Anamorphic Prism Pair
An anamorphic prism pair consists of matched wedge prisms used to circularize elliptical laser beams by expanding or compressing the beam in orthogonal directions. These are unmounted individual prisms commonly used in laser diode systems. This product falls under tariff item 9001.90.00 as unmounted optical prisms.
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 |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the prisms are mounted in a frame
Mounted optical elements fall under heading 9002.
If imported as part of a laser system
Prisms for specific apparatus may be classified with that apparatus.
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
• Import the prisms as individual unmounted elements to stay under 9001.90.00; if they are pre-assembled into a holder, classification may change
• Clearly describe the wedge angles and coating on the commercial invoice
• Be aware that if the pair is sold as a set with a mount, it may be classified under heading 9013
Related Products under Tariff item 9001.90.00
Abbe-Koenig Prism
An Abbe-Koenig prism is a Porro-type prism with air-spaced roof surfaces that provides total internal reflection while maintaining high light transmission. It is an unmounted optical prism used in high-performance binoculars and other precision optical instruments. This product falls under tariff item 9001.90.00 as an unmounted optical element of any material.
Amici Roof Prism
An Amici roof prism is a compound prism that combines right-angle reflection with roof prism functionality to erect images in compact optical instruments. It is an unmounted optical prism featuring both total internal reflection and image erecting properties. This product falls under tariff item 9001.90.00 as an unmounted optical element.
Brewster Prism
A Brewster prism is cut at Brewster's angle to minimize reflection losses for p-polarized light, making it ideal for laser cavities. It is an unmounted dispersion prism optimized for specific polarization states. This product falls under tariff item 9001.90.00 as an unmounted optical prism.
Calcium Fluoride Unmounted Lens
An unmounted calcium fluoride lens for excimer lasers and spectroscopy, offering excellent UV transmission down to 130nm. It is an unmounted optical element of crystalline material, falling under tariff item 9001.90.00.
Corner Cube Prism
A corner cube prism is a solid glass prism with three mutually perpendicular faces that retroreflects incident light parallel to itself regardless of the angle of incidence. It is an unmounted optical prism used in surveying, alignment, and laser applications. This product falls under tariff item 9001.90.00 as an unmounted optical element.
Dove Prism
A Dove prism is used for image rotation in optical systems, featuring a 45-degree cut angle and total internal reflection on elongated faces. It is an unmounted optical prism for precision image manipulation. This product falls under tariff item 9001.90.00 as an unmounted optical prism.