Borofloat of UCL for 100W ?

cat · Dec 27, 2007

It seems that Borofloat lenses are used more often than UCL lenses, although I'd have thought that the UCL anti-reflective would be better.

Is it better or advisable to use Borofloat lenses for 100W applications?

Gunner12 · Dec 27, 2007

Borofloat will take the heat much better then UCL so that's why borofloat is used in really highpower incan mods(usually above 40 watt from what I see).

So for 100w, go for the borofloat unless you like cracked windows.

LuxLuthor · Dec 29, 2007

I will not use a UCL for 50W or above, despite the anti-reflective properties. You need the heat durability, especially when used in cold weather with expansion/contraction of parts. In over 50 Mag high power hotwires, I have never had a boro lens crack.

The other thing to consider when using a glass lens in a high output light...the anti-reflective properties become unnecessary.

jimjones3630 · Dec 30, 2007

forget who, someone posted a broken borofloat window pic they used on their 62138 mod.

Usually borofloat lens are 2 mm thick. I like using my asperical lens which is made of BK 7, a borofloat material but thicker. Increased heat resistance and gives more throw.

Borofloat of UCL for 100W ?

cat

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Gunner12

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LuxLuthor

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jimjones3630

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