Hi
Just looking at the diagrams, I don't think the glass is half-silvered
- it looks like a large sheet of Polaroid™. It only needs to polarize
the transmitted light from the vertically oriented monitor, since the
reflected light from the interface between two materials (at least one
of which has a refractive index) will be polarized in any case (that's
why your Polaroid™ sunglasses let you see below the waves...). My
physics is too rusty to remember, but I think the vertical monitor in
this case needs to be polarized vertically, since the reflected
polarized light will be horizontal.
No idea where you can buy large sheets of Polaroid™ though.
IMWBW, though...
On 4 Feb 2008, at 11:30, P Hubbard wrote:
> Hi Andrew,
>
> Just like the commercial systems, the glass is the only special piece
> of kit (which can be bought separately). The LCD monitors are just set
> up to display either left or right channel. If you ask me, I think
> these companies are just a rip off!
>
> Paul
>
> > Date: Mon, 4 Feb 2008 11:24:32 +0000
> > From: [log in to unmask]
> > Subject: Re: [ccp4bb] 3D Glasses - Vuzix HMD by eDimensional
> > To: [log in to unmask]
> >
> > P Hubbard wrote:
> >
> > > Just an FYI.... you can build those yourself at a fraction of the
> price!
> > > You just need the special piece of glass, two identical LCD
> monitors,
> > > and an edited X config file.
> >
> > The clever bit of the Omnia system (and the similar one from Planar,
> > which being from the US might be cheaper there...?) is the DVI
> > "reflector" card that flips the image to be displayed on the screen
> seen
> > in the half-silvered mirror.
> >
> > Are you implying that an appropriately written Xorg.conf can get the
> > graphics card to do this instead? The prospect is very appealing!
> >
> > Regards,
> >
> > Andrew
> >
> > --
> > Dr. Andrew Raine, Head of IT, MRC Dunn Human Nutrition Unit,
> > Wellcome Trust/MRC Building, Hills Road, Cambridge, CB2 2XY, UK
> > phone: +44 (0)1223 252830 fax: +44 (0)1223 252835
> > web: www.mrc-dunn.cam.ac.uk email: [log in to unmask]
>
> Helping your favorite cause is as easy as instant messaging. You IM,
> we give. Learn more.
Harry
--
Dr Harry Powell, MRC Laboratory of Molecular Biology, MRC Centre, Hills
Road, Cambridge, CB2 2QH
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