Osram Opto Semiconductors has added the Osram Ostar Stage LEDs. The LEDs
with a low profile design and a glass cover provide 390 lumens in cold white
(10000K) and 210 lumens in warm white (2700K). The low profile and high
brightness, along with the anti-reflective coating provide the basis for
compact spotlights with an extremely narrow beam.
According to the company, these LED packages with four LED di in each are
ideal for use in moving head spotlights on stage, for booth lighting at trade
fairs, and for architectural lighting. The LED achieves a high color rendering
index of 94 for warm white and 74 for cold white.
The LED measures 5.9 mm x 4.8mm, and thanks to a glass cover the package
measures just 1.23 mm high. Instead of the usual lens, the LEDs have a flat
glass cover with an anti-reflective coating, making them ideal for injecting
the light into lens systems.
The Osram Ostar Stage is based on the Osram Ostar SMT platform and is
therefore suitable for standard solder processes. The company says that the
chips are fabricated with thin-film technology so that almost all the light
produced internally is emitted At a typical value of 1.8 K/W the thermal
resistance is very low. In constant use the LEDs will last for more than 50,000
Osram says that the device’s 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 factor 2 than for spotlights based on
plastic-encapsulated LEDs. Consequently, the luminance of the spotlight is
greater by factor 2.
The LEDs can be used in spotlights of any size, from small stage spots to
large moving heads. Wolfgang Schnabel, LED Marketing Industrial Applications at
Osram Opto Semiconductors, said, “Three versions of the Osram Ostar
Stage LED are available, the Multi Color (RGBW), the pure white and now the
tunable white. The range of applications is therefore now greater than ever
before. With so many colors and configurations lamp designers have a virtually
unlimited set of options.”
The company will be showcasing the Osram Ostar Stage LED at Prolight + Sound
2013 from April 10 to 13 in Frankfurt.Low-cost LEDs for saving energy and