Idea for one of the next Neos: Projecting the display via LEDs

Ulrik Rasmussen openmoko at
Mon Jan 22 20:18:25 CET 2007

Okay, I will take my statement back, it is indeed possible to bend light, but 
fitting a collapsed star into the Neo1973 will be kinda hard :D.
But, well, theoretically, if there existed a material where the refraction 
index could somehow be controlled, that would be a possibility. I guess this 
is something we will have to wait for nano technology to bring us.

- Sorry for the private mail Nigel, I forgot to reply to the list

On Monday 22 January 2007 12:43, Nigel wrote:
> Just for Interest:
> Two ways to bend light:
> On 1/22/07, Ulrik Rasmussen <openmoko at> wrote:
> > On Sunday 21 January 2007 18:46, Wil Chung wrote:
> > > Dr. H., I agree that it needs a beam scanner, on first though, but does
> >
> > it
> >
> > > have to be mechanical?  I know you can direct radio waves with
> > > something like a phase array, might not light be directed with a phase
> > > array?  I don't know, as it's just a guess since they're both E&M.
> >
> > I don't think it is possible to "bend light", so you'll probably need
> > some sort of mechanical device for it. However, I stumbled on this some
> > times ago,
> > which seems to fullfill the needs:
> >
> >
> >
> > It's basically a red and blue laser diode, aimed at a very tiny vibrating
> > mirror. The problem is, as the article says, that they can't use green
> > diodes, because these aren't small enough. I don't know the technical
> > details
> > for this obstacle though. Red and blue should be enough for text though,
> > at
> > least you will be able to render red, purple and blue.

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