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520 nm vs 532 nm laser who is better ?

Alaskan

Well-known member
Joined
Jan 29, 2014
Messages
12,967
Points
113
I need to research the application of a spacial filter acting as an expander, have not run across that info before, what is the downside? I imagine it must be filtering prior to collimation?
 



kecked

Active member
Joined
Jun 18, 2012
Messages
604
Points
43
Watch planters videos. Not my idea. The only thing I do is change the ratio of the lens to act as s telescope
 

hakzaw1

Well-known member
Joined
Apr 2, 2009
Messages
10,561
Points
113
AFAIK Most members avoid alibaba... they play very loose with the facts. Best choice is used from Vet members here at LPF or buy new from JL or Sanwu.
I am very happy with my (used) PL-E mini 1W
 




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