Infrared Touch Screen Technology

To truly understand the ShadowSense advantage, it’s important to explore other touch technologies, how they work, and what they can do.

Infrared touch screens operate by calculating light-beam interruption, or “beam break”, to determine the location of touch events. This is a perimeter-based touch technology differing from Surface Acoustic Wave, in that infrared light beams are used and not ultrasonic waves.

Infrared Screen Grid

How Does It Work?

Using LEDs and light sensors placed on the vertical and horizontal axis of a bezel, the Infrared system casts a grid of light across the screen. When an object touches the screen, it interrupts the light beams on the grid causing the light to be blocked from the sensor. This loss of light is used to determine the location of the touch. Since the LEDs and sensors make a grid, the touch results in an X and Y coordinate from the beam break. These coordinates then communicate with the display to react with the software on screen.

 

Features Comparison

Infrared ShadowSense™
Operates with gloves or wet hands
Durable & long lasting
4K touch resolution
Ambient light immunity
Object transparency detection
False touch rejection
Drivers required
Touch response time 10 ms and up under 10 ms
Clarity Great Great

 

Limitations of Infrared Touch Screens

  • Can be accidentally activated due to high ambient light
  • Suffers from lower resolutions creating inaccurate touch points
  • Cannot distinguish between user input or foreign objects like mud or insects crawling on the screen
  • Response times are slow as the operation is CPU intensive

 

The ShadowSense Advantage

Infrared touch screens have several issues that can impact their performance. ShadowSense touch screens are similar to infrared touch screens as both use infrared light and both have sensors, but that is where the similarity ends. ShadowSense has significant advantages over conventional infrared touch technology. Curious? – discover the ShadowSense advantage.

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Ready to leverage ShadowSense?

Baanto offers unparalleled touch technology through ShadowSense. Our technology outperforms other touch technologies while yielding cost savings.

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