Canon Kabushiki Kaisha

Akino Moriyoshi

Toru Matsumoto

Yuichiro Kato

Toshimune Nagano

Masayasu Mizushima

Takeo Mori

Takami Hirasawa

Kenta Koiwai

Hiroki Osaka

Yuki Matsuba

Yoshiki Saji

A control apparatus is provided for a camera system that includes an image pickup apparatus including an image sensor and a lens apparatus including an optical system that includes at least one optical member for changing at least one of a tilt effect of tilting a focal plane relative to an imaging plane of the image sensor and a shift effect of moving an imaging range. The control apparatus includes at least one memory that stores a set of instructions, and at least one processor that executes the set of instructions to acquire information on an optical state of the optical system, and correct defocus caused by movement of the at least one optical member using the information on the optical state of the optical system.

Control apparatus that provides in-focus state with a tilt or shift effect, lens apparatus, image pickup apparatus, camera system, control method, and storage medium

A control apparatus includes a memory storing instructions, and a processor configured to execute the instructions to acquire first information on a position of a first optical member configured to obtain a tilt effect of tilting a focal plane relative to an imaging surface of an image sensor, and second information on an aperture diameter in a diaphragm unit configured to adjust a light amount, and control a second optical member configured to change an incident ray angle on the image sensor, by changing a control mode of the second optical member according to the first information and the second information.

Control apparatus, image pickup apparatus, lens apparatus, control method, and storage medium

A driving apparatus includes a shift barrel, a first guide unit including a first rolling member, a second guide unit including a second rolling member, a first movable member movable in a first direction orthogonal to the optical axis direction movable in a second direction orthogonal to the optical axis direction and the first direction, a first driving unit configured to drive the first movable member in the first direction, a third guide unit including a third rolling member, a second movable member guided by the third guide unit so as to move in the second direction relative to the base and biased against the shift barrel via a fourth rolling member, a second driving unit configured to drive the second movable member in the second direction, and a biasing member biased in the optical axis direction. The first and third guide units include different members.

Driving apparatus and lens apparatus having the same

An apparatus includes an operation ring including first and second tooth portions, a first unit including an emitting portion that emits light to the first tooth portion and a receiving portion that receives emitted light passing through slits of the first tooth portion, and a second unit including an emitting portion that emits light to the second tooth portion and a receiving portion that receives emitted light passing through slits of the second tooth portion. Rotation of the ring is detected based on detection results by the first and second units. The ring has grooves formed at a first period in a circumferential direction thereof, and between the first and second tooth portions in a direction parallel to a rotation axis of the ring. The apparatus further includes a sliding member that is biased in a radial direction of the ring and slides over the grooves as the ring rotates.

Lens operation apparatus

An image pickup apparatus comprises at least one of a sixth lens unit and an eighth lens unit being movable in a direction orthogonal to an optical axis, a first shift driver or a second shift driver driving the sixth or eighth lens unit, a first shift position detector or a second shift position detector detecting a position of the sixth or eighth lens unit, a photographing condition controller controlling imaging conditions, a detector detecting at least one of a moving speed and a moving direction of an object, and a shift controller controlling the sixth or eighth lens unit based on a signal from the detector. The photographing condition control unit has a following shot mode in which an exposure and a driving of the sixth or eighth lens unit are intermittently performed with respect to a movement of the object.

Image pickup apparatus

An optical apparatus having a pair of lenses spaced from each other in a first direction and movable in a second direction orthogonal to the first direction includes a movable member configured to hold the pair of lenses and to move in a second direction together with a female thread member, and a guide configured to guide a movement of the movable member in the second direction relative to the base member, where a first plane includes an optical axis of each of the pair of lenses, the guide being located at a position on or along a second plane that is orthogonal to the first plane and includes a central axis of the male thread member.

Optical apparatus

A projection optical system for projecting an image of an image display element, includes a lens, a stop, and a holder configured to hold the lens and the stop and disposed at an image-display-element side of the stop. In addition, a light blocking member is disposed at the image-display-element side of the stop and fixed within the holder. At least a part of the light blocking member extends to a position nearer to an optical axis of the lens than the holder, and a face of the light-blocking member nearer to the image-display-element side is inclined in a section including an optical axis of the lens so that a point nearer to the optical axis comes closer to the image display element.

Projector having projection optical system with inclined light blocking member

The apparatus includes a supporting member disposed at an outer circumference of the ocular optical system and an eyepiece cup. A first member thereof includes a cam follower and a second member thereof includes a cam groove to move the eyepiece cup in an optical axis direction with rotation of the eyepiece cup and an introducing groove through which the cam follower is introduced to the cam groove. One member of the first and second members includes an engaging portion, and another member thereof includes a stopper engaging with the engaging portion to prevent rotation of the eyepiece cup in a direction in which the cam follower is returned from the cam groove toward the introducing groove. The stopper formed integrally with another member is elastically movable so as to be located at and retreated from an engaging position to be engageable with the engaging portion.

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Utsunomiya, Japan

Akino Moriyoshi