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Strange shape of new Thor M2 blue laser and strange "UV" effect?

rjalex

New member
Joined
Mar 17, 2019
Messages
4
Points
3
Dear friends,
I received a new Thor M2 laser a few days ago (had to wait to buy and receive the batteries and charger which were not included).

Although I find the laser quite "cool", I am not able to focus the beam into a tight circular spot.

When I focus it onto the room's wall, at its smallest the shape it projects is like a small thin bar, not a circle.

Is this normal? Can I do anything to correct this?

I'd also like to ask about a weird (but cool) effect: when I shine it on the room's wall and look through the green lenses of the glasses I bought with it, I can see fingerprints, hand smudges I guess from the skin oils which kind of glow like they were under an UV light. How does this happen?

Thank you very much.
 



diachi

Well-known member
Joined
Feb 22, 2008
Messages
9,745
Points
113
That shape is normal, nothing you can do to fix it without adding optics onto the end of the laser. Would require additional mounting hardware, adjustment and at least two optics. Even then, you'd have a square beam instead of a rectangular beam.

445nm is close enough to UV to cause similar fluorescence effects as UV. You can only see it with the goggles because they are blocking out the much brighter blue light.
 

WizardG

Well-known member
LPF Site Supporter
Joined
May 9, 2011
Messages
723
Points
63
The shape is normal for the high power blue diodes. You should have come here first if it bothers you.

But now that you're here you should introduce yourself in the 'Welcome' section.
 

paul1598419

Well-known member
Joined
Sep 20, 2013
Messages
16,062
Points
113
I just saw your intro post and am glad you did that. As has already been stated here your laser is acting normally and there is little you can do to change that. Enjoy your stay here.
 




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