Lithophane

Designed with Fusion 360
LED Strip 3 m
The picture need an Black Edge to guaranteed 3mm thicknes the Black Edge can ne 0.5mm this is enough.
Lithophane Pictures settings:
Model Flat
Settings, Model Settings, Maximum Size 150 mm Thickness 3 mm
Settings, Image Settings, From Negative to Positive Image

Light i used Led push light with an diameter 70 mm and hight 25 mm

I have added on extra part when you want to use ledstrip which run with battery