xiMU - Technical Manual Version 2.10
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3.2.6.
MU9 Lens Mount Adapters
There are two lens mount adapters available (S-Mount, M12 x 0.5 thread).
3.2.6.1.
MECH-MU9-MH-ADAPT-M, dimensional drawing
figure 3-4, lens mount adapter MECH-MU9-MH-ADAPT-M, image
figure 3-5, lens mount adapter MECH-MU9-MH-ADAPT-M, drawing
Geometric Back-focal Distance (measured from the top of the flange to the top of the sensor die): 7.39 mm.