The concept ‘LED filaments instead of tungsten wire’ is now implemented in the product Soleriq L 38 by Osram Opto Semiconductors, the first filament LED in its product range. The long thin shape of the LEDs provides the basis for filament lamps.
As Osram reports, the LEDs offer a uniform color 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 Soleriq 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 make them ideal for use in LED lamps of all wattages that mimic the appearance of classic light bulbs.
“Customers will benefit from these properties, particularly if they want to install multiple lamps or luminaires”, said Product Manager Wong Kum Yih of Osram Opto Semiconductors. “Incorporating the LEDs in classic lamp production lines is very simple because with only minor modifications to the manufacturing process they can be installed in the lamp in the same way as traditional filaments.” Sorting by forward voltage enables multiple LED filaments to be connected in parallel, resulting in reliable operation with no overloading of individual filaments.
The new product 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. According to the Munich, Germany based company, all the versions have a high luminous efficacy of 150 lm/W and provide warm white light (2500 to 4000 Kelvin). Thanks to the color rendering index of over 80, the new Soleriq 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.