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Old 05-01-2012, 10:23 PM #17
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Default Re: A plea to users of coated optics (G1 and G2) lenses

Looks pretty simular! I'd be putting that lens in some Methanol or Ethanol and if you have it, put the lens into an ultrasonic cleaner. If the spots don't clear up, your lens is toast.
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Old 05-01-2012, 11:14 PM #18
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Default Re: A plea to users of coated optics (G1 and G2) lenses

What if you remove the fungus AND the coating ? As long the glass isn't contaminated it still hold the original shape. The dot will be pristine as new and there will be some loss in power.
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Old 05-02-2012, 12:07 AM #19
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Default Re: A plea to users of coated optics (G1 and G2) lenses

Fungus? Thats a new one on me. They are kept wrapped in a paper case inside a plastic bag within a steel cabinet. We also have HEPA 1900 filters on the air system. I indeed have now heard it all...
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Old 05-02-2012, 12:18 AM #20
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Default Re: A plea to users of coated optics (G1 and G2) lenses

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Fungus? Thats a new one on me. They are kept wrapped in a paper case inside a plastic bag within a steel cabinet. We also have HEPA 1900 filters on the air system. I indeed have now heard it all...
Sounds like some desiccant bags are in order
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Old 05-02-2012, 01:12 AM #21
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Default Re: A plea to users of coated optics (G1 and G2) lenses

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I indeed have now heard it all...
HA, hang around for a while. The priority of importance is only governed by the derangement of the irrelevant.
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Old 05-02-2012, 01:15 AM #22
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Default Re: A plea to users of coated optics (G1 and G2) lenses

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Your flare for redundancy is a flame we all circle with fated anticipation.
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The priority of importance is only governed by the derangement of the irrelevant.
Hey, those are pretty good. Maybe I should get a job writing fortune cookie messages.
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Old 05-02-2012, 03:02 AM #23
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Default Re: A plea to users of coated optics (G1 and G2) lenses

What is the coating on an A140 diode window made of?
Is this that mold?




Last edited by LaserCo; 05-02-2012 at 04:27 AM. Reason: to be made of or made of, this is the answer
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Old 05-02-2012, 03:38 AM #24
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Default Re: A plea to users of coated optics (G1 and G2) lenses

Looks like dust to me.

Now everyone is going to think every spot on the lens, or window is mold.
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Old 05-02-2012, 03:46 AM #25
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Default Re: A plea to users of coated optics (G1 and G2) lenses

You can clean that dust off with a blast of compressed air or need be , with some methanol..
diode windows are also coated as well. Just not with MgF2

BTW, Thanks for adding constructive comments to this thread T_J...

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Old 05-02-2012, 03:51 AM #26
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Default Re: A plea to users of coated optics (G1 and G2) lenses

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BTW, Thanks for adding constructive comments to this thread T_J...

Thats how I roll.

I find one good comment is worth more then the same comment repeated over an over again. Thats just spam.

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Old 05-02-2012, 04:20 AM #27
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Default Re: A plea to users of coated optics (G1 and G2) lenses

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Looks like dust to me.

Now everyone is going to think every spot on the lens, or window is mold.
Too true...
While it is possible that mold can damage a lens, there are (many) far more likely reasons for spots on your lens.
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Old 05-02-2012, 04:54 AM #28
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Default Re: A plea to users of coated optics (G1 and G2) lenses

Just relaying what NIKON had shared with me.
Shoot the messenger much?
T_j posting useful info from industry sources is
useful for all here, making snide comments is most certainly
spam. That we can both agree on?
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Old 05-02-2012, 05:08 AM #29
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Default Re: A plea to users of coated optics (G1 and G2) lenses

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You can clean that dust off with a blast of compressed air or need be , with some methanol..
diode windows as far as I know are not coated.

BTW, Thanks for adding constructive comments to this thread T_J...

Not AR coated in general? or with the coating which propagates the fungus?
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Old 05-02-2012, 05:22 AM #30
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Default Re: A plea to users of coated optics (G1 and G2) lenses

The concern is specifically the coated optics using MgF2.
Diode windows are NOT coated therefor not a concern.
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Old 05-02-2012, 05:25 AM #31
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Default Re: A plea to users of coated optics (G1 and G2) lenses

You have left me just as confused as before my question..


You're saying diode windows are not coated at all? or not coated with "MgF2."?
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Old 05-02-2012, 05:31 AM #32
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Default Re: A plea to users of coated optics (G1 and G2) lenses

Quote:
Originally Posted by JLSE View Post
You have left me just as confused as before my question..


You're saying diode windows are not coated at all? or not coated with "MgF2."?
Didn't understand your question.
No they (laser diodes) aren't AR coated at all
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