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Laser projector over 2.2km

Things

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So, being new years eve and all, I took my laser projector outside and got a few beamshots. There is a mountain roughly 2.2km away I use as my beamstop:



So, I set up a wireless router, which I had VNC running on my eeepc, and a VNC viewer on my phone. This was so I could turn the laser off while I wasn't taking pics, didn't want to attract too much attention to myself!

Anyway, no fog and a reasonably clear night, though humidity is around 50%.





Can actually see the dot on the mountain on this one:



THought I'd take the opportunity to check my far field alignment:



Hmmm, not bad over 2.2km I think! Also appears my dual 640nm red module has split again slightly, ahh well, easy to readjust!

Just goes to show, despite the horrible beam specs of the 445nm lasers, combined with 400mW 532 and 300mW 640nm the dot sizes match up pretty much perfectly! Blue overlaps a tiny bit close to the projector, but barely.

Cheers,
Dan
 
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Things

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Yea, I'll rewind time by about 2 minutes :D



Merry New Birthday! :D
 

borgqueenx

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Wow shiz, this is done by 1w of power?
How much is your 445nm?
Im glad you posted this:)
Now i know that i can make alot of beautiful beams tonight:)
 

Things

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The 445nm laser is 1W, and was running at full power in the pics. 400mW 543 and 300mW 640 in there also, but I measured about 1.4W total OTF (Under modulation).
 

ARG

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Wow! That alignment is incredible for 2.2km!

Great shots, you always take the best projector pictures!
 

LaserCo

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These are some great shots, and its very interesting seeing it over that map
I think I see palm trees, must be nice there.
 
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Things

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Yep, plenty of palm trees around here.

It's really quite unpleasant at the moment, hitting days of around 36C, and the high humidity is bring the apparent temp up to around 49C. Aircon is a must. Beautiful during winter though. Min winter temps are around 12C and around 19-24C during the day.
 

Elektrotechniker

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Yep, plenty of palm trees around here.

It's really quite unpleasant at the moment, hitting days of around 36C, and the high humidity is bring the apparent temp up to around 49C. Aircon is a must. Beautiful during winter though. Min winter temps are around 12C and around 19-24C during the day.
Dressing LIKE A BOSS during winter :crackup: :crackup:
Is the 543nm laser the laserwave one?
 

Things

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Aahahahaha oops, I meant 532nm!

But yes, it's a 400mW laser-wave module.
 




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