• Super - high Precision Mold Core Processing

  Yighen Ultra Precision Limited primarily caters to customers ordering plastic lens mold cores. Our focus on hardened stainless - steel materials, known for their high precision and top - quality, has earned our mold core products wide acclaim from customers. Additionally, we offer soft - material products for optical component users (such as aluminum and copper reflectors) to meet diverse customer needs. Our clientele spans across Asia, America, Europe, and Oceania.

   

  Our company manufactures a diverse range of mold cores, including Spherical, Aspheric, Fresnel Lens, Freeform Surface, Microlens Array, Multiplanar, Diffraction, Matrix (Lens array), and Hybrid Molds, catering to various technical requirements of our customers. Our mold cores are extensively used in mobile phone camera lenses, laser mice, flashlights, digital read - write heads, optical fiber connectors, biomedical applications, and various optical sensor fields, endowing customers' products with excellent optical performance and high stability.

   

  Regarding the precision of mold core surface processing, our company has independently developed "Injection Mold Shrinkage Error Compensation Software". We perform surface correction prior to processing based on customer requirements, significantly enhancing the injection - molding effect and bringing about a remarkable improvement in product quality for our customers. Most of our mold cores are produced using Direct - Cutting Steel Technology, ensuring durability even in a 300 - degree - Celsius high - temperature environment, making them highly suitable for high - performance plastic injection - molding production. By optimizing the production cycle and boosting efficiency, we have substantially reduced our customers' production costs.

   

  Our ultra - precision machining capabilities enable us to handle mold cores with a diameter of less than 30mm, with most having a diameter of less than 8mm, and the smallest size being even less than 1mm. The precision can reach a sagittal height - to - aperture ratio of 0.4, with a surface roughness (Ra) of less than 8 nm, and the form accuracy controllable within 0.2 microns (PV value), thus ensuring the high - precision needs of our customers.

   

• Low - cost Fast Verification Processing Service

  We also offer rapid processing verification services for optical components. Employing ultra - precision machining, our equipment combines Single Point Diamond Turning (SPDT) with a powerful process - enabling system, allowing for one - step molding. This processing method utilizes our independently - processed single - crystal diamond tools, which are ultra - hard and highly precise. We conduct high - precision machining on specific optical resin blocks (such as PMMA, PC, COP, and other types of optical resins) to achieve superior optical surface quality. This processing approach typically offers the following advantages:

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  • Reduced Tooling Costs and Time: For small - batch production or prototype development, direct cutting bypasses the high costs and long lead times associated with mold fabrication. For customers with small - batch or specialized requirements, direct cutting is more cost - effective (a few thousand yuan) and flexible (1 - 2 weeks).
  • Flexibility and Customization: Direct cutting facilitates easier customization and the creation of complex structures, such as aspheric and diffractive structures, which are ideal for product development that demands multiple iterations and rapid validation. This is especially beneficial for laboratory customers or those with specialized applications, providing a high degree of flexibility.
  • High - Precision Assurance: Since the cutting process does not involve the injection - molding process, factors like material shrinkage are eliminated, enabling the product to achieve extremely high precision and surface quality more easily. This processing method is particularly well - suited for applications that demand extremely high optical surface accuracy, such as scientific research, medical equipment, or high - end imaging systems.
  • Avoidance of Heat Treatment Effects: Injection molding requires heating the plastic, whereas cutting occurs at room temperature. The optical resin remains more stable during the cutting process, avoiding stress and deformation that may result from temperature fluctuations, thus ensuring higher optical surface accuracy and consistency.
  • Compatibility with Innovative Materials: Some new optical resin materials exhibit poor performance at high temperatures. Through direct cutting, we can prevent the degradation of material properties, ensuring that the optical properties of the material remain intact during processing.

Nano - scale Ultra - Precision Optical Processing