From a system architecture perspective, the imaging experience of smartphones is achieved through the collaboration of three core hardware modules: Camera Module (Capture), Main Control SoC Chip (Compute), and Display Module (Display). The role of the SoC has been detailed previously, and next we will discuss the Camera Module and its key components.
1. Camera Module: A Fusion of Precision Optics and Electronics
The smartphone camera module is a highly integrated micro-optical system, primarily composed of the following core components:
- Optical Lens: Responsible for focusing light, typically made up of multiple plastic or glass lenses;
- Image Sensor (CIS, CMOS Image Sensor): Converts light signals into electrical signals, serving as the cornerstone of imaging quality;
- Voice Coil Motor (VCM): Drives the lens for focusing, achieving fast and precise autofocus;
- Infrared Cut Filter (IRCF): Filters out infrared interference light to ensure accurate color reproduction;
- Additionally, it includes substrates, brackets, connectors, and other structural and electrical components.
The collaborative precision of these components directly determines the clarity, light intake, and response speed of the imaging.
2. Module and Lens Manufacturing: The Rise of Domestic Supply Chains
In the field of camera module assembly, Chinese manufacturers have taken a dominant position globally, with major players including:
- Sunny Optical: The leading module and lens manufacturer in global shipments;
- QTech: Focusing on mid-to-high-end modules, with clients including Xiaomi, OPPO, and vivo;
- O-Film: Previously a core supplier for Apple, now deeply engaged in the Android camp;
- ShineTech, Truly, and others also hold significant shares in the mid-to-low-end market.
In the smartphone lens segment, the technical barriers are higher, presenting a “dual-hero dominance” pattern:
- Largan Precision (Taiwan, China): Long-term leader in high-end lenses, supplying flagship devices for Apple and Samsung;
- Sunny Optical: With cost and mass production advantages, it is rapidly catching up and has become a key supplier for the Android camp.
3. Image Sensors: Global Competition Under High Barriers
Compared to module assembly, image sensors (CIS, CMOS Image Sensor) involve semiconductor manufacturing processes, which have extremely high technical barriers, resulting in a higher concentration in the global market. The current major players include:
- Sony: Long-time leader in the high-end market, dominating flagship cameras for Apple, Huawei, and Xiaomi with its Exmor R/RS series;
- Samsung: Leveraging its IDM integrated advantages, it supplies its Galaxy series and actively expands to external customers;
- OmniVision (OVT): Accelerating domestic substitution after being acquired by Will Semiconductor, continuously breaking into the mid-to-high-end market;
- GalaxyCore: Entering mainstream models with cost-effective CIS, now advancing towards high-end products with over 50 million pixels;
- SmartSens: Starting from security applications, it has recently focused on mobile devices, entering first-tier brand supply chains with technologies like Stacked BSI.
The camera module, as the “first line of defense” in the imaging chain, has its performance ceiling determined by the image sensor, while overall reliability and mass production capability depend on the precision integration capabilities of the module manufacturers. Today, Chinese companies have achieved global leadership in the module and lens segments, and while Sony still dominates the “crown jewel” of image sensors, domestic manufacturers are rapidly closing the gap—this reflects the transition of China’s smart terminal industry from “assembly” to “core technology innovation”.