If you read the article:
https://community.st.com/s/article/Time-of-Flight-Cover-glass
it will explain the problem.
If your 'glass' is thick then all the other parameters have to be spot on.
Because all those issues are additive.
But say you make a coverglass out of:
AC400 Acrylic Oleophobic VIS A/R Coated UV-Block Protective Window from MidOpt.
(Not assocated with ST at all. They just sell optial plastics)
Thats got good optical qualities and is 3mm thick.
Find a way to put the sensor up against the window.
So of the 7 qualities, you are only really only violating one of them.
Then test it.
Before getting a range, the system must subract all the photons that hit the glass and return. So if that's a large number the number coming from the target must be large.
But if you are looking for large things - like people - you should be fine.
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