Document ID: chunk:federal_register_of_legislation:F2024L01024:front:0:p195
Version: federal_register_of_legislation:F2024L01024
Segment Type: other
Provision Reference: 
Character Range: 564401–567555

active mechanism that forces the camera not to function when the response limiting mechanism is removed; and
                           3. Not specially designed or modified for underwater use; or
d. Having all of the following:
                           1. Not incorporating a 'direct view' or electronic image display;
                           2. Has no facility to output a viewable image of the detected field of view;
                           3. The "focal plane array" is only operable when installed in the camera for which it was intended; and
                           4. The "focal plane array" incorporates an active mechanism that forces it to be permanently inoperable when removed from the camera for which it was intended.
Note: When necessary, details of the item will be provided, upon request, to the appropriate authority in the exporter's country in order to ascertain compliance with the conditions described in Note 4 above.
6. A. 003. b. 5. Imaging cameras incorporating solid‑state detectors specified by 6A002.a.1.
 OPTICS
6. A. 004. Optical equipment and components, as follows:
a. Optical mirrors (reflectors) as follows:
Technical Note:
For the purposes of 6A004.a., Laser Induced Damage Threshold (LIDT) is measured according to ISO 21254‑1:2011.
6. A. 004. a. 1. 'Deformable mirrors' having an active optical aperture greater than 10 mm and having any of the following, and specially designed components therefor:
                  a. Having all the following:
                     1. A mechanical resonant frequency of 750 Hz or more; and
                     2. More than 200 actuators; or
                  b. A Laser Induced Damage Threshold (LIDT) being any of the following:
                     1. Greater than 1 kW/cm2 using a "CW laser"; or
                     2. Greater than 2 J/cm2 using 20 ns "laser" pulses at 20 Hz repetition rate;
Technical Note:
For the purposes of 6A004.a.1.:
                  1. 'Deformable mirrors' are mirrors having any of the following:
                       a.  A single continuous optical reflecting surface which is dynamically deformed by the application of individual torques or forces to compensate for distortions in the optical waveform incident upon the mirror; or
                       b.  Multiple optical reflecting elements that can be individually and dynamically repositioned by the application of torques or forces to compensate for distortions in the optical waveform incident upon the mirror.
                  2. 'Deformable mirrors' are also known as adaptive optic mirrors.
6. A. 004. a. 2. Lightweight monolithic mirrors having an average "equivalent density" of less than 30 kg/m2 and a total mass exceeding 10 kg;
6. A. 004. a. 3. Lightweight "composite" or foam mirror structures having an average "equivalent density" of less than 30 kg/m2 and a total mass exceeding 2 kg;
                Note: 6A004.a.2. and 6A004.a.3. do not apply to mirrors specially designed to direct solar radiation for terrestrial heliostat installations.
6. A. 004. a. 4. Mirrors specially designed for beam steering mirror stages specified by 6A004.d.2.a. with a flatness