SOLERIQ L 38 offers excellent color appearance and quality of light for aesthetic illumination
OSRAM Opto Semiconductors presents SOLERIQ L 38, the first filament LED in this product family. With a long and thin shape, these LEDs provide the basis for filament style lamps and match incandescent lamps in terms of appearance and emission characteristics. SOLERIQ LEDs deliver a uniform appearance in terms of color and can serve as a high-quality light source that is ideal for aesthetic lighting applications in homes, hotels and restaurants.
Each SOLERIQ L 38 has a length of 30 mm and a diameter of 1.8 mm. Similar to a conventional filament, the shape of the SOLERIQ LED – in addition to its 360-degree emission angle and excellent light production quality – make it perfect for use in LED lamps of all wattages as it mimics the appearance of classic light bulbs. SOLERIQ L 38 LEDs are offered in different MacAdam groups based on color temperature, and binned at a temperature of 85° C, 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 Martin Wittmann, Marketing and Business Development Manager for General Lighting at OSRAM Opto Semiconductors. “Incorporating the LEDs in classic lamp production lines is simple. With minor modifications to the manufacturing process, these LEDs can be installed in the lamp in the same way as traditional filaments.” Additionally, sorting by forward voltage enables multiple LED filaments to be connected in parallel, resulting in reliable operation with no overloading of individual filaments.
Traditional lighting design and state-of-the-art technology
The SOLERIQ L 38 offers high brightness, similar to all SOLERIQ products, and 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 an extremely high luminous efficacy of 150 lm/W and provide warm white light (2500 to 4000 Kelvin). Due to a good color rendering index of over 80, the new SOLERIQ L 38 is ideal for indoor lighting, particularly in the home. The main applications include products with a traditional look and also modern interiors, such as classic clear glass bulbs with LED filaments.
As a note, David Lewis MacAdam was an American scientist whose research into color perception has been used to sort light sources according to homogeneity.