INFRARED TOUCH - Add-on Type

How it Works.

Infrared technology relies on the interruption of an IR light grid in front of the display screen. The touch frame or opto-matrix frame contains a row of IR-light emitting diodes (LEDs) and photo transistors, each mounted on two opposite sides to create a grid of invisible infrared light. The frame assembly is comprised of PCBs on which the opto electronics are mounted and are concealed behind a IR-transparent bezel which shields the opto’s from the operating environment whilst allowing the IR beams to pass through.  When touching the screen one or more of the beams are obstructed resulting in an X and a Y coordinate being sent to the control electronics to indicate the exact touch point.

Concept.

The “Add-On” range of Infrared Touch frames are primarily aimed at large sized LCD and Plasma monitors.  Their design enables them to fit attractively over the front of the monitor and be secured to existing mounting holes on the rear of the monitor case.  No disassembly of the monitor is required which would void the manufacturers warranty.  Because Infrared requires no overlay as such to work, the picture quality of your large screen monitor is in no way degraded.

Care is taken when designing the touch bezel so that no on/off button or infrared remote control sensor on the monitor is obscured. There is a large range of standard frames available however if your monitor is currently not covered a custom solution can be provided.

Specification

Input Method	Finger or gloved hand activation
Resolution	0.125”
Position Accuracy	Typically 2.5mm
Touch Activation Force	None, no force required
Operating Voltage	9~12V DC
Power	6W
Transmissivity	100%
Response Time	>10mS
Touch Life	60 Million touches on a single point
Operating Temp.	-20°C ~ +85°C
Storage Temp.	-40°C ~ +85°C
Operating Altitude	3,000m
Interface	RS-232C

Highlights & Benefits

• Sizes from 30.0” ~ 100” diagonal.
• High Reliability and stability - Hostile environments will not cause any sensor drift.
• High transmissivity – Because the sensor is around the edge of the display light transmission from the display can be up to 100%.
• Drift Free, one time calibration only.
• Long service Life – IR touch has no wear our mechanism.
• Easy Activation – Because touch pressure is not required, no special material or stylus is required for touch activation. The stylus can be soft, hard, conducting or non-conducting.
  

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