Classified according to the precision level of the mold, which is the key indicator to distinguish the grade of optical molds.
- Ультрапрецизионные оптические формы
Precision grade: ≤ ±1 μm, surface roughness Ra ≤ 0.001 мкм. Used for manufacturing high-end optical components (например, aerospace optical lenses, semiconductor lithography lenses). The molds are made of high-hardness mold steel (например, SUS440C, SKD11) and undergo precision grinding and polishing.
- Высокоточные оптические формы
Precision grade: ±1~5 μm, surface roughness Ra 0.001~0.01 μm. Suitable for consumer electronic optical components (например, smartphone camera lenses, tablet computer lenses). It balances precision and production cost.
- Стандартные прецизионные оптические формы
Precision grade: ±5~10 μm, surface roughness Ra 0.01~0.1 μm. Used for low-end optical products (например, toy magnifying glasses, ordinary LED light covers) with relatively loose optical performance requirements.