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US 2026/0063867 A1Published application
Actuator for optical axis adjustment and optical axis adjustment device
AssigneeTamron Co., Ltd.
InventorsYoshinori UENO, Masamitsu HYODO, Lingjian MENG
Life of this patent
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Abstract
An actuator for optical axis adjustment, which allows a wedge prism to be mounted thereon and is rotationally driven by a voice coil motor, has a bearing structure in which rolling members are sandwiched between a groove on a movable unit and a groove on a fixed unit that face mutually radially.
Claims9
An actuator for optical axis adjustment, comprising:
- a fixed unit;
- a movable unit configured to hold an anisotropic optical element, the movable unit being attached rotatably to the fixed unit;
- a magnetic-field generator for driving disposed along a rotational direction of the movable unit in one of the movable unit and the fixed unit;
- a coil disposed along the rotational direction in another of the movable unit and the fixed unit, the coil overlapping the magnetic-field generator for driving;
- a first groove formed circumferentially on the movable unit with respect to the rotational direction;
- a second groove formed circumferentially on the fixed unit with respect to the rotational direction;
- and
- three or more rolling members sandwiched between the first groove and the second groove, wherein
- the first groove and the second groove face mutually radially with respect to the rotational direction.
6 more elements
Dependencies are inferred from the claim text.