Times ago i found glasses with LCD shutters as lenses, and a cable with a 3,5mm jack (probably some experiment for 3D or "secret reading" with PC and audio output, but it's just a guess)
I think i still have them around, but at the moment i don't have any idea about where i've put them ..... anyway, i had found them in an electronic fair .....
Don't know if there's something similar selled around, actually ..... maybe these units used for 3D cinema, but they are wireless and a lot expensives, afaik .....
I've found a few on eBay which should work, but they were all from international sellers with limited specs available. I suspect the ones you have were like the Sega goggles, used for some very early 3D games.
It's (not at all) odd that nVidia are hyping their 3D as "all-new" but Sega's goggles are over 10 years old now (and most still working fine albeit in DIY projects)...