Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers



Laser Pointer Store

High power blue divergence

Joined
Dec 9, 2015
Messages
267
Likes
69
Points
28
Does anyone know the divergence of the 7+ watt blue lasers now available? Is it high enough that you can see an expansion in the beam if pointing it far away?
Thank you!
 

Joined
Mar 21, 2016
Messages
962
Likes
124
Points
43
Does anyone know the divergence of the 7+ watt blue lasers now available? Is it high enough that you can see an expansion in the beam if pointing it far away?
Thank you!

Don't get your hopes up, it's a trade off for power. Use a 3element lens for best divergence

You see expansion in 10'
 
Last edited:
Joined
May 14, 2013
Messages
3,798
Likes
505
Points
0
One more thing. At night do you think the beam of this laser is brighter than a 1 watt 520?
No but it should be close. I am sure someone here said they have both and that it is as bright as the 520, but the brightness calculator here: Relative Laser Beam Brightness Calculator: (450nm 7000mw) vs. (520nm 1000mw) says the 7W 450nm beam will be only 83% as bright as a 1W 520nm. I am not convinced though that the calculator is always correct.

Alan

Edit: Elly you are comparing the wrong 2 wavelengths.
 
Last edited:
Joined
May 14, 2013
Messages
3,798
Likes
505
Points
0
it actually puts out around 7.9 watts, and according to some members, this diode is closer to 462nm than 445.
Well then that's not the NUBM44, currently our most powerful diode available, it does over 7W but I hadn't heard of anyone driving it to 7.9W and it is 450nm. Can you tell me what diode you're talking about?

Alan
 




Top