High Temp lens?

MikeHunt79 · Oct 31, 2006

I'm building a modded mag that will be running a 65w IRC bulb at over 100w.

Will I need a special lens to cope with the heat? I've got some mineral glass lenses from fenix-store, but I'm not sure if they're up to it. What do you guys use in your 100w + mags?

chesterqw · Oct 31, 2006

how about the borofloat(did i spell it correctly?) from http://www.flashlightlens.com/?

or if possible, don't use a lens...

Sub_Umbra · Oct 31, 2006

If you need a heat resistant lens bear in mind that fit may be very important. Even borofloat must have room to expand when it gets hot or it will break.

scott.cr · Oct 31, 2006

I used a Borofloat lens (from flashlightlens.com) in front of a 130W lamp with no problem. The key issue here may be thermal shock, as the aftermarket glass Maglite windows are very thin. YMMV. I was very careful during experimentation phase with the 130W setup to avoid flying bits of glass just in case something blew.

BTW, any of the "float" or "borosilicate" glasses will have improved resistance to thermal shock over mineral glasses.

eebowler · Oct 31, 2006

Borofloat glass is a different version of Pyrex. It really is the best thing available for your intended purpose.

andrewwynn · Oct 31, 2006

borofloat is what i use in my >100W lights.. i will be getting some of those mineral glass from "7777" and i don't suspect any problem with them, i love the price and the smooth edges!

avoid the UCL.. they can't take the heat.. i've cracked 3 from 100W lights.

-awr

MikeHunt79 · Nov 1, 2006

Ok, thanks guys... Borofloat lens ordered... Bulb's are on their way, this hotwire is pretty much finished... Beamshots soon.

Lighthound have borofloats, so I'm gonna order now.

High Temp lens?

MikeHunt79

Newly Enlightened

chesterqw

Flashlight Enthusiast

Sub_Umbra

Flashlight Enthusiast

scott.cr

Flashlight Enthusiast

eebowler

Flashlight Enthusiast

andrewwynn

Flashlight Enthusiast

MikeHunt79

Newly Enlightened

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