In 2026, the global consumer electronics and automotive optoelectronic industry continued to iterate, and high-precision optical glass components such as AR/VR ultra-thin lenses, automotive lidar sensing glass, medical endoscopic optical lenses and 3D curved display glass achieved large-scale popularization. Different from ordinary architectural glass and industrial glass, high-end optical glass has ultra-high requirements for light transmittance, surface flatness and imaging accuracy, and the molding quality is completely determined by the precision and surface finish of graphite molds.
In the past, ordinary fine-grain graphite molds with surface roughness above Ra 50nm can meet the production needs of traditional ordinary optical lenses. However, the new generation of ultra-high-definition optical equipment requires the surface roughness of glass molding molds to be controlled below Ra 10nm, and the mold cavity dimensional accuracy to reach micron-level. Traditional graphite molds are prone to surface oxidation, micro-pore defects and insufficient flatness after multiple molding cycles, resulting in lens surface scratches, light spots and imaging distortion, which can no longer adapt to the production of high-end optical products.
At the same time, the diversified and personalized development of optical glass shapes has increased the processing difficulty of graphite molds. Free-form surface lenses, aspherical lenses and special-shaped curved glass require graphite molds to have complex curved surface structures and ultra-high assembly accuracy. Ordinary processing technology is easy to produce burrs, edge collapse and structural deformation, resulting in a sharp increase in product defect rate. Customized ultra-precision polished graphite molds have become the rigid demand of the global high-end optical glass industry.
Industry market data shows that the global high-end optical graphite mold market will grow at a CAGR of 8.3% from 2026 to 2032, far higher than the average growth rate of the traditional graphite industry. The market share of low-precision ordinary molds is gradually shrinking, and high-precision, long-life and anti-oxidation polished graphite molds are occupying the mainstream market. The industry competition is concentrated in the precision processing capability and surface polishing technology of graphite molds.
Huixian Jincheng Abrasive & Graphite Mold Factory is a leading professional manufacturer of high-end optical graphite molds in China, with 42 years of precision mold customization experience. In response to the 2026 global optical glass industry upgrading trend, the company fully upgraded ultra-precision processing and nano-level polishing equipment, and took the lead in realizing mass production of optical-grade ultra-smooth graphite molds.
The company selects high-purity ultra-fine grain isostatic graphite raw materials, and eliminates internal pores and impurities through multi-cycle vacuum impregnation and high-temperature purification. After professional CNC curved surface processing and nano-level precision polishing, the surface roughness of the mold cavity is stably controlled below Ra 10nm, with no micro-defects and high flatness, which can perfectly replicate ultra-high-precision optical lens structures. Aiming at the problem of easy oxidation of molds in high-temperature molding environment, Jincheng Graphite provides targeted anti-oxidation pretreatment services to extend the service life of optical molds by more than 50%.
At present, Jincheng Graphite's high-precision optical graphite molds are widely used in global AR/VR optical equipment, automotive intelligent sensing glass and high-end medical optical instrument manufacturing, helping downstream enterprises greatly improve product yield and optical performance. With the continuous upgrading of global intelligent optoelectronic equipment, the company will continue to optimize mold precision and surface treatment technology, and provide high-quality customized graphite mold solutions for the global high-end optical glass industry.
