What is the correct fomula for ~ "Red to Green to Blue" ratio

[Weiland]

First off I would like to say Hello to everyone here, I have taken my time to look around and check out a lot of ppl's posts and let my dreams take over a bit. I hope to meet some of you in the future at the next "SELEM" event. Maybe by then Ill have something to bring to the table and play with.

-I was told at one time, that there was a formula for a correct ratio of "RED to GREEN to BLUE" so that one color does not out wash another.

-Is there an average i can stand to, that will give me a basis for building my projector.
Im looking to build at least a 1/2 -3/4 watt projector.

-If im going off of a 150-200 mw green, what red and blue would i need.
-What watt U Violet could I substitute the blue for.


I understand that different frequencies produce better color also, would this be something i need to take in to account also.

In advance thanks for any comments .

Weiland

[allthatwhichis]

Your best bet is to search for this "issue"; there are probably a dozen or so threads with the same question answered. Long storey short; whatever looks best to you and makes you happy. Like I said there are many threads on this, search "color balance" and you should get many hits... and a good explination faster than it would take most of us to go into detail of this and that... plus it is an open debate that doesn't need a new thread.

[edison]

calculate???? Use tocket,s chroma. Do a search for chroma on pl and you will find it here on pl

[dream beamz]

welcome to PL, i am original from columbia

[Carl B]

Hi Weiland

150mw 532nm Green, 150mw 473nm Blue and 400mw 650nm Red works well for me but using a 300mw 640nm Red would be a better bet with better beam specs.

Carl

[norty303]

Interesting that Carl says his red/green balance is ok. I have 400mW of 532 and 1.1W of 650 and the green still stomps all over the red. I think you'd need about 600mW of 640 to get the same effect (according to Tocket's Chroma anyway) but without the red halo.

[Weiland]

Thanks guys, for the info, and at least a start to what idea i have. I will look into the tocket and the chroma to do more research on this. Its hard to know where to start when you are new to all the terms and definitions.

Has anyone used the U Violet lasers in stead of the blue....im looking in to that also as an alternative for cost. I have not seen one in action yet to make my own opinion.

Weiland

[300EVIL]

Has anyone used the U Violet lasers in stead of the blue....im looking in to that also as an alternative for cost. I have not seen one in action yet to make my own opinion.

Weiland

Do a search for "RGV" on this site. You will find tons of info, video and pics using 405nm "BluRay" laser diodes.

[Carl B]

Interesting that Carl says his red/green balance is ok. I have 400mW of 532 and 1.1W of 650 and the green still stomps all over the red. I think you'd need about 600mW of 640 to get the same effect (according to Tocket's Chroma anyway) but without the red halo.

My white looks a little warm but is verry accepable and the yellow is just mega.

Carl

[mccarrot]

THe formula is arround 1-1-4 (G-B-R) for 655nm red, and 1-1-2 for 640nm red.

Some say 1-2-4, but then I find the beam too blue, but it all depends on your optics.