Porro Prism Pair for Binocular Optics
A pair of mounted Porro prisms that provide upright images in binocular telescopes by folding the optical path. They are essential components for binocular vision and image orientation. This prism pair is classified under tariff item 9002.90.00 as mounted optical elements for binocular instruments.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the prisms are imported as part of binoculars
Binoculars are classified under heading 9005, and their parts follow.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the prisms are documented as mounted and intended for binoculars
• If imported with the binoculars, they may be classified as parts under heading 9005
• Provide clear descriptions of the prism pair's function to avoid misclassification
Related Products under Tariff item 9002.90.00
Alignment Telescope Mirror
A precision flat mirror mounted for bore sighting in alignment telescopes used in machine tool setup. It serves as a reference for optical alignment in industrial applications. This mounted mirror is classified under tariff item 9002.90.00 as a fitting for optical instruments.
Amici Roof Prism for Telescopes
A mounted Amici roof prism designed for erecting images in spotting scopes and telescope eyepieces. It folds the optical path to provide an upright image, making it an essential optical element for astronomical instruments. This prism is classified under tariff item 9002.90.00 as a mounted optical element for instruments or apparatus.
Anamorphic Prism Pair for Laser Beam Shaping
A matched pair of mounted cylindrical prisms used to reshape elliptical laser beams into circular profiles in diode laser systems. These prisms are anti-reflection coated and serve as critical components in laser optical instruments. They are classified under tariff item 9002.90.00 as mounted prisms for optical apparatus.
Beam Expander Mirror Set
Two concave-convex mirrors mounted in a barrel for expanding laser beams in material processing optics. They are essential for beam expansion in laser systems. This mirror set is classified under tariff item 9002.90.00 as mounted mirrors for optical apparatus.
Corner Cube Prism for Retroreflectors
A mounted corner cube prism used as a retroreflector in survey targets and laser ranging applications. It returns light parallel to its incidence, making it essential for precision measurement instruments. This prism falls under tariff item 9002.90.00 as a mounted optical element for instruments.
Dichroic Beam Splitter Mirror
A thin-film dichroic mirror mounted on a substrate for separating wavelengths in fluorescence microscopes or multi-laser systems. It enables precise wavelength selection in optical instruments. This mounted mirror is classified under tariff item 9002.90.00 as a specialized optical element.