Recent content by Leoprix

However....I think to burn to 80/100 ft...nobody spoke of 170 ft!

Why Michael? I think, but correct me, that all we need is a suitable lens (beam expander?) to focus the beam at that distance. I don't think tha 30 meters of air will absorb to much mW of power.

What kind of lens are you using? And what can I use to go even further up to 30 meters? Thanks, Leonardo

So a good focused standard 600 mW green laser (2,5 mm round dot and <1 rad divergence) could be better than a 445 nm, 1,5W focused with a reflex lens? Sorry but now I am a bit confused. The way are: a) a 2 W 445 nm focused with a long length lens (as a 50 mm standard relfex lens) b) a 700 nm 405...

DrSid, Considering that is true. Could be good the 1 W 445 nm diode (pumped at near 2 W) or better a 12 x 405 nm diode driven up to 700/800 mW??

Sorry, what is the name of the company I posted? (Is the name of the 445 nm diode?)

Yes, DrSid. This is exactly what I mean. If I can have very good burning beam for a 2W 445 nm laser at 1 m distance, I can reach more or less the same dot (so the same burning energy) also at 20 or 30 m distance, obviously with a suitable lens. Could you tell me when you will have test your 1,5...

Thanks Arayan, but "n" ...what is? I can suppose that the "burning power" will depend also on how much the beam is focused. So I suppose that the "divergence" (calulated from the source) will depend on the focusing lens system setting. If the beam is focused near the laser, I think I will have...

As best alternative, you suggest a green DPSS Lab laser. I found some on ebay. But I have no experience to evaluate all tech characteristics to evaluate how much it will be suitable for long distance burning (Divergence? Exit beam dimension? Adjustable lens? Output power?). For example: A 300 mW...

Thanks for suggest. So I need a 12x instead of the Casio A140 diode. The V5 flex could be the driver, but what about the best lens to focus the beam at 20/30 meters away? Leonardo

Hi all, I'm going to build my first 1,5/2 W 445 nm diode laser using a 1w diode and FlexDrive V5. I would like to understand if it will be possible to install lenses to reach burning capability up to 60/80 feet. What is the best lens assembly to adjust focus up to that long distance? Thanks for...