VR Goggles - Adjustable Focal Length

by Xion, published

VR Goggles - Adjustable Focal Length by Xion Oct 2, 2015
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Adjustable focal length VR Goggles. Occulus "Thrift".


  • 25mm Perspex lenses (Cardboard V1).
  • 2 x 3mm bolts
  • Hot Glue

Simply print the goggles and adjust the hood using 2 x 3mm bolts to friction fit the hood to the desired focal length.

Use hot glue to spot attach the lenses to the faceplate.

Edited 30th October, 2015

  • Updated the faceplate and mask to have a higher nose bridge to avoid pinching

Print Settings










If you've got bridging setup correctly you should be able to print the mask without requiring any supports. The one pictured here had no supports.



Some filing may be necessary to get the face plate to fit inside the mask, the tolerances are pretty tight but makes a very nice firm fit with a little bit of filing.

Hot Glue

Currently the lenses are hot glued to the opposite side of the face mask. I need to adjust the faceplate to accept different sized lenses.

You may also want to put a bead of hot glue down across the front of the mask and hood in order to stop any scratching of your phone surface. The dried hot glue makes a nice rubbery texture which should stop any movement and also provide a barrier to scratching your phone.

How I Designed This

Designed using Sketchup based on Google Cardboard.

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I am trying to build a set of night vision goggles using an ir capable camera and a reversing screen of a car I do not need 3d so I'll leave the divider out and the lens holder and print the back with a smaller opening to allow for the smaller screen, with a 10w ir led and have been having trouble with focal length this looks like it should do the trick thanks

It seems to work fine, it doesn't take much to adjust it so your eyes can focus nicely on the screen without causing too much eye strain. However I found I needed some foam either over the nose-bridge or across the mask to stop the weight of the mask is resting on your nose.