Focusing Lens Mount

The focusing lens mount is a critical component of optical focusing systems that provides precise mechanical alignment and secure attachment for lenses. It ensures the lens maintains proper optical axis alignment while allowing controlled movement for focus adjustment. Within the focusing mechanism, it serves as the interface between the lens element and the adjustment mechanism, translating rotational or linear motion into precise lens positioning.

This mount is designed for use in optical instruments such as cameras, microscopes, and other imaging systems. It accommodates standard C-mount lenses with a lens diameter range of 25–30 mm. The mount features a standard C-mount thread (M25×0.75 per ISO 965-1) and a flange focal distance of 17.526 mm per IEC 61174-1. The adjustment travel is 5–10 mm, with an adjustment precision of ±0.02 mm and centering accuracy of ±0.01 mm. The operating temperature range is -20 to 70 °C in non-condensing environments, and the recommended torque for the locking ring is 0.5–1.5 N·m. The weight ranges from 50–80 g depending on material.

Materials on file include aluminum alloy (e.g., 6061-T6 per ASTM B221), stainless steel, and engineering plastic. These materials are selected for their mechanical properties and suitability for precision machining. The mount's design ensures minimal play and consistent alignment throughout the focusing range.

When selecting or verifying a focusing lens mount, it is essential to confirm model-specific values and standards with the legal manufacturer or supplier. The listed parameters are reference ranges and must be validated for the intended application. The mount is a component, not a complete focusing system, and its performance depends on integration with other optical and mechanical elements.

The lens mount typically employs threaded, bayonet, or friction-based retention systems to secure the lens. When the focusing mechanism is actuated, the mount translates mechanical input (rotational or linear motion) into controlled movement of the lens along the optical axis. This changes the distance between the lens and the focal plane, thereby adjusting focus. Precision machining ensures minimal play and consistent alignment throughout the focusing range.