Not sure if you want these two items to be connected, but they are by laws of physics.
Anti-Newton glass is slightly frosted to prevent Newton’s rings and this frosting can show - depending on how the scanning kit resolves and where it is focused to.
The AN surface of the glass should point to the non-emulsion side of the film and should be closer to the backlight than to the camera for best AN and least diffusion effects.
Layering for best effect and least side-effect
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lens
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emulsion side of film
non-emulsion side of film -
AN side of glass
non-AN side of glass -
diffusor
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backlight