Optical Coatings — LensGuard Series
LensGuard® 505 — Optimum Eyewear Hardcoat
Non-tintable optimum eyewear hardcoat for polycarbonate substrates. LensGuard® 505 delivers a 7.0 Bayer ratio with 10 psi steel wool scratch resistance — an optimized balance of abrasion and scratch performance.
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Technical Data (PC)
| Test | Result |
|---|---|
| Bayer Ratio (a) | 5.50 |
| Steel Wool Scratch Resistance (b) | 4 psi |
| Taber Abrasion ASTM D-1044 (c) 100 cycles | 3.40 |
| Taber Abrasion ASTM D-1044 (c) 500 cycles | 5.20 |
| Pencil Hardness ASTM D-3363 (d) | F |
(a) 500g of abrasive media, 600 cycles
(b) Steel wool #0000, 5 rotations, no scratch
(c) 500g, CS-10 wheels
(d) Mitsu-Bishi Hi Uni pencils, Wolf-Wilburn Method — 1000g @ 45°