The lens must be attached steadily to the sensor. Two common lens mounts in
machine vision systems are S and C.
S-mount lenses are small and inexpensive, often used with board-level sensors. A typical S-mount lens has a fixed focus and minimal adjustment possibilities, whereas C-mount lenses are the most common in machine vision applications.
C-mount optics have a wide range of compatible components, enabling them to be used in prototype imagers constructed with different optical and optomechanical components.
Typically, these lenses have adjustable iris and focus. The price range resonates with the optics’ quality and resolution. Several other mounts exist, but C- and S-mounts are considered the most suitable for basic research due to their satisfactory quality, available accessories and affordability.
Above, Figure 1 show how sensors, C mount lenses and optical components can be combined for specific imaging purposes.
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