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3D images of moving objects can be achieved with a surveillance camera and four white light-emitting diodes. With these simple components, an imaging rate of 15 Hz is possible, limited by the camera framerate.
Autonomous mobile devices can self-locate, navigate and receive control signals using structured illumination from a light-emitting diode array. We present a prototype system and discuss the properties of the optical wireless control.
Arrays of GaN light-emitting diodes can be used for rapid display of pattern sequences or high speed parallel data transmission using different sites of the array. These operation modes can be combined with each other and are useful for light-fidelity networks with Gb/s capacity.
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