VL53L1X cover

Hello. I would like to use the sensor (VL53L1X) in an outdoor environment. Therefore would like to cover it with some form of lens.
However all types of plastic and or glass I have tried seem to fail and reflect enough of the ToF laser to mess with operations.
Any ideas?

Thin, flat glass with the sensor touching the surface of the glass?

When I say thin, im talking like a glass microscope slide.