|New Ostar LED|
The six-chip version produces 420 lumens with a lens and 300 lumens without a lens, in each case at an operating current of 700 mA and an output of 15W. Osram says that the lensed version is brighter than a 20-watt (W), low-voltage halogen lamp.
Four-chip versions produce 280 lumens with a lens and 200 lumens without a lens, in each case at an operating current of 700 mA and an output of 10W.
A specially developed hemispherical lens now is part of the standard equipment and improves the effi-ciency with which the light is emitted without affecting the beam characteristics.
Osram says that the latest Ostar LED is ideal for a wide variety of general lighting applications, includ-ing individual workplace lighting, reading lights, residential and commercial lighting and even specialty flashlights.
“The new Ostar’s high luminous intensity has earned a place in applications that up to now have been open only to conventional light sources,” said Ellen Sizemore, North American director, LED and IR Products Group, OSRAM Opto Semiconductors. “Our customers now can have an efficient, long-life, compact alternative to traditional, cumbersome solutions. This type of innovation has the potential to change general lighting for consumer as it currently exists.”
Each Ostar LED contains four or six high-power, thin-film indium gallium nitride (InGaN) chips that emit light only from the top surface, resulting in high chip luminance. This can increase the optical sys-tem efficiency and reduce the size of optics for lighting applications.
The white color is constant from every viewing angle, enabled by placing the phosphor conversion ma-terial directly onto the blue chip.
The Ostar LED can be mounted to lighting fixtures without any soldering, utilizing precision positioning of screw holes, and then mounted to a heat sink with a thermal paste for optimum heat dissipation.