- Raw Materials:Lenses are made from hydrogel or silicone hydrogel polymers, allowing oxygen permeability and offering flexibility.
Forming Methods
- Spin Casting: Liquid plastic is poured into molds and spun at high speed, forming the lens curvature as required.
- Lathe Cutting: Solid polymer discs are precisely cut using CNC machines according to the optical prescription.
Cosmetic Additions (for Colored Lenses)
- Patterns and colors are printed to mimic the iris.
- The color layer is coated with a protective layer to prevent direct contact with the eye.
Sterilization & Packaging
- Lenses are sterilized using heat or special solutions.
- Each lens is packaged in a container with saline solution for preservation.
Manufacturing Prescription Glass Lenses
- Measurement:Accurate measurement of farsightedness, nearsightedness, and astigmatism.
- Material Selection:Organic plastic, polycarbonate, or glass.
- Shaping & Grinding:Lenses are shaped and ground precisely according to the optical prescription.
Polishing & Coating
- Polishing the surface to remove roughness.
- Applying coatings: scratch-resistant, anti-reflective, and UV protection.
- Cutting & Assembly:Lenses are cut to fit the eyeglass frame precisely.
Common Steps for All Lenses
- Quality Inspection: Specialized equipment is used to ensure visual quality, accurate measurements, and eye comfort.
