Dual voice coil motor structure in a dual-optical module camera
AssigneeCorephotonics Ltd.
InventorsGil Bachar, Ephraim Goldenberg, Gal Avivi
Life of this patent
Estimating the term…
Abstract
Dual-optical module autofocus (AF) or AF plus optical image stabilization (OIS) cameras with reduced footprint and reduced mutual magnetic interference. Some AF+OIS cameras may include a single AF actuation assembly that moves two lens barrels in unison. Some AF cameras or AF+OIS cameras may have two AF actuation sub-assemblies and associated magnets for independent AF operation of each lens barrel, the magnets shared in a manner that cancels magnetic influences of one AF actuation sub-assembly on the other AF actuation sub-assembly, thereby allowing the two lens barrels to be positioned in close proximity, saving parts and fabrication costs.
Claims11
An imaging device comprising:
- a) a first lens module having a first optical axis and comprising a first lens carrier surrounded at least partially by a first plurality of magnets;
- b) a second lens module having a second optical axis parallel to the first optical axis and comprising a second lens carrier surrounded at least partially by a second plurality of magnets;
- and c) a plurality of optical image stabilization (OIS) coils, rigidly coupled to each other, each OIS coil associated with at least one of the magnets of the first or second plurality of magnets, wherein the first and second plurality of magnets are rigidly coupled to each other, wherein each lens module is movable relative to both pluralities of magnets along its respective optical axis, wherein the movement of each lens module along its respective optical axis is independent of the movement of the other lens module along its respective optical axis, and wherein the first and second pluralities of magnets are movable relative to the OIS coils in a plane substantially perpendicular to both optical axes.
An imaging device comprising:
- a) a first lens module having a first optical axis and comprising a first lens carrier surrounded at least partially by a first plurality of magnets, and a first AF coil associated with at least one magnet of the first plurality of magnets to provide a first AF movement;
- and b) a second lens module having a second optical axis parallel to the first optical axis and comprising a second lens carrier surrounded at least partially by a second plurality of magnets, and a second AF coil associated with at least one magnet of the second plurality of magnets to provide a second AF movement;
- and c) a plurality of optical image stabilization (OIS) coils, each OIS coil associated with at least one of the magnets of the first or the second pluralities of magnets, wherein each lens module or lens carrier is movable to create focus or autofocus (AF), wherein the movement of each lens module or lens carrier is independent of the movement of the other lens module or lens carrier, and wherein first and second pluralities of magnets include together seven magnets, wherein the first and second pluralities of magnets are movable relative to their associated OIS coils in a plane substantially perpendicular to both optical axes.
Dependencies are inferred from the claim text.