Filament LED for aesthetic illumination

25 November 2015 Opto-Electronics

OSRAM Opto Semiconductors has premiered the first filament LED in its product range – the Soleriq L 38 – whose long, thin shape provides the basis for filament lamps which, in terms of their appearance and their emission characteristics, are more than a match for their incandescent lamp predecessors, according to OSRAM. The Soleriq lamps offer an extremely uniform colour appearance and quality of light, creating a pleasant atmosphere. They are therefore ideal for aesthetic lighting applications in the home and in hotels and restaurants.

Each L 38 has a length of 30 mm and a diameter of 1,8 mm. This shape (which is similar to that of a conventional filament) plus an emission angle of 360 degrees and its excellent quality of light, makes it perfect for use in LED lamps of all wattages that mimic the appearance of classic light bulbs.

The filament LEDs are offered in different MacAdam groups according to their colour, forward voltage and brightness – at a temperature of 85°C which closely approximates the temperature in the application. Filament LEDs therefore have an extremely uniform colour appearance and quality of light. Sorting by forward voltage enables multiple LED filaments to be connected in parallel, resulting in reliable operation with no overloading of individual filaments.

Soleriq L 38 is available in three versions with 90, 130 or 140 lumen (lm). These values enable all previous lamp wattages up to 60 W to be replaced with equivalent LED filament solutions. The driver voltage needed for the LED filament lamps can also be adjusted. All the versions have luminous efficacy of 150 lm/W and provide warm white light (2500 to 4000 Kelvin).

Thanks to the good colour rendering index of over 80, the new LED is ideal for indoor lighting, particularly in the home. The main applications include products with a traditional look and modern interior, such as classic glass bulbs with LED filaments.

For more information contact Petrus Booyens, OSRAM Opto Semiconductors, +27 (0)79 525 1779, [email protected], www.osram-os.com

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