Sapphire Prism
A right-angle prism crafted from synthetic sapphire (aluminum oxide), ideal for UV and harsh environment optics in spectroscopy and defense applications. Classified under HTS 9001.90.90.00 as an unmounted optical element of non-glass material, prized for its hardness and transmission properties. Delivered unmounted for custom system integration.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made of synthetic quartz or crystal
Specific crystals like quartz have dedicated subheadings in 9001.30, separating them from general 'other' optical elements.
If for laboratory technical uses, not optical
Chapter 90 note excludes ceramic wares for lab use; non-optical sapphire pieces go to Chapter 69 refractories or ceramics.
If parts solely for laser instruments
Per Chapter 90 note 2, parts dedicated exclusively to Chapter 90 machines classify with the apparatus, not as elements.
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Import Tips & Compliance
• Include material analysis reports proving synthetic sapphire composition to distinguish from glass or ceramic equivalents
• Label clearly as 'optical prism' with specifications to prevent reclassification as industrial ceramic under Chapter 69
• For high-value items, obtain advance rulings on 'optical element' status to mitigate customs disputes
Related Products under HTS 9001.90.90.00
Fused Silica Plano-Convex Lens
A high-precision plano-convex lens made from fused silica, used in laser systems and optical instruments for focusing light. It falls under HTS 9001.90.90.00 as an unmounted optical element of a material other than unworked glass, designed for precise beam manipulation. The lens is supplied individually without mounting for integration into various optical assemblies.
Polymer Optical Fiber Bundle
A bundle of polymer optical fibers used for illumination and image transmission in endoscopes and sensors. It qualifies under HTS 9001.90.90.00 as optical fiber bundles distinct from electrical cables of 8544, unmounted for device assembly. Essential for medical and industrial imaging applications.
Calcium Fluoride Window
An unmounted flat optical window made of calcium fluoride (CaF2) for infrared spectroscopy and laser systems. Falls under HTS 9001.90.90.00 as a non-glass optical element transmitting in UV-IR spectrum. Used unprotected in optical paths requiring high purity.
Polarizing Film Sheet
Sheets of polarizing material, typically PVA with iodine crystals, used in LCD displays and sunglasses. Classified in HTS 9001.90.90.00 as plates of polarizing material, unmounted for lamination into devices. Controls light polarization in optical systems.
Germanium Meniscus Lens
A meniscus lens made from germanium crystal for thermal imaging and CO2 laser optics in the 8-14μm IR range. HTS 9001.90.90.00 covers this unmounted semiconductor optical element. Critical for night vision and FLIR systems.
Silicon Aspheric Lens
Precision aspheric lens molded from optical-grade silicon for mid-IR applications like FTIR spectrometers. Under HTS 9001.90.90.00 as unmounted non-glass optical element with complex surface for aberration correction. Used in analytical instruments.