sony time-of-flight (tof)
The value of 3D image sensors
In addition to imaging in X and Y directions, 3D image sensors also acquire the Z-direction information, enabling 3D sensing. 3D sensing opens up the possibility of discerning things that are difficult with conventional 2D images, as in inspection based on volume or shape, or discerning overlapped objects. It is also a promising technology for applications utilizing relative distance information in real tie, such as automated control or collision avoidance system.
Features of ToF 3D image sensors
ToF sensors measure the distance by using the time difference until the reflected light is detected by the sensor. The light is typically generated by a laser or a LED. There are two main types of ToF. Direct ToF (dToF) involves a simple, direct measurement of the time until reflection is detected. Indirect ToF (iToF) measures distance by collecting reflected light and discerning the phase shift between emitted and reflected light.
The iToF products such as IMX556/IMX570 are especially effective in high-speed, high-resolution 3D imaging of objects at short and long distances.
Examples of ToF imaging applications
Automation and labor-saving innovations are becoming key factors for applications using industrial machineries.
ToF sensors, acquiring accurate depth map is one of these key factors. It meets growing needs in recognition, measurement, automation, and other areas such as in production lines, logistics and smart technology in agriculture and livestock.