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ECCN reference · Category 6: Sensors and lasers

ECCN 6A004

Optical equipment and "components," as follows

Systems, equipment and components. Reasons for control: NS (National security), AT (Anti-terrorism).

Does 6A004 need a license to your country?

Enter the full classification (for example 6A004.a.1.a.1) and a destination. The check reads the Country Chart, the end-use and embargo rules, and shows the rule and source behind the answer.

License requirement check

Item classification and destination. No account needed.

An ECCN (such as 5A992.c) is an exact match and works best. Word search matches the official CCL wording and a reviewed list of everyday names as you write them; it does not guess what you mean or fix spelling. Don’t know the ECCN? Use Find the ECCN.

License requirements

Each control below comes from the entry’s License Requirements table. Where it names a Country Chart column, the countries with an X in that column need a license for the items the control covers, unless a License Exception applies.

  • NS (National security): NS applies to entire entry.
    Country Chart column NS2: a license is needed to 156 countries with an X

    Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Armenia, Aruba, Azerbaijan, Bahamas, The, Bahrain, Bangladesh, Barbados, Belarus, Belize, Benin, Bhutan, Bolivia, Bosnia and Herzegovina, Botswana, Brazil, Brunei, Burkina Faso, Burma, Burundi, Cambodia, Cameroon, Cape Verde, Central African Republic, Chad, Chile, China, Colombia, Comoros, Congo (Democratic Republic of the), Congo (Republic of the), Costa Rica, Cote d'Ivoire, Curaçao, Cyprus, Djibouti, Dominica, Dominican Republic, Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Eswatini, Ethiopia, Fiji, Gabon, Gambia, The, Georgia, Ghana, Grenada, Guatemala, Guinea, Guinea-Bissau, Guyana, Haiti, Honduras, Indonesia, Iraq, Israel, Jamaica, Jordan, Kazakhstan, Kenya, Kiribati, Kosovo, Kuwait, Kyrgyzstan, Laos, Lebanon, Lesotho, Liberia, Libya, Macau, Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Marshall Islands, Mauritania, Mauritius, Micronesia (Federated State of), Moldova, Monaco, Mongolia, Montenegro, Morocco, Mozambique, Namibia, Nauru, Nepal, Nicaragua, Niger, Nigeria, North Macedonia, Oman, Pakistan, Palau, Panama, Papua New Guinea, Paraguay, Peru, Philippines, Qatar, Russia, Rwanda, Samoa, San Marino, Sao Tome and Principe, Saudi Arabia, Senegal, Serbia, Seychelles, Sierra Leone, Singapore, Sint Maarten (the Dutch two-fifths of the island of Saint Martin), Solomon Islands, Somalia, South Sudan, Republic of, Sri Lanka, St. Kitts and Nevis, St. Lucia, St. Vincent and the Grenadines, Sudan, Suriname, Taiwan, Tajikistan, Tanzania, Thailand, Timor-Leste, Togo, Tonga, Trinidad and Tobago, Tunisia, Turkmenistan, Tuvalu, Uganda, Ukraine, United Arab Emirates, Uruguay, Uzbekistan, Vanuatu, Vatican City, Venezuela, Vietnam, Western Sahara, Yemen, Zambia, Zimbabwe.

  • AT (Anti-terrorism): AT applies to entire entry. No Country Chart country has an X in column AT1; the destinations this control targets are under “Not decided by the Country Chart” below.

Not decided by the Country Chart: Covered Donetsk region of Ukraine (DNR), Covered Luhansk region of Ukraine (LNR), Crimea region of Ukraine, Cuba, Iran, Korea, North, Syria. These destinations are under embargoes or other special controls in 15 CFR Part 746, which require a license for most items whatever the chart shows. Russia and Belarus also have broad Part 746 controls in addition to the chart.

A blank on the Country Chart is not permission to ship. End-use and end-user rules (15 CFR Part 744), embargoes and sanctions (Part 746), and the parties to the transaction still apply. Use the check above for your item and country.

List-based License Exceptions

As the entry lists them. Each exception has its own conditions in 15 CFR Part 740, and § 740.2 bars or limits most of them for Russia, Belarus, Country Group D:5 and embargoed destinations, so an entry’s “Yes” does not mean it is available everywhere.

  • LVS: $3000
  • GBS: Yes for 6A004.a.1, a.2, a.4, .b, d.2, and .f.
  • Special Conditions for STA
  • STA: Paragraph (c)(2) of License Exception STA may not be used to ship any commodity in 6A004.c or .d to any of the destinations listed in Country Group A:6 (See Supplement No. 1 to part 740 of the EAR).

Items in 6A004

The controls often apply to some paragraphs only, so check the full paragraph, for example 6A004.a.

Show all 47 paragraphs
  • 6A004.a Optical mirrors (reflectors) as follows:
  • 6A004.a.1 'Deformable mirrors' having an active optical aperture greater than 10 mm and having any of the following, and "specially designed" components therefor:
  • 6A004.a.1.a Having all the following:
  • 6A004.a.1.a.1 A mechanical resonant frequency of 750 Hz or more; and
  • 6A004.a.1.a.2 More than 200 actuators; or
  • 6A004.a.1.b A Laser Induced Damage Threshold (LIDT) being any of the following:
  • 6A004.a.1.b.1 Greater than 1 kW/cm^2 using a "CW laser"; or
  • 6A004.a.1.b.2 Greater than 2 J/cm^2 using 20 ns "laser" pulses at 20 Hz repetition rate;
  • 6A004.a.2 Lightweight monolithic mirrors having an average "equivalent density" of less than 30 kg/m^2 and a total mass exceeding 10 kg;
  • 6A004.a.3 Lightweight "composite" or foam mirror structures having an average "equivalent density" of less than 30 kg/m^2 and a total mass exceeding 2 kg;
  • 6A004.a.4 Mirrors "specially designed" for beam steering mirror stages specified in 6A004.d.2.a with a flatness of λ/10 or better (λ is equal to 633 nm) and having any of the following:
  • 6A004.a.4.a Diameter or major axis length greater than or equal to 100 mm; or
  • 6A004.a.4.b Having all of the following:
  • 6A004.a.4.b.1 Diameter or major axis length greater than 50 mm but less than 100 mm; and
  • 6A004.a.4.b.2 A Laser Induced Damage Threshold (LIDT) being any of the following:
  • 6A004.a.4.b.2.a Greater than 10 kW/cm2 using a "CW laser"; or
  • 6A004.a.4.b.2.b Greater than 20 J/cm2 using 20 ns "laser" pulses at 20 Hz repetition rate;
  • 6A004.b Optical "components" made from zinc selenide (ZnSe) or zinc sulfide (ZnS) with transmission in the wavelength range exceeding 3,000 nm but not exceeding 25,000 nm and having any of the following:
  • 6A004.b.1 Exceeding 100 cm^3 in volume; or
  • 6A004.b.2 Exceeding 80 mm in diameter or length of major axis and 20 mm in thickness (depth);
  • 6A004.c "Space-qualified" "components" for optical systems, as follows:
  • 6A004.c.1 "Components" lightweighted to less than 20% "equivalent density" compared with a solid blank of the same aperture and thickness;
  • 6A004.c.2 Raw substrates, processed substrates having surface coatings (single-layer or multi-layer, metallic or dielectric, conducting, semiconducting or insulating) or having protective films;
  • 6A004.c.3 Segments or assemblies of mirrors designed to be assembled in space into an optical system with a collecting aperture equivalent to or larger than a single optic 1 m in diameter;
  • 6A004.c.4 "Components" manufactured from "composite" materials having a coefficient of linear thermal expansion, in any coordinate direction, equal to or less than 5 × 10^−6/K;
  • 6A004.d Optical control equipment as follows:
  • 6A004.d.1 Equipment "specially designed" to maintain the surface figure or orientation of the "space-qualified" "components" controlled by 6A004.c.1 or 6A004.c.3;
  • 6A004.d.2 Steering, tracking, stabilisation and resonator alignment equipment as follows:
  • 6A004.d.2.a Beam steering mirror stages designed to carry mirrors having diameter or major axis length greater than 50 mm and having all of the following, and "specially designed" electronic control equipment therefor:
  • 6A004.d.2.a.1 A maximum angular travel of ±26 mrad or more;
  • 6A004.d.2.a.2 A mechanical resonant frequency of 500 Hz or more; and
  • 6A004.d.2.a.3 An angular "accuracy" of 10 µrad (microradians) or less (better);
  • 6A004.d.2.b Resonator alignment equipment having bandwidths equal to or more than 100 Hz and an "accuracy" of 10 µrad or less (better);
  • 6A004.d.3 Gimbals having all of the following:
  • 6A004.d.3.a A maximum slew exceeding 5°;
  • 6A004.d.3.b A bandwidth of 100 Hz or more;
  • 6A004.d.3.c Angular pointing errors of 200 µrad (microradians) or less; and
  • 6A004.d.3.d Having any of the following:
  • 6A004.d.3.d.1 Exceeding 0.15 m but not exceeding 1 m in diameter or major axis length and capable of angular accelerations exceeding 2 rad (radians)/s^2; or
  • 6A004.d.3.d.2 Exceeding 1 m in diameter or major axis length and capable of angular accelerations exceeding 0.5 rad (radians)/s^2;
  • 6A004.e 'Aspheric optical elements' having all of the following:
  • 6A004.e.1 Largest dimension of the optical-aperture greater than 400 mm;
  • 6A004.e.2 Surface roughness less than 1 nm (rms) for sampling lengths equal to or greater than 1 mm; and
  • 6A004.e.3 Coefficient of linear thermal expansion's absolute magnitude less than 3 × 10^−6/K at 25 °C;
  • 6A004.f Dynamic wavefront measuring equipment having all of the following:
  • 6A004.f.1 'Frame rates' equal to or more than 1 kHz; and
  • 6A004.f.2 A wavefront accuracy equal to or less (better) than λ/20 at the designed wavelength.

Source

Commerce Control List, 15 CFR Part 774, Supplement No. 1 (official text on eCFR), as of August 21, 2026, 1:45AM EDT. Commerce Country Chart, Supplement No. 1 to Part 738, as of August 21, 2026, 1:45AM EDT.

This page is a preliminary reference, not legal advice, a classification ruling or permission to ship. Confirm the classification against the full official text.