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You used to be able to buy a laptop where the
back
came off the screen so that you could put on an OHP for presentations. I
have no
idea what the quality was like, but it looks like the idea would
work.
Mark
----- Original Message -----
Sent: Friday, October 19, 2001 6:59
PM
Subject: RE: [ukha_d] I said I
wouldn't...
Andy,
You've no chance mate!
The LCD in an
LCD projection system is a totally different beast to that
in an LCD
screen. I've seen allsorts of guff in my time like ideas to
make a CRT
into
a projector, image enhancers and magnifiers but I have
never even heard
of
anyone attempting something like this simply because
it is not a viable
proposition.
IMO, the picture if you could see it, would be so
washed
out it would be
un-watchable and that's if you could sort out the
physical
problems with
the original LCD screen.
The best advise I can give
you is to start saving!
K.
> -----Original
Message-----
> From: Andy Laurence
[mailto:andylaurence@xxxxxxx]
> Sent: 19 October 2001 18:41
>
To: ukha_d@xxxxxxx> Subject: Re: [ukha_d] I said I
wouldn't...
>
> << The beam of light to project a moving
image is a very tight focused
> beam, passed through an LCD panel
about
an inch square to a very high
> quality lens to focus on a screen.
>>
>
> Yup, understand that.
>
> <<
An
overhead projector is a magnified view of a broad beam of
light
that
> is compressed by a lens, flipped, magnified in
another
lens then
beamed
> to the screen. >>
>
> That
too.
>
> << Overhead projector = £400 - LCD projector
£1000
and upwards - CRT
> projector = £4500 an upwards. Most of the cost is
in
the lens and to a
> degree the electronics. >>
>
>
I
understand that quality would be seriously lacking, but I
can't
afford
> £1000 let alone £4500. I can afford £200 for
a
cheap TFT screen and
£50
> for
> a cheap OHP. It'd be
nice to have something 6 feet high rather than
the
> 28"
>
screen I have at the moment.
>
> <<Although similar in
principal they are in fact very different
systems,
> sorry if
that's
bad news but I would say that this would be nigh on
> impossible to
achieve.>>
>
> Are you saying the principle is flawed or
are you saying quality would
be
> bad?
>
> Cheers for
the feedback,
>
> Andy
>
>
>
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