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My Rainbow -- Post Pic's of Yours

Crazlaser

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Oct 11, 2016
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Feeling good about this one! :D What should I add next?
quBaOIy.jpg
 
Last edited:



farbe2

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Oct 3, 2018
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Hey guys! what's going on? We currently have many more wavelengths available than ever before, however nobody is posting pics of there rainbows anymore.
SO i will start:
IMG_0588.jpg
IMG_0591.jpg
IMG_0597.jpg
IMG_0600.jpg
IMG_0589.jpg

These are
665nm 638nm 532nm 514nm 502nm 491nm 485nm 478nm 453nm 407nm
I modified standart 405nm laser with different diodes.

I have planed to build 613, 571, 565, 550, 545, 520, 472, 468, 445. I already have the diodes / modules nessasary to do so, however i am still missing hosts and time to build these. 589 and 594 are to expensive for me :(
 

RA_pierce

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Sep 16, 2007
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@farbe2 Very nice! Like you, I need to get a few of my lasers up and running and post an updated rainbow. I have a 475 and 570 that need hosts. I just haven't had time to do much work on the mill lately.

@ZRaffleticket I've been thinking that it might be worth trying my old film camera for the yellow-green and green-cyan lasers. I wonder if film has a better ability to record the full spectrum of light than digital formats. The simple RGB design of CMOS sensors just can't resolve the fine color differences we see with our eye. I've tried 4 different cameras and all of them fail to accurately record 510-485 nm and 570-560 nm. I've resorted to color correction in photoshop. I'll try film and report on the results...
 

A30N

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Dec 17, 2011
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How did you get your 405 and 650 to be as visibly bright as the greens? They must be lower output comparatively.
 

farbe2

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Oct 3, 2018
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I did build my pointers to have the same apparent brightness. So 515nm is only 10mW or so, 660nm is 180mW or so. 406nm is around 250mW.
I did that to have all colors at the same brightness. I am aware that this will cause some colors to be more dangerous than others.
However i intended to use only single mode diodes/dpss to get the best beam, so this limits my power to some extend.
If somebody wants, i still have some of these nice 473nm 25mW diodes left.
 

ZRaffleticket

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Feb 4, 2010
Messages
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I only really added fog to make the beams more visible. However, it is also true that the 505nm is maybe 30mW and the 405 and 650 are closer to 300mW. I excluded my 1.5W 532nm to avoid washing out the picture, and avoided 355nm because that is totally invisible to my camera
 




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