Unmounted Ball Lens
Spherical ball lens of sapphire or glass for fiber optic collimation and endoscopy. Under HTS 9001.90.40.00 as unmounted spherical lens element. Effective numerical aperture approaches 1.0.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If glass spheres not optical
Glass pearls/glass beads exclude to 7016.
If optical fiber bundles containing
Integrated into fiber assemblies classify under 9001.10.
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Import Tips & Compliance
• Sphericity tolerance critical; provide measurement protocol
• Avoid categorization as 'beads' by proving optical specs
• Common in telecom; HTS consistent across materials
Related Products under HTS 9001.90.40.00
Unmounted Powell Lens
Asymmetric Powell lens creating uniform line from Gaussian laser beam for machine vision. Polymer construction, HTS 9001.90.40.00 unmounted specialty lens. Fan angle determines line length.
Silicon Unmounted Lens
Hyper-hemispherical silicon lens for THz/mm-wave imaging, 0.1-2THz transmission. HTS 9001.90.40.00 unmounted semiconductor lens. AR-coated for reduced reflection.
Unmounted Plano-Convex Glass Lens
A plano-convex lens made of optical glass with one flat and one curved surface, designed for focusing light in optical instruments. It falls under HTS 9001.90.40.00 as an unmounted optical lens, other than glass not optically worked, used in lasers and projectors. The lens is precision-ground but not mounted in a frame or housing.
Unmounted Aspheric Polymer Lens
An aspheric lens molded from optical-grade polymer (acrylic), used to minimize spherical aberration in cameras and projectors. Classified under HTS 9001.90.40.00 as an unmounted lens of plastic material, excluding unworked glass. Its non-spherical surface requires precise molding for optical performance.
Fused Silica Unmounted Lens
A high-purity fused silica lens for UV applications in lithography and spectroscopy, unmounted and optically polished. It qualifies under HTS 9001.90.40.00 as an 'other' optical lens material, distinct from unworked glass per chapter exclusions. Ideal for high-transmission in deep UV wavelengths.
Unmounted Double-Convex BK7 Lens
A precision double-convex lens made from BK7 borosilicate crown glass, used in telescopes and microscopes. Falls under HTS 9001.90.40.00 as an unmounted, optically worked glass lens not excluded by chapter notes. Provides symmetrical focusing for imaging systems.