attaching a lens to armytek wizard pro v3 to focus light

Hi, I know it is a stupid idea, pls. do not kill me for asking. I want to add lens to my headlamp to get more focused light. I have tried many lenses, but could not find one that would fit well. I had to put them too far from the lamp to focus light, but I need the lens to be on the headlamp. Is there a way to find a suitable lens?

Is this the only headlight you have? Is this for walking, working, indoors, outdoors,? Armytek headlights do not have a defined hotspot and put a lot of light out to the edge of the 120° spill. There are plenty of other lights that have defined hot spots that are fine for a lot of tasks. Sofirn sp40 has a good tight hotspot. For walking on trails it is miserable. For many other tasks it is fine. The newer sp40A is probably better. I carry an armytek for a few different reasons, one of them being the lack of a hotspot. So I would recommend getting a different light and see if the grass is greener.

I have more headlights, but I am trying to do some mods to Wizard and this is one of them.