RE: So when do we get our first takeover bid?23 Jan 2024 00:08
The key points to bear in mind is that eye tracking doesn’t require QD based sensors. Plenty of eye tracking units out there not using anything beyond standard NIR silicone sensors. Meta Quest Pro is one such animal. A key difference is the accuracy and speed of the eye tracking in the VP, which does suggest some higher gain sensors, but who knows it could also be down to the software algorithms Apple have developed.
More suggestive is the Optic ID feature. This has to look at the iris, which means scanning the eye quite brightly. SWIR at around 1400nm is about six times safer than NIR, as it doesn’t penetrate the retina. AFAIK only two technologies which can reach that frequency, InGaAs and. QD-cmos. The former is out of the question for a consumer device, so that narrows it down somewhat. Sadly no news of a SWIR sensor sampling or in production yet, although we know that materials in the SWIR waveband were sent to STMicro.
The external IR sensors may also use QD’s, perhaps for speed and accuracy. Like eye tracking however this has been done with normal NIR cmos.