Fujifilm Corporation

Fujinon Corporation

Kazuyoshi Azegami

Yi Pan

Yukitaka Takeshita

Yuichi Kawanabe

Shinji Otsuka

Mitsuhiko Oka

Nobuyuki Kondo

Satoru Horikoshi

Yusuke Suzuki

A lens barrel and an exterior housing have a highly dignified appearance while maintaining excellent strength. The lens barrel has a fixation frame with an opening portion and a switch pedestal cover member that covers the opening portion. A fitted portion is provided on an inner surface side of the cover member and fitted into the opening portion to position the cover member with respect to the fixation frame when the opening portion is covered with the cover member. A fixation portion is provided on an inner surface side of the cover member and disposed inside the fixation frame when the opening portion is covered with the cover member. A spring member engages with the fixation portion and an inner wall surface portion of the fixation frame to bias the cover member towards an inside of the fixation frame. The exterior housing has features similar to the lens barrel.

Lens barrel and exterior housing

There is provided a lens barrel that can easily and reliably prevent an erroneous operation at the time of switching of a manual focus mode. A lens barrel body houses an imaging optical system including a focus lens. A focus operation ring rotates integrally with a first connection ring about an optical axis of the imaging optical system. A second connection ring is movable between an engagement position at which the second connection ring is engaged with the first connection ring and a cam ring and a disengagement position at which the second connection ring is not engaged with both of the first connection ring and the cam ring. A switching-operation ring is movable between a rotation-restriction position at which the switching-operation ring moves the second connection ring to the engagement position and a rotation-allowable position at which the switching-operation ring moves the second connection ring to the disengagement position.

Lens barrel, method of controlling lens barrel, camera body, method of controlling camera body, imaging device, and method of controlling imaging device

An object of the invention is to provide a camera body of which a manual focus mode can be easily switched. A lens barrel includes an imaging optical system, a first operation ring, a second operation ring, and first and second sensors. The first sensor detects the rotation of the first operation ring and the rotation angle and the rotational direction of the first operation ring. The second sensor detects the angular position of the second operation ring. The imaging optical system includes a focus lens. A camera body includes a body control unit. The body control unit selectively executes a first manual focus mode in which the focus lens is moved according to the rotational direction and the rotation angle detected by the first sensor and a second manual focus mode in which the focus lens is moved according to the angular position detected by the second sensor.

Lens barrel, camera body, and imaging device

A method for adjusting an optical axis of an imaging optical system is provided. The imaging optical system includes: a first lens element; a right-angle prism; and a lens group, and is incorporated in a lens barrel including: a first holding member positioning and fixing the first lens and the right-angle prism; and a second holding member incorporating the lens group. The method includes: when assembling the first holding member and the second holding member, positioning the first holding member relative to the second holding member; making inspection light incident into the first lens; and changing a relative position of the first holding member to the second holding member so that an image obtained from the inspection light takes a reference position, so as to coincide an optical axis of the subject light emerged from the right-angle prism with an optical axis of the lens group.

Growing community of inventors

Saitama, Japan

Kazuyoshi Azegami