RE: Multigate transistors extend Moore's law7 Jun 2023 11:12
total speculation on my part, which may be completely wrong, but it fits to me.
apple's vision pro (we can finally name it now it's been released) has seen multiple delays, and probably those delays were related to other aspects of the design, i expect the displays were a big one- the silicone oled is very tricky to make to the extent only one company can currently provide the required spec. totally outside of nanoco or their partners control. also there have reportedly been many internal struggles within apple over the release of the device, where the design department felt things needed to advance to the level of a pair of normal glasses before release, whereas supply wanted something out there presumably so some software and apps can mature.
i strongly believe the vision will use qd tech, for one you have very accurate eye tracking with iris recognition, and although this can be done without qd's, i don't think it can be done as well as the vision does it, and then there is the issue of power use and eye safety for extended use, compared with say ba smartphone where it may only be used momentarily.
i believe eye tracking and iris recognition is likely to operate in the nir band, and it has to be eye safe for extended operation and very accurate and use the minimum amount of power possible.
i'm sure many here are aware that the nir is danagerous for the eye if the intensity is too high, and that danger increases as the exposure is extended. this is because the eye cannot regulate the intensity of the light as it would with visible spectra, e.g. by s*****ing. in addition, the sensors need to react quickly as the vision has a very fast refresh rate of 12ms, or about 83hz which has to include all the processing etc. plus the mask is enclosed which means you need artificial infra red light from led's.
as qd's can increase sensitivity around sixfold at a designated band over conventional silicon, seems like a perfect fit to me.
there are four of these sensors inside the vision unit.
swir could be used on external lidar, which would help speed capture up and allow the lidar to penetrate through things which may otherwise compromise it e.g. someone smoking or vaping etc.
also additional sensors to read hands, face etc. on the unit which will likely incorporate infrared, probably in nir band, these may or may not require qd's.