This enticing vision of the cabin of the future excited our imagination. For decades, ams OSRAM has been pioneering new technology for automotive lighting. We love to create cool optical technology that brings to life ideas that were once impossible.
In doing this, we benefit from our deep knowledge of the challenges that car makers and their suppliers face. The new use cases for intelligent ambient lighting called for a new type of LED:
- Dynamic color and intensity effects need an RGB LED that responds fast to high-frequency control signals
- For easy integration with common automotive electronics architectures, the LED must be controllable by any microcontroller over a standard serial interface
- High quality of light is an essential feature, so arrays of LEDs must achieve consistent color and brightness uniformity, no matter how hot or cold the temperature
The OSIRE® E3731i (the i stands for ‘intelligent’) was the solution for this demanding set of requirements. This new device draws on the unique breadth of ams OSRAM’s capabilities: optical chip technology, digital and mixed-signal circuit design, and semiconductor packaging. In the E3731i, we have been able to combine highly efficient red, green and blue LED chips with a digital IC (which includes memory, a serial communications block, and a temperature sensor) in a single, compact package.
Alongside the introduction of the E3731i, we have created a new Open System Protocol (OSP), a ‘language’ that enables compatible devices such as LEDs, microcontrollers and sensors to talk to each other over a standard serial bus. The OSP is free for any manufacturer to use, helping to foster a vibrant ecosystem of products and suppliers to support car manufacturers’ visions for the future of ambient lighting.