I. Project Background

As smartphone camera modules evolve toward higher pixels and slimmer profiles, precise control of camera module height has become a key factor affecting imaging quality.

However, mobile phone camera modules are usually made of various materials, including glass, metal, and plastic, which have very different light reflection properties.Meanwhile, the complex shape of camera modules — featuring curved surfaces, steps, and other structures — further increases measurement difficulty.

Shenshi Intelligent’s SCI01045 confocal chromatic displacement sensor integrates multiple core technological advantages.Based on 0.006 μm resolution and ±0.2 μm linear accuracy, combined with strong material adaptability, 33 kHz high-speed sampling and non-contact measurement, it effectively solves high-precision inspection challenges for lenses of different materials and shapes.

II. Inspection Requirements

• Measurement item: Height measurement of mobile phone camera modules

• Project difficulties: Compatibility with lenses of various materials and shapes

• Required accuracy: 2 μm

III. Application Advantages

Ultra-High Measurement Accuracy

The SCI series confocal chromatic displacement sensors achieve up to ±0.2 μm linear accuracy and 0.006 μm axial resolution.With a micron-level spot diameter, they accurately measure tiny height differences and capture subtle changes in camera module height, meeting the high-precision inspection demands of ultra-slim smartphone camera modules.

Strong Material Adaptability

Equipped with self-developed high-sensitivity algorithms and ultra-bright light sources, the sensor performs reliably regardless of material or shape.It easily handles highly transparent, highly reflective, low-reflective, rough, and complex surfaces, solving the unstable signal issue of traditional methods when measuring light-absorbing materials.

33 kHz High-Speed Sampling

Supported by high-speed CMOS sensors and FPUT algorithms, the SCI01045 offers a sampling frequency up to 33 kHz.It tracks height changes in real time on automated production lines, accurately measuring fast-moving objects and high-frequency vibrations, avoiding missed detections and improving production efficiency.

Large Light-Receiving Angle Design

The SCI01045 features a ±45° light-receiving angle, effectively eliminating measurement blind spots.Even when measuring complex-shaped and curved smartphone camera modules, it accurately scans the true profile and ensures reliable results.

Abundant External Interfaces

Supports RS232 and Ethernet communication, as well as analog and digital I/O outputs.It can be easily integrated with existing automation inspection equipment and production line control systems for fast data transmission and real-time monitoring.

IV. Recommended Sensor from Shenshi Intelligent

The SCI01045 confocal chromatic displacement sensor delivers sub-micron-level high precision, strong material adaptability, and 33 kHz high-speed sampling.It quickly and accurately measures the height of smartphone camera modules, ensuring compliance with strict dimensional tolerances, improving assembly accuracy and quality stability, and providing strong support for the production of high-performance, high-quality smartphones.