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Re: Competition #1 - Best Laser under $100
Thanks guys! I was trying to go the unique route, plus I haven't built in a few days too long
Comparing them is hard... I'll try..
638 vs 658 is like comparing the real red crayon or colored pencil, to the red violet one. It's not quite purple, but it's not quite red. Like a light blood red..following?
658 vs 685 is like that same red violet, to a pure dark red. Like a brighter version of what you see out of 808nm. It's a more visible version of that, I'd even say the same, just more visible. It's very tricky to explain past 658.. When you first see it, it's like you can, but your brain tells you you shouldn't. It's almost not there, but color-wise, it's a higher visibility 780/808nm.
Does that clear anything up? I recommend grabbing them on ebay, they're frequently there for 3 for $10. That's the easiest way, just don't drive them past 50mA! These are VERY picky diodes!
Thanks guys! I was trying to go the unique route, plus I haven't built in a few days too long
Comparing them is hard... I'll try..
638 vs 658 is like comparing the real red crayon or colored pencil, to the red violet one. It's not quite purple, but it's not quite red. Like a light blood red..following?
658 vs 685 is like that same red violet, to a pure dark red. Like a brighter version of what you see out of 808nm. It's a more visible version of that, I'd even say the same, just more visible. It's very tricky to explain past 658.. When you first see it, it's like you can, but your brain tells you you shouldn't. It's almost not there, but color-wise, it's a higher visibility 780/808nm.
Does that clear anything up? I recommend grabbing them on ebay, they're frequently there for 3 for $10. That's the easiest way, just don't drive them past 50mA! These are VERY picky diodes!
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