Old 06-09-2015, 07:16 AM #1
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Default DL Laser Beam Expander New Generation

Hello,

Did anybody check DL Laser Beam Expander New Generation (link below), and can report?

http://www.dragonlasers.com/Laser-Be...ander-New.html

Is there any review about this product?



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Last edited by snoutke; 06-09-2015 at 07:18 AM.
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Old 06-09-2015, 07:48 AM #2
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Default Re: DL Laser Beam Expander New Generation

I believe no reviews on the expander but there are some pics and info around. Try using the search function.
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Old 06-09-2015, 02:48 PM #3
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Default Re: DL Laser Beam Expander New Generation

Ooh, neat, hadn't seen that. Don't think theres any info on LPF about them since they [appear to be] pretty new, and not many people do anything with beam expanders. Maybe you can be the first to review one
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Old 06-09-2015, 04:04 PM #4
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Default Re: DL Laser Beam Expander New Generation

It's only 2X, hardly much difference but perhaps worth it for a multimode laser diode to help reduce their terrible divergence some, but I prefer 5X for them as a minimum..
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Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions.


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'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

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Old 06-10-2015, 10:51 AM #5
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Default Re: DL Laser Beam Expander New Generation

This expander has been on their site for over a year. It is not that new (I have one) and there are threads here somewhere with some info on them. I made a thread and put pictures I know at least that much.
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Old 06-10-2015, 02:43 PM #6
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Default Re: DL Laser Beam Expander New Generation

^ true and I also own one. Don't understand why they didn't replace their 10x with another 10x as there was a long list with names on it for us to be notified when it was arriving. A few members here own the original 10x and one who has 2 of them but has 0 interest in selling one and I would feel the same way. Own a 2 and 5x.
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