Re: Liquid optic or cooling element ?

On Nov 15, 8:48 pm, "Adam Norton" <AnortonREMOVET...@xxxxxxxxxxxxx>
wrote:
Water makes an effective IR blocking filter. Too much power, though, and it
can boil.

--
Adam Norton

Norton Engineered Optics
Optical design and systems engineering for Silicon Valley and beyond.www.nortonoptics.com

(Remove antispam feature before replying)

Thank's ---- It is one of the possibilities I thought of , and it
would make sense protecting a sensitive slide, but now I got the
projector box here , I can also see the massive optics of the rest of
the condenser lens, and if I am not wrong --- guess I am --- but there
are so heavy amounts of glass before the water, these are the thickest
condensator lenses I seen, yet originaly the max. lamp are a 220 volt
500 watt bulb, ---- so how much Ir light would that create.

But you coud proberly be right, as when contacting other collectors,
what I was told was, that "they" did newer care about heat at all,
except for the heat at the slide.

Now this projector box was delivered under same type name, but without
this gadged , that gadged turned out to weigh some 3-4 kilogram, so I
wonder if it could be an experimental thing, if it is about protecting
the slide as you suggest.

Anyway I tried it with a projecting lens from a "simular" projecting
system that fit allmost onto the edges and screws, it work splendid
with a 400 mm. also Leitz lens , without the item slided in, --- so I
can soon try adding clean water ,and see what happen.
Thank's
.

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