Fresnel lens, recovers in an old flat TV

[Christophe]

Good to know, you can get beautiful Fresnel lenses in the 1st generation of flat TVs (with internal projector). Watch this little video http://www.youtube.com/watch?v=sAT6IRBK_uE

For the record the first I had seen was in 1-92 at Fnac Strasbourg, displayed at the price of ... 93 francs! Yep 100 frs of the time, in short in the 000-100 euros currently ...

So what do we piss off today with purchasing power? We really became dirty selfish consumers of shit !!!

[Christine]

In the same genre, I remember the first portable DVD player: 8000 frs in a locked window.

Now, it’s hardly if you don’t find them as a gift in cereal boxes.

[Christophe]

Ah, am too young

By cons I bought mine 800-900 frs I think ... in the same years ... maybe a little before 91-92? I do not know anymore...

[Christine]

You're sure ? I'm talking about things with a screen that we stick to the bacon in cars so that they close it while watching a disney ... it didn't exist in 91.

[Christophe]

Ah yes read too quickly ...

I thought you were talking about portable CD players ... the first ones must have cost 1 francs in the mid-5000s ...

Should I get the neighbor's doc: this is an advertisement for household appliances from the late 90s ... You will cry over the prices!

So on the EM; we really have become too spoiled dirty kids!

[Christophe]

Good to return to the subject, there is also a superb Fresnel lens in old overhead projectors:



Must have dozens of them rotting in each high school or college !!

REMUUUUUUUUUUUUUUUNDO CHERIIIIII are you there ???

[bham]

Nice Fresnel lens, I didn't know it focused like a parable
Christophe are you considering a solar DIY with that?

[Christophe]

If I find one yes ... not easy!

There I already have an old TV dish to be stripped!

[Superform]

For fresnel lenses, I had a dozen a year and a half ago ...

It is useful when you want to make a DIY projector ...

Go see on the forum allinbox, there are always some on sale in the appropriate section

http://forum.allinbox.com/aspectgeek/Ve ... ujet-1.htm

avoid fresnel on Ebay at all costs, they are very fine, flexible, and of poor quality.
See http://diy-beamer.com in lenses / fresnel. Then you choose the focal ...

[bham]

See http://diy-beamer.com in lenses / fresnel. Then you choose the focal ...

The prices are reasonable, failing to be able to recover, remains to be seen the use that can be made of it ..... heating a stirling engine?