C-Mount Lens Clearance Dimensions

When using a C-Mount lens, the following restrictions apply:

• Maximum thread length is 5.25mm.
• The C-Mount lens threads and body cannot protrude more than 6.5mm in length into the vision system when screwed in unless the diameter of the back lens is smaller than 14.75mm. If the C-Mount lens threads and body protrude more than 6.5mm, you can add a spacer between the lens and vision system. However, the spacer decreases the working distance.