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Are the yellow lasers..really yellow?
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leukoplast
Wicked Lasers God

Joined: 05 Dec 2006
Posts: 2272
Picture(s): 12
Location: California

Posted: 12/30/06, 4:13 PM Post subject: Are the ye

From all the pics Ive seen of yellow lasers, scroll down to see some of them, the beams and dots all look orange? Is this a trick with the camera, or does it really look yellow? Cause if its really yellow, then I will probably pick on up for about 299$ but if its just orange...then I dont think its worth it. And just so you know, If I decide to get one, it will be from WickedLasers and is a 593.5nm. Which really may be orange, but advertised as yellow Now this is the yellow color I want! _________________ 125mW Fusion - Divergence- 1.0 mRad \| TEM00-TEM01* Doughnut mode \| 119mW peak, 103 Nominal 55mW CNI - Laserchecked at 65mw peak, 55mw nominal \| Divg -2.18 mRad \|MIA! Lost!! FOUND! 15mW Evolution - 100mW Peak, 85mW Nominal(Holds +/- 5% over 2min) \| Divg 1.0mRad Has semi-adjustable power setting by tweaking battery cap: <5mW - Peak power. Chromed P125 Pulsar - 152mW peak, 135mW nominal: - Divg - Rechecked, and refocused. Now at 0.05mRad...Yes, 0.05!! 5.08mm at 73 feet: 4mm at app 400 Watt Fogger - Great fogger! Pumps out a lot! Fills room easily. Listen to one of my songs - \|Space Continuum.mp3\| \|Site\| \|Liquefied Light.mp3\|

pseudonomen137
Wicked Lasers God

Joined: 17 Mar 2006
Posts: 3680
Picture(s): 1

Posted: 12/30/06, 4:18 PM Post subject:

I've said before many times that I personally feel its more orange. Normally if you don't tell someone what it is, and ask them they'd say orange. However if you know its supposed to look yellow, it just ends up kinda looking yellow. IMO orange-yellow would be the best name for the color. And BTW, if you are planning on getting one from WickedLasers, you might want to give me a PM first.

leukoplast
Wicked Lasers God

Joined: 05 Dec 2006
Posts: 2272
Picture(s): 12
Location: California

Posted: 12/30/06, 4:44 PM Post subject:

Done and done. I actually Pmed you before you posted here. (sorry if there is repeat questions in there) Technically I should have read the other thread here entirely, since you do answer my questions exactly. Mods, delete as necessary. _________________ 125mW Fusion - Divergence- 1.0 mRad \| TEM00-TEM01* Doughnut mode \| 119mW peak, 103 Nominal 55mW CNI - Laserchecked at 65mw peak, 55mw nominal \| Divg -2.18 mRad \|MIA! Lost!! FOUND! 15mW Evolution - 100mW Peak, 85mW Nominal(Holds +/- 5% over 2min) \| Divg 1.0mRad Has semi-adjustable power setting by tweaking battery cap: <5mW - Peak power. Chromed P125 Pulsar - 152mW peak, 135mW nominal: - Divg - Rechecked, and refocused. Now at 0.05mRad...Yes, 0.05!! 5.08mm at 73 feet: 4mm at app 400 Watt Fogger - Great fogger! Pumps out a lot! Fills room easily. Listen to one of my songs - \|Space Continuum.mp3\| \|Site\| \|Liquefied Light.mp3\|

Ragnarok
Fusion Laser

Joined: 12 Nov 2006
Posts: 481
Picture(s): 6
Location: Hell, aka Bakersfield, California

Posted: 12/30/06, 8:37 PM Post subject:

Beware of how film/digital cameras "interpret" certain colors. I have a yelllow HeNe (594nm) and I would not call it orange. It does not look nearly as orange as the laser in the photograph. To me 594nm is closer to yellow than orange. Perhaps the most accurate description of that particular wavelength would be amber, gold, or "sodium yellow", as the color is very close to that of a low-pressure sodium lamp, or burning sodium metal (589nm). _________________ \"Man, that thing is WAY too bright!!\" \"Yeah...and your point is...?\"

pseudonomen137
Wicked Lasers God

Joined: 17 Mar 2006
Posts: 3680
Picture(s): 1

Posted: 12/30/06, 10:08 PM Post subject:

Yeah, I kinda skimmed the pics the first time over, but after Ragnarok's post I looked again. I still feel that the 593.5nms are more of a yellow-orange, but nothing like those pics. Those pics are orange if not red. To me, this particular pic portrays the color pretty realistically, or maybe just slightly more orange than in real life:

Ragnarok
Fusion Laser

Joined: 12 Nov 2006
Posts: 481
Picture(s): 6
Location: Hell, aka Bakersfield, California

Posted: 12/31/06, 1:59 AM Post subject:

pseudonomen137 wrote:

To me, this particular pic portrays the color pretty realistically, or maybe just slightly more orange than in real life:

I agree, and especially with the last half of the above sentence. That picture is closer to the truth than the earlier ones.

A solution of salt (sodium chloride) fed with a wick into a propane torch or bunsen flame is a quick and easy way, for anyone who may be interested, to get a real good idea of the color of the 594 laser since it's only 5nm away from the sodium D lines.
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pseudonomen137
Wicked Lasers God

Joined: 17 Mar 2006
Posts: 3680
Picture(s): 1

Posted: 12/31/06, 2:14 AM Post subject:

BTW, ragnarok, you might be surprised how much 5nm can mean. Argon and 473nm are just 15nm away, and yet they seem to me to be a HUGE difference. Even that 5nm might easily mean the difference between orange-yellow and yellow-orange or more.

Ragnarok
Fusion Laser

Joined: 12 Nov 2006
Posts: 481
Picture(s): 6
Location: Hell, aka Bakersfield, California

Posted: 12/31/06, 2:35 PM Post subject:

Yes, I am aware that 5nm can make a difference in perceived color, and you are right about the surprising difference between 473nm and 488nm colors, but you have to be careful in generalizing this kind of comparison to other spectral regions, because perceived color shift per nm changes most rapidly in the blue-green region. For example, perceived color shifts between 480nm and 490nm are roughly twice what they are between 470nm and 480nm, and 580nm and 590nm. A 40nm shift from 480 to 520 represents a complete change from blue to green, yet the same 40nm shift from 630 to 670 represents only different shades of red. For practical purposes the sodium D lines are close enough to HeNe amber - I've decided not to call it yellow - and are easily reproducible by anyone with a minimum of effort and material if they want to get an idea of the color of the 594nm laser. _________________ \"Man, that thing is WAY too bright!!\" \"Yeah...and your point is...?\"

leukoplast
Wicked Lasers God

Joined: 05 Dec 2006
Posts: 2272
Picture(s): 12
Location: California

Posted: 12/31/06, 2:53 PM Post subject:

pseudonomen137 wrote:

BTW, ragnarok, you might be surprised how much 5nm can mean. Argon and 473nm are just 15nm away, and yet they seem to me to be a HUGE difference. Even that 5nm might easily mean the difference between orange-yellow and yellow-orange or more.

You know what would be neat to find, is a nm color chart. where you enter in a specific wavelength and it will show you the exact color that wavelength represents.

I am searching google..but am having trouble finding anything.
_________________
125mW Fusion - Divergence- 1.0 mRad | TEM00-TEM01* Doughnut mode | 119mW peak, 103 Nominal
55mW CNI - Laserchecked at 65mw peak, 55mw nominal | Divg -2.18 mRad |MIA! Lost!! FOUND!
15mW Evolution - 100mW Peak, 85mW Nominal(Holds +/- 5% over 2min) | Divg 1.0mRad
Has semi-adjustable power setting by tweaking battery cap: <5mW - Peak power.
Chromed P125 Pulsar - 152mW peak, 135mW nominal:
- Divg - Rechecked, and refocused. Now at 0.05mRad...Yes, 0.05!! 5.08mm at 73 feet: 4mm at app
400 Watt Fogger - Great fogger! Pumps out a lot! Fills room easily.
Listen to one of my songs - |Space Continuum.mp3| |Site| |Liquefied Light.mp3|

aliencam
Wicked Lasers Master

Joined: 03 Nov 2006
Posts: 769
Picture(s): 89
Movie(s): 6
Location: Tempe, AZ

Posted: 12/31/06, 7:03 PM Post subject:

what i've done is just go to google images, and just type in "*** nm" and usually there is a picture of something that colour. _________________ http://blog.aliencam.net Powerball: LH-13,303 RH-13,341 not working well Cracked Lens Broken

pseudonomen137
Wicked Lasers God

Joined: 17 Mar 2006
Posts: 3680
Picture(s): 1

Posted: 12/31/06, 7:52 PM Post subject:

The main issue is capturing the color correctly with a camera. However another problem is that while each monitor tries to simulate it, our monitors will all be different, and they cannot particularly create each wavelength on command. Unfortunately the only way to really tell is to see it for yourself.

Vic
Wicked Lasers God

Joined: 30 Oct 2006
Posts: 2005
Picture(s): 66
Movie(s): 3
Location: United States, CA, Los Angeles

Posted: 12/31/06, 7:53 PM Post subject:

aliencam wrote:

what i've done is just go to google images, and just type in "*** nm" and usually there is a picture of something that colour.

Nice Idea, if anyone has some programing languages, try searching for all the colors, and makeing a software of it.
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pseudonomen137
Wicked Lasers God

Joined: 17 Mar 2006
Posts: 3680
Picture(s): 1

Posted: 12/31/06, 7:55 PM Post subject:

Vic wrote:

aliencam wrote:

what i've done is just go to google images, and just type in "*** nm" and usually there is a picture of something that colour.

Nice Idea, if anyone has some programing languages, try searching for all the colors, and makeing a software of it.

Please see my post above. That will explain why that is not possible.

Olozhika
Wicked Lasers God

Joined: 20 Aug 2006
Posts: 1497
Picture(s): 196
Movie(s): 6
Location: United Kingdom

Posted: 12/31/06, 8:22 PM Post subject:

pseudonomen137 wrote:

The main issue is capturing the color correctly with a camera. However another problem is that while each monitor tries to simulate it, our monitors will all be different, and they cannot particularly create each wavelength on command. Unfortunately the only way to really tell is to see it for yourself.

You are quite right when you say that Pseudonomen137, all monitors display colors differently, just as an example change your color settings on yoru monitors from Normal to Warm, completely different.
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Ragnarok
Fusion Laser

Joined: 12 Nov 2006
Posts: 481
Picture(s): 6
Location: Hell, aka Bakersfield, California

Posted: 12/31/06, 8:25 PM Post subject:

pseudonomen137 wrote:

However another problem is that while each monitor tries to simulate it, our monitors will all be different, and they cannot particularly create each wavelength on command. Unfortunately the only way to really tell is to see it for yourself.

Pay close attention all, to what pseudonomen137 said. I could not have said it better, and I think it is it is important to expand on why this is so.

Here is the CIE chromaticity diagram, and the same with the "color gamut" for a Trinitron monitor marked out on it. The three points of the triangle represent the colors of the three phosphors - red, green, and blue - that are used to create all the colors the monitor can make, which fall inside the triangle.

Notice how far from pure these three "primary" colors are - the edge of the diagram represents actual pure wavelengths. Lasers, because of their extremely narrow spectral width (monochromaticity) are the only light sources that fall on the edge of the diagram.

It is easy to see just how difficult is is to produce certain colors the way they are in real life.
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