Products, Materials + Tools | Oct 30, 2015

Osram Adds Filament LEDs to Its Product Portfolio

LED filaments instead of tungsten wire. Osram Opto Semiconductors presents the Soleriq L 38, the first filament LED in its product range. 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. The Soleriq LEDs offer an extremely 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.
Technical data:
Package 30 mm x 1.8 mm (diameter)
Brightness 90 lm / 130 lm / 140 lm
Forward voltage

90 lm: 56 – 64 V
130 lm: 82 – 90 V
140 lm: 88 – 96 V

Color temperature 2500 – 4000 K
Color rendering index (CRI) >80

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 excellent quality of light make them perfect 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 color, forward voltage and brightness – at a temperature of 85°C which closely approximates to the temperature in the application. Filament LEDs therefore have an extremely uniform color appearance and quality of light.

“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.

Like all Soleriq products, the L 38 offers high brightness. It 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). Thanks to the good 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.

David Lewis MacAdam was an American scientist whose research into color perception has been used to sort light sources according to homogeneity.

You can find more information on the Soleriq L 38 in the product catalog.

About Osram:
Osram of Munich, Germany is one of the two leading light manufacturers in the world. The company's portfolio covers the entire value chain from components – including lamps, electronic control gear and opto semiconductors such as light-emitting diodes (LED) – as well as luminaires, light management systems and lighting solutions. Osram has around 34,000 employees worldwide and generated revenue of more than €5.1 billion in fiscal 2014 (ended September 30). The company's business activities have been focusing on light – and hence on quality of life – for over 100 years. The company was listed on the stock exchanges in Frankfurt and Munich on July 8, 2013 (ISIN: DE000LED4000; WKN: LED 400; Trading symbol: OSR). Additional information can be found at www.osram.com

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