Not sure if the Oculus guys are reading here, but it would be interesting to get just a little bit more information on the technical side: - what kind of senso

Not sure if the Oculus guys are reading here, but it would be interesting to get just a little bit more information on the technical side: - what kind of sensor is it and why does it have to be a color sensor, vs a much cheaper plain photodiode which as far as I know works equally well for this task i.e. thresholding - what is the samplerate used, just out of curiosity - where is the sensor placed with respect to the screen - for a normal 'scanning' LCD display the right bottom pixels of the screen are presented about a frame later, so this seriously affects measured latency