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Optoelectronics/Displays??

LED Engin rolls out double flux density emitters

Posted: 02 Mar 2016 ?? ?Print Version ?Bookmark and Share

Keywords:emitters? substrate? optics?

At the helm of last October's announcement of a breakthrough in flux and power density for high power, multi-colour LED lighting, LED Engin releases a new emitter.

Last October, they released their LZP family of RGBW 25-die, 80-watt emitters that delivered 3800 lumensthen the highest luminous flux density using a mere 6.26.2mm light emitting area on a 1212mm emitter footprint. October's achievement was based on a package design with extremely low thermal resistance.

Now, LED Engin just doubled the flux density from tiny RGBW emitters, setting a new performance standard. What that means is that they can achieve narrow-beam stage and architectural lighting that is 2 as bright but the same size as before. The LZ4-04MDPB emitter improvement is based on the ability of each individually addressable green, blue, and white die to be driven at up to 3 amps, and the red die up to 2.5 amps from the same 2.152.15mm light emitting surface as its predecessor.

spectral power vs. wavelength

Figure 1: Typical relative spectral power vs. wavelength @ TC = 25C.

In this case, the small, 7mm 7mm emitter quickly dissipates up to 40 watts of power based on the breakthrough performance of a thinner, 4-channel, multi-layer ceramic substrate that lowers thermal resistance to just 0.9C/W. What this specifically improves is heat dissipation, so that each die can be driven to a higher current without a reliability or shelf life hit.

LZ4-04MDPB

Figure 2:The LZ4-04MDPB doubled the flux density from tiny RGBW emitters.

Features of the emitter also include a lower profile substrate and thinner flat glass lens so that secondary optics are moved closer to the surface for greater illumination from fixtures with tightly controlled beam widths down to 4 degrees. The secondary lenses and optical design can be used with any existing flat top RGBW emitters as long as the lenses are properly rated for the increased temperatures. All of the above-mentioned emitters are currently available.

Additional information can be found here.

- Carolyn Mathas





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