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SITCSection 8
U.S. imports of mounted optical filters (SITC 88433) totaled $3.6M in April 2026, traded with 31 countries.
Importers of Mounted Optical Filters paid $605K in duties in April 2026 — an effective duty rate of 18% on $3.3M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataOptical filters set into mechanical mounts—including bandpass, longpass, shortpass, neutral density, and polarizing filter assemblies—serve critical roles in scientific instrumentation, machine vision, fluorescence microscopy, laser systems, and broadcast imaging. The 'mounted' condition distinguishes these from polarizing sheet stock or unmounted filter glass classified elsewhere. Precision interference filters for spectroscopy and biomedical imaging represent the high-value end of this trade, while photographic screw-mount filters occupy the consumer tier.
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A mounted optical filter is specifically designed to selectively transmit, reflect, or absorb light within defined wavelength ranges—its primary function is spectral or intensity selection rather than image formation or beam shaping. Lenses, prisms, and mirrors that form or redirect beams are classified as other mounted optical elements. Product documentation specifying the filter's spectral transmission curve and intended function is the most reliable evidence for classification.
Yes, consumer photographic filters—UV, polarizing, neutral density, or color-correction filters in screw or bayonet mounts designed for camera lenses—fall within this heading as mounted optical filters. The heading covers both precision scientific filters and consumer photographic accessories, with the mounted condition being the common requirement.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | $1.1M | $994K | -$112K |
| GERMANY | $443K | $1.5M | +$1.1M |
| JAPAN | $633K | $866K | +$233K |
| UNITED KINGDOM | $180K | $1.1M | +$964K |
| CANADA | $155K | $932K | +$777K |
Monthly import values over time