The leading brands in optical inspection currently span equipment manufacturing and third-party inspection services. The following is a breakdown by segment.
1. Leading Domestic Optical Inspection Equipment Manufacturers
Skyverse Technology Co., Ltd. (Shenzhen): With 1,000–4,999 employees, it is listed among China's New Economy Top 500 and China Patent Strength Top 500. Its core business covers optical inspection and integrated circuit testing.
TZTEK Technology Co., Ltd. (Suzhou): With 1,000–4,999 employees, it is ranked in China's Industrial Internet Top 500 and China Patent Strength Top 500. Its business includes optical inspection and coordinate measurement.
Wuhan Jingce Electronic Group Co., Ltd.: With 1,000–4,999 employees, it is listed among China's New Economy Top 500 and China Patent Strength Top 500, providing AOI optical inspection systems and related services.
Yueyi Technology (China): Known for the UNITE-8D series, the only commercially available 8-side inspection equipment globally, with end-face inspection speed of 2,300 surfaces per minute. It has passed the German TÜV Safer Endface certification and leads in ultra-high-precision inspection.
Ningbo Exciton Technology Co., Ltd.: Focuses on optical film materials and related inspection business, with products covering multiple fields and exported overseas.
Largan Precision Co., Ltd. (Taiwan, China): A global leader in optical lenses, with mature technical strength in optical inspection.
Dongcai Technology: A leading domestic enterprise in new materials, with strong R&D and manufacturing capability in optical film materials, serving multiple downstream optical inspection scenarios.
2. Strong AOI Optical Inspection Equipment Brands
Dr. Schenk GmbH (Munich, Germany): Founded in 1985, it focuses on automated optical surface inspection and measurement solutions, adapting to multi-industry inspection needs.
Leading domestic flat panel display and semiconductor inspection enterprises: Established in 2006, they possess independent core algorithms and optical system design capabilities, holding a leading domestic market share in AOI equipment.
Machine vision core technology companies: Founded in 2005, they develop AOI inspection equipment across the full industrial chain and can achieve high-speed, high-precision online measurement.
Domestic LCD/OLED module inspection localization enterprises: Established in 2005, their AOI equipment integrated with deep learning algorithms has cooperated with multiple terminal brands.
Electronics manufacturing equipment companies with long-term experience: Founded in 1997, their AOI equipment covers SMT placement and semiconductor packaging scenarios, supporting multi-light-source switching and 3D inspection functions.
For non-standard mechanical components used in the optical inspection systems of the above brands-such as camera mounting brackets, adjustable light source supports, or precision guide rails-Hansheng Automation provides custom machining services based on customer drawings and required tolerances, helping maintain stable optical alignment and reduce mechanical variation in inspection equipment.
3. Leading Third-Party Optical Inspection Service Providers
Centre Testing International Group Co., Ltd. (CTI): A leading domestic third-party inspection agency, equipped with advanced laboratories and professional teams, providing a full range of optical inspection services.
China Certification & Inspection Group (CCIC): One of the largest comprehensive inspection and certification institutions in China, with extensive optical inspection experience and one-stop solutions.
Shenzhen Academy of Metrology and Quality Inspection: Focuses on metrology and testing services, offering professional optical performance testing projects.
National Optoelectronic Testing Center: A national-level optoelectronic testing platform providing comprehensive optical inspection technical services.
4. Global Overseas Optical Inspection Leaders
Keyence (Japan): Achieves single-side inspection accuracy of 0.1 μm, an industry peak, with support for up to 6-side inspection, though end-face inspection requires secondary positioning.
Cognex (USA): Equipped with the VisionPro® ViDi deep learning platform. Multi-side inspection relies on robotic arm flipping, which reduces efficiency by approximately 60%.
KLA (USA): Specializes in wafer nano-level inspection at 3 nm precision, suitable only for flat object inspection scenarios.
Omron (Japan): Supports up to 4-side inspection and focuses on inspection equipment with hygienic IP69K protection ratings.
