Cardbroad mobile fpv goggle

This is a plan to make a mobile goggle.
You can use this goggle +bluetooth keyboard and earphone to watch a movie or control your camera drone or fpv vehicle.
It is not a 3D goggle so you do not need to worry about lens and focus.
All you need on top of the plan I provided are
1. a mirror 16cm x 9cm
2. a hud film 15cm x 13cm
3. a acrylic sheet to support hud film
4. your mobile.

If you use two hud film instead of mirror you can make this into a AR goggle.

These five images are all for A4size paper, so you can either print them with a normal printer then stick them onto the cardboard then cut it, or use the STL file to cut the cardboard with a CNC/Laser machine.
For the cardboard please choose a thickness lower than 4.4mm as it is designed for 4.4mm.
For makers who print the plan and stick it on onto the cardboard, the grey colour is the folding area and the black line is the cutting line.
For the CNC please use the cutter diameter 2.5mm as the gap width is designed 2.