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Old 11-08-2007, 06:55 PM #17
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Default Re: 100mW Red For 35?!

Depending on the balance yellow/orange.


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Old 11-08-2007, 07:29 PM #18
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Default Re: 100mW Red For 35?!

Quote:
Originally Posted by xgeek
Depending on the balance yellow/orange.
Awesome! I will probably go for a 50mw green and 100mw red.
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Old 11-08-2007, 08:31 PM #19
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Default Re: 100mW Red For 35?!

lamborgin read the whole of my scanner guide it may help you.

for a good colour match red is 3:1 with green.

so for 50mw of green you would need 10mw of red for a good colouor match
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Old 11-08-2007, 08:52 PM #20
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Default Re: 100mW Red For 35?!

Quote:
Originally Posted by andy_con
100mw ??????????????

the ones i can get can do 200mw
well andy one of his 100mw has clocked in at a steady 207mw with a good heatsink, the other is running at 197mw, so they do work well with good heatsinking, and can be optimised with the onboard trim pot.

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Old 11-13-2007, 04:49 PM #21
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Default Re: 100mW Red For 35?!

Quote:
Originally Posted by andy_con
lamborgin read the whole of my scanner guide it may help you.

for a good colour match red is 3:1 with green.

so for 50mw of green you would need 10mw of red for a good colouor match
Eh....??

Don't you mean the other way around?
If I were to use the 35mW new DX labby, would 100mW of Red do?

Also, if I were to use the 100mW green DX labby, how much red should I typically use? and where can I get red labby's that powerful? and cheap!

Also, if I were to throw some blue in later, what kind of mW are we looking at?
Lastly, how do you calculate these ratios? Is it 'by eye' or is there some ugly maths and physics behind it!?!? ;D
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Old 11-13-2007, 05:38 PM #22
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Default Re: 100mW Red For 35?!

Quote:
Originally Posted by danielbriggs
Lastly, how do you calculate these ratios? Is it 'by eye' or is there some ugly maths and physics behind it!?!? *;D

This graph should do the trick.. *This is a graph of the visible threshold intensity plotted against wavelength for the dark-adapted eye (scotopic curve) and the light-adapted eye (photopic curve).




It's important to note that the both curves are normalized to show a peak at 100. Scotopic vision is actually much more sensitive.
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Old 11-13-2007, 06:22 PM #23
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Default Re: 100mW Red For 35?!

Pseudo posted a very good link on how optical colors mix but I can't find it now.
It's a very nice chart and all you do is draw lines to connect the wavelengths being mixed and point to the color you want. the ratio is just the same ratio as the distance between the wavelengths

gotta find that link again.

anyway 3:1 for red:green=orange
and IIRC 4:2:1 for red:green:blue=white

I recommend 35mW DX labby and Senkat diode running at under 160mA should get you there.

*edit *Found it
http://en.wikipedia.org/wiki/CIE_1931_color_space
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