Osram Ostar Stage LEDs

The Osram Ostar Stage LEDs from Osram Opto Semiconductors offer luminance of 48 million candelas per square metre (Mcd/m²) and tunable colour tones from cold white to warm white. The LEDs are suitable for use in moving head spotlights on stage, for booth lighting at trade fairs and for architectural lighting.

The LEDs feature a tunable white light colour. Two warm-white and two cold-white chips, arranged diagonally in the package, enable colours to be mixed perfectly at the component level and also allow all white tones between colour temperatures of 2700 K (warm white) and 10,000 K (cold white) to be produced with precision control. The LEDs achieve a colour rendering index of 94 for warm white and 74 for cold white.

Instead of the usual lens, the Ostar Stage LEDs have a flat glass cover with an antireflective coating, making them suitable for injecting the light into lens systems. Their etendue (the emission angle/area ratio of the emitting light surface to the projected light surface) in conjunction with external optics is retained, enabling a very narrow beam of light (±9°) to be produced. This beam is smaller by a factor of 2 compared to spotlights based on plastic-encapsulated LEDs. Consequently, the luminance of the spotlight is greater by a factor of 2.

At 1.23 mm, their height is one quarter of the usual component height and their footprint is 5.9 x 4.8 mm. All the versions of the Osram Ostar Stage LED are based on the Osram Ostar SMT platform and are suitable for standard solder processes. The chips are fabricated in thin-film technology so that almost all the light produced internally is emitted at the top. This makes the LEDs suitable for use with external optics.