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08-23-2015, 06:31 AM #17
 Class 3B Laser Join Date: Jan 2014 Location: Near Mosul, Iraq Posts: 4,249 Rep Power: 2087
Class 3B Laser

Join Date: Jan 2014
Location: Near Mosul, Iraq
Posts: 4,249
Rep Power: 2087

If I could afford to buy, or even find, the kind of lasers I want, I might do so, but so far, no one makes the ultra low divergence laser pointers I want to own.

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http://www.lexellaser.com/techinfo_wavelengths.htm

Laser Safety:
http://www.laserpointersafety.com/index.html

Angular Size Calculator; use with diode angle of radiation specification to calculate the needed lens diameter for a given FL:
http://www.1728.org/angsize.htm

Divergence to spot size calculator: http://tinyurl.com/spotsize - 1 mRad is about .057 degrees which from the earth would expand to be ~10% the diameters of the moon or sun at their distances.

Divergence Calculator: http://www.pseudonomen.com/lasers/ca...alculator.html - Measure your lasers beamwidth at 1 foot & then at a further distance to calculate the divergence.

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

Laser Power Density Calculator: http://www.ophiropt.com/laser-measur...ity-calculator

How to build a laser beam expander to reduce divergence: http://tinyurl.com/BeamExpander

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

YAG Power Calculator, i.e. convert ns @ mJ to peak power in watts http://tinyurl.com/YAG-Pulse

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

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08-23-2015, 06:28 PM #18
 Banned Join Date: Aug 2015 Location: Eastern Coast, USA Posts: 115 Rep Power: 0
Blastertron221
Banned

Join Date: Aug 2015
Location: Eastern Coast, USA
Posts: 115
Rep Power: 0

Some people buy to learn and not need to fail, but it is true the best built lasers are not shipped to the US, and more countries, so I recommend building. Its more educational, fun, and possible.

Last edited by Blastertron221; 08-23-2015 at 06:30 PM. Reason: Got Mixed Up.

08-23-2015, 06:44 PM #19
 Class 3R Laser Join Date: Dec 2014 Location: N.J. USA ⚡️⚡️ Posts: 2,046 Rep Power: 1428
Class 3R Laser

Join Date: Dec 2014
Location: N.J. USA ⚡️⚡️
Posts: 2,046
Rep Power: 1428

Yes i agree well thats how we learn sometimes by failing. Failing is a lesson the be learned take a look at Mr. Edison he failed countless number of times now we all enjoy electricity.
Im not saying that were all inventors but in reality look at some of the awesome builds in this forum that folks have achieved. Lessons to be learned and earned.

Rich

08-23-2015, 07:32 PM #20
 Class 3B Laser Join Date: May 2013 Location: Snohomish County Washington, US Posts: 3,800 Rep Power: 1086
Pi R Squared
Class 3B Laser

Join Date: May 2013
Location: Snohomish County Washington, US
Posts: 3,800
Rep Power: 1086

Quote:
 Originally Posted by Shadowsix For me building them is the only way to go! Yea I bought a few in the beginning but I really came to enjoy building them and I totally agree with Alan, if you build it yourself you know the quality that went in to it and you know best how to repair it if it should suddenly stop working.
Those of you who are Star Trek fans should have a look at what Shadowsix has done. These are a perfect example of why to build your own, they are lasers you can't buy or have built for you:

My Star Trek Next Generation Phaser Red Mod

My Star Trek Original Series Pilot Capt. Pike's Laser Red Mod

HELP! Best way to remove these screw plugs? *NEW UPDATE* It's a mix!

My Klingon Disruptor Green Mod

**Update**My Federation Phaser mods carry case: New improved! **New Photos**

Klingon D7 Battlecruiser "Klothos" with three lasers & running lights (pic heavy)

For custom builds they are without precedent, models of perfection that there are no words to describe, classic moments in the history of LPF and custom laser builds.

Quote:
 Originally Posted by Blastertron221 Some people buy to learn and not need to fail, but it is true the best built lasers are not shipped to the US, and more countries, so I recommend building. Its more educational, fun, and possible.
The increasing import restrictions are certainly a problem, health Canada also has import restrictions, and of course Australia is the worst of all.

Quote:
 Originally Posted by Lifetime17 Yes i agree well thats how we learn sometimes by failing. Failing is a lesson the be learned take a look at Mr. Edison he failed countless number of times now we all enjoy electricity. Im not saying that were all inventors but in reality look at some of the awesome builds in this forum that folks have achieved. Lessons to be learned and earned. Rich
I have little doubt that if you put together the smartest members here and gave them \$20 billion dollars, they could put a man on the moon, and if you gave them another \$20 billion dollars they could probably also return him safely to the earth.

Alan
__________________
Keychain 650nm <5mW
Quartet 4-in-1 630-680nm <1mW

AtlasNova 635nm <5mW
MillionAccessories 532nm <5mW broken
M462 462nm one of a kind (in progress)
PLTB450B 450nm 1913mW G2 lens
PL520 520nm 82mW acrylic lens
S06J 12X 405nm 590mW G2 lens
C6 M140 445nm 1.5W 3 element lens
9mm 445nm with G2 lens in a stainless steel host
Radiant Electronics X4 3.7W Laser Power Meter

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The light that shines twice as bright burns half as long.

08-23-2015, 07:56 PM #21
 Class 3R Laser Join Date: Apr 2015 Location: Fall river MA Posts: 1,452 Rep Power: 1255
GSS
Class 3R Laser

Join Date: Apr 2015
Location: Fall river MA
Posts: 1,452
Rep Power: 1255

Of course I jumped on this post! Thanks Pi, Shadowsix an I actually PMed each other for the first time a few days ago Hes a great guy willing to help in any way!

08-23-2015, 09:24 PM #22
 Class 3R Laser Join Date: Dec 2014 Location: N.J. USA ⚡️⚡️ Posts: 2,046 Rep Power: 1428
Class 3R Laser

Join Date: Dec 2014
Location: N.J. USA ⚡️⚡️
Posts: 2,046
Rep Power: 1428

PI your to funny i still have to congratulate all the fine folks here for trying. Even if they don't get to the moon Pal lol..

Rich..

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