Abstract: A focusing mount includes a focusing frame fixed to a focus tube with at least one lens having an optical axis which is connected to a constraining frame by prismatic joints for enabling movement of the focusing mount along the optical axis without any twisting, lateral, rotational or swing movements.
Abstract: A focusing mount includes a focusing frame fixed to a focus tube with at least one lens having an optical axis which is connected to a constraining frame by prismatic joints for enabling movement of the focusing mount along the optical axis without any twisting, lateral, rotational or swing movements.