ams OSRAM (SIX: AMS), a
global leader in optical solutions, introduces new technology which greatly simplifies the
implementation of dynamic, color– and intensity–changing arrays of hundreds of RGB LEDs
in car interior lighting.
The new OSIRE® E3731i RGB LED features a digital core that enables low–latency communication
over a standard serial bus interface with any microcontroller. ams OSRAM has also developed a
new Open System Protocol (OSP) running on the OSIRE® E3731i. Using OSP, any microcontroller
can transmit instructions to modulate brightness and color individually to each LED. OSP is
available for use license– and royalty–free by any car, LED, lighting system or microcontroller
manufacturer.
By using the OSIRE® E3731i LED and OSP, automotive manufacturers can realize novel dynamic
lighting effects in the car interior. Up to 1,000 LEDs can be connected in a daisy chain, controlled
via one microcontroller.
Hermann Senninger, Senior Product Manager of ams OSRAM, said: ‘Dynamic lighting promises to
add value to cars by combining changes in color and brightness with pulsing, breathing or moving
light effects, for decorative or functional purposes. The OSIRE® E3731i and OSP enable dynamic
interior lighting to be implemented with a simpler architecture, fewer components, less wiring and at
lower system cost. These benefits are attracting customers already, and we expect to see the
product deployed in production vehicles soon.’
Intelligence built in to every LED
The development of the new intelligent LED draws on the extensive capabilities of ams OSRAM in
optical technology and IC design and fabrication. The OSIRE® E3731i is a high–performance RGB
LED co–packaged with an IC that features three LED drivers, a serial bus interface supporting the
OSP, a temperature sensor and on–chip memory.
Each intelligent RGB LED is characterized at the factory, and its optical performance data are
stored in the LED’s on–chip memory. This makes it easier for automotive manufacturers to perform
end–of–line calibration of interior lighting systems, and to achieve very high optical uniformity and
consistency across arrays of hundreds of OSIRE® E3731i LEDs.
The OSIRE® E3731i is now qualified to the latest AEC–Q102 Annex 3 standard.
For more technical information, please visit us at at OSIRE® E3731i
For more information: OSIRE® | ams OSRAM (ams–osram.com)
