Osram adds filament LEDs to its range
Osram Opto Semiconductors is offering the first filament LEDs in its product range. Called Soleriq L 38, the long thin shape of the LEDs 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 LEDs offer a highly uniform colour appearance and quality of light, creating a pleasant atmosphere. They are suited 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 and their quality of light make them suitable for use in LED lamps of all wattages that mimic the appearance of classic light bulbs.
Soleriq L 38 LEDs are offered in different MacAdam groups according to their colour, forward voltage and brightness - at a temperature of 85degC which closely approximates to the temperature in the application.
"Customers will benefit from these properties, particularly if they want to install multiple lamps or luminaires fitted with Soleriq L 38 in a room", 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 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 a high luminous efficacy of 150 lm/W and provide warm white light (2500 to 4000K). Thanks to the colour rendering index of over 80, the new Soleriq is well suited to 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.