Nylon Lenses vs. Other Common Lens Materials

Nylon Lenses vs. Other Common Lens MaterialsPropertiesNylon LensesOrdinary Resin Lenses (CR-39)PC Lenses (Polycarbonate)High Refractive Index Resin Lenses (e.g. 1.67, 1.74)Impact ResistanceExcellentAverageExcellent (Strongest)GoodWeightLightHeavier (Low Refractive Index)LightVery Light (Same Degree)Abbe Number (Optical Clarity)High (42-46+)Highest (Approx. 58)Low (Approx. 30)Low (32-42)Scratch ResistanceExcellentPoor (Needs Hardening)Poor (Must Be Hardened)Average (Needs Hardening)PriceHighCheapModerateHigh - Very HighSimple Summary Comparison: Compared with CR-39 resin sheets: nylon outperforms in impact resistance, wear resistance and lightness, and has good optical performance as well, but it is more expensive. When it comes to impact resistance, both materials are extremely strong. However, the Abbe number of nylon lenses is much higher than that of PC lenses, which means that nylon lenses offer superior visual clarity and color fidelity compared to PC lenses. The main advantage of PC lenses is their lower price and 100% UV protection. Compared with high refractive index lenses: For myopia of moderate degree or less, nylon lenses have an advantage in optical clarity. For high myopia, high refractive index lenses are irreplaceable in terms of being "thin", but chromatic aberration will be more obvious.