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Blue Laser 301 doesn't focus as far as green

Lagomorpha

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Nov 20, 2019
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Hi. I have a couple green 301s and a couple blue ones. I noticed that neither of the Blue ones have a focus that screws out more than a tiny bit and my greens adjust really far out. Is this something that happens with all blue ones or just the ones that I have gotten? I have one more arriving today and I am hoping it focuses farther, but I sorta doubt it will.
 



paul1598419

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Sep 20, 2013
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I don't have any 301 lasers that use blue diodes. The greens are all DPSS 532nm lasers, much different from a direct diode laser like all the blue ones. That excludes any 473nm lasers as they can also be DPSS lasers.
 

Lagomorpha

Member
Joined
Nov 20, 2019
Messages
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Points
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I don't have any 301 lasers that use blue diodes. The greens are all DPSS 532nm lasers, much different from a direct diode laser like all the blue ones. That excludes any 473nm lasers as they can also be DPSS lasers.
Wow! I had no idea. Thanks a ton for the info.
 

Encap

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May 14, 2011
Messages
5,289
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You can't expect much from lasers that cost about the same a good cup of coffee approx $6 - $10 on eBay.
They are all, 301/303 series lasers, lowest cost/lowest end, minimal quality, mass produced Chinese units.
Some are focusable some are not.

If you want to try an excellent quality laser see either of the following:
https://www.jetlasers.org/index.php
and
https://www.sanwulasers.com/
 
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