Lenses
Optical fibers and optical fiber bundles; optical fiber cables other than those of heading 8544; sheets and plates of polarizing material; lenses (including contact lenses), prisms, mirrors and other optical elements, of any material, unmounted, other than such elements of glass not optically worked: > Other: > Lenses
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified 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.
Sapphire Unmounted Lens
A synthetic sapphire (alumina) lens for harsh environments in military optics and wear-resistant scanners. Classified in HTS 9001.90.40.00 as an unmounted optical element of 'any material' other than excluded glass. Offers extreme hardness and scratch resistance.
Unmounted Cylindrical Polymer Lens
A cylindrical lens of optical polycarbonate for line scanning in barcode readers and laser printers. Under HTS 9001.90.40.00 as unmounted plastic lens (not excluded glass). Focuses light into a line rather than point.
Germanium Unmounted IR Lens
An unmounted germanium lens for thermal imaging cameras operating in mid-IR spectrum. HTS 9001.90.40.00 covers this semiconductor optical element as 'other' unmounted lens. AR-coated for 3-5 micron transmission.
Unmounted Fresnel Polymer Lens
Thin, lightweight Fresnel lens of PMMA for overhead projectors and solar concentrators. Classifies under HTS 9001.90.40.00 as unmounted plastic optical lens with concentric grooves. Provides wide-angle projection.
Zinc Selenide Unmounted Lens
ZnSe lens for CO2 lasers and FTIR spectrometers, transmitting 0.6-20μm. HTS 9001.90.40.00 for unmounted IR optical element of compound semiconductor. Polished to λ/4 surface.
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.
Calcium Fluoride Unmounted Lens
CaF2 lens for excimer lasers and spectroscopy, excellent UV transmission to 130nm. HTS 9001.90.40.00 covers unmounted optical fluoride crystal lens. Deliquescent; requires sealed packaging.
Unmounted Achromatic Doublet Lens
Crown-flint achromat lens pair cemented for color correction in microscopes. Still unmounted (no cell), qualifies HTS 9001.90.40.00 as composite optical lens. Eliminates chromatic aberration.
Polycarbonate Unmounted Contact Lens Blank
Pre-formed contact lens blank of gas-permeable polycarbonate, awaiting final surfacing. HTS 9001.90.40.00 as unfinished unmounted contact lens. Higher oxygen permeability than hydrogel.