Old 12-13-2016, 12:28 AM #1
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Default Anyone ever used 577nm?

Considering that CNI is now producing 577nm lasers, I can't help but wonder about this WL, even though I recognize that it's fairly unlikely that we'll ever get them.

How does it look? Is this more of a true yellow as compared to 588.6? Or is this a greenish, chartreuse type of yellow? I'd love to have a TRUE yellow laser, and this seems as though it might be an option. I just don't want a laser that's super green yellow like a 561 lol

Thoughts?


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Old 12-13-2016, 12:51 AM #2
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Default Re: Anyone ever used 577nm?

I haven't used a 577 before, but I can say that 583.8 is very, very close to a true yellow. True yellow is probably somewhere around 581-582nm based on the multiline output of my Spartan (the lowest yellow is ever so slightly on the green side, and 583.8 is just ever so slightly gold.)
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Old 12-13-2016, 07:51 AM #3
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Default Re: Anyone ever used 577nm?

True yellow is around 580 +/- 2 nm depending on personal colour perception. As Sta's is 3.8nm away and still looks very yellow with a gold tinge, then so will 3nm the other way with the slightest lime tinge to it. It will be far more yellow than a 561nm. Go for it, it won't cost too much.
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Old 12-13-2016, 02:08 PM #4
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Default Re: Anyone ever used 577nm?

Quote:
Originally Posted by Chicxulub View Post
Considering that CNI is now producing 577nm lasers, I can't help but wonder about this WL, even though I recognize that it's fairly unlikely that we'll ever get them.

How does it look? Is this more of a true yellow as compared to 588.6? Or is this a greenish, chartreuse type of yellow? I'd love to have a TRUE yellow laser, and this seems as though it might be an option. I just don't want a laser that's super green yellow like a 561 lol

Thoughts?
It would appear to be a true yellow. The wavelength of 561nm light would appear this color. I'm revising what I wrote. After some little searching yellow would fall somewhere between 570nm-577nm.

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Old 12-13-2016, 02:12 PM #5
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Default Re: Anyone ever used 577nm?

The colour of light on the mans face is 577nm.

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Old 12-13-2016, 02:21 PM #6
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Default Re: Anyone ever used 577nm?

I've seen 578nm - it's a very light golden yellow.
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Old 12-13-2016, 02:25 PM #7
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Default Re: Anyone ever used 577nm?

Remember, we can describe the colour as much as we like, but all of our eyes perceive the colour differently. The only real way, is to see for yourself in person.
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Old 12-13-2016, 02:32 PM #8
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Default Re: Anyone ever used 577nm?

Quote:
Originally Posted by CurtisOliver View Post
Remember, we can describe the colour as much as we like, but all of our eyes perceive the colour differently. The only real way, is to see for yourself in person.
Not to mention monitor color accuracy!
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Old 12-13-2016, 02:34 PM #9
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Default Re: Anyone ever used 577nm?

Yes, that is another factor to consider. Someone might display R 255 G 255 B 0 on one screen, but to another it may look like R 250 G 255 B 0 etc. Also what with difference in perception may end to a difference of 2-3 nm.
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Last edited by CurtisOliver; 12-13-2016 at 02:37 PM.
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Old 12-13-2016, 11:00 PM #10
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Default Re: Anyone ever used 577nm?

It's literally the color of an slightly unripe lemon. If You see it in a really high power, it's a really nice yellow color. I'd say about 585 is a nice yellow for me. 588.6 is a kind of a goldenrod color, and 594 is starting to turn orange/amber, but still pretty yellow. In contrast, 568 and 561 are more chartreuse- about the color of a yellow green Crayon
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Old 12-14-2016, 04:20 AM #11
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Default Re: Anyone ever used 577nm?

Quote:
Originally Posted by CurtisOliver View Post
Remember, we can describe the colour as much as we like, but all of our eyes perceive the colour differently. The only real way, is to see for yourself in person.
Exactly, no two sets of eyes are exactly the same, nor is what different brains do with the signal from the eyes exactly the same---close enough for generalized communication and consensus for that purpose but not exactly the same.

Color is not a physical property; it is merely the brain’s interpretation of different wavelengths of light. Color names are words/symbols for that brain activity.

A fundamental problem in cognitive science is how humans categorize the visible color spectrum. As different societies developed names for colors, across the globe, isolated cultures went about naming the colors, but researchers have found they all generally did it in the same order. Called the hierarchy of color names, the order was generally (with a few exceptions): black, white, red, green, yellow, and blue with others like brown, purple and pink coming at various times afterward.

"Recent research in this area has demonstrated that this hierarchy matches humans reaction to different frequencies in the visible spectrum; that is, the stronger our reaction to that color’s frequency, the earlier it was named in the culture" See: On the origin of the hierarchy of color names

Last edited by Encap; 12-14-2016 at 08:49 PM.
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