news digest ♦ LEDs in these colour ranges.
GAL phosphors’ light emission characteristics result in higher Colour Rendering Index (CRI) in LED lighting applications. When combined with red nitride or other red phosphors, arrangements also covered by these patents, CRIs up to 98 (out of 100) have been demonstrated.
situations and positions of other road users.
The new variant of the Osram Ostar Headlamp Pro LED is the first multi-chip LED specifically developed for Advanced Forward Lighting Systems (Picture: Osram)
Thanks to LED technology, AFS can be implemented more simply than before because no mechanical assemblies are required to move parts of the headlight or the complete headlight.
“By using our GAL phosphors, LED solutions may be designed for efficient performance at CRIs greater than 90,” says Yi-Qun Li, Chief Technology Officer at Intematix. “This technology is instrumental to meeting new standards like California’s Quality LED Lamp Specification.”
GAL phosphors also provide up to 95 percent lumen maintenance at 200°C phosphor temperature, enabling LEDs of all types, including mid-power LEDs, to operate at higher output and efficacy. The products are also versatile design tools for LEDs used in displays like TVs and tablets.
Even more intelligent headlights from Osram
The new variant of the III-nitride based LED Osram Ostar Headlamp Pro enables the simple implementation of Advanced Forward Lighting Systems
Advanced Forward Lighting Systems (AFS), meaning headlight systems that for example adapt their illumination direction to the direction of the bend when driving through curves, can now be even more simply realized by automotive producers,
Osram Opto Semiconductors from Regensburg, Germany says it has developed the new Osram Ostar Headlamp Pro which is the first specific LED component for this particular implementation. The five chips of the new multi-chip LED can be individually controlled and thus flexibly switched on and off according to the driving
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www.compoundsemiconductor.net October 2013
With LEDs such as the new Osram Ostar Headlamp Pro, the individual chips are specifically switched on and off via intelligent control. The control utilises sensors and electronic components for high beam light without glare by flexibly concealing areas within the light cone of the headlight according to the specific driving situation and with dynamic adaptation to the positions of other road users.
It is also thanks to LED that adaptable cornering light and spot light can be easily implemented for illuminating possible obstacles at the edge of the carriageway.
The new Osram Ostar Headlamp Pro is claimed to be the first LED specifically for AFS Multi-chip LEDs with higher performance classes are needed for use in headlights, and the Osram Ostar Headlamp LED range features high performance-capable technology, homogeneous luminance and temperature stability. It is therefore especially suitable for high power applications.
This is the reason why LEDs of this family have been used since 2008 for various automotive lighting functions. “Osram Ostar Headlamp Pro is now the first LED specifically developed for use in AFS. Its five chips each with one square millimeter can be controlled individually, forming the basis for intelligent light solutions,” explains Peter Knittl, responsible for LED Automotive Marketing at Osram Opto Semiconductors.
Optimal vision for vehicle drivers
“Intelligent headlight systems with our light emitting diodes give car drivers optimal vision even on the edges of roads or with approaching vehicles, offering better
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