The initial operation of a 3D ToF sensor is fairly straightforward: light is emitted from the sensor, bounces off the target, and returns to a multipixel imager. The next part is a little more complex. As the light returns to the sensor, each individual pixel will report a different distance measurement point because it is receiving its own piece of the emitted light. The distance information for each pixel is determined by measuring the round-trip time from light emission to reception on each pixel. When the distance information for each pixel is combined, the sensor can create a fully three-dimensional picture of what it sees.