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Old 06-29-2010, 09:02 AM #1
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Default Mixing 445nm and 650nm

What color do I get when I mix these two wavelengths? How big is the color difference between the 405nm&650nm magenta mix?


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405nm >> Wickedlasers SONAR by lazeerer peak@968mW
445nm >> Kryton Smooth by lazeerer peak@2075mW
453nm >> Lipstick by rhd peak@158mW
473nm >> Optotronics RPL-B peak@112mW
515nm >> Skylasers HL peak@41mW
532nm >> Novalasers Alpha HP peak@284mW
589nm >> CNI PGL-III-A peak@89mW
594nm >> Laserglow Rigel peak@4mW
635nm >> MXDL by DTR peak@38mW
642nm >> Saillaser peak@23mW
660nm >> CR2 by lazeerer peak@524mW
685nm >> MXDL by lazereer peak@42mW

Above lasers measured with an Ophir nospin LPM


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Old 06-29-2010, 01:05 PM #2
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Default Re: Mixing 445nm and 650nm

I have tried to mix 405nm and 650nm and I got magneta color. But it was just pointing two lasers at the same place.
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Sorry for my English, it's not my original language
I Own:
Homemade LPC-815 with a BIG heatsink - 250 mW 650 nm
DX 20 mW 532 nm
Homemade pulsed laser with SSY-1 head - about 1 megawatt 1064nm

Going to make:
1W 445nm high power lab style blue laser
100mW 405nm PHR-803T flashlight style violet laser
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THIS IS KIND OF COOL
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Old 06-29-2010, 01:11 PM #3
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Default Re: Mixing 445nm and 650nm

I suppose it will also depend on the power settings of each laser
as well...

Jerry
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Old 06-29-2010, 01:17 PM #4
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Default Re: Mixing 445nm and 650nm

Of course, but what spectrum I can get?

Anyone around who is able to build a 445nm&532nm cyan laser or do I should I have to go for an Argon?
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405nm >> Wickedlasers SONAR by lazeerer peak@968mW
445nm >> Kryton Smooth by lazeerer peak@2075mW
453nm >> Lipstick by rhd peak@158mW
473nm >> Optotronics RPL-B peak@112mW
515nm >> Skylasers HL peak@41mW
532nm >> Novalasers Alpha HP peak@284mW
589nm >> CNI PGL-III-A peak@89mW
594nm >> Laserglow Rigel peak@4mW
635nm >> MXDL by DTR peak@38mW
642nm >> Saillaser peak@23mW
660nm >> CR2 by lazeerer peak@524mW
685nm >> MXDL by lazereer peak@42mW

Above lasers measured with an Ophir nospin LPM


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Old 06-29-2010, 01:54 PM #5
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Default Re: Mixing 445nm and 650nm

Would it work like if you were mixing paints?
What do you get if you mix red and violet paint?
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Old 06-29-2010, 02:08 PM #6
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Default Re: Mixing 445nm and 650nm

light is a little different from paints, as the sum off Red Green and Blue = white, whereas in paints, in the right values/saturations, should equal black.

it is not hard to dial in a ton of colors through analog modulation of 445nm 650nm and 532nm that are sitting in my white fusion, and i look forward to the IC control on FML's white fusion driver.

depending on the power of the two separate wavelengths, whether it be blue+red or red+green, you, or someone else, can attain what you are wanting.

445 = teh sauce for color mixing. seriously.
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Old 07-02-2010, 09:00 PM #7
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Default Re: Mixing 445nm and 650nm

I do this sort of thing by shining them into one side of an opaque white globe lamp and noting the mixed color on the other side.

With my ~200mW (estimated) 445nm blue and a 256mW IgorT red build, I get a nice even magenta color. When I combine the 650nm with an IgorT 360mW bluray, what I get is more akin to a hot pink. The pink appears more saturated to my eye than the magenta, but without varying the power ratios I don't know how useful that observation is.

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Old 07-02-2010, 09:17 PM #8
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Default Re: Mixing 445nm and 650nm

Quote:
Originally Posted by DJNY View Post
Of course, but what spectrum I can get?

Anyone around who is able to build a 445nm&532nm cyan laser or do I should I have to go for an Argon?
By "Spectrum" I take it you mean gamut? If so, you can approximate your gamut by using a CIE color diagram.

Find the laser wavelength of your primaries on the outside of the curve and mark them, and then draw straight lines between them. That is the gamut, the range of hues that is possible with those primaries. Two primaries yield a line segment; three yield a triangle.

As you can see, 445nm gives you a wider gamut than would 473 nm; the latter misses rendering the deepest blues and violets. Also, 515nm would be the best option for green (and I understand that's the wavelength being pursued for laser projection use), but for the moment we only have 532nm, which loses us a small area of the most saturated emeralds and cyans.

Nevertheless, a 650/532/445 combo is a great gamut, significantly wider than the regular sRGB one.
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