For smart lighting solutions and colored lighting applications, Osram Opto Semiconductors GmbH of Regensburg, Germany has launched Duris S 5 Color LEDs - available in four color versions: Red (620nm), Amber (610nm), Green (545nm) and Deep Blue (450nm) - in an industry-standard 3.0mm x 3.0mm epoxy-based package with an emission angle of 120°.
Usable in color-mixing systems as well as in combination with packaged phosphor-converted white LEDs, all Duris S 5 Color versions are based on the same chip technology using phosphor conversion to generate the saturated red, amber and green colors. They hence all feature the same electrical behavior and are compatible with the Duris S 5 White LED, simplifying driver design. In addition, the red and amber Duris S 5 versions are claimed to be best in their class for lumen maintenance and temperature stability between 25°C and 85°C, reducing the complexity of color management in different conditions.
Osram Opto says that the use of red and amber in combination with white LEDs can compensate for missing colors in the white spectrum, increasing the color rendering index (CRI) with rich Ra values.
The green color versions offer high luminous efficacy of 170lm/W (three times higher than that of comparable standard green color LEDs, it is reckoned). This reduces assembly costs, as fewer LEDs are needed (to achieve the same brightness) and PCB design can be more flexible.
The typical forward voltage Vf (at a forward current of If=150mA) is 6.2V. Brightness levels are hence high: 28lm for red, 45lm for amber, 170lm for green and 420mW for deep blue.
