zalo wrote:I wonder how carefully the eye-relief must be adjusted; the spacial translation of the pupil as it looks around (with optics that close) could cause things to get screwy...
As a side-note, I had no idea WUXGA microdisplays, fiber optic collimators, and curved microlens arrays even existed, let alone were acquirable! They are all terrifying parts.
The fact that you saw this far ahead in 1996 demonstrates a great deal of vision.
I made
a thread a little while ago about the possibility of using ulexite to similar ends, but it's clear my approach was all too naive!
Yes... These are definitely not components you can find at your local Frys. Even so, they're not hard to find or fabricate if you know exactly what you need and are prepared to pay for it. I had a proof-of-concept done and was satisfied that the relief tolerances aren't nearly as great as they appear -- really no more than an ordinary pair of glasses. BTW: ordinary glasses will remap your FOV to some degree, but your brain just ignores the difference.
I checked your link and saw what you were going. It'd work, but you'd have an easier time with a standard fiber-optic image conduit from someone like Edmunds. I'm not sure what the results with the Oculus optics would be since they're designed to account for the off-axis image distance.
With respect to weight, we calculated about 3.3g per module for our new unit. This is somewhat less than the 89g you estimated, but we're starting from a much smaller display, a smaller volume (2.75 cm3), and using different materials -- in this case PMMA. PMMA is an optical plastic with a refractive index of ~1.49 and density of 1.20 g/cm3.
I'm familier with ulexite
![Very Happy :D](./images/smilies/icon_e_biggrin.gif)
-- Someone got me a piece years ago in relation to this work. It works because the fibers are cladded, allowing for internal reflection. It's amazing that stuff like this occurs naturally.