Lens drive device and manufacturing method therefor
AssigneeNidec Sankyo Corporation
InventorsTakeshi SUE, Yuji SHINGU, Syusuke IMAI
Life of this patent
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Abstract
A lens drive device may include a movable body holding a lens and movable in an optical axis direction of the lens, a fixed body movably holding the movable body, a drive mechanism for driving the movable body, and a board on which an imaging element is mounted and which is fixed on an opposite-to-object side of the fixed body. An opposite-to-object side end face of the fixed body is formed with a plurality of projections which are abutted with a mounting face of the board on which the imaging element is mounted for correcting inclination of an optical axis of the lens with respect to the imaging element.
Claims17
A lens drive device comprising:
- a movable body which holds a lens and is movable in an optical axis direction of the lens;
- a fixed body which movably holds the movable body in the optical axis direction;
- a drive mechanism for driving the movable body in the optical axis direction;
- and
- a board on which an imaging element is mounted and which is fixed on an opposite-to-object side of the fixed body;
- wherein an opposite-to-object side end face which is an end face on the opposite-to-object side of the fixed body is formed with a plurality of projections which are abutted with a mounting face of the board on which the imaging element is mounted for correcting inclination of an optical axis of the lens with respect to the imaging element.
A manufacturing method for a lens drive device including a movable body which holds a lens and is movable in an optical axis direction of the lens, a fixed body which movably holds the movable body in the optical axis direction, a drive mechanism for driving the movable body in the optical axis direction, a board on which an imaging element is mounted and which is fixed on an opposite-to-object side of the fixed body, and a plurality of projections which are formed on an opposite-to-object side end face that is an end face on the opposite-to-object side of the fixed body and are abutted with a mounting face of the board on which the imaging element is mounted for correcting inclination of an optical axis of the lens with respect to the imaging element,
- the manufacturing method comprising:
- inspecting an inclination angle and an inclining direction of the optical axis of the lens with respect to the imaging element;
- and
- an inclination correcting process in which, when the inclination angle of the optical axis of the lens exceeds a predetermined reference value, the projection is crushed on a basis of an inspection result of the inclining direction of the optical axis of the lens to correct inclination of the optical axis of the lens with respect to the imaging element.
Dependencies are inferred from the claim text.