Osram light engine enables highly compact LED luminaires


Luminaire COMA L LED with light engine Prevaled Core AC

Osram, in collaboration with the Munich luminaire manufacturer Markgraf Licht, has developed an LED track spotlight that requires no external control unit. The product was developed in a record time of merely six weeks. The Coma L LED is based on the Prevaled Core AC light engine from Osram with the control unit integrated in the LED module. "Our light engines enable luminaires that are more compact than all models available up until now," commented Geert van der Meer, Head of LED Lamps and Systems business units at Osram. "This form of miniaturization is a further advantage of LED over standard technologies, and is therefore a highly important step towards general lighting."

Luminaire COMA L LED with light engine Prevaled Core AC

The project was originally only intended as a technical survey to demonstrate the possibilities of the new generation of light engines. "Our customers showed so much interest in the project that we decided to offer it as a series product," stated Eugen Markgraf, Managing Director of Markgraf Licht. The designers gave the luminaire a purist appearance, in line with the very slender Prevaled Core AC light engine, and the outer form is characterized by the chromed reflector and black heat sink.

The miniaturization of control unit electronics in the Prevaled Core AC not only enables a significantly more slender design but also a reduction of components and weight. The spotlight comes in three different color temperatures, all with good colour rendering characteristics.

Prevaled Core AC technical data

Variants (luminous flux) 800 lm 2000 lm
Light color 2,700, 3,000, 4,000 K 2,700, 3,000, 4,000 K
Efficiency Approx. 60 lm/W (depending on light color) Approx. 80 lm/W (depending on light color)
Color rendering index (CRI) > 80 > 80


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 more than 35,000 employees worldwide and generated revenue of almost €5.3 billion in fiscal 2013 (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-group.com