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Old 05-12-2016, 06:16 PM #1
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Hello everyone.


What filter (UV, ND4, CPL, ...) suitable for output galvos?


Best Regards.

Juanma.



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Old 05-12-2016, 07:40 PM #2
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Default Re: filter

Quote:
Originally Posted by juanma666 View Post
Hello everyone.


What filter (UV, ND4, CPL, ...) suitable for output galvos?


Best Regards.

Juanma.
Do you mean for the mirrors on the galvos?
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Old 05-12-2016, 07:47 PM #3
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Default Re: filter

Hi.

No, I mean the glass protecting the Galvos output.


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Old 05-12-2016, 07:52 PM #4
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Default Re: filter

Quote:
Originally Posted by juanma666 View Post
Hi.

No, I mean the glass protecting the Galvos output.

Ahh I see - what wavelength(s) are you using?
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405nm | Banggood LT-850 | "5mW" | Review Unit | Review WIP
445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
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532nm | Gearbest 303 Pointer | 50mW Metered
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633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
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Old 05-12-2016, 07:55 PM #5
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Default Re: filter

RGB

532nM
637nM
445nM
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Old 05-12-2016, 08:06 PM #6
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Default Re: filter

You can use regular glass to be honest ... you'll just lose a chunk of power 5-10% or so.

You can get AR coated glass here: Anti-Reflection (AR) Coated High Efficiency Windows

As far as I can see all of the windows on that page are broadband (425nm-700nm) AR (Anti-reflection) coated. Just need to pick a suitable size and double check the specifications to see if it meets your needs. Loss with AR coated glass is more like ~1%.

There are other sources - search around for AR coated glass. Maybe search on Photonlexicon - there have been threads about this before.
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405nm | Banggood LT-850 | "5mW" | Review Unit | Review WIP
445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
450nm | LaserPointerStore - Thor H2 | 1W(?) | Review Unit | >>Review<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | Review Unit | 3mW metered | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD-850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<

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Old 05-12-2016, 08:25 PM #7
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Default Re: filter

Thank you very much for your help.
Look for information in the Forum.


Best Regards.
Juanma.
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