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ArcticMyst Security by Avery
More Purple Than Blue
- Thread starter busterhax
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it IS more purple than it is blue, if you have an argon or 473 the difference is even more noticeable.
DrSid
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For me it's totally blue. It kinda glows in violet, but the dot itself has not a hint of purple.
DTR
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It seems to be different from person to person. It looks blue to me as well.
Grix
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I think it's blue. But I also think blu-ray is blue even though most people see it as violet.
lazeerer
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I see it as Blue with the out side of the beam slightly Violet but not much almost unnoticeable. But the dot is blue to my eyes.
RoDnSuE
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I see 405nm as a light violet color.
The odd thing I'm still trying to figure out is why a 405nm dot, looks like a spiders web from a distance but when viewed from a couple of feet away, (with the laser firing from 10+ feet away), it looks like a dot again.
Strange effect.
The odd thing I'm still trying to figure out is why a 405nm dot, looks like a spiders web from a distance but when viewed from a couple of feet away, (with the laser firing from 10+ feet away), it looks like a dot again.
Strange effect.
Meatball
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If you've seen 430nm, it is the most PURPLE color that you will see. It is only 15nm away from 445.
DrSid
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I have this problem with blues too .. I just can't focus on them well. It even works for me with blue (0,0,255) font color on black background. It's pretty hard to read.
IMHO it's because rods or not sensitive to blue .. so you see blues only with cone cells. And those are pretty sparse, especially the blue ones.
I remember once I worked with spectrograph in school lab .. and we measured sunlight spectrum. You could look inside to see any wavelength you set it too .. and on the 'fast side' of the rainbow, I could not see purple as far as I could go. Pretty strange color, but definitely blue. I totally did not understand why they say 'ultraviolet' .. when it's ultrablue in my eyes !
But it seem to differ for some people.
IMHO it's because rods or not sensitive to blue .. so you see blues only with cone cells. And those are pretty sparse, especially the blue ones.
I remember once I worked with spectrograph in school lab .. and we measured sunlight spectrum. You could look inside to see any wavelength you set it too .. and on the 'fast side' of the rainbow, I could not see purple as far as I could go. Pretty strange color, but definitely blue. I totally did not understand why they say 'ultraviolet' .. when it's ultrablue in my eyes !
But it seem to differ for some people.
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Meatball
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Lol can you see 405 at all??
RoDnSuE
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The only colors of laser I've seen 1st hand are 652nm(red), 532nm(green),
and 405nm(violet??).
405 is the only one (so far) that has this strange visual effect for me.
and 405nm(violet??).
405 is the only one (so far) that has this strange visual effect for me.
millirad
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I notice more blue than violet, so it makes sense that others see more violet than blue. If some people are color-blind to certain colors then there must also be differences in perception for different wavelengths. Even the pics that I have seen can be either violet or blue and some are of course white, due to over-saturation.
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Rafa
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Seems blue to me, both beam and dot.
I love these diodes.
I love these diodes.
Benm
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Compared to 473 it is a bit purple... but looking at the beam and dot i'd call 445 blue - and a big leap from near-invisible 405 nm at that!
oic0
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Look almost the same color blue as the LEDs used in computer case lighting, mice, keyboards etc... (I have his and her desktops on one big desk, both have blue LEDs in the keyboards, mice, and cases. All look like 445 to me).
445nm is a violet blue, 473nm is nearing a greenish blue but not as green-blue as 488nm argon lines. Somewhere around 460nm would probably be a more true looking blue colour.
As for why 405nm seems fuzzy, it's because the human eye can't focus on it properly. In fact our lens focuses the light slightly infront of our retina and not on it. When we combine that with the positive and negative interferance areas created at the laser beams point of impact (what creates that speckled effect in the laser lights reflections), we get a very strange fuzzy blurr of a dot form a distance.
As for why 405nm seems fuzzy, it's because the human eye can't focus on it properly. In fact our lens focuses the light slightly infront of our retina and not on it. When we combine that with the positive and negative interferance areas created at the laser beams point of impact (what creates that speckled effect in the laser lights reflections), we get a very strange fuzzy blurr of a dot form a distance.
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