I think i'll just stick it in an envelope and send it to you Igor LOL you like challenges.....IgorT said:6mm OD or ID of the tube?
The battery is 5mm, so i'm guessing 5mm is ID, right?
A boost circuit could perhaps be made to fit. But it would have to be made specifically for that, and have the components fited along the length. The optics would be the real problem. Altho you could mount the diode into the tube directly, and the lens into the head, and adjust the focus by un/screwing the head.
Unfortunately, i don't know of anyone, that is going to be willing to make a special driver just for one laser, other than maybe yourself.
What would be easy to fit is an unregulated boost circuit. But for that to operate safely, you would have to use a MUCH lower current, since the current would not be stable.
This is not a constant current solution, not even a constant voltage one, and it uses the LED as part of the switching circuit (instead of the rectifier diode).Zom-B said:Only if it weren't 3 volts but 1-2V, this driver would surely fit. Although it works pulsed and you won't get full brightness. Perhaps with a filter with resistor and capacitor you will, but this doubles the volume of the driver