6 Color Beam Shots!

Great shots RA!

kingdave2357 said:

IDK if its just me or not, but in person 445nm seems almost violet, I mean it definitely looks blue, but with a violet tint to it, and when you light up the room it has the same kind of 'haze' that my violets do, just brighter, my 473nm doesnt do that, its more of a clean color, like a green.
And 473nm looks almost teal while next to 445nm. IDK, I prefer 473nm.....



Also it is possible for the diodes to shift wavelengths from excess heat....

Click to expand...

That is exactly my observation.
The spot looks blue but the beam looks close to violet, along with the scatter from reflections. I call it "indigo." It's between blue and violet.

Also, maybe it's just me, but although my 473 rivals my 130mW 532 pen in brightness, the 473 seems like a "softer" color, much like red. It's easy on the eyes, and not "intense" like 445 or 532.

kingdave2357 said:

IDK if its just me or not, but in person 445nm seems almost violet, I mean it definitely looks blue, but with a violet tint to it, and when you light up the room it has the same kind of 'haze' that my violets do, just brighter...

Click to expand...

+1. I had the diode in my 405nm Kryton replaced with a 445nm, so I cant judge the two side by side at the moment, but the first time I turned it on, I could swear it was still 405nm. Im sure it looks different side by side, but 455nm is definitely a dark purple to my eye, and blue when viewed through a CCD.

queremos amarillo tambien RA!! :beer:

oikos said:

queremos amarillo tambien RA!! :beer:

Click to expand...

I know, I know... (I can read some but I haven't practiced my Spanish since high school so I can't form sentences).

I'm thinking about the LaserGlow Rigel HV 6.
This hobby has burned a hole in my wallet, though, so it won't likely be too soon!

x90z75ek said:

This is the first time I see 473nm, 445nm and 405nm in the same picture.

Click to expand...

Ditto, but the 445 is somewhat overpowering and thus the comparison is difficult... :-/

Traveller said:

Ditto, but the 445 is somewhat overpowering and thus the comparison is difficult... :-/

Click to expand...

It is WAY overpowering. The camera does something weird with the color. Even my 532nm PGL turns out way better even though it is brighter.
I'm building a lower power 445nm which should be better on camera.

It's tough trying to get photos of lasers at different levels of brightness...
The brighter ones get overexposed with fog, but without it, the low visibility lasers (red and violet) are invisible!

RA_pierce said:

It is WAY overpowering. It's tough trying to get photos of lasers at different levels of brightness...

Click to expand...

You are 100% right - I had a lot of difficulties with my shots too. A mid-powered 445 should make for a nice comparison, so thanks for the effort :beer:

those are some AWESOME pixurs..

thank you for sharing them

I still got you beat! I've got 405, 445, 473, 488, 415, 532, 593.5, 635 and 660

Now I just need to line them all up nice and pretty like you did, My camera skills are lacking :/

+rep for awesome pics!

Here's an idea that might help taking beamshots of lasers with widely warying outputs:

Notice how a laser always seems brightest when looking towards the beam ?

Thus arranging the lasers so that the brightest are shooting away from the camera, and the weakest towards it, may help smoothing out the difference.

See these examples of a red 100mW and greens of 25mW & 80mW respectively. In the first image, red is correct, 80mW green clearly overexposed, and 25mW bordering on it too. But then notice what happens when I turn the two green away from the camera in the bottom image. Now red 100mW and 80mW green go well together, even though the latter appears much brighter when shooting the same way as red.





Cheers,
Erling