Document ID: chunk:federal_register_of_legislation:F2024C00148:reg:9:p3
Version: federal_register_of_legislation:F2024C00148
Segment Type: reg
Provision Reference: reg 9 (pt 3/13)
Character Range: 73956–77056

at a distance of 250 m away from the CMS shall be distinguishable as two point light source. This requirement is applicable to Class I, Class II and Class III devices for indirect vision.

              The point light source detection factor (PLSDF) shall be at least 2.7 or the point light source contrast factor (PLSCF) shall be at least 0.12, whichever is satisfied by the CMS test under the conditions and the test procedure described in Annex 12, paragraph 1.3.

              If the system is in a mode where point light sources are not rendered as described above, this shall be indicated to the driver. The information indicated shall be explained in the operator's manual.

              6.2.2.3.3.6. Sharpness and depth of field

              6.2.2.3.3.6.1. Sharpness

              The sharpness is represented by the MTF50(1:1) and it shall satisfy:

              (a) Horizontal and vertical MTF50(1:1) at center

                  (b) Horizontal and vertical MTF50(1:1) at corners (70 per cent of image height)

              6.2.2.3.3.6.2. Depth of field

              The CMS shall enable the driver to observe the occupied space by the object and perceive the content shown within the range of interest with detailed resolution. The MTF10(1:1), when measured at different distances to the object, shall satisfy at least the minimum resolution for the following points:

                  (a) Resolution at point 1 (10 m as representative point for infinity) and point 2 (middle distance at 6 m)

           (b) Resolution at point 3 (Close distance at 4 meters)

              6.2.2.3.3.7. Geometric distortion

               For CMS of Classes I, II and III the maximum distortion within the minimum required field of view shall not exceed 20 per cent relative to recto-linear or pinhole projection.

              This performance shall be tested according to the method given in ISO 16505:2015, Annex G.3.

              6.2.2.3.3.8. Further image quality requirements

              6.2.2.3.3.8.1. Flicker

               The entire image area of the monitor shall be free of flicker according to the test method of Annex 12, paragraph 1.2.

              6.2.2.3.4. Time behaviour

              6.2.2.3.4.1. Frame rate

              Movements of objects in front of the camera shall be rendered smooth and fluid. The minimum frame rate of the system (update rate of the image information) shall be at least 30 Hz. At low light conditions or while maneuvering at low speed, the minimum frame rate of the system (i.e. update rate of the image information) shall be at least 15 Hz.

              6.2.2.3.4.2. Image formation time

               The image formation time of the monitor shall be less than 55 ms at a temperature of 22 °C ± 5 °C.

              This performance shall be tested according to the method given in
              ISO 9241-305:2008.

              6.2.2.3.4.3. System latency

              A CMS shall have a sufficient short latency to render the scenery nearly at the same time. The latency shall be lower than 200 ms at room temperature