Optical Sensors

Optical sensors convert light signals into electrical signals through the photoelectric effect. Their core components include photosensors (such as photodiodes and CCDs), signal processing circuits, and optical structures. Based on their technical principles, they can be categorized into ambient light sensors, infrared sensors, and lidar sensors, among others. They are widely used in consumer electronics, industrial automation, automotive electronics, and medical devices.

1. What are the Technical Features and Advantages of Optical Sensors?

High Sensitivity: Detects a wide spectral range from ultraviolet to far infrared, with resolution reaching nanowatt levels.

Non-Contact Measurement: Avoids mechanical wear and tear, making it suitable for detecting high-speed moving objects (such as LiDAR for autonomous driving).

Environmental Adaptability: Compensated by optical filters and algorithms, they offer stable operation in extreme temperatures and humidity.

2. What are the Typical Applications of Optical Sensors?

Smartphones: Automatic brightness adjustment (ambient light sensor), under-display fingerprint recognition (optical);

Industry 4.0: Machine vision positioning (line array sensor), laser ranging (TOF sensor);

Healthcare: Blood oxygen monitoring (pulse oximeter), endoscopic imaging (fiber optic sensor).

3. Future Development Trends of Optical Sensors

With the growing demand for AIoT and the Metaverse, optical sensors are evolving towards miniaturization (MEMS technology), multimodal fusion (RGB + infrared + TOF), and low power consumption (quantum dot technology).