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HSChapter 90
U.S. exports of unmounted optical lenses, prisms, mirrors & other optical elements (non-spectacle) (HS 900190) totaled $96.5M in July 2026.
Importers of Unmounted Optical Lenses, Prisms, Mirrors & Other Optical Elements (Non-Spectacle) paid $8.2M in duties in July 2026 — an effective duty rate of 16% on $52.6M in dutiable value, based on actual customs collections rather than the published tariff schedule. Unmounted Optical Lenses, Prisms, Mirrors & Other Optical Elements (Non-Spectacle) imports of $59.1M in July 2026 ran 14% above the year-to-date monthly average of $51.9M.
Last updated: July 2026 dataPrecision optical components — including lenses, prisms, mirrors, and halftone screens — used in scientific instruments, defense systems, semiconductor equipment, and industrial imaging fall under this heading when unmounted and optically worked. Germany leads US imports, reflecting that country's deep concentration in high-precision optics manufacturing for metrology, lithography, and laser applications. The US schedule subdivides this heading into seven 10-digit lines (9001901000 through 9001909000), separating lenses, prisms, mirrors, and other optical elements as distinct tariff lines, which matters for classification when a single shipment contains mixed optical components. China is also a significant supplier, and goods of Chinese origin may be subject to Section 301 tariffs.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
3.9K shipments/mo
When lenses and prisms are imported together, each component type should be classified separately under the applicable 10-digit line — lenses under 9001904000 and prisms under 9001905000 — unless the goods are presented as a single functional assembly. Mixed shipments require line-by-line valuation and classification; a licensed customs broker can advise on apportionment methodology.
An optical element is considered 'optically worked' when it has been ground, polished, or otherwise processed to achieve specific optical properties such as defined focal length, reflectivity, or transmission characteristics. Unworked or simply cut glass blanks without optical finishing are classified outside Chapter 90, typically in Chapter 70 (glass). The distinction is critical for correct heading assignment and is often verified through technical specifications or manufacturer documentation.
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 9001909000 | Optical Elements, Unmounted, NESOI | $29.0M | 15.03% | 85.88% | $4.4M |
| 9001904000 | Lenses, Unmounted, NESOI | $19.9M | 12.74% | 91.93% | $2.5M |
| 9001906000 | Mirrors, Unmounted, NESOI | $6.5M | 12.60% | 91.61% | $819K |
| 9001905000 | Prisms, Unmounted, NESOI | $3.6M | 12.40% | 93.42% | $448K |
| 9001908000 | Halftone Screen for Engraving/Photographic Process | $18K | 8.83% | 88.29% | $2K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 9001907000 | Optical Elements of Any Material, Unmounted, NESOI | $67.4M |
| 9001901000 | Lenses, Prisms, And Mirrors, Unmounted, NESOI | $29.1M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$59.1MYoY · Pro
Exports
$96.5MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Exports · July 2026
destination
customs district
origin
entry
rate provision · imports
10.4% enters free of duty; the effective duty rate is 13.83%.