Hi, I'm working on a tool that must be armed only in a proximity range of 0-5mm with different target materials. The sensor has a protection glass(1mm thickness) 3mm away so the real distance 0mm of the reported measures starts at 4mm from sensor. I had chosen the VL53L4CD for its precision in range 1-200mm but, with metal target (grey and reflecting), but I measure those values:
Real distance from glass[mm] Measured distance[mm] 0 18 5 6 10 1 15 4 20 18 25 25
There is a non-linearity in the distances that i want to consider to arm my instrument and also without the glass the behaviour persist.. With other target materials as paper, black target, white target, teflon etc. there aren't non-linearity. I'm using standard API with VL53L4CD_PROFILE_CONTINUOUS and TIME_BUDGET = 15ms.
Could you give me some suggestions? Thanks for your time, Andrea