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Re: filmscanners: LED Illumination for Film Scanners
Raphael Bustin wrote:
> On Fri, 22 Jun 2001, Julian Robinson wrote:
>> Hey let's keep this clean and vaguely accurate even if it is OT...
> Austin went just a bit over the edge with that 1000
> hour MTBF figure.
Oh, what's a few orders of magnitude amongst engineers, anyway? ;-)
> I suppose if you figure in hard mechanical
> shock (like in Austin's Land Rover) the
> numbers might go down a bit. Time to fix
> the potholes in your driveway, Austin,
> or get new shock absorbers for that beast.
What type of display is used in things like VCR, tape deck and microwave
displays? It looks like it is almost a type of gas plasma/fluorescent
type of thing. Many of my older devices with those type of displays now
have considerable and uneven loss of brightness.
I sort of recall LEDs having pretty poor reliability many moons ago,
when they were mainly seen in NASA spacecraft, those large wrist watches
and Texas Instrument calculators, but I think 30 years has had it's
effect upon the design, eh?