HTC Vive VR Optics

thingiverse

I 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 to know which way is up. One holder fit the vive a little too loose so I stuck a few small shims of masking tape to the inside edge (of the lens holder). Wanted the fit loose to make insertion/removal easy but tight enough so doesn't fall out during regular use. To assemble just snap the lenses in to the holders (locate the upper lip of the lens in the groove and gently stretch/snap the bottom in) with the convex side facing the vive, the same as if sitting in glasses. Carefully insert the lower edge into the vive first and then get the top edge in. Don't force down and don't expect a click or any positive feedback, they just sit on the inside lip - the lens must not touch the vive. They may interfere with the IPD mechanism, make any IPD adjustments to vive prior to inserting the holders. Note my lenses were not round, slightly oval, if the lenses don't fit adjust in the blender file (object Lens LH), scaling 's' around the 'Shift' Z axis. The other must have mod is the welding mask, I was able to unsnap some joints on a $10 mask and 'thread' it through the existing holder, then just use the top Velcro strap to attach to the front headband, better than a printed attachment - takes all the weight off your face. Printer Settings Printer: MendelMax Rafts: Doesn't Matter Supports: Yes Resolution: 0.3mm layer height Infill: 20% Notes: Set support angle to 45 degrees, check in slicer preview that the lens groove isn't being filled. The walls are pretty thin, if they de-laminate a bit, repair with superglue.