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2B002

Materials Processing

Category 2Group BWassenaar Arrangement2 thresholds

Description

Numerically controlled optical finishing machine tools equipped for selective material removal to produce non-spherical optical surfaces having all of the following characteristics:

Control Thresholds

Reference	Parameter	Threshold
2B002.a	Finishing the form to	< 1.0 µm
2B002.b	Finishing to a roughness	< 100 nm

Sub-entries (4)

2B002.a

Finishing the form to less (better) than 1.0 µm;

Finishing the form to: < 1.0 µm

2B002.b

Finishing to a roughness less (better) than 100 nm rms;

Finishing to a roughness: < 100 nm

2B002.c

Four or more axes which can be coordinated simultaneously for "contouring control"; and

2B002.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'.

Product Examples

QED Technologies Q-flex 100 MRF optical finishing machine
Schneider OM 4A CNC machine for aspheric lenses
Satisloh SPM-200 optical polishing machine for complex surfaces
OptoTech OAC-200 optical finishing machine with 5-axis control

Related CN customs codes (indicative)

84642080 84669300

Notes

-Technical Notes For the purposes of 2.B.2.: 1. 'MRF' is a material removal process using an abrasive magnetic fluid whose viscosity is controlled by a magnetic field. 2. 'ERF' is a removal process using an abrasive fluid whose viscosity is controlled by an electric field. 3. 'Energetic particle beam finishing' uses Reactive Atom Plasmas (RAP) or ion-beams to selectively remove material. 4. 'Inflatable membrane tool finishing' is a process that uses a pressurized membrane that deforms to contact the workpiece over a small area. 5. 'Fluid jet finishing' makes use of a fluid stream for material removal.

Applicable Notes

General Technology Note (GTN)

The export of 'technology' which is 'required' for the 'development', 'production' or 'use' of items controlled in Categories 0 to 9 is controlled according to the provisions in each Category. 'Techno...

General Software Note (GSN)

The Lists do not control 'software' which is either: 1. Generally available to the public by being: a. Sold from stock at retail selling points, without restriction, by means of: (1) Over-the-counter ...

Category 2 - Materials Processing

This category covers machine tools and their controls, including numerically controlled (NC) machine tools with specific positioning or contouring accuracy thresholds. It also covers dimensional inspe...

Catch-All Clause - Article 4 of Regulation (EU) 2021/821

Article 4(1): An authorisation shall be required for the export of dual-use items not listed in Annex I if the exporter has been informed by the competent authority that the items in question are or m...

Cyber-Surveillance Catch-All - Article 5 of Regulation (EU) 2021/821

Article 5(1): An authorisation shall be required for the export of cyber-surveillance items not listed in Annex I if the exporter has been informed by the competent authority that the items in questio...

View official text on EUR-Lex

-Technical Notes For the purposes of 2.B.2.: 1. 'MRF' is a material removal process using an abrasive magnetic fluid whose viscosity is controlled by a magnetic field. 2. 'ERF' is a removal process using an abrasive fluid whose viscosity is controlled by an electric field. 3. 'Energetic particle beam finishing' uses Reactive Atom Plasmas (RAP) or ion-beams to selectively remove material. 4. 'Inflatable membrane tool finishing' is a process that uses a pressurized membrane that deforms to contact the workpiece over a small area. 5. 'Fluid jet finishing' makes use of a fluid stream for material removal.