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Re: Computer displays that correct vision possible?

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Re: Computer displays that correct vision possible?

jimp@specsol.spam.sux.com05 May 2008 22:05
In sci.physics nuny@bid.nes <Alien8752@gmail.com> wrote:
> On May 5, 9:05 am, j...@specsol.spam.sux.com wrote:
> > In sci.physics Zetsu <absolutelyinvinci...@hotmail.com> wrote:
[quoted text clipped - 35 lines]
> > Vision problems are a result of the eye's lens being unable to focus
> > an image on the retina.

>   Correct. I was sorely confused at C. Watters' phrasing: "People who
> need glasses don't have a problem seeing
> things at the wrong distance".

> > There is nothing that can be done about that other than to put a
> > corrective lens (called glasses) in the system.
> >
> > Arm waving about "apparent distance" is babble unless there is a
> > separate lens involved.

>   I'm not entirely sure of that re: holography. As far as other so-
> called 3D display technologies (polarization, blink, etc.) are
> concerned I agree with you completely. However I know of no a priori
> reason a hologram cannot produce an image that my unaided eyes could
> see clearly (at a distance beyond my unaided maximum sharp focus
> distance) but "normal" eyes would see as blurred at the same distance.

How about basic optics as a good reason?

Signature

Jim Pennino

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nuny@bid.nes05 May 2008 21:23
On May 5, 9:05 am, j...@specsol.spam.sux.com wrote:
> In sci.physics Zetsu <absolutelyinvinci...@hotmail.com> wrote:
>
[quoted text clipped - 34 lines]
> Vision problems are a result of the eye's lens being unable to focus
> an image on the retina.

 Correct. I was sorely confused at C. Watters' phrasing: "People who
need glasses don't have a problem seeing
things at the wrong distance".

> There is nothing that can be done about that other than to put a
> corrective lens (called glasses) in the system.
>
> Arm waving about "apparent distance" is babble unless there is a
> separate lens involved.

 I'm not entirely sure of that re: holography. As far as other so-
called 3D display technologies (polarization, blink, etc.) are
concerned I agree with you completely. However I know of no a priori
reason a hologram cannot produce an image that my unaided eyes could
see clearly (at a distance beyond my unaided maximum sharp focus
distance) but "normal" eyes would see as blurred at the same distance.

 Not that I know that much about holograms (IOW I'm speaking from
ignorance above). So, any holography experts available? A quick Google
yields nothing relevant.

 Mark L. Fergerson

jimp@specsol.spam.sux.com05 May 2008 16:05
In sci.physics Zetsu <absolutelyinvincible@hotmail.com> wrote:
> On 5 May, 04:10, "n...@bid.nes" <Alien8...@gmail.com> wrote:
> > On May 3, 9:59 am, "CWatters"
[quoted text clipped - 20 lines]
> >
> >   Mark L. Fergerson

> "Near-sighted" refers to the ocular defect  where there is trouble in
> distance viewing, however I think what the earlier poster was pointing
[quoted text clipped - 5 lines]
> about here though is precisely what kind of 3D technology the original
> poster was hypothesizing should be utilized for this idea?

Vision problems are a result of the eye's lens being unable to focus
an image on the retina.

There is nothing that can be done about that other than to put a
corrective lens (called glasses) in the system.

Arm waving about "apparent distance" is babble unless there is a
separate lens involved.

Signature

Jim Pennino

Remove .spam.sux to reply.


Zetsu05 May 2008 10:24
On 5 May, 04:10, "n...@bid.nes" <Alien8...@gmail.com> wrote:
> On May 3, 9:59 am, "CWatters"
>
[quoted text clipped - 19 lines]
>
>   Mark L. Fergerson

"Near-sighted" refers to the ocular defect  where there is trouble in
distance viewing, however I think what the earlier poster was pointing
out is that having a 3D model would be no different than the normal
flat screen, "2D screen" that we have of today. For example, using a
3D model to mitigate the effect of distance bluriness would be no more
effective than simply bringing one's face closer to the conventional
type screen in order to see objects clearly. The thing I am curious
about here though is precisely what kind of 3D technology the original
poster was hypothesizing should be utilized for this idea?

nuny@bid.nes05 May 2008 03:10
On May 3, 9:59 am, "CWatters"
<colin.watt...@NOturnersoakSPAM.plus.com> wrote:
> "Amir Michail" <amich...@gmail.com> wrote in message
>
[quoted text clipped - 12 lines]
> things at the wrong distance - so correcting the apparent distance using a
> 3D effect doesn't help.

 Beg pardon? I am "nearsighted". Guess what the term means.

 Mark L. Fergerson

CWatters03 May 2008 16:59
> Imagine using a laptop without having to wear corrective
> eyeglasses.
[quoted text clipped - 4 lines]
>
> Amir

I don't think so... People who need glasses don't have a problem seeing
things at the wrong distance - so correcting the apparent distance using a
3D effect doesn't help.

Amir Michail03 May 2008 13:34
Imagine using a laptop without having to wear corrective
eyeglasses.

I know that 3D displays exist that don't require special glasses.

So maybe this is possible as well?

Amir

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