LED Engin set to unveil ‘ground-breaking’ white light tunability

LED Engin, a specialist supplier of high flux density LED products, is set to demonstrate its Generation 3.0, tunable white light engine at Lightfair. The LuxiTune Generation 3.0 features a 2200 lumen emitter, equivalent to a 120W halogen lamp, that delivers smooth halogen-style dimming from 1600K to 3000K and Correlated Colour Temperature (CCT) tuning between 2100K and 4300K.

Both tuning curves track the black body curve closely and light intensity (flux) is adjustable from 100% to less than 0.5%, giving lighting designers more creative freedom. With the complementary secondary optic, luminous efficacy is an industry-leading 63 lumens/W at steady-state temperature and Colour Rendering Index (CRI) is 90 at full intensity, being maintained at an average of 85 as the LED is dimmed.

The light engine is DALI and DMX compatible, and delivers flicker-free operation with industry-standard analogue 0-10V dimmers. Self-learning mode eliminates known issues in installations with multiple lamps on one dimmer due to varying voltage drops on long and short cables. DMX control can be used to switch between CCT tune and halogen dim modes.

LuxiTune uses a compact, single emitter to deliver warm, soft tones of dimmed light. It maintains colour quality and consistency within 3 Standard Deviation Colour Matching (SDCM) throughout the dimming range. The multi-channel emitter platform results in more vibrant colours without some of the hue changes experienced with simpler two-colour systems. Smart feedback control ensures flux and colour stability over the life of the product and eliminates the known effects of varying light output over temperature and time from different colour dies. Furthermore, there are no perceptible flickering effects in the 100Hz to 200Hz range.

84mm diameter secondary optics are available in 24°, 34° and 45° beam angles and support the development of compact lighting fixtures.

LuxiTune 3.0 features a driver board separated from the LED MCPCB allows the driver board to be mounted remotely, a particularly useful feature in recessed metal box downlights. A separate emitter is also easier to integrate into swivel features and heat from the driver board does not increase the temperature of the LED, so reliability and operating life are improved.

An 1100 lumen version of the latest LuxiTune, equivalent to a 60W halogen lamp, is also available.

Volume production IS ramping in the third quarter of 2014.



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