Lee Goldberg presented this design at edn.com:
Although Intersil’s ISL29501 time-of-flight (ToF) signal processing IC doesn’t have anything to do with the lighting applications I normally cover, I felt compelled to bring it to your attention because it’s one of the most innovative LED applications I’ve seen this year. The device requires little more than an external emitter (LED or laser) and a photodiode to implement a complete object detection and distance measurement solution that provides precision long-range accuracy up to 2m in both dark and bright ambient light conditions.
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LED-based time-of-flight IC for object detection and distance measurement – [Link]
