At least 2 EEs, another couple EE techs to fix prototype up boards that come in and prepare development boards for the software work.
You will have a couple people doing just regulatory work. Sign off on BT, USB, batteries, etc.
At least 1 ME, at least 1 industrial designer as well. 1 person in charge of optics.
1 software person to do board bring up, another person who specializes in Bluetooth because Bluetooth is a nightmare and you will have to work around different bugs on iOS and Android. Finally someone to do the actual firmware. You may get away with just 2 people, or you may need more, depending.
Someone had to design the box they come in.
The vending machines likely had a team behind them as well.
Then there is the marketing of the product, the glasses went viral fast, there was a team of people responsible for that.
And once all that is done, now you need a manufacturing team.
If the team was incredibly agile and efficient, maybe 20 people at the bare minimum.
Yes it's easy to build a single device... successfully scaling it to millions of devices is the hard part.
Also: "100x the resolution?" You obviously have no clue.
Says the expert with nothing to support your assertive claims.