LED technology is start to growing up rapidly now. Many lighting industries are encountered the firm believers in LED technology and started to step into dedicated the LEDs in general lighting and white light applications. The LED as lighting applications are now still in research and development, as well as the number of new LED product ranges being brought to the market. Living green with LED to save the earth and environment together.
Monday, February 11, 2013
Lumileds introduces high-voltage and high-lumen-density LEDs
The Luxeon Z is a very small, unencapsulated LED package that can be used to build multi-chip arrays, while the Luxeon H50-2 is an improved version of Lumileds’ high-voltage package.
Philips Lumileds has recently introduced several new ranges of LEDs, including the Luxeon Z, described as “the industry’s smallest high-power LED package,” and a new version of its high-voltage Luxeon H.
Luxeon Z
With a package size of 1.7 x 1.3 mm, or 2.2 mm2, the Luxeon Z has the “industry’s highest commercially-available lumen density,” claims Lumileds. The highest-rated bin for 4000K white (CRI=70) measured at 25°C and 500 mA has a typical flux and efficacy of 148 lm and 102 lm/W respectively. At 700 mA, the figures are 194 lm and 94 lm/W.
The Luxeon Z is available in white as well as in a range of colors from 440 to 670 nm, using either AlGaInP or InGaN chips. It is unencapsulated, allowing the use of custom optics.
Lumileds says that the small form-factor of Luxeon Z will allow it be used to create specialized mono-color or multi-color arrays for existing and new luminaires. Up to 250 Luxeon Z LEDs can be mounted in one square inch, says the company.
“Luxeon Z fundamentally takes the building-block approach and puts design flexibility back in the hands of engineers and specifiers,” says Rahul Bammi, VP product management at Lumileds.
High-voltage Luxeon H LEDs
Lumileds as also introduced a new version of its high-voltage Luxeon H, the H50-2, which is intended for space-constrained retrofit lamps such as the common A19, as well as candelabra and GU10 lamps. With a typical efficacy of more than 80 lm/W, the H50-2 improves on the existing 50V Luxeon H by 27%.
The high-voltage LED approach enables the use of simpler, more cost-efficient drivers, compared with conventional LEDs that are driven in the region of around 3V. “This new LED package works with simple, highly-efficient drivers, enabling lighting designers to create unique form factors at lower costs,” said Viji Krishnamurthy, product manager at Lumileds.
Luxeon K arrays and mid-power 3535 LEDs
Lumileds has also recently publicized its Luxeon K arrays, available with 4, 8, 12, 16 and 24 emitters. Outputs range from 400 to 4000 lm, with CCTs of 2700K, 3000K and 4000K.
Finally, the Luxeon Mid-Power 3535 is designed for non-directional light sources, such as LED troffers and tube lights, which are used in commercial and residential applications.
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