Prosilica GE Technical Manual V2.0.4
38
Camera dimensions
Image to infinity
Use a C-Mount compatible lens that allows an infinity focus. Set the lens to
infinity and image a distant object—10 to 15 m should suffice. Make sure the
lens is firmly threaded onto the C-Mount ring. Rotate the lens and C-Mount ring
until the image is focused. Carefully tighten the locking ring and recheck focus.
Lens protrusion for C-Mount cameras
Lens protrusion is the distance from outer edge of C-Mount ring to contact point
of first surface internal to C-Mount ring. For color cameras this surface is the IR-
filter holder, and for mono cameras this surface is the internal camera front
plate (see figure 26). Table 13 presents lens protrusion values for Prosilica GE
cameras with C-Mount.
Figure 26: Cross section of typical Prosilica GE front assembly with C-Mount
Camera
Lens protrusion [mm]
Camera
Lens protrusion [mm]
GE680
13.64
GE1660C
9.67
GE680C
9.01
GE1900
13.64
GE1050
13.64
GE1900C
9.15
GE1050C
9.71
GE1910
13.64
GE1650
13.64
GE1910C
9.67
GE1650C
9.20
GE2040
13.64
GE1660
13.64
GE2040C
13.64
Table 13: Lens protrusion for Prosilica GE cameras with C-Mount
Lens protrusion
Section A-A for C-Mount
monochrome cameras
Front Plate
IR cut filter
holder
Lens protrusion
Section A-A for C-Mount
color cameras
A
A
