Old 11-08-2017, 05:51 PM #17
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Default Re: 4500mW Blue and 800mW Green at Bitlasers

Hi and sorry for disturbing hope someone here will can help me
I would bought soon a laser pointer 450 nm but I would ask you what difference between 1 000 mW or 5 000 mW
Does 5 000 mW will be more powerfull more light etc or does just time before battery are dead ?
Sorry I know my english is really bad but I'm french and looking to found people who know more about laser

because I would know if it's just time than battery can stay On I don't need to take expensive one with 50 or 75€ is enough but if highest mW is more powerfull will maybe need bought more expensive
Please could you help me with that and also need to know what kind of glasses are better and where bought good one to don't take risk. thanks
My email is

yohannflavier@gmail.com


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Old 11-08-2017, 06:06 PM #18
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Default Re: 4500mW Blue and 800mW Green at Bitlasers

Please go to the welcome section and introduce yourself first.
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Attention new brothers of the collimated light!

Newbie advice: Please take the time to first make an introduction in the Welcome section before posting questions: - https://laserpointerforums.com/f37


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

RHD's Relative Brightness vs Wavelength Calc: https://tinyurl.com/RHD-brightness

High Current Pulse Diode Drivers: https://tinyurl.com/ya7whuk3
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Old 11-08-2017, 06:48 PM #19
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Default Re: 4500mW Blue and 800mW Green at Bitlasers

Quote:
Originally Posted by flaview View Post
Hi and sorry for disturbing hope someone here will can help me
I would bought soon a laser pointer 450 nm but I would ask you what difference between 1 000 mW or 5 000 mW
Does 5 000 mW will be more powerfull more light etc or does just time before battery are dead ?
Please make a Welcome post in the Welcome sub-forum and include your location in your profile if you expect help or to get along with people on LPF

This thread has been dead for 1 year and 4 months--please do not necro-post to dead threads.

The company Bitlasers no longer sells hand held lasers see: https://laserpointerforums.com/f41/b...rs-100971.html

Quote:
Originally Posted by Alaskan View Post
Please go to the welcome section and introduce yourself first.
Exactly right-- another flood of new ones incoming, it seems.

Last edited by Encap; 11-08-2017 at 06:50 PM.
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