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Fingerprint pattern on green laser

Uni23

New member
Joined
Aug 19, 2018
Messages
5
Points
1
Hello, I have recently purchased a green laser, and about a week after recieving it the laser became unforcused and the dot made a fingerprint pattern. What do I do?
 



Encap

Well-known member
Joined
May 14, 2011
Messages
5,250
Points
113
Hello, I have recently purchased a green laser, and about a week after recieving it the laser became unforcused and the dot made a fingerprint pattern. What do I do?
Return it
 

Singlemode Laser

Well-known member
Joined
Jun 25, 2017
Messages
303
Points
63
Remove the lens and look at the uncollimated beam. If it looks smooth, than your lens is dirty and/or broken otherwise the diode got damaged.

Singlemode
 




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