Canon Kabushiki Kaisha

Taro Murakami

Kiyoshi Nitto

Takumi Uehara

Hiroki Ito

Atsuto Noda

Yosuke Fukai

Nobuyoshi Suzuki

Shigeki Okauchi

Yusuke Fujiwara

Hitoshi Nabetani

Hiroyuki Takahashi

Takashi Fujii

Hiroshi Saruwatari

Yoshiyuki Mizoguchi

Shuichi Terada

Keisuke Adachi

Toshinobu Yamaguchi

Junichiro Iwamatsu

A lens apparatus includes a lens disposed closest to an object, a holder holding the lens, a cover having a first opening to expose the lens when viewed from an optical axis direction of the lens and being positioned with the holder in the optical axis direction, and an exterior member having a second opening to engage with an outer diameter of the cover. A first gap in a diameter direction orthogonal to the optical axis direction formed between the holder and the cover is larger than a second gap in the diameter direction formed between the exterior member and the cover.

Lens apparatus

A lens apparatus attachable to an image pickup apparatus includes a first optical system, a second optical system, and a driving unit that moves at least one of the first optical system and the second optical system in an optical axis direction. The lens apparatus is configured to switch between a first driving mode for performing autofocus by moving both the first optical system and the second optical system in optical axis directions of the first optical system and the second optical system via the driving unit, and a second driving mode for adjusting a difference in imaging position for a same object image between the first optical system and the second optical system by moving the at least one of the first optical system and the second optical system in the optical axis direction via the driving unit.

Lens apparatus and image pickup apparatus capable of switching between driving modes

A stereo lens apparatus includes two optical systems arranged in parallel. Each of the two optical systems includes, in order from an object side to an image side, first to third lens units. An optical path is bent at a position between the first and second lens units and at a position between the second and third lens units in each of the two optical systems so that an inter-optical axis distance between two third lens units is narrower than an inter-optical axis distance between two first lens units. Part of one holding mechanism of two holding mechanisms that are configured to respectively hold the two third lens units is located in a concave portion provided on the other holding mechanism, and part of the other holding mechanism is located in a convex portion provided on the one holding mechanism.

Stereo lens apparatus and image pickup apparatus

A control apparatus for a camera system that includes a lens apparatus including a first optical system and a second optical system and configured to move them relative to each other, and an image pickup apparatus including an image sensor and detachably attachable to the lens apparatus includes a processor configured to acquire a first evaluation value of the first optical system at a first focus detection position corresponding to the first optical system, determine a second focus detection position corresponding to the second optical system based on an first object image formed by the first optical system and a second object image formed by the second optical system, acquire a second evaluation value of the second optical system at the second focus detection position, and move the first optical system and the second optical system based on the first evaluation value and the second evaluation value.

Control apparatus, lens apparatus, image pickup apparatus, camera system, and control method

A lens apparatus includes a first optical system, a second optical system disposed in parallel with the first optical system, and a lens mount attachable to a camera body. Each of the first optical system and the second optical system has a first optical axis, a second optical axis, and a third optical axis in order from an object side to an image side. A distance between the first optical axis of the first optical system and the first optical axis of the second optical system is longer than a diameter of the lens mount, and a distance between the third optical axis of the first optical system and the third optical axis of the second optical system is shorter than the diameter of the lens mount.

Lens apparatus and image pickup apparatus

An image pickup apparatus includes a lens barrel unit including an imaging optical system, a first cylindrical member, a second cylindrical member movable relative to the first cylindrical member along a guide bar between a retracted position and a pop-up position, a diopter adjuster provided on the second cylindrical member, a first detector configured to detect that the second cylindrical member is located at the retracted position or the pop-up position, and a first display unit. The guide bar is formed inside a projection surface of the first display unit when viewed from an optical axis direction. The first detection unit is fixed onto the first cylindrical member, and the first detector is more distant from the lens barrel unit than a reference line that passes a center of the first cylindrical member when viewed from the optical axis direction.

Image pickup apparatus

An image pickup apparatus that can store a display device in an apparatus body and that prevents snap fit connection from releasing in a pulled-out state where the display device is pulled out while keeping ease of assembly in manufacturing. The image pickup apparatus includes a first barrel, a second barrel that is connected to the first barrel and achieves a stored state and the pulled-out state of the display device by relatively moving with respect to the first barrel, and a third barrel that is connected to the second barrel by snap fit connection. The first barrel has a fastening part at its end of connection with the second barrel so that the fastening part suppresses release of the snap fit connection in the pulled-out state and does not suppress the release of the snap fit connection in the stored state.

Image pickup apparatus equipped with display device

A lens barrel that prevents an oscillation phenomenon caused by vibrations occurring when a lens of an image blur correction mechanism shifts. A first cylinder is engaged in the cam cylinder and caused to move in a direction of an optical axis by rotation of a cam cylinder. A second cylinder supports a lens holding member, which moves in a direction different from a direction of an optical axis so as to correct for an image blur, and is engaged in the cam cylinder and caused to move in the direction of the optical axis by rotation of the cam cylinder. The second cylinder has a first vibration isolation pin that is engaged with the first cylinder movably in the direction of the optical axis.

Lens barrel that prevents oscillation phenomenon of lens barrel, and image pickup apparatus

An image stabilization apparatus includes a correction lens, a movable member configured to hold the correction lens and to move on a spherical surface with a predetermined point as a center on an optical axis for an image stabilization, and a base member configured to movably hold the movable member and including a second surface that contacts a first surface on the movable member when the movable member moves. At least one of the first surface on the movable member and the second surface on the base member inclines to the predetermined point so as to approach to the optical axis.

Image stabilization apparatus, lens barrel, and imaging apparatus

A barrier mechanism of an optical apparatus capable of preventing generation of a gap between barrier blades and an opening part in a closed state without complicating a configuration. Barrier blades are arranged overlapping in an optical axis direction, and are driven by a barrier driving ring to rotate in an opening-and-closing direction for opening and closing the opening part. A barrier barrel is arranged at the outer peripheral side of the barrier driving ring, and holds the barrier blades. The barrier blades includes a main barrier blade that is arranged at an image surface side and is rotatably supported by the barrier barrel with a first shaft, and auxiliary barrier blades that are rotatably supported by a second shaft that is provided on the subject side of the main barrier blade. The first shaft and the second shaft are arranged in parallel but are not coaxial.

Optical apparatus equipped with barrier mechanism

An image pickup apparatus which is improved in space efficiency for an optical system element, thereby reducing the apparatus size when a lens barrel is retracted. An image pickup apparatus includes a zoom lens barrel that moves between a retracted position and a shooting position in an optical axis direction to thereby change a photographing magnification. A prism bends an optical beam incident from a lens group of the lens barrel. A diaphragm-shutter element is capable of moving along the direction of the second optical axis together with a stepping motor for actuating the diaphragm-shutter element. The stepping motor is disposed, at least when the lens group is in the retracted position, at a position where the stepping motor overlaps the prism in parallel with the second optical axis.

Image pickup apparatus improved in space efficiency for optical system element

A shutter apparatus mounted in an image sensing apparatus, the shutter apparatus comprising: a blade member configured to open/close an opening through which light from an object passes, and control an aperture area of the opening; and a driving unit capable of first and second driving controls, the first driving control driving the blade member to serve as a stop, and the second driving control driving the blade member to serve as a shutter, wherein when the object is captured by an image sensor, the driving unit temporarily drives the blade member in an opening direction from a first position, to which the blade member is driven in a closing direction to serve as a stop, and then activates the blade member to a fully closing position.

Shutter apparatus, image sensing apparatus, and shutter control method

A lens barrel holding frame whose back surface wall is positioned at a position on the reflection optical element, in a state before moving to the retraction position, opposite to the lens unit in a direction of the first optical axis, wherein a through hole, through which the lens unit can retract along the first optical axis, is formed on the back surface wall of the lens barrel holding frame.

Imaging apparatus

A lens barrel capable of increasing the degree of freedom of installation of a detection unit and capable of making the lens barrel compact in size. The lens barrel includes third and fourth lens groups disposed adjacent to each other and movable in a common optical axis direction. In a first movement section, the third lens group moves in unison with the fourth lens group. In a second movement section adjacent to the first movement section, only the third lens group moves. When a photointerrupter fixed to a cover of the third lens group is light-shielded by a light shield plate formed on a lens holder of the fourth lens group, it is detected that a distance between the third and fourth lens groups becomes a predetermined distance.

Growing community of inventors

Tokyo, Japan

Taro Murakami