What laser and what lens are you talking about? \I have also got this issue badly. Is it an option to replace the complete lens or does it not have a decent overall positive outcome/effect ?
Probably cheap plastic lens..I got a Thor H series 3W blue 445nm practically brand new and used 3 short times before it turned bad quickly. Just by having it outside in my hand while the conditions were very damp aka moist humidity wise. Sinds that moment i have a big halo with curved streamlined lines in all directions. After i first tried to see what it would do with a few days in the dry rice thing. It didnt do well but rather the opposite. Now the lines within the large halo got animated and are all moving and alive at this point..
Hope this adds to getting some usefull help and/or insights into the nasty problem the laser quickly developed . Thnx in advance
Thats exactly where i got it from and ive baught many lasers there before this one. Even this model and specs are what i already owned that comes from lps. So no shady seller that nobody knows about that i had a 1 time gamble purchase at ..Just as a quick note - since Basho's Thor is "brand new", it has to have a glass lens. At least the LPS insist that their Thor lasers come with glass lenses for a couple years now or so...