Crown Glass Single Vision Lenses from Japan
Traditional low-dispersion optical crown glass lenses (index 1.52) for everyday single vision correction, available in spherical powers from plano to ±20 diopters. Precision ground and polished for minimal chromatic aberration. Standard classification under HTS 9001.40.00.00 for unmounted glass spectacle lenses.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Specify glass type (Soda-Lime 1.523, Borosilicate 1.517) and verify with refractive index certificates
• Include power verification charts showing ±0.06D sphere, ±0.05D cylinder accuracy
• For high-volume imports, provide melt batch composition analysis ensuring consistent optical properties