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Old 10-06-2012, 10:44 PM #1
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Default question

Hello friends.

Beginner's question.

What beam is more divergence 445 or 470nm?



Best Regards.


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Old 10-06-2012, 10:56 PM #2
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Default Re: question

Divergence doesn't depend from wavelength!
It depends from the type of diode that is being used!

Jim
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Last edited by jimdt7; 10-06-2012 at 10:56 PM.
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Old 10-06-2012, 11:07 PM #3
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Default Re: question

Thank You, Jim.

I want to know divergence of this diode, but it doesn't specify it.

http://www.ebay.es/itm/470nm-200mw-B...ht_1458wt_1160

I have this 445nm that he/she has enough divergence...

http://www.ebay.es/itm/800mw-445nm-B...ht_1822wt_1160


I want to compare them, for a possible substitution.




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Old 10-06-2012, 11:08 PM #4
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Default Re: question

Thank You, Jim.

I want to know divergence of this diode, but it doesn't specify it.

http://www.ebay.es/itm/470nm-200mw-B...ht_1458wt_1160

I have this 445nm that he/she has enough divergence...

http://www.ebay.es/itm/800mw-445nm-B...ht_1822wt_1160


I want to compare them, for a possible substitution.




Best Regards.

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Old 10-06-2012, 11:10 PM #5
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Default Re: question

Since it doesn't specify the model of the diode that is being used in the module, i can't tell you the divergence!
You should ask the seller of the modules!

Jim
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Old 10-06-2012, 11:11 PM #6
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Default Re: question

Sorry.

I have duplicated the answer.
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Old 10-07-2012, 06:06 AM #7
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Default Re: question

Ask the seller for more information.

Typically though, 445nm lasers are diode based, where as 470nm are dpss. The DPSS modules are usually able to produce much better divergence.
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Old 10-07-2012, 06:45 AM #8
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Default Re: question

Yea it looks like he is not being honest about the wavelength. That is a module designed to hold a diode for one as I have a few of them sitting here. The picture shows the how thick the beam is and the color looks 445 to me. Plus I doubt you are going to get a 200mW 470nm for $79.

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