Fluke 175 backlight mod question - where is this phantom diffuser?

[defcon.klaxon]

Hi all,

I've been doing some searching around for how to mod my Fluke 175 to add a backlight, and I've found a few threads here that have given me the vast majority of what is needed but the one thing I've heard mentioned but can't find any info about is the diffuser used to evenly spread the backlight across the display.  I've looked through forums, Youtube teardowns, eBay and AliExpress, and general Google searches but I can't seem to find *any* info regarding this supposed phantom diffuser.  Can someone help figure out what this part looks like, and if it's available as a part to order?  I was also thinking I might be able to 3d print it in clear filament if I can get the dimensions.

Thanks!

[Arhigos]

You can disassemble any broken LCD from any other electronic device and pull that part, bend it with hot air gun and cut with dremel or Xacto knife..