News

30 July 2009

 

Osram’s new TopLED Black Series LEDs for display applications

Osram Opto Semiconductors GmbH of Regensburg, Germany says that its new TopLED Black Series with lens is a range of medium-power LEDs mounted in a matte black, industry standard package. According to the firm, the black package offers higher contrast with lower reflectivity than comparable white-package devices without compromising overall luminous intensity, making the series ideal for display applications where contrast is key for legibility.

The TopLED Black is the first TopLED in a black package that can achieve a typical luminous intensity of 1.9 cd (at 20 mA) and is to date the only LED in a black package that provides the same luminous intensity as a comparable LED in a white package, adds the firm. Applications include information displays for traffic and public transportation systems and price changing displays, such as fuel price totem pole signs.

The 60° beam angle of the new LED has been optimized for display applications, so the light is focused for excellent distance legibility.

Initially available in red and yellow, the TopLED Black Series will be equipped with a thin-film chip that the firm says guarantees high luminous efficiency. As “surface emitters”, thin-film LEDs emit almost all their internally generated light from their surface.

The new LEDs are SMT components suitable for automatic handling, and they provide high placement tolerances for highly uniform light dispersion.

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