Holographic Interferometer
An optical instrument using lasers to measure surface deformations and vibrations via holography. Classified in HTS 9013.80.91.00 as other optical appliances not elsewhere specified, distinct from basic telescopes or measuring tools. Ideal for non-destructive testing in engineering.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If optimized for precise measurement of length, surface or contours
Measuring optical instruments are classified in 9031 per chapter note over general 9013.
If includes calibration apparatus for optical instruments
Apparatus for calibrating optical instruments falls under 9010, separate from general appliances.
If sold as a part for speedometers or tachometers
Parts principally for chapter 90 revolution counters classify under 9029.
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Import Tips & Compliance
• Submit detailed optical schematics to confirm it's not a dedicated measuring instrument under 9031
• Ensure export licenses if capable of military applications per ITAR regulations
• Label as 'optical appliance' not 'testing machine' to avoid chapter XVI part exclusions
Related Products under HTS 9013.80.91.00
He-Ne Laser Tube
A helium-neon gas laser tube used in scientific instruments for alignment and interferometry. It generates a continuous visible red laser beam and falls under HTS 9013.80.91.00 as a laser other than laser diodes, not specified elsewhere. This classification covers standalone optical appliances for precision applications.
Optical Spectrum Analyzer
A device that analyzes the optical spectrum of light sources using diffraction gratings and detectors. It qualifies under HTS 9013.80.91.00 for other optical instruments not specified elsewhere, used in photonics R&D. Excludes electrical spectrum analyzers.
Laser Beam Profiler
An instrument using CCD cameras and optics to measure laser beam intensity profiles and quality (M² factor). Falls under HTS 9013.80.91.00 as other optical appliances for laser characterization. Not a general measuring telescope.
Schlieren Imaging System
Optical setup with parabolic mirrors and knives to visualize air flow and shock waves via density gradients. Classified HTS 9013.80.91.00 for other optical instruments in aerodynamic research. Excludes machine vision systems.
Fabry-Perot Interferometer
Precision optical cavity with parallel mirrors for measuring laser wavelengths and fine spectra. HTS 9013.80.91.00 covers this as other unspecified optical instruments for spectroscopy. Not a scanning confocal microscope.
Laser Alignment Tool
Portable optical device combining laser source, beam expander, and target for machinery alignment. Under HTS 9013.80.91.00 as other optical appliances, not technical machine parts. Used in industrial maintenance.