</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

Silicon Aspheric Lens from Mexico

Precision aspheric lens molded from optical-grade silicon for mid-IR applications like FTIR spectrometers. Under HTS 9001.90.90.00 as unmounted non-glass optical element with complex surface for aberration correction. Used in analytical instruments.

Duty Rate — Mexico → United States

10%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

Import Tips

Provide surface figure specs (λ/4 PV) and MTF data confirming aspheric optical design

Distinguish from silicon wafers via diameter-to-thickness ratios typical of optics

Diamond-turned surfaces must be documented as optical working, not mechanical