We have designed and shipped a water level sensor based on the VL53L1X. It works well in most situations, but we have one issue in a particularly large tank (3m tall, 2m diameter). I believe this is due to reflections in the tank. It is a black tank, but the surface is glossy.
I thought reducing the FoV might help with reflections, but the datasheet states this reduces range, but I can't really understand why. If the laser is pulsing light at the same power, and that light falls back on the SPAD, why does only looking at the center diodes affect range?
I think I'm misunderstanding how it works so I thought I would ask. I'm not sure there is much I can do in this situation and it may just be unsuitable for this particular tank.
Thanks
