touch screens do not require any patterning on the glass which increases durability and optical clarity of the overall system.
Excellent calibration stability
High level of display clarity and light transmission
Can detect a bare finger, gloved finger and stylus input
Durable glass surface
Markets and applications
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