MisturrTinnie Posted August 27, 2014 Share Posted August 27, 2014 What kind of combination of blue leds do people use to not have the windex color? Just only blue leds? Or is there a good combo of royal blue and blues? I need a combination of 3 LEDs. I was thinking 2 XP-E blues and 1 XT-E royal blue. Would that be a good color? Thank you for all help. Link to comment
bdevillier19 Posted August 27, 2014 Share Posted August 27, 2014 It varies from build to build but I'd say a common ground would be a 2:1 blue to nw ratio with the blues being 50/50 royal blue to cool blue to help eliminate the purple hue from a royal blue/neutral white combo Link to comment
jedimasterben Posted August 27, 2014 Share Posted August 27, 2014 You don't want your primary 'blue' to be blue, you want royal blue. Use one blue for every four or so royal blue. Link to comment
bdevillier19 Posted August 28, 2014 Share Posted August 28, 2014 I stand corrected. Good to know. Jedi to the rescue once again! Link to comment
Nano sapiens Posted August 28, 2014 Share Posted August 28, 2014 You don't want your primary 'blue' to be blue'... Unless one really enjoys the 'Windex' look Seriously, Jedi's right on here. I used one 'Blue' to a bunch of Royal Blue and Hyper Violet and I could still notice just a bit of the Windex look. Our eyes are sensitive to blue and especially blue-green/green. Link to comment
zooman72 Posted August 28, 2014 Share Posted August 28, 2014 I believe it is somewhat dependent on the specific diodes used (they are not all the same) as well as the user's perception (we are not all the same, and some are more "susceptible to purple"). I have used a 2:1 ratio of Luxeon ES RB:CB diodes to reduce (or eliminate) the "purplish cast" from certain neutral whites, and the Maxspect Razor 16000K (probably my favorite commercial fixture currently) has a 4:3 ratio of RB (Cree XT-E):B (Cree XP-E). To the OP - if you are restricted to 3 diodes at a time, then reverse your ratio, and hopefully you find that it works for you... Link to comment
MisturrTinnie Posted August 29, 2014 Author Share Posted August 29, 2014 So with 3 available spots for blues I should just use 3 royal blues? That's what all the posts seem to go to. Link to comment
nanosaurus Posted August 29, 2014 Share Posted August 29, 2014 Why do you only have 3 spots? Link to comment
zooman72 Posted August 29, 2014 Share Posted August 29, 2014 So with 3 available spots for blues I should just use 3 royal blues? That's what all the posts seem to go to. You could, but it may depend on what whites you are using - lower-K whites with just royal blues could result in a bit of purplish cast, which adding some cool blue/blue may counter. If using just higher-K cool whites, adding cool blue may result in the "windex" look. Again, look at the Maxspect Razor, using the same diodes you proposed (unknown bins though) in a 4:3 ration along with a 1:1 ratio of cool whites to warm whites and added violets - works well for that example. Also, BML uses a 4:3 ratio of 470nm ("cool blue") to 450nm (royal blue) in their 20K light strips (along with cool whites, warm whites and violets, unknown diodes), and there is no "windex" appearance there either. I personally like using standard or "cool" blues a bit, as it widens the blue spectrum and appears to brighten the overall look, but YMMV... Link to comment
MisturrTinnie Posted August 29, 2014 Author Share Posted August 29, 2014 Why do you only have 3 spots? I'm modding my current fixture. I'm just gonna order 3 royal blues, and 2 blue and see which combo I do like. Link to comment
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