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HSChapter 90
U.S. imports of unmounted optical lenses, prisms, mirrors & other optical elements (non-spectacle) (HS 900190) totaled $55.7M in April 2026, traded with 54 countries.
Importers of Unmounted Optical Lenses, Prisms, Mirrors & Other Optical Elements (Non-Spectacle) paid $7.9M in duties in April 2026 — an effective duty rate of 15% on $51.5M 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 $55.7M in April 2026 ran 12% above the year-to-date monthly average of $49.9M.
Last updated: April 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.
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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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 9001909000 | OPTICAL ELEMENTS, UNMOUNTED, NESOI | $29.3M | 16.56% | $4.4M |
| 9001904000 | LENSES, UNMOUNTED, NESOI | $17.3M | 14.75% | $2.4M |
| 9001906000 | MIRRORS, UNMOUNTED, NESOI | $5.9M | 12.88% | $712K |
| 9001905000 | PRISMS, UNMOUNTED, NESOI | $3.1M | 12.13% | $371K |
| 9001908000 | HALFTONE SCREEN FOR ENGRAVING/PHOTOGRAPHIC PROCESS | $106K | 14.04% | $15K |
OPTICAL ELEMENTS, UNMOUNTED, NESOI
LENSES, UNMOUNTED, NESOI
MIRRORS, UNMOUNTED, NESOI
PRISMS, UNMOUNTED, NESOI
HALFTONE SCREEN FOR ENGRAVING/PHOTOGRAPHIC PROCESS
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 9001907000 | OPTICAL ELEMENTS OF ANY MATERIAL, UNMOUNTED, NESOI | $64.7M |
| 9001901000 | LENSES, PRISMS, AND MIRRORS, UNMOUNTED, NESOI | $25.1M |
OPTICAL ELEMENTS OF ANY MATERIAL, UNMOUNTED, NESOI
3.8M no
LENSES, PRISMS, AND MIRRORS, UNMOUNTED, NESOI
1.9M no
INSTR & APPL F MEDICAL SURGICAL DENTAL VET, NESOI
HS 901890
MED NEEDLES. NESOI, CATHERERS ETC AND PARTS ETC
HS 901839
ARTIFICIAL JOINTS & PARTS & ACCESSORIES THEROF,NES
HS 902139
ELECTRO-DIAGNOSTIC APPARATUS NESOI, AND PARTS ETC.
HS 901819
OZONE,OXYGEN,ETC THERAPY, RESPIRATION APPARATUS,PT
HS 901920
MEAS CHECKNG INSTRUMENT & MACH, NOT OPTICAL, NESOI
HS 903180
| State | Imports | Exports | Balance |
|---|---|---|---|
| California | $15.6M | $19.9M | +$4.2M |
| Illinois | $3.3M | $14.8M | +$11.4M |
| New Jersey | $4.7M | $13.1M | +$8.4M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NEW ORLEANS, LA | $8.7M | $19.4M | +$10.7M |
| CLEVELAND, OH | $6.5M | $16.2M | +$9.7M |
| ANCHORAGE, AK | $11.8M | $7.3M | -$4.5M |