Re: On buying a new CRT these days...
Re: On buying a new CRT these days...
- Subject: Re: On buying a new CRT these days...
- From: email@hidden
- Date: Thu, 23 Oct 2003 10:03:10 EDT
In a message dated 10/23/03 9:36:46 AM, email@hidden writes:
>
Luckily, I don't spend 40 hours a week in front of my monitor. But it's
>
going to be interesting to watch it age over time at that Luminance level.
>
Heck, at the price I paid it for, I can almost afford to change it every
two
>
to three years! Still, I think you're right about driving it at 115 Cd/m2
>
ought to age it faster? We'll see just how much Luminance I'll loose over
>
time.
>
>
There are two factors in CRT aging. One is phosphor degrade. Since the
phosphors will fade no matter what, and will fade faster at higher luminance,
manufacturers are reluctant to put long life guns into monitors... on the
theory
that its a waste of money, since the screens will fade anyway. But its is
usually
gun drop off that actually ends up limiting older CRTs more than phosphor
fading... rather a chicken and edd situation. Your monitor may have more
powerful
guns with a longer life expectancy, so they may reduce the gun issue, but if
they are brighter than usual, they will still wear faster, and will definately
fade the phosphors faster...
One solution is to get a monitor with long life, high powered guns, and
resist running it at higher luminance, and turning it off or blacking it out
when
not actually using it(warm up times for CRTs make this a bit awkward...). This
will allow you to get all that you can out of your phosphor life. But as you
say, CRTs are so affordable these days, that I would be more worried about
whether I could still get a similar replacement in a year or two than the cost
of
the unit.
C. David Tobie
Product Technology Manager
ColorVision Inc.
email@hidden
www.colorvision.com
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