Discrete variable focus assemblies and apparatuses

A multi-sensor imaging apparatus comprising:

• an apparatus chassis configured to house at least a discrete focusing lens assembly and at least one additional lens assembly, wherein the discrete focusing lens assembly comprises:
• a first positioning coil assembly comprising a first positioning coil, wherein the first positioning coil is positioned around a first positioning pad;
• a second positioning coil assembly comprising a second positioning coil, wherein the second positioning coil is positioned around a second positioning pad;
• a lens barrel assembly comprising first positioning magnet located adjacent to the first positioning pad, a second positioning magnet located adjacent to the second positioning pad, and an imaging optical lens;
• a module base defining an inner module space designed to fit the lens barrel assembly, and wherein the module base is designed to support the first positioning coil assembly at a first coil position and the second positioning coil assembly at a second coil position, the first coil position opposite the second coil position;
• and
• at least one module alignment pin engaged with the module base, the positioning coil assembly, and the lens barrel assembly,
• wherein the first positioning pad, the first positioning coil, and the first positioning magnet together with the second positioning pad, the second positioning coil, and the second positioning magnet define a focus position for the lens barrel assembly.

A method of assembling a discrete focusing lens assembly, the method comprising:

• assembling a lens barrel, a pair of positioning magnets, and an imaging lens to form a lens barrel assembly, wherein the lens barrel assembly comprises a first positioning magnet of the pair of positioning magnets mounted opposite a second positioning magnet of the pair of positioning magnets;
• inserting the lens barrel assembly into a module space defined by a module base, the module base comprising at least one alignment pin opening;
• engaging at least one module alignment pin with the lens barrel assembly through the at least one alignment pin opening of the module base;
• assembling a first positioning coil assembly and a second positioning coil assembly;
• and
• attaching, on the module base, the first positioning coil assembly and the second positioning coil assembly, the first positioning coil assembly positioned opposite the second positioning coil assembly.