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Optoelectronics/Displays??

LEDs promise high brightness, wide viewing angles

Posted: 31 Jul 2007 ?? ?Print Version ?Bookmark and Share

Keywords:oval through-hole LED lamp? ESS applications? LEDs?

Avago Technologies has announced a new series of Extra Bright II oval red, green and blue LEDs for the electronic signs and signals (ESS) market. The 4mm and 5mm oval through-hole LED lamps have been specifically designed for use in full color ESS applications such as passenger signs, variable message signs, scoreboards and channel lighting.

The HLMP-Lx63 (4mm) and HLMP-Hx63 (5mm) series of LEDs provide an oval-shaped radiation pattern, wide viewing angle and high illumination intensity to make display characters viewable from any angle in bright sunlight. Typical viewing angles are 40 x 100 for the 5mm oval LEDs, and 50 x 100 for the 4mm oval devices.

The LED lamps also have a very smooth, matched radiation pattern to ensure consistent color mixing in full color applications, and each lamp is made with advanced optical grade epoxy to offer superior high temperature and high moisture resistance in outdoor ESS applications, said Avago. The operating temperature range is -40C to 100C for the red LEDs and -40C to 85C for the blue and green LEDs.

With the HLMP-Lx63 and HLMP-Hx63 series of extra-bright 4- and 5mm oval through-hole LED lamps, electronic signs can be designed using fewer individual LEDs to provide equivalent brightness. Avago added that the signs can also be designed with the same number of LEDs to provide substantially higher brightness levels for better readability and contrast.

The lead spacing and packages are compatible with conventional high-brightness 4- and 5mm standard and miniature oval-pattern LED lamps. The extra-bright HLMP-Lx63 and HLMP-Hx63 LEDs are supplied in Avago's precision optical performance molded packages to offer high brightness and low-power consumption.

The red (HLMP-LD63 and HLMP-HG63) LEDs are priced at 20 cents each while the blue (HLMP-LB63 and HLMP-HB63) and green (HLMP-LM63 and HLMP-HM63) LEDs are priced at 45 cents each in quantities of 10,000. Samples and production quantities are available now.

- Gina Roos
eeProductCenter




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