HTC Vive VR Optics

liked the idea of these, but didn’t like the loss in FOV.
https://www.thingiverse.com/thing:1639833

these worked very well as lens protectors but having to wear glasses makes the experience less enjoyable
https://www.thingiverse.com/thing:1644118.

These optics are better than just wearing glasses, with a much wider focal sweet spot and they protect the vive. It's also much easier to put on and remove the headset.

With diopter -3.5 lenses mounted forward facing still have about 2mm of clearance between lenses so room for heavier diopter.

The lenses were taken from: http://www.zennioptical.com/550021-metal-alloy-full-rim-frame-with-spring-hinges.html. Used the cheapest cr39 plastic with AR coating. CR 39 has the least chromatic aberration (lowest abbe value) of any lens material. The design is built around these being set in the specific frames at an IPD of 63mm regardless of your actual IPD. Before removing lenses from frames, be sure to mark the top edge with a small dot