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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If semiconductor wafers, not lenses
Raw Ge wafers are Chapter 85 diodes; ground/polished into lenses become optical elements.
If mounted in objective assemblies
Unmounted lenses stay 9001; instrument-mounted become 9002 assembled optics.
If dedicated laser parts
Chapter 90 note 2: parts solely for lasers (9013) classify with apparatus.
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Import Tips & Compliance
• ITAR/EAR compliance essential; declare if dual-use for defense applications with proper licenses
• Refractive index data (4.0 at 10μm) proves IR optical function vs semiconductor wafer
• Anti-reflection coating status affects value declaration but not base classification
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.
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.
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.
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.