Canon Kabushiki Kaisha

Toshihiro Okuda

Shu Ito

Kunihiko Sasaki

Toshinori Yamazaki

Tadanori Okada

Takehiko Sato

Toshimune Nagano

Hyochoru Tanaka

An interchangeable lens comprises a first to a third guide units, and a rear unit base. Each of the first to third guide units includes a pair of guide members including one member and the other member, there are three regions divided in a circumferential direction around the optical axis, a region in which one member of the first guide unit is disposed is defined to as a first region, a region in which one member of the second guide unit is disposed is defined to as a second region, and a region in which one member of the third guide unit is disposed is defined to as a third region. The other member of second guide unit is disposed in first region, the other member of third guide unit is disposed in second region, and the other member of first guide unit is disposed in third region.

Optical apparatus and image pickup apparatus having the same

Provided is a lens barrel including: a fifth lens unit barrel; a fourth lens unit barrel; a linear ultrasonic motor configured to electrically drive the fourth lens unit barrel in an optical axis direction; a rack configured to transfer a driving force of the linear ultrasonic motor to the fourth lens unit barrel; a rack spring configured to bias the rack so that the rack is brought into contact with the fourth lens unit barrel; and a rack guide shaft. The rack guide shaft is fixed to the fourth lens unit barrel. The fourth lens unit barrel and the rack move together in the optical axis direction. When the fifth lens unit barrel is brought into contact with the fourth lens unit barrel, a relative position of the fourth lens unit barrel and the rack in the optical axis direction changes against a biasing force of the rack spring.

Optical apparatus and image pickup apparatus including the same

A lens apparatus includes: a first holder holding a first lens unit and being moved in optical axis direction manually or by an external driver; a second holder holding a second lens unit and being electrically moved in optical axis direction; a first and second detectors respectively detecting positions of the first and second holders; a driving unit configured to move the second holder in optical axis direction; and a controller controlling the driving unit, in which movable ranges of the first and second holders overlap each other in optical axis direction; in which a position of the second holder in optical axis direction corresponds to a position of a movable portion of the driving unit; and wherein the controller changes a control of the driving unit based on a detection of the first and second detectors before the second holder interferes with the first holder.

Lens apparatus, image pickup apparatus, control method for lens apparatus, and medium storing program

An optical apparatus includes holders configured to hold on a base member a third holding member that holds a third optical element among a plurality of optical elements, and provided at three locations in a circumferential direction around an optical axis when viewed from an optical axis direction, or a holder configured to holding the base member on another member. Where first, second, and third axes pass through the optical axis and holders at the three locations, a first driver and a first guide member are disposed in a first area between the first axis and the second axis, and a second driver and a second guide member are disposed in a second area between the first axis and the third axis. The first driver and second driver are disposed in two areas that at least partially overlap each other in the optical axis direction.

Optical apparatus

An apparatus including: a system including a correction lens unit configured to move to correct an aberration; a driving device configured to move the correction lens unit; an image pickup element configured to pick up an image formed by the system; an obtaining device configured to obtain an aberration based on a picked up image, through use of a learned model obtained by learning an image and aberration data of the system; and a controller configured to control the driving device based on the aberration, to thereby correct the aberration.

Image forming apparatus storing scan data in external memory non-transitory recording medium storing control program, and control method

Provided is an aberration correction method including: picking up images of a particular object at a plurality of focus positions including an in-focus position of the particular object; obtaining an aberration information based on the picked up images; and correcting an aberration based on the aberration information.

Aberration correction method, computer-readable storage medium, and image pickup apparatus

A lens apparatus includes an optical system, a holding barrel configured to hold at least part of the optical system, an electric unit attached to the holding barrel, a control board configured to control the electric unit, a flexible printed circuits board configured to connect the electric unit and the control board to each other, a holding member attached to the holding barrel and configured to hold the flexible printed circuits board, and a fixing member configured to attach the holding member to the holding barrel. The flexible printed circuits board includes a first bent part, and the fixing member has a receiving surface configured to receive a reaction force from the first bent part.

Lens barrel and imaging apparatus

A lens barrelincludes an optical system including a first lens unit held by a first holder and a second lens unit held by a second holder. The lens barrelincludes a first cam barrelto be driven rotatably about an optical axis of the optical system in zooming, a second cam barrelto be driven in an optical axis direction of the optical system in synchronization with the first cam barrel, and a third cam barrelto be driven in the optical axis direction in synchronization with the first cam barreland driven rotatably about the optical axis in focusing. The second cam barrelis provided with a first linear movement groove and a first cam groove. The third cam barrelis provided with a second cam groove and a second linear movement groove.

Lens barrel and optical apparatus including the same

An optical control apparatus configured to control driving of a focus correction unit that moves for focusing along an optical axis of an optical system or a normal of an imaging surface, in imaging in which the optical axis tilts to the normal includes an acquirer configured to acquire tilt information on a tilt of the optical system, and a controller configured to control, as a shiftable unit is driven, the driving of the focus correction unit in accordance with the tilt information and vibration information on a vibration of the optical system or a shift drive amount of the shiftable unit, the shiftable unit being configured to shift in a direction orthogonal to the optical axis or a direction orthogonal to the normal in accordance with the vibration of the optical system for an image stabilization.

Optical control apparatus, optical apparatus, and storage medium for storing optical control program

The lens apparatus includes a first lens barrel and a second lens barrel disposed on an image side further than an object side end portion of the first lens barrel so as to allow a movement of the first lens barrel in an optical axis direction, a positioning member attached to one lens barrel of the first and second lens barrels, and an elastic member disposed between the first and second lens barrels to bias the first lens barrel toward an object side. Another lens barrel of the first and second lens barrels is brought in contact with the positioning member with a biasing force from the biasing member, and thereby the first lens barrel is positioned with respect to the second lens barrel in a state where a movement of the first lens barrel on the image side due to an external force is allowed.

Lens apparatus and image pickup apparatus

The lens apparatus includes a first member having a first cam, a second member having a first cam follower engaging with the first cam and a second cam follower, which rotates in a circumferential direction and is moved in an optical axis direction by the first cam, a third member provided with a second cam engaging with the second cam follower and rotating the second member, and biasing members generating between the first and second members a biasing force in a direction oblique to the optical axis direction. The biasing force presses the first and second cam followers respectively against the first and second cams. A biasing force generation direction changes with rotation of the second member, and the biasing force presses the first and second cam followers respectively against same cam surfaces of the first and second cams in an entire second member rotation range.

A lens barrel includes a first cylinder, a second cylinder configured to rotate around an optical axis relative to the first cylinder and to move a lens holding frame holding a lens in an optical axis direction, a force unit arranged outside of the second cylinder, a force relay member arranged outside of the second cylinder and configured to contact the force unit, a first roller fixed to the force relay unit and configured to contact a first surface of the second cylinder, and to transmit a force to the first surface of the second cylinder, the force being applied by the force unit and relayed by the force relay unit; and a second roller fixed to the first cylinder, and configured to contact a second surface inside of the second cylinder, and to restrict a movement of the second cylinder in the optical axis direction by the force.

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Utsunomiya, Japan

Toshihiro Okuda