Re: Re Sanyo 3D TV

[P3D Phil Spooner <phils@xxxxxxxxxxxxxxxxxxx>]

In-Reply-To: <7228.199604170822@xxxxxxxxxxxxxxxxxxxxxxxx>

> The glasses did
> not look like pulfrich effect to me  as both eyepieces were the same
> neutral density shade and they were quite large and bulky. One of the
> viewers thought the weight of them on the bridge of the nose would be
> uncomfortable after a while so thet seemed to be wireless LCD glasses.

I think I would go along with that.

> The
> little boy watching commented that they sometimes went wrong and the
> picture went fuzzy. 

That's a good clue. If they used the field flicker to toggle the glasses it would 
go pretty fuzzy if they went out of synch.

> I found there was a sensation of depth in what
> they were watching probably due to the movement. 

Me too. There was a sensation of depth. I think you are right about the LCD 
glasses. They were quite large and the viewers said they were heavy so they could 
have been battery operated LCD shutters.

Joerg was probably right in his earlier comment about using lenticular screens 
for viewing without glasses. I had once wondered about marrying a piece of 
lenticular material with an LCD to make a viewer that did not need glasses. I 
thought, if I could get a piece of material with the correct pitch, I could put 
it on the display of my laptop computer and display suitably digitised and 
processed 3D pictures. With an LCD it would be easy (if you could get lenticular 
material with the same pitch as the LCD pixels), but it would be difficult to 
maintain tolerances with a CRT display. However, I would have thought that the 
viewing angle would have been too small to have been of much use in a typical 
family viewing environment.

- Phil -
- phils@xxxxxxxxxxxxxxxxxxx -



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