Abstract: 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.

Abstract: 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.

Abstract: A control apparatus for use with a camera system that includes an image pickup apparatus that includes an image sensor, and a lens an apparatus that includes at least one optical element configured to change at least one of a tilt effect that tilts a focal plane relative to an imaging plane of the image sensor and a shift effect that moves an imaging range includes a first control unit configured to move, in response to a first operation instruction based on an operation to an operation unit, the at least one optical element according to the operation, and a second control unit configured to move the at least one optical element to a preset position in response to a second operation instruction different from the first operation instruction.

Abstract: 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.

Abstract: 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. The optical system includes at least one optical member configured to tilt a focal plane relative to an imaging plane of the image sensor. The control apparatus includes an acquiring unit configured to acquire information about an instructed object, and a control unit configured to acquire information about a position of the object for constructing the focal plane based on information about the instructed object.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A projection optical system for projecting an image of an image display element, includes a holder for holding a lens and disposed at an image-display-element side of a stop, wherein at least a portion of an image-display-element side face of the holder or at least a portion of an image-display-element side face of a light-blocking member provided integrally with the holder at the image-display-element side of the holder, 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.