Flashlight Lantern Diffuser (To Fit Emisar D4 Quad LED)

This is an experimental print designed to work with the Emisar D4 with quad LEDs. The side walls are very thin so it should work well with opaque white filament.

Print with no infill, especially if using translucent filament as some will get through the parabolic reflector and we don't want to waste that light.

It should print fine with no supports when oriented upside-down (opposite to the cross-section image).

Inspired by: https://www.reddit.com/r/flashlight/comments/8tnuj9/3d_printable_advanced_diffusers_feedback_welcomed/