Software needed to make computer monitor out of focus

T

Tony\(UK\)

I know there are many disabled people who read ACF, so I don't think it
would be OT here.
I am looking for a utility to put a computer monitor 'out of focus', similar
to the diopter viewing ring on binoculars, so that someone who only wears
glasses for reading/computer can adjust the focus to compensate. Would I be
right in saying this could allow the computer to be used without putting
glasses on and off all the time? Or am I taking a simplistic view.

I am surprised that mobile phone and monitor manufacturers seem to have not
thought of this before, perhaps it would be more complicated to achieve than
I think.

Any thoughts on this please?

Tony(UK)
http://www.tony-smith.me.uk/disability_software.htm
 
N

Nicolaas Hawkins

I know there are many disabled people who read ACF, so I don't think it
would be OT here.
I am looking for a utility to put a computer monitor 'out of focus', similar
to the diopter viewing ring on binoculars, so that someone who only wears
glasses for reading/computer can adjust the focus to compensate. Would I be
right in saying this could allow the computer to be used without putting
glasses on and off all the time? Or am I taking a simplistic view.

I am surprised that mobile phone and monitor manufacturers seem to have not
thought of this before, perhaps it would be more complicated to achieve than
I think.

Any thoughts on this please?

Tony(UK)
http://www.tony-smith.me.uk/disability_software.htm
Click to expand...

I believe that what you want to do is not possible.
Suggest you ask your question again in the [sci.med.vision] newsgroup.
They will give you a more definitive answer (many of the participants are
qualified eyecare professionals), and explain the reasons.

--
Regards,
Nicolaas.

Pricelessware 2006 CD now available.
E-Mail for details: raptor740.gmail@com (swap "." and "@")


.... The trouble with political jokes is that they sometimes get elected.
 
K

KeithS

Tony(UK) wrote:

so that someone who only wears
glasses for reading/computer can adjust the focus to compensate. Would I be
right in saying this could allow the computer to be used without putting
glasses on and off all the time? Or am I taking a simplistic view.
Click to expand...
Won't work.
Out of focus is out of focus, your eyes can't compensate for what
isn't there.
PS, I use reading glasses
 
G

Geodanah

One thing to note also is that a computer monitor is not a projection
screen. The image is not whole in the back and enlarged at the front.
It is a cathode ray tube or LCD screen. This means that each individual
pixel is sent as data than either excited or turned on. You can't
adjust focal length as there is no focal length. To do this, you would
have to figure out where each pixel would be when "out of focus" than
completely rearrange the screen so that they are where you want them to
be. In other words, a real-time transform on 786k pixels.
 
M

mike

I know there are many disabled people who read ACF, so I don't think
it would be OT here.
I am looking for a utility to put a computer monitor 'out of focus',
similar to the diopter viewing ring on binoculars, so that someone who
only wears glasses for reading/computer can adjust the focus to
compensate. Would I be right in saying this could allow the computer
to be used without putting glasses on and off all the time? Or am I
taking a simplistic view.
Click to expand...
Like others, I believe this is not possible - fuzzy is fuzzy on the screen,
you can't put the sharpness back.

My solution to this (if you have normal sight, but have presbyopia - people
like me calendarly challenged, or is it maturely differently abled) you can
just use reading glasses) as I'm shortsighted, is to use a pair of cheapo
plastic reading glasses sitting on the top of my expensive varifocals, to
bring the top section up close.

These can be as cheap as a quid in poundstretchers, and work fine.

I have three pairs scattered around the hovel at convenient points

HTH

mike
 
O

Olaf Greck

Tony\(UK\) said:
Would I be
right in saying this could allow the computer to be used without putting
glasses on and off all the time? Or am I taking a simplistic view.
Click to expand...

Won't work.

Assuming glasses are needed by the viewer this glasses will bend the
incoming light so that the point of focus fits the particularities of
the eye. Similar the focus ring of a binocular will move the focus
point until the viewer sees a sharp/crisp image. This focus point can
move towards or away from the lens.

The computer screen does not move the point of focus forward of
backwards but would spread the "points that make up the picture"
across a plane that is orthogonal to the movement of the focus point
in the previous paragraph.

So we are talking about two different ideas of focus.

Just my ignorant attempt in explaining. HTH

best regards

Olaf
 
M

Margrave of Brandenburg

It's not easy to get a CRT out of focus ... you can adjust the focus control
on **some** TVs ... don't know if computer monitors have such a control. But
in any case, such a control would be hidden inside the box, inaccessible to
you.

Regardless, that still wouldn't help you. If you blur the picture, you can't
put it back in focus with lenses.
 
D

David

I know there are many disabled people who read ACF, so I don't think it
would be OT here.
I am looking for a utility to put a computer monitor 'out of focus', similar
to the diopter viewing ring on binoculars, so that someone who only wears
glasses for reading/computer can adjust the focus to compensate. Would I be
right in saying this could allow the computer to be used without putting
glasses on and off all the time? Or am I taking a simplistic view.

I am surprised that mobile phone and monitor manufacturers seem to have not
thought of this before, perhaps it would be more complicated to achieve than
I think.

Any thoughts on this please?

Tony(UK)
http://www.tony-smith.me.uk/disability_software.htm
Click to expand...

To me it sounds wrong. The eyes focus at a plane. Binoculars adjust
the focus point, as do spectacles, with respect to the retina of the
eye. The surface of the monitor is a plane and diffusing the focus
there would only produce a fuzzy image on the retina in my opinion.
Fuzziness on the screen of the monitor is just that. Moving closer or
further away does not alter the fuzziness or blur to a sharper image.

I changed from a 15" monitor to a 17" and now need to use glasses less
than before. I also sit further away from the monitor which improves
my focussing ability since I am long sighted.
 
T

Tony\(UK\)

David said:
To me it sounds wrong. The eyes focus at a plane. Binoculars adjust
the focus point, as do spectacles, with respect to the retina of the
eye. The surface of the monitor is a plane and diffusing the focus
there would only produce a fuzzy image on the retina in my opinion.
Fuzziness on the screen of the monitor is just that. Moving closer or
further away does not alter the fuzziness or blur to a sharper image.

I changed from a 15" monitor to a 17" and now need to use glasses less
than before. I also sit further away from the monitor which improves
my focussing ability since I am long sighted.
Click to expand...

Thank you to all that replied - and the repost to sci.med.vision. I hate
wearing glasses, believe it or not I have to wear a combination of five
pairs to be able to use the computer throughout the day - so you can see the
troubles when my mobile phone rings :)

Tony(UK)
 
V

Vic Dura

To me it sounds wrong. The eyes focus at a plane. Binoculars adjust
the focus point, as do spectacles, with respect to the retina of the
eye. The surface of the monitor is a plane and diffusing the focus
there would only produce a fuzzy image on the retina in my opinion.
Fuzziness on the screen of the monitor is just that. Moving closer or
further away does not alter the fuzziness or blur to a sharper image.
Click to expand...

This is correct.
 
J

john

How about getting a gigantic screen ? This can be a wall projector (there
are ones that you connect to your pc) or you can have a look at the new
apple CINEMA screens that work with PCs too...
The big one is 30 inches!

http://www.apple.com/displays/

or perhaps a plasma tv screen that can work at 800 x 600 that you can
connect to
the computers tv out?


of course this all costs money but your eyes will not have to strain in
order to
see through all those glasses....


--
Disclaimer: This info is given "as is".
If you do not like the content or attitude of my posts,
please put me on your ignore list or dont read my posts.

--
 
K

KeithS

Tony(UK) wrote:

John,
Have you had a look for TV screen magnifiers?
Google (UK Search) lists lots of places. Worth a try?
 

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