Osram Opto Semiconductors has come out with new Ostar Stage LEDs. The Ostar Stage LEDs have a flatter profile and provide the basis for compact spotlights with an extremely narrow beam and high luminance. The company says that these LEDs are ideal for moveable stage lights, known as moving heads, which provide powerful light beams for rock concerts and other impressive lighting arrangements. Instead of the usual lens, the Ostar Stage LEDs have a flat glass cover with an anti-reflective coating for a much flatter profile. It is now only 1.23 mm high – one quarter of the usual height. Spotlights can therefore be made much more compact.
The glass cover on the new LEDs has been optimized for injecting the light into lens systems. Its etendue (the emission angle/area ratio of the emitting light surface to the projected light surface) in conjunction with customer optics enables 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. This optimum bundling of the light increases the luminance of the spotlight also by a factor of 2.