DrSid
0
- Joined
- Jul 17, 2010
- Messages
- 1,506
- Points
- 48
Did anyone tried 445 nm diode with large aperture lens ? I was doing some experiments with 62mm aperture diameter, 500mm focal length photographic lens .. and it looks promising !
I only tested my low-powered direct drive, which does under 100mW with my current battery, so I can't really much about burning capabilities .. but I can get dot under 1x1 mm on 10m distance.
I could not test it at longer rangers at the moment, and I don't expect it to be much better at long distances, as the problem with 445nm is different divergence in each axis, which this setup does not solve at all. But it seems to extend the distance where dot is getting smaller with range a lot. It would help with medium range burning.
I'm working on how to mount my 1.5W to the thing.
I only tested my low-powered direct drive, which does under 100mW with my current battery, so I can't really much about burning capabilities .. but I can get dot under 1x1 mm on 10m distance.
I could not test it at longer rangers at the moment, and I don't expect it to be much better at long distances, as the problem with 445nm is different divergence in each axis, which this setup does not solve at all. But it seems to extend the distance where dot is getting smaller with range a lot. It would help with medium range burning.
I'm working on how to mount my 1.5W to the thing.