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Old 06-11-2013, 10:30 PM #1
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Join Date: Aug 2010
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Exclamation New lenses for Hercules 10x beam expander.

Hi to all.
Here in Italy I have found a specialized company that build whatever lens in a very professional manner.
I have two Laserglow Hercules beam expanders: one for the Hercules (really? ), and another for the frankenstein blue build.
Since the lenses are 532 nm coated, they are not the best for 445 nm laser, so I will replace it with a new set with 445 nm coating. The frequency range for the Nichia NDB7875 diode is from 435 to 455 nm, so I know the correct parameters to create a new set of lenses right coated.
But since I need to replace also the 532 nm (scratched) lenses with other 532 nm lenses, I do not know the frequency range of the Hercules diode. I suppose that the frequency range of the DPSS green lasers are, more or less, the same. I know only that all the infrared frequencies above 808 nm must be eliminated, but I do not know all the other specs. Can anyone tell me which could be the correct coating for a 532 nm lens? It' enough a 522-542 range, and cut all the other frequencies?

Richard.


__________________
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Last edited by Minamoto Kobayashi; 06-11-2013 at 10:36 PM.
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