Opto-Electronics


Bright white InGaN lamps for electronic sign and signals applications

6 October 2004 Opto-Electronics

A series of extra-bright white InGaN (indium gallium nitride) LEDs targeted for the electronic sign and signals market are available from Agilent Technologies. The company's brightest white InGaN LEDs, they address a wider range of indoor and outdoor applications that require very bright LEDs. The combination of high brightness and weather-resistant packaging makes them highly suited for applications such as gaming machines, traffic signals and signs, stadium scoreboards, advertising and other variable message signs.

The HLMP-CWxx circular-pattern and HLMP-FWxx flat-top extra-bright white LED lamps are available in 15-, 23-, 30-, 50-, 70- and 85° circular viewing angles. The spatial radiation pattern and high luminosity make these devices excellent for wide field-of-view outdoor applications, where a wide viewing angle and readability in sunlight are essential.

The LEDs are based on the efficient and cost-effective flip-chip InGaN material technology. These extra-bright white LEDs are supplied in 5 mm (T-1 ¾) through-hole packages and combine through-hole packaging technology to ensure maximum light extraction from the die. The die is attached within the reflector cavity, and the cavity is encapsulated by Agilent's proprietary epoxy blend. This means the lamps perform with high reliability over the -40 to +85°C temperature range and are protected from UV radiation and humid environments. www.avnet.co.za





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