Alaric Darconville
Flashlight Enthusiast
I like to use cut to fit opaque white plastic from milk jugs & fit them inside the globe. Diffuses the light well!
You may mean "translucent". Opaque materials do not allow light to pass through.
"Invisible" tape seems to work pretty well to help diffuse light. I've applied it to the lens of a headlamp that was full of artifacts but then got a nice floody beam after that. It also works well as a diffuser for small LED lanterns.