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445nm vs 532nm brightness comparison.

DJNY

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When I look directly at the pic I would say 532nm, but when I´m staring on another item near my notebook, without focusing your laser-pic, I notice 445nm much more.
 

RA_pierce

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Here is a quick and dirty photoshop edit of a photo I took to illustrate the camera's version of reality... above is the unedited photo, below is the edited version depicting how the beam appears to my eyes:


The output powers are 250mW 445nm and 130mW 532nm.
Air is "clean."
 

plexus

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Awesome, thanks ken! That is actually pretty close in terms of brightness. That is good to hear. I am attempting to build a 50-75mW 445 in a pen, and I was hoping it would still be pretty bright. Based on this, a 75mW 445 may be equivalent to a 40-50mW green. And a 50mW would be similar to a 30mW green. Which is actually still quite bright!
Except the sensitivity and colour balance of a CCD in a digital camera is not necessarily that of an eye. so comparing digital photos for the purpose of comparison to eye sensitivity is not accurate.
 

leukoplast

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Simply amazing pics Spartan! And the second pic, I would have been worried sick that the lasers might fall!

And interesting how much thicker the 445 beam appears to be compared to the green.
 

Traveller

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...interesting how much thicker the 445 beam appears to be compared to the green.
In general*, the 445nm emits a "bar-shaped" beam. Thus taken at different angles, the 445nm beam is likely to appear differently (different thicknesses).



*It's been said the Arctic uses lenses to "crop" the output to a more pleasant dot-like shape but with my 405-G-1 based laser, it is without a doubt a bar...
 

Bionic-Badger

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Here are a few examples of my Spartan 447nm 1Watt Laser and my new Wicked Lasers Photonic Disrupter Pro 532nm 100mW Laser.
Is it the white balance on your camera that makes it look like magenta rather than blue?
 

zxn474l

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Can a 445 diode be made to produce 2 watts pulsed for 2-3 seconds safely without burning up?
 

Cyparagon

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Except he rounds up from 1800mW or so, and a few people (Hemlock Mike?) have had their diodes die at 1.8A.
 




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