5.Dimensions
© 2023 China Daheng Group, Inc. Beijing Image Vision Technology Branch 71
Figure 5-7 ME2L-U3-L mechanical dimensions
5.2.
Optical Interface
The cameras are equipped with C-mount lens adapters. The back-flange distance is 17.526 mm (in the
air). The maximum lens allowed thread length of ME2P and MER2 cameras should be less than 11.3mm,
as shown in Figure 5-8. The maximum lens allowed thread length of ME2L cameras should be less than
9.4mm, as shown in Figure 5-9. And the maximum lens allowed thread length of ME2S cameras should
be less than 10.15mm, as shown in Figure 5-10.
The color models are equipped with an IR filter and the cut-off frequency is 700nm. The mono models are
equipped with a transparent glass. Remove IR-filter or transparent glass will defocus the image plane.
Contact our technical support when the glass needed to be removed.
Figure 5-8 C-mount optical interface of ME2P/MER2
Figure 5-9 C-mount optical interface of ME2L
Figure 5-10 C-mount optical interface of ME2S
