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US 11,381,147 B2Granted
Driving mechanism
AssigneeTDK Taiwan Corp.
InventorsIchitai Moto, Shih-Ting Huang, Haruo Taguchi, Sin-Jhong Song
Life of this patent
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Abstract
A driving mechanism for driving an optical element is provided, including a holder unit, a base unit, and a magnetic element. The holder unit is used to hold the optical element, and the base unit includes a metal substrate and a circuit structure formed on the metal substrate, wherein the circuit structure includes a driving coil. The magnetic element is disposed on the holder unit and corresponds to the driving coil for driving the optical element to move relative to the base unit.
Claims20
A driving mechanism for driving an optical element, comprising:
- a housing, having a top cover, a sidewall extending from the top cover along an optical axis of the optical element, and a receiving space, wherein the top cover is not parallel to the optical axis;
- a base unit, disposed in the receiving space, comprising:
- a metal substrate;
- and
- a circuit structure, directly formed on the metal substrate, wherein the circuit structure comprises a driving coil;
- a holder unit, disposed between the housing and the base unit and configured to hold the optical element;
- a magnetic element, disposed in the receiving space and corresponding to the driving coil for driving the optical element to move relative to the base unit;
- and
- a photosensitive module, having a photosensitive element corresponding to the optical element and a magnetic field sensing element corresponding to the magnetic element;
- wherein the base unit is disposed between the magnetic element and the magnetic field sensing element;
- wherein the metal substrate has a first thickness along the optical axis of the optical element, the circuit structure has a second thickness along the optical axis, and the second thickness is greater than the first thickness.
8 more elements
A driving mechanism for driving an optical element, comprising:
- a housing, having a top cover, a sidewall extending from the top cover along an optical axis of the optical element, and a receiving space, wherein the top cover is not parallel to the optical axis;
- a base unit, disposed in the receiving space, comprising:
- a metal substrate;
- and
- a circuit structure, directly formed on the metal substrate, wherein the circuit structure comprises a driving coil;
- a holder unit, disposed between the housing and the base unit and configured to hold the optical element;
- a magnetic element, disposed in the receiving space and corresponding to the driving coil for driving the optical element to move relative to the base unit;
- and
- a photosensitive module, having a photosensitive element corresponding to the optical element and a magnetic field sensing element corresponding to the magnetic element;
- wherein the base unit is disposed between the magnetic element and the magnetic field sensing element;
- wherein the metal substrate has a maximum thickness along the optical axis of the optical element and a minimum width along a direction perpendicular to the optical axis, wherein the maximum thickness is greater than the minimum width.
8 more elements
A driving mechanism for driving an optical element, comprising:
- a housing, having a top cover, a sidewall extending from the top cover along an optical axis of the optical element, and a receiving space, wherein the top cover is not parallel to the optical axis;
- a base unit, disposed in the receiving space, comprising:
- a metal substrate;
- and
- a circuit structure, directly formed on the metal substrate, wherein the circuit structure comprises a driving coil;
- a holder unit, disposed between the housing and the base unit and configured to hold the optical element;
- a magnetic element, disposed in the receiving space and corresponding to the driving coil for driving the optical element to move relative to the base unit;
- and
- a photosensitive module, having a photosensitive element corresponding to the optical element and a magnetic field sensing element corresponding to the magnetic element;
- wherein the base unit is disposed between the magnetic element and the magnetic field sensing element;
- wherein the metal substrate has a narrow portion having a thickness along the optical axis of the optical element and a width along a direction perpendicular to the optical axis, wherein the thickness is greater than the width.
8 more elements
A driving mechanism for driving an optical element, comprising:
- a housing, having a top cover, a sidewall extending from the top cover along an optical axis of the optical element, and a receiving space, wherein the top cover is not parallel to the optical axis;
- a base unit, disposed in the receiving space, comprising:
- a metal substrate;
- and
- a circuit structure, directly formed on the metal substrate, wherein the circuit structure comprises a driving coil;
- a holder unit, disposed between the housing and the base unit and configured to hold the optical element;
- a magnetic element, disposed in the receiving space and corresponding to the driving coil for driving the optical element to move relative to the base unit;
- and
- a photosensitive module, having a photosensitive element corresponding to the optical element and a magnetic field sensing element corresponding to the magnetic element;
- wherein the base unit is disposed between the magnetic element and the magnetic field sensing element;
- wherein the metal substrate has a narrow portion, and the circuit structure further comprises a conductive trace, wherein the narrow portion has a minimum width of the metal substrate along a direction perpendicular to the optical axis of the optical element, and the conductive trace forms a multilayer structure above the narrow portion.
8 more elements
A driving mechanism for driving an optical element with an optical axis, comprising:
- a holder unit, configured to hold the optical element;
- a base unit, comprising:
- a metal substrate;
- and
- a circuit structure, directly formed on the metal substrate without adhesives between the metal substrate and the circuit structure, wherein the circuit structure comprises:
- a driving coil;
- and
- a conductive trace, electrically connected to the driving coil, wherein a maximum size of the conductive trace in the optical axis is less than a maximum size of the metal substrate in the optical axis;
- and
- a housing, has a top cover and a sidewall extending from the top cover toward the base unit, wherein the top cover is not parallel to the optical axis;
- and
- a magnetic element, disposed on the holder unit and corresponding to the driving coil for driving the optical element to move relative to the base unit.
9 more elements
Dependencies are inferred from the claim text.