Planar Scatter Detection
Planar Scatter Detection (PSD) relies on the basic principles Frustrated Total Internal Reflection. Infrared (IR) light is injected in the sensor substrate from the edges. The IR light travels via Total Internal Reflection within the substrate and is disturbed or scattered by any object touching the surface of the substrate. Alternately the IR light is injected and analyzed, scattered light from a touch points is detected at the edge of the sensor substrate and used to calculate the touch.
Advantages
- No touch overlay or coating required, so no layers that can be worn
- No brightness or contrast loss, PSD offers superior image clarity and high light transmission.
- Can be sealed to NEMA 4/IP 65 standards, making it ideal for extreme conditions or environments.
- Comes with a Windows 7 compliant driver
- Extreme resolution
- Insensitive to ambient light
- Flat, flush multi-touch solution
- Can detect up to +20 touch points simultaneously
Disadvantages
- Few major suppliers
- Can not recognize objects or markers
Product types
- Display
Partners
