Panasonic Intellectual Property Management Co., Ltd.

Taku Ichikawa

Takumi Kuwahara

Atsushi Hasegawa

Takahiro Matsukawa

A lens barrelcomprises a substantially cylindrical first lens group unitthat holds a lens L, and a substantially cylindrical front frame unitthat is disposed in a state of being close to the outer peripheral surface side of the substantially cylindrical first lens group unit. The first lens group unithas a rectilinear keythat protrudes outward in the radial direction on the outer peripheral surface of the lens Lon the image plane side in the optical axis direction. The front frame unithas an inside diameter that is smaller than the outside diameter of the first lens group unitin the portion where the rectilinear keyis provided. The first lens group unitand the front frame unitare formed so that a gap is formed between the outside diameter of the first lens group unitand the inside diameter of the front frame unitat a position opposite the rectilinear keyin the radial direction.

Lens barrel

A lens barrelcomprises a first lens group framea rotating shafta plurality of barrier vanestoan annular barrier sliding frameand an annular stationary frameThe plurality of barrier vanestorotate around the rotating shaftand switch between an open state of exposing the surface of a first lens Lin an imaging state, and a closed state of covering the surface of the first lens Lin a collapsed state. The annular barrier sliding frameis disposed on the subject side of the first lens group frameand rotates the plurality of barrier vanestoupon rotating relatively around the optical axis with respect to the first lens group frameThe stationary frameis disposed between the plurality of barrier vanestoand the barrier sliding frameand fixed with respect to the first lens group frameand supports the plurality of barrier vanesa tofrom the opposite side from the subject.

Lens barrel and imaging device equipped with same

A collapsible lens barrel includes: an opening/closing unit (shutter unit) that includes an opening/closing portion (shutter blade) openable and closable along a plane orthogonal to an optical axis to control a light amount, and a maintaining portion (projection) that maintains an opened state of the opening/closing portion; an inner lens disposed closer to an object than the opening/closing unit is; an inner frame that holds the inner lens; an outer lens disposed closer to the object than the inner lens is; an outer frame that holds the outer lens; and a restriction portion that restricts operation of the maintaining portion by restriction applied from the outer frame to the maintaining portion via the inner frame to maintain the opened state of the opening/closing portion when the outer frame and the inner frame are collapsed.

Growing community of inventors

Osaka, Japan

Taku Ichikawa