Osram Opto Semiconductors, has come out with five color new versions of the Duris P 5 mid-power LEDs. Like the white versions, the new color versions are said to have high luminous efficacy from a compact form factor. The LEDs are ideal for architecture lighting and for hotels and restaurants.

The five color versions of Duris P 5 are: “deep blue” (450 nm), “blue” (470 nm), “true green” (528 nm), “yellow” (590 nm) and “red” (615 to 625 nm). The LEDs employ LED chip technologies from Osram, based on either the InGaN (Indium Gallium Nitrite) material system or InGaAlP (Indium Gallium Aluminum Phosphite) depending on the wavelength.

The company says that low forward voltages and optimized light extraction result in high luminous efficacies for all of the new LEDs. The “deep blue” version, for example, delivers a light output of 140 mW (at 100 mA and 25 ºC), corresponding to a typical efficiency of 48 percent. Efficiency is defined as the ratio of the amount of light produced to the amount of power consumed.

As members of the mid-power class, the color versions of Duris P 5 are ideal for linear, area or omnidirectional lighting applications in which the light has to be distributed as uniformly as possible. Color mixing is also said to be much easier in applications involving several colors.

“The color Duris P 5 versions will give our customers even greater freedom in designing luminaires. A good example is the combination of white and colored mid-power LEDs within a luminaire,” said Martin Wittmann, Product Manager Marketing SSL at Osram Opto Semiconductors, and added, “The use of the Duris power class also reduces system costs while at the same time improving the distribution of light and simplifying thermal management.”

Like the white versions in the P 5 family, the package technology of the colored Duris versions allow them to withstand extremely harsh conditions and increasing corrosion resistance compared to conventional mid-power LEDs. The company says that the small component dimensions of only 2.6 by 2.2 mm also allow good optical control in connection with secondary optics.

Osram Opto Semiconductors points to architectural and signage applications as uses for the new LEDs. The company also mentions the possibile use of the Duris color versions in “remote phosphor” applications in which the converters needed to generate white light are not attached directly to the chip but are illuminated by “deep blue” LED from a certain distance, causing them to luminesce. The company says that this remote phosphor technology results in uniform distribution of light and high luminous efficacy.

The color Duris P 5 versions debuted at the Osram booth 1001 at Lightfair 2013