A method of optical distance and speed measurement related to radar. It involves the emission of laser beams. Sensors then detect the reflected light. The distance is calculated from the travel time of the light.
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Light field camera
The light field camera’s image sensor detects not only the brightness and colour values but also the many different incidence angles of the light beams. The focal plane can be adjusted to specific objects so as to place some image planes in sharp focus while others are out of focus.