lens for cree XML

Hi all, I am new on CPF, and ca'n't find a thread about the Cee XML power led an which lens to choose.
So, for my scuba dive hobby in the darkness of the Netherlands i want to build my second cable lamp.
The battery is mounted on the aircilinder. in the lamp head I want to place 7 CREE XML power leds (LED-tech.de, mount on copper PCB.)
fyi, the battery is a Li-on 11.1V/9.2Ah. and the driver is a boost form Taskled.
btw, cooling is no problem, water enough around me, when the lamp is on.
I looked around for the lenses.
now I have a limit space from round 22 per lens
i found the Ledil, FA11937_LXM-RS.
can enyone advice my if this is a good choise?

regards Erik.

http://www.led-tech.de/de/High-Power-Zubehoer/Polymer-Optiken/CREE-7-Fach-Linse-12%C2%B0-LT-1730_106_108.html?cross=1730 from led-tech.de is a decent choice.

That was designed for XP-G. Will it work with XM-L?

DIWdiver said:

That was designed for XP-G. Will it work with XM-L?

Click to expand...

Missed that, but it is the one they list with the LEDs.
An email to them could clarify the question

It works, but isn't real tight. Id guess about 35 degrees in water.

I tested the solution as a primary light and didn't like it. The 7 xmls at 3amp simply resulted in a big flare of light everywhere you pointed. As a primary it did not make much sense to me in the end, though at lower amperage it might be ok for general diving purposes. Ie not cave, maybe wreck diving, ok for reef