ECCN 2B002
NSATNumerically controlled optical finishing machine tools equipped for selective material removal to produce non-spherical optical surfaces having all of the following characteristics .
What This ECCN Covers
ECCN 2B002 controls numerically controlled optical finishing machine tools that use selective material removal to produce non-spherical (aspheric) optical surfaces, meeting defined surface-roughness and accuracy criteria. Equipment that can fabricate precision aspheric optics is controlled for National Security and Anti-Terrorism reasons because such optics are central to advanced imaging and directed-energy systems.
Who needs to check this?
Makers and exporters of optical fabrication equipment — magnetorheological finishing, ion-beam figuring, and computer-controlled polishing machines.
Compliance tip
Control hinges on achievable surface roughness and figure accuracy — verify the machine's specification against the entry thresholds, since less precise polishers fall outside. Confirm the NS and AT Country Chart columns and the License Exception paragraph before exporting.
Items Covered
- b.Finishing to a roughness less (better) than 100 nm rms;
- c.Four or more axes which can be coordinated simultaneously for "contouring control"; and
- d.Using any of the following processes:
- 1. ‘Magnetorheological finishing (MRF)’;
- 2. ‘Electrorheological finishing (ERF)’;
- 3. ‘Energetic particle beam finishing’;
- 4. ‘Inflatable membrane tool finishing’; or
- 5. ‘Fluid jet finishing’.
Control Reasons
Items controlled for national security reasons under multilateral export control regimes.
Items controlled for anti-terrorism reasons. Most items on the CCL have AT controls.
Disclaimer
This information is for reference only. For official classifications, consult BIS or a qualified export control professional.