2 ms·

I watched the embedded video, and I see how this could plausibly give you the distance that the photon travels between the laser and the object, but I don't see

I watched the embedded video, and I see how this could plausibly give you the distance that the photon travels between the laser and the object, but I don't see how you learn anything at all about its direction? Wouldn't the timing look identical for all points that are the same distance away from the point that the laser meets the wall?

exporectomy 5y ago
It requires the object to be moving. Presumably the shape of the burst of photons returned from a pulse changes as the object moves. It's obviously not simple time of flight distance measurement since that exists.