Best plastics for eyewear lenses
Four polymers dominate the lens market: CR-39 (allyl diglycol carbonate) for prescription optics, PC for impact and safety, Trivex for a balance of clarity and toughness, and PMMA for low-cost sunglasses. Refractive index, Abbe number and impact define the trade-offs.
What to look for
- Light transmission ≥ 90 %
- Impact resistance to ANSI Z87.1 (safety) if required
- Compatible with anti-scratch, anti-reflective and photochromic coatings
- Refractive index / Abbe number matched to the prescription range
Top materials for best plastics for eyewear lenses
- #1PolycarbonatePolycarbonate
A transparent, high-impact engineering plastic used in glazing, electronics and safety equipment.
- #2Acrylic (PMMA)Poly(methyl methacrylate)
A rigid, glass-clear thermoplastic offering excellent UV resistance and optical clarity.
- #3PC/ABS BlendPolycarbonate / Acrylonitrile Butadiene Styrene Blend
Combines the impact strength of PC with the processability of ABS.
- #4Glass-Filled PA11Polyamide 11, Glass Fiber Reinforced
Good balance of stiffness, toughness, and dimensional stability.
- #5Allyl Resin for CastingAllyl Resin
Good clarity, hardness, and dimensional stability, suitable for optical applications.
- #6PC FDM FilamentPolycarbonate Filament for FDM
Extremely strong and impact-resistant filament with high heat resistance, suitable for demanding applications.
- #7rPC TransparentRecycled Polycarbonate Transparent
Transparent recycled polycarbonate, retaining high impact strength and clarity.