Adams Industries 3D filter
There isn't much info out there about them and this is the only info i could find on them was on their facebook:
The 3D Filter system actually includes a minus B filter as half the system.
The other half filters other spectrum components.
I can't go into too much detail, but basically by taking advantage of
how different wavelengths of light refract differently off the same surfaces,
we generate greater depth of field and information that your brain constructs as 3D for you.
However you won't get the full effect because you need to use both eyes to get the 3D effect... The below pictures are just a little idea of how it feels but it does not justify it.
Remember that one eyes sees the light version and the other sees the darker version... Its actually really cool because it gives much more contrast.