A provided lens assembly device includes a lens assembly that has a plurality of adjacently lens modules, each accommodating one or more lenses, and a lens holder where the plurality of lens modules are disposed, where, for each of the plurality of lens modules, a respective lens module includes a side surface facing another lens module, of the plurality of lens modules, disposed adjacent to the respective lens module, where the side surface includes at least a first flat surface, and at least one lens, of the one or more lenses of the respective lens module, having a first total length in a first axial direction, perpendicular to an optical axis of the respective lens module, and a second total length in a second axial direction, perpendicular to both the optical axis and the first axial direction, where the first total length is longer than the second total length.

A provided lens assembly device includes a lens assembly that has a plurality of adjacently lens modules, each accommodating one or more lenses, and a lens holder where the plurality of lens modules are disposed, where, for each of the plurality of lens modules, a respective lens module includes a side surface facing another lens module, of the plurality of lens modules, disposed adjacent to the respective lens module, where the side surface includes at least a first flat surface, and at least one lens, of the one or more lenses of the respective lens module, having a first total length in a first axial direction, perpendicular to an optical axis of the respective lens module, and a second total length in a second axial direction, perpendicular to both the optical axis and the first axial direction, where the first total length is longer than the second total length.

An optical system is provided. The optical system includes a first assembly and a second assembly. The first assembly includes a first welding portion. The second assembly is affixed on the first assembly and includes a second welding portion. The first welding portion is affixed on the second welding portion by welding.

An electronic device includes a camera module including an optical image stabilization device, a memory, and a processor, and the optical image stabilization device includes a first direction driver, a first driver circuit that controls the first direction driver, a second direction driver, and a second driver circuit that controls the second direction driver, and the first direction driver monitors a movement amount of the second direction driver from a control signal transmitted from the processor, determines a first correction amount corresponding to the movement amount, and controls the first direction driver based on the first correction amount. Additional various embodiments identified through the specification are possible.

An optical mechanism is provided, including an optical member, a fixed portion, and a holder. The optical member has a first optical lens and a second optical lens, wherein the first and second optical lenses define an optical axis, and the first optical lens is larger than the second optical lens. The holder is movably connected to the fixed portion and configured to support the optical member, wherein the holder has an end surface facing the first optical lens, and the end surface is not parallel to the optical axis.

An optical mechanism is provided, including an optical member, a fixed portion, and a holder. The optical member has a first optical lens and a second optical lens, wherein the first and second optical lenses define an optical axis, and the first optical lens is larger than the second optical lens. The holder is movably connected to the fixed portion and configured to support the optical member, wherein the holder has an end surface facing the first optical lens, and the end surface is not parallel to the optical axis.

A lens drive device having a housing, a bobbin disposed within the housing, a coil disposed in the bobbin, a magnet disposed in the housing and facing the coil, a base disposed below the housing, and an elastic member coupled to the bobbin and the housing is provided. The base includes a groove formed in the upper surface thereof. At least a part of the elastic member is disposed in the groove of the base or above the groove. The groove of the base is disposed with a damping material.

A circuit module is provided and includes a metal substrate, an insulating layer, and a circuit element. The metal substrate includes a main body, a bent portion, and an opening. The opening is formed between the main body and the bent portion, and the bent portion is bent relative to the main body. The insulating layer is disposed on the metal substrate. The circuit element is disposed on the insulating layer and is extended across the opening.

A circuit module is provided and includes a metal substrate, an insulating layer, and a circuit element. The metal substrate includes a main body, a bent portion, and an opening. The opening is formed between the main body and the bent portion, and the bent portion is bent relative to the main body. The insulating layer is disposed on the metal substrate. The circuit element is disposed on the insulating layer and is extended across the opening.

An embodiment comprises: a housing; a bobbin arranged inside the housing; a first coil arranged on the bobbin; first magnets arranged on first to fourth corner portions of the housing, respectively; a first circuit board which is arranged on a first side portion of the housing, and which comprises a first terminal, a second terminal, a third terminal, and a fourth terminal; a first position sensor arranged on the first circuit board and electrically connected to the first to fourth terminals; a first upper elastic unit arranged on the first corner portion of the housing; a second upper elastic unit arranged on the second corner portion of the housing; a third upper elastic unit arranged on the third corner portion of the housing; and a fourth upper elastic unit arranged on the fourth corner portion of the housing. One end of the first upper elastic unit extends from the first corner portion to the first side portion of the housing and is coupled to the first terminal. One end of the second upper elastic unit extends from the second corner portion to the first side portion of the housing and is coupled to the second terminal. One end of the third upper elastic unit extends from the third corner portion to the first side portion of the housing and is coupled to the third terminal. One end of the fourth upper elastic unit extends from the fourth corner portion to the first side portion of the housing and is coupled to the fourth terminal.