Sony Corporation

Takatoshi Uneme

Fujio Kanai

Tatsuo Makii

Mitsuru Ichikawa

Atsushi Okita

Satoshi Imai

Takeshi Takizawa

Hideo Okamoto

Keishi Iwana

Motoshige Ito

A lens unit includes: a lens barrel; a movable section including a movable lens and configured to be moved in an optical axis direction relative to the lens barrel; a linear actuator including a drive magnet and a drive coil and configured to move the movable section in the optical axis direction by supplying a current to the drive coil; and a pair of biasing blade springs including holding portions for holding the movable section, a plurality of spring portions biasing the movable section in the optical axis direction, and attachment portions to be attached to the lens barrel. One of the biasing blade springs is formed with two spring members through which the current is supplied to the drive coil.

Lens unit and imaging apparatus

A lens unit includes a lens barrel, an imaging system arranged therein; a movable part having a movable lens, moved in an optical axis with respect to the lens barrel; a linear actuator for moving the movable part in the optical axis direction; and a biasing plate spring having a holding section that holds the movable part, spring sections that can be resiliently deformed and bias the movable part in the optical axis direction, and attached sections that are attached to the lens barrel, the thickness direction of the plate spring coinciding with the optical axis, wherein the holding section of the biasing plate spring is formed into a circular arc; and at least a portion of the spring sections of the plate spring are formed into a shape extending in a direction substantially along the holding section on the outer peripheral side of the holding section.

A lens unit includes: a lens barrel; a movable section including a movable lens and configured to be moved in an optical axis direction relative to the lens barrel; a linear actuator configured to move the movable section in the optical axis direction; and a biasing blade spring including a holding portion for holding the movable section, a plurality of spring portions capable of being elastically deformed and biasing the movable section in the optical axis direction, and an attachment portion to be attached to the lens barrel. The plurality of spring portions of the biasing blade spring are configured to restraint a movement force produced at the movable section in a plane orthogonal to the optical axis.

A lens unit includes a lens barrel having an imaging optical system arranged therein and a movable unit having a movable lens, the movable unit being movable in an optical axis direction with respect to the lens barrel. The lens barrel includes a first member and a second member adapted to be coupled together in a coupling direction. Fixing pieces are provided on the first member and the second member, respectively, and fixing means is filled between the fixing pieces when the first member and the second member are coupled together. The respective fixing pieces are provided in positions at which a force is applied in a direction in which the fixing means is compressed by the respective fixing pieces when a force is applied to the first member and the second member in a direction in which the first member is released from the second member.

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Tokyo, Japan

Takatoshi Uneme