Optical sensing technology
zForce (zero force) is the name for Neonode’s patented optical sensing technology built on infrared light, invisible to the human eye. zForce can sense any type of object, determine its size, its pressure on a surface, its depth (3D), its velocity and even its proximity to any type of surface.
zForce technology consists of a set of light emitters and detectors, an optical light guide with lenses and a controller IC that is connected to a host. The host runs Neonode´s proprietary embedded software stack and is connected to the controller. The controller IC regulates the light emitters, that emit short pulses of light in an intended sensing/interactive plane. The controller continuously monitors the light that is collected by the detectors and checks the ambient light in order to calibrate the system to work in all light conditions. Objects in the light path of the sensor cause intensity shifts in the received light. This information is used to initiate tracking of the objects. The size and position of each object is reported back to the host. By combining the measured value from a number of detectors, the position and object size are calculated. Compensations are also made for dust and other small particles on the optical surfaces, as well as for variations in component quality.
USPs - zForce
Neonode's reflective technology detects and traces objects using reflected infrared light. Our sensor module is comprised of an optical system arranged to combine emitted IR beams and receiver fields of the same apertures. IR light beams are emitted perpendicular to the output window, while the receivers field-of-view is centered at a certain angle left and right. The infrared lasers have a configurable scanning frequency of up to 900Hz, can track movement with 1.5mm accuracy, and have a response time up to 10 milliseconds.
Neonode's optical blocking technology is a light blocking technology which provides multi-touch interaction using a minimum of components, making it a cost-effective solution for high-volume applications. When an object such is present it blocks a portion of the light and the position of the object is calculated. Touch area and size works on any surface and it is tailored for ultra low latency and power consumption. It can be customized to fit any resolution, power consumption. Available in a range of lengths, both vertical or horizontal integration is possible for greater design freedom.