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ArcticMyst Security by Avery

proper power setting for rgv projector

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Apr 23, 2009
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i seem to remember a link for a program that helps find the proper power ratings. gonna be using an sf aw210 an loc and a 50mw greenie
 





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I think you're referring to Chroma.. more info on that can be found on photonlexicon.com.
 
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Just remember that it isn't the power from your laser modules that you care about. It is the power that is coming from your last galvo mirror. There is a substantial drop in power between there and your laser modules due to optics.
 
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personally i would recommend ignoring chroma and buying what ever you can afford.

powers can be adjusted in software afterwards to get the perfect colour match
 
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And once again, Andy to the rescue with the right answer! I don't put a lot of stock in Chroma since the idea of proper color balance is highly subjective. Go with what your wallet suggests and tune to your tastes later.
 
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lol

no laser outputs its exact stated power, power loss though mirrors, dichros and galvo mirrors - chroma does not take any of this into account.

you also have beam size which i dont think chroma doesnt take into account.


so buy what ever you can afford
 

Things

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Chroma is good if you wanna get a rough idea of what you're gonna get, ie, "Hmm, what happens if 532 with a bit of 405 and maybe some 650?" but it wont be the exact same as your laser will output. As everyone else has said, buy whatever you can afford.
 

aXit

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Chroma is also nice for getting precise luminosity value for different wavelengths. Comparing brightness of 405nm and 450nm diodes for example. :p
 
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alright, well i just got some dichros and wanted to know how reflective there supposed to be, i think the ones i have arent ment for the wavelength lasers im using because a pbs cube seems to be more efficient, where do i get good dichros that wont break the wallet.
nick
 
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Edmunds Optics has pretty good ones but they cost around $50 a piece. But, good dichros are one of the most important parts of the laser so you need good ones. Bad dichros will severely cut into your laser power and turn a $400 laser into a $100 laser.
 

Benm

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In the specific case of mixing 660, 532 and 405 you could consider using parts from the PHR803 sled. That contains a combining cube that can be used for mixing 405 and 660, as intended.

It also has a dicro of sorts that reflects 405 and 660 very well at a 45 degree angle, while passing most green coming through at a 90 degree angle. There is some loss with the green, but thats likely to be the color you have more than enough off.
 
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yup, what andy said.....

...Photonlexion has the answers to all of your scanner questions. If you want a serious answer I would ask them.


ps-I get my dichros from lasershowparts.com, the best place ;)
 
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^^^ :)

ive got dichros from laserwave and edmund optics.

at the end of the day you get what you pay for
 




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