Compact 5-in-1 automotive optical sensor for rain, light, sunlight, humidity, and HUD brightness control with LIN bus communication and car-grade durability
Compact 5-in-1 automotive optical sensor for rain, light, sunlight, humidity, and HUD brightness control with LIN bus communication and car-grade durability

Five-in-One Environmental Sensor for Smart Cockpit Systems

Multi-functional optical sensor for intelligent vehicle environment sensing—enabling automatic lighting, wipers, climate control, and HUD brightness adjustment with car-grade reliability.

Function Communication Power Supply
5-in-1 (Rain, Light, Sunlight, Humidity, HUD) LIN Bus 12V DC
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Compact 5-in-1 automotive optical sensor for rain, light, sunlight, humidity, and HUD brightness control with LIN bus communication and car-grade durability

Parameter Specification
Sensor Type Multi-functional Optical Sensor (Rain, Light, Sunlight, Humidity, HUD)
Functions Rain Detection, Ambient Light, Sunlight Intensity, Relative Humidity, HUD Brightness Control
Communication LIN Bus
Power Supply 12V DC
Operating Voltage 9–16 VDC
Operating Temperature -40°C to +125°C
Storage Temperature -40°C to +130°C
Current Consumption <50 mA (typical)
Output Signal Digital via LIN protocol
Protection Reverse polarity, short-circuit, overvoltage
Housing Material ABS+PC (UV-resistant)
Mounting Method Spring clip or adhesive mounting (customizable)
Dimensions Compact circular design, Ø40 mm × H25 mm (typical)
Compliance RoHS, REACH, ISO 7637-2, AEC-Q100 Grade 1
Safety Rating ASIL-B compliant
Platform Modular design, supports function customization

The Automotive Rain, Light, Sunlight, Humidity & HUD Sensor is a high-performance, multi-functional optical sensor designed to enhance driver comfort, safety, and convenience in modern vehicles. This compact, integrated unit combines five critical environmental sensing capabilities into a single module: rain detection, ambient light measurement, sunlight intensity monitoring, relative humidity sensing, and Head-Up Display (HUD) brightness regulation. Installed typically on the windshield or front panel, it enables intelligent automation of key vehicle functions such as automatic headlights, wiper activation, climate control adjustments, auto-defogging, tunnel recognition, and adaptive HUD brightness—delivering a seamless, hands-free driving experience.

The sensor utilizes advanced optical sensing technology with high-sensitivity photodiodes and infrared emitters to detect water droplets on the windshield, measure ambient illumination levels, assess direct sunlight exposure, monitor cabin humidity, and adjust display brightness based on external conditions. Its intelligent algorithms support self-learning capability for rain detection, allowing the system to adapt to different weather patterns and user preferences over time. The device meets automotive-grade standards for durability, including functional safety (ASIL-B), electromagnetic compatibility (EMC), and resistance to vibration, temperature cycling, and moisture ingress.
With LIN bus communication support, this sensor integrates seamlessly into existing vehicle networks, reducing wiring complexity and enabling efficient data exchange with the body control module (BCM) and instrument cluster. It operates on a standard 12V DC power supply and features a compact design with optional spring clip mounting for easy installation in various vehicle architectures. The modular platform architecture allows customization of functionality—such as disabling certain sensors or adding new features—making it ideal for OEMs seeking flexible, scalable solutions across multiple vehicle platforms.

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