Interesting new 20W 7 channel LED from LEDEngin

[R_MC]

I thought this light from LEDEngin was very interesting

 

 

http://www.digikey.com/product-detail/en/led-engin-inc/LZ7-04MU00-0000/LZ7-04MU00-0000-ND/5262422

 

http://www.ledsmagazine.com/articles/2016/04/packaged-leds-led-engin-integrates-seven-colors-lumileds-and-osram-opto.html

 

The new LZ7-04MU00 includes RGBW die and cyan, violet, and phosphor-converted amber die.

 

The light doesn't have enough blue, but the RGW channels could be under-driven to compensate. The blue channel could then possibly be over-driven. Surprisingly, this LED has Cyan and Violet. All 7 emitters are on a 7x7mm package... super tiny.

 

I'm most interested in this LED as it would be able to provide kessil/MH like shimmer without the annoying Disco effect. Even the famed Nanobox V3 produces pronounced disco shimmer. Additionally, compact reflectors could be used with this LED in order to mount it high above the tank, again without worry of banding.

 

If LEDEngin were to produce a similar chip with a higher blue count this would be perfect!

 

The chip currently retails for ~$18 per, but will likely fall once the next gen emerges.

[DaveFason]

Pretty much all LED arrays with have some type of separation of colors. It is the nature of the beast with LEDs. When proper amount of LEDs are arranged over a tank this effect can go away. You can also get rid of a lot of this by having less surface agitation, correct height of LEDs and few other little tips and tricks. The above you will still get separation once you start adding more and more of them unless you put each next to each other. Then cooling comes into play.

 

Luxeon has been making the Z package size LEDs for some time and there are quite a few mounts now available. It is just finding people who can mount them.

 

This website has something similar as above but will cost more depending on QTY. One thing that is nice is the Z's are made by Philips.

http://www.luxeonstar.com/saber-micro-z1-luxeon-z-led-module

http://www.luxeonstar.com/saber-z4-luxeon-z-20mm-square-color-mixing-array

 

Hope this helps!

-Dave

[R_MC]

Very interesting. I think this LEDEngin still has the highest density of any multicolor-multichip I've seen with a LES of 3.8mm for 7 color channels. Not bad.

 

Great find on those two links. I've been keeping an eye on Luxeon Star LEDs - intrigued if they have any higher density options on the way.

[evilc66]

I've actually talked with LEDengin in the past about getting a custom array made, and while it's possible, the upfront costs were insane (tooling, minimum quantities, etc...). Seeing as they don't make their own dies, they get to pick and choose from the industry, including Cree and Lumileds, so their quality is pretty high.

[R_MC]

I tried the same with Phillips after seeing some of their dense multichip arrays

 

 

They gave me the same kind of quote... I think it would have ended up at > $30,000 for the first run.

[evilc66]

The kicker with the Luxeon K (all but the smallest one) is that they are using the Luxeon Z ES LEDs, which aren't pad compatible with the Luxeon Z. Believe me, I looked into that a LOOOOOONG time ago

[jedimasterben]

The kicker with the Luxeon K (all but the smallest one) is that they are using the Luxeon Z ES LEDs, which aren't pad compatible with the Luxeon Z. Believe me, I looked into that a LOOOOOONG time ago

The Luxeon K actually uses Luxeon T (which actually are pad compatible with the Z ES lol)

[R_MC]

I think this is really the next step in LEDs for aquarium use. There are too many problems with the widely spaced chips... With the studies showing that coral stop growth when exposed to higher ratios of red:blue I can't help but wonder what effect the constant color shadowing has on our coral. Due to shadowing from growth and color banding there will often be small sections exposed to only one color LED. With fixtures that contain 630/660 or ww, the patch may be in that band only. With how much we obsess over the perfect mix for growth, this seems like major oversight from manufacturers who are still focusing on widely spaced arays of multi-color LEDs.

[evilc66]

Sorry, I meant the Luxeon S, which is what is pictured above. That's using the Luxeon Z ES. You are right that the K is using the Luxeon T dies, but it's a CoB style setup, rather than a multi-emitter MCPCB that the larger S models use.

[R_MC]

Sorry if I derailed - that wasn't even the multichip I was looking for. What I sent Luxeon inquiries about a couple years back was the Z multichip shown in a few videos

 

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Sadly, these do not seem to exist... And of course, if they did you'd need some super conductive heatsink to suck the temp away from the center.

[evilc66]

I'm pretty sure those were precursors to the Luxeon S. They would be so awesome to have though.