Prosilica GS Technical Manual V2.2.2
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Mechanical drawings
C-Mount flange focal distance
Flange focal distance is the optical distance from the mounting flange to image
sensor die. Prosilica GS C-Mount cameras are optically calibrated to a standard
17.526 mm optical flange focal distance, with a ±10 µm tolerance.
Prosilica GS cameras are shipped with adjustable C-Mount.
Adjustment of C-Mount
The C-Mount is adjusted at the factory and should not require adjusting. If for
some reason the lens mount requires adjustment, use the following method.
Loosen locking ring
Use an adjustable wrench to loosen the locking ring. Be careful not to scratch
the camera. When the locking ring is loose, unthread the ring a few turns from
the camera face.
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 meters 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.
Figure 12: Prosilica GS camera front view
Note
A wrench suitable for this procedure is available for purchase
from Allied Vision.
Order code: 02-5003A
LOCKING RING
C-MOUNT RING
LOCKING WRENCH
