Old 11-08-2017, 07:55 PM #1
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Default Hello from France

Hi, My name is Yohann I'm 27 years old living in South of France (between Marseille and Toulon ) I'm new and would learn more about laser and this domain but nothing really correct in france. I just found your forums, so my english will not be perfect but I think it should be enough to let you understand me. thanks for this forum and hope everything will be ok



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Old 11-08-2017, 08:17 PM #2
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Default Re: Hello from France

Bonjour, bienvenue a LPF!

*Hello, welcome to LPF! *

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Old 11-08-2017, 08:20 PM #3
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Default Re: Hello from France

Welcome! Glad to have you.
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Old 11-08-2017, 08:26 PM #4
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Default Re: Hello from France

Thank you for the introduction! Welcome to LPF.
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Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be very roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

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Old 11-08-2017, 08:28 PM #5
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Default Re: Hello from France

Welcome and enjoy he forum. Good introduction.

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Old 11-08-2017, 08:30 PM #6
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Default Re: Hello from France

thanks everybody, will try to do my best to use good part of this forum for questions etc. thanks for this great forum ( it look like so many good informations "will just need to understand everything without missing point"
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Old 11-08-2017, 10:10 PM #7
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Default Re: Hello from France

Hi, And welcome to the forum nice intro we don't get to much of that around here but when we do we appreciate getting to know our members better. Enjoy and be safe ..

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Old 11-08-2017, 10:59 PM #8
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Default Re: Hello from France

Welcome to the Forum...
It would also be helpful if you put your
Global location in your Profile.

Enjoy your Stay.

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Old 11-08-2017, 11:08 PM #9
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Default Re: Hello from France

welcome to the forum and as of the your question about the mw of the lasers its the optical power output of the laser it has nothing to do with the batteries and also its not related to the visibility of a laser.
a small paradigm
a green diode 520nm needs around 2A to make 1000mw of output but a 450nm only needs 1.4A to produce 2000mw output, in that case the 450nm diode will have more power in burning but the other one will be more visible to our eyes(due to close wavelengh to 555nm that our eyes are the most sensitive).the current that needs each diode has only to do with the efficiency so you can't messure the batteries draining from the mwts of a laser

hope to explained well
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Old 11-09-2017, 05:30 PM #10
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Default Re: Hello from France

Welcome enjoy and be safe.
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Old 11-09-2017, 10:39 PM #11
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Welcome!
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