According to TrendForce Consulting analysis, as of 2023, the penetration rate of LED headlights in traditional passenger cars worldwide has reached 72%, and in the field of electric vehicles, this rate is as high as 94%; It is expected that by 2024, these two data points will rise to 75% and 96% respectively. With the development trend of digitalization, intelligence, and new energy vehicles, the automotive lighting market is undergoing a transformation from simple lighting functions to more complex intelligent expression needs.

In today's automotive lighting market, in addition to the urgent need for cost control, innovation is also a key driving force for market development. "Recently, at the 12th China Hard Technology Industry Chain Innovation Trend Summit and Hundred Media Forum hosted by EEVIA, Luo Li, Senior Marketing Manager of AMS Osram, said," As a leader in the field of light sources, AMS Osram is fortunate to use photons as a medium to build an interactive bridge between intelligent cars and end users (including drivers, passengers, and road users)

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Figure 1: Luo Li, Senior Marketing Manager of AMS Osram, shares "LED, Light and Intelligence in Intelligent Driving"

Intelligent headlights EVIYOS 2.0, illuminating the front lane

High beam headlights often cause visual interference to the driver, but turning off high beam headlights can also limit the driver's field of view, both of which may affect driving safety. However, the new glare free high beam headlights surprisingly achieve an active ADB effect, automatically turning off the high beam towards the driver's seat and pedestrian's head in a dynamic "cutout" manner during oncoming traffic. While keeping the high beam headlights on, it reduces glare interference to other road users and greatly improves driving safety (see the left figure in the figure below).

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Figure 2: Demonstration of Application Scenarios for AMS Osram EVIYOS 2.0

This is exactly the new experience brought by the AMS Osram EVIYOS 2.0 headlight solution. According to Luo Li's introduction, EVIYOS 2.0 is the industry's first LED that combines light and electronics. On a curved surface of only 40mm2, it "compresses" an astonishing 25600 pixels, and each pixel at the micrometer level can be independently addressed and switched, achieving extremely fine lighting control and leading the development of the industry.

According to different driving scenarios and road conditions, EVIYOS 2.0 can also achieve functions such as welcome projection, lane change light blanket guidance, lane keeping assistance warning (see the right picture in the above figure), and wet road warning, further enhancing driving safety. Among them, the lane changing light blanket that provides auxiliary lighting and warning information through projection is also a popular application scenario with strong consumer perception and easy implementation.

Not only that, the application scope of EVIYOS 2.0 can also be extended to commercial and industrial fields, achieving high-quality dynamic lighting. From the perspective of technical performance indicators such as power, volume, weight, and cost, as well as practical application effects, EVIYOS 2.0 has demonstrated strong competitiveness and is expected to drive the entire lighting industry towards higher levels of intelligence and personalization.

Colorful Atmosphere OSIREE3731i, Linking Emotional Environments

Cars are transforming from a means of transportation to a 'third living space', and the comfort and interactive experience of the in car environment have become a new focus of attention. Light is no longer only used for illumination, but also plays an important role in information exchange and emotional connection. For example, the music rhythm of ambient lights, or prompts that change with driving modes, intelligent recognition of user emotions to adjust brightness and color tones, or issuing prompt signals based on changes in the driving environment outside the car, as well as integrating with intelligent surface technology to create richer application scenarios.

This trend has led to a significant increase in the number of LED particles used in cars. Luo Li pointed out that the number of LEDs in many car models today has exceeded 200, and some even reach over 400. In this situation, car manufacturers or headlight manufacturers face the challenge of finding a balance between cost control and LED quantity. At the same time, how to ensure uniform and harmonious color mixing when using a large number of RGB LEDs, and how to prevent delays or color inconsistencies in LED color changes provided by different suppliers, have also become urgent technical challenges to be solved.

The OSIRE E3731i, an intelligent RGB LED (RGBi) from AMS Osram, is the world's first product based on OSP open architecture that integrates LED and driver in the same package, aiming to address the aforementioned challenges. This RGBi utilizes OSP open architecture, allowing the main control MCU to stably communicate with each LED module through the physical layer of CAN or LIN interface, thereby achieving status monitoring and independent control of each OSIRE E3731i. With a simple twisted pair connection and SPI interface, up to 1000 RGBi can be connected in series. Due to the built-in factory calibration data of current, voltage, color point, brightness, etc. for each RGB LED chip, there is no need for online recalibration to ensure consistent color performance throughout the entire vehicle range, greatly improving the usability and reliability of the system.

According to Luo Li, some OEM customers have embedded intelligent connections between different nodes of the vehicle on their main domain controllers. In addition, based on the OSP architecture, designers can not only connect OSIRE E3731i in series, but also easily plug in SAID independent driver chips and other sensors with I2C communication, such as ambient light sensors, pressure sensors, etc., without damaging the existing system architecture. This approach not only simplifies hardware design, but also facilitates future OTA software updates, which is a disruptive innovation in cabin lighting and opens up new possibilities for the design of smart car interiors in the future.

On the stage of automotive design, taillights/signal lights are increasingly pursuing lightweight, compact, cost-effective and efficient design, as well as OLED like effects, simple information exchange functions, and more attractive shapes. The AMS Osram SYNIOS P1515 brings structural innovation to automotive lighting with its unique side emission and 360 ° radiation characteristics.

Traditional top emitting LEDs require a complex reflective bowl structure, while SYNIOS P1515 can simplify the overall structure in a simple direct manner. Under the premise of maintaining the same brightness and uniformity, using SYNIOS P1515 can reduce the number of LEDs and their driving circuits by increasing the spacing between LED layouts, thereby reducing system costs. For example, Luo Li stated that through the analysis of a typical case of a tail through lamp, it was found that the number of LED particles in this scheme can be reduced by up to 2/3, and the overall system cost can be significantly reduced.

Meanwhile, SYNIOS P1515 can also achieve a surface emitting effect similar to OLED. Traditional taillight/signal light designs typically require a depth of 20-30mm, while using SYNIOS P1515 can compress the depth to 5mm or even below. This makes the design of car taillights/signal lights more concise and smooth, greatly enhancing design flexibility.

In addition, Luo Li emphasized that when using a matrix layout, SYNIOS P1515 can also achieve local dimming, thereby supporting dynamic display and display of specific patterns. By setting optical grilles between LEDs to regulate the light path, the display contrast can be further enhanced, giving greater freedom to pattern design and greatly enriching the expressive power of the lighting system.

As Chinese cars gradually shift from followers to leaders, AMS Osram is actively integrating into this transformation and deeply cultivating the Chinese market. By establishing technical support centers in China to support the entire Asia Pacific region and forming local product development teams, AMS Osram strives to achieve cost optimization and efficiency improvement through technological innovation and localized support.

In the future development of automotive lighting, technological innovation has always been the core driving force behind the industry's progress. As Rory said, "AMS Osram has always been committed to bringing smarter, safer, and higher quality lighting experiences to the automotive industry through continuous technological innovation. Looking ahead, we will continue to explore the unknown, constantly surpass ourselves, and make 'light' a link between people and cars, and between cars and the outside world

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Name: John Chen

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