Nidec Corporation

Keishi Otsubo

Tomohiro Egawa

Takayuki Iwase

Genki Tanaka

Kazuhiro Sazai

Soichiro Kimura

An optical assembly includes a fixed body and a movable body supported swingably with respect to the fixed body, and the movable body includes an optical element including an optical axis, a holder into which the optical element is insertable, a contact portion in the holder and in contact with the fixed body, and an elastic body to press the contact portion toward the fixed body.

Optical unit

An optical unit includes an optical element, a holder, a first support portion, a second support portion, a first swing mechanism, and a second swing mechanism. The holder holds the optical element. The first support portion supports the holder so as to be swingable about a first swing axis. The second support portion supports the first support portion so as to be swingable about the second swing axis. The second swing mechanism includes a second magnet and a second coil. The second magnet is arranged on the first support portion. The second coil is arranged on the second support portion.

An optical unit that corrects a shake of an optical module includes: a movable portion having a holder that holds the optical module; and a fixed portion that rotatably supports the movable portion. The movable portion is rotatable relative to the fixed portion in first-third rotation directions correspondingly centered on first-third axes which correspondingly extend in first-third directions. The first direction is parallel to an optical axis direction of the optical module in a state in which the movable portion is stationary. The first direction, the second direction, and the third direction are perpendicular to each other. The movable portion further includes a protrusion protruding toward the fixed portion from an end of the holder closer to the fixed portion in the optical axis direction. The fixed portion includes a support portion that rotatably supports the protrusion.

In an optical unit, a first swing mechanism swings a holder with reference to the y-axis direction, and a second swing mechanism swings the holder with reference to the z-axis direction. A case has a first recess that accommodates at least a part of a first protrusion of the holder and a second recess that accommodates at least a part of a second protrusion of the holder. The first recess has a first side surface located on one side in the y-axis direction of the first protrusion, a second side surface located on the other side in the y-axis direction of the first protrusion, and a bottom surface. The second recess has a first side surface located on one side in the y-axis direction of the second protrusion, a second side surface located on the other side in the y-axis direction of the second protrusion, and a bottom surface.

An optical unit includes a movable body, a fixed body, and a first swing mechanism. The fixed body supports the movable body so as to be swingable in a first swing direction about a first swing axis. One of the movable body and the fixed body has a first magnet. The other of the movable body and the fixed body has a first magnetic body. The first magnetic body has a first magnetic body portion, a second magnetic body portion, and a third magnetic body portion. The first magnetic body portion passes through an axis perpendicular to each of the first swing axis and the optical axis of an optical element. The second magnetic body portion is disposed on one side in the first swing direction of the first magnetic body portion. The third magnetic body portion is disposed on the other side in the first swing direction of the first magnetic body portion.

An optical assembly includes an optical element including a reflection surface to reflect light in a first axis direction, a holder to hold the optical element, a case to support the holder, a first swing mechanism to swing the holder around a first swing axis, and a second swing mechanism to swing the holder around a second swing axis perpendicular to the first swing axis. The holder includes first and second protrusions. The case includes first and second recesses. Each of the recesses includes a first side surface located on one side in the axial direction of the second swing axis and a second side surface located on the other side with respect to the corresponding protrusion. At least one of the first and second side surfaces includes an inclined surface inclined with respect to the second swing axis.

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Kyoto, Japan

Keishi Otsubo