Canon Kabushiki Kaisha

Nidec Copal Corporation

Nidex Copal Corporation

Toru Ishimasa

Kohei Uemura

Hidetoshi Nishigori

Satoko Uchikawa

Toshihiro Ogawa

Kohei Matsumoto

Kenichi Watabe

Masato Shiono

Mitsuru Morohashi

Yoji Fujimura

Haruki Oe

An optical apparatus capable of adjusting a position of a lens with a simple configuration that enables miniaturization without deteriorating optical performance. Lens groups are arranged on an optical axis to be movable along the optical axis. A first shaft is arranged in parallel to the optical axis and has a fitting part fit in a predetermined lens group and a first fixing part. A support member rotatably supports the first shaft by holding the first fixing part. A center axis of the first fixing part and a center axis of the fitting part are eccentric. The first shaft is supported by the support member to be rotatable around the center axis of the first fixing part. The predetermined lens group is movable between an image pickup position on the optical axis and a retreat position that is separated from the optical axis by rotating around the first shaft.

Optical apparatus, image stabilization device, lens barrel, and image pickup apparatus

An optical apparatus includes first and second lens groups, a guide barrel having a straight-guiding groove, a cam barrel, and an interlocking member having a first coupling portion. The cam barrel includes a first cam groove that moves the first lens group and a second cam groove that is different from the first cam groove and moves the interlocking member. When the second lens group changes a focal length range of an optical system from a second focal length range to a first focal length range, the first lens group is moved in a direction of an optical axis by the straight-guiding groove and the first cam groove, the interlocking member is moved in the direction of the optical axis by the straight-guiding groove and the second cam groove, and the first coupling portion withdraws the second lens group to outside of an optical path of the first lens group.

Optical apparatus and image-capturing apparatus

An interchangeable lens in which a tilt of an optical axis of a shooting optical system and a projection lens system can be easily adjusted. An interchangeable lens comprising a lens barrel portion holding a lens group; a lens mount detachably coupled to a camera main body; and a spacer sandwiched between the lens barrel portion and the lens mount. The spacer has, in a circumferential direction of the interchangeable lens, first seat surfaces protruding in the optical axis direction at one surface thereof, and has, in the circumferential direction, second seat surfaces protruding in the optical axis direction at the other surface thereof. One seat surfaces of the first seat surfaces and the second seat surfaces are disposed with different heights such that a surface defined by the second seat surfaces has an angle with respect to a surface defined by the first seat surfaces.

Interchangeable lens and camera system

An optical apparatus includes a driving unit, a holder holding the driving unit, a moving member holding an optical member and movable by drive of the driving unit, and a guide fixed to the holder in parallel to an optical axis direction. The driving unit is fixed to the holder by a screw and a nut. The nut includes a first plane part. The nut is disposed so that the first plane part of the nut is substantially orthogonal to a line connecting a center of the guide and centers of the screw and the nut when viewed in the optical axis direction.

Optical apparatus

One holder of the first and second holders in an optical apparatus has first and second adjustment face groups. The first and second adjustment face groups respectively include a plurality of first adjustment faces and a plurality of second adjustment faces. The second adjustment face group is provided along a first rotation direction from the first adjustment face group. The other holder has first and second abutting portions respectively abutting against any one of the plurality of first and second adjustment faces. A position on the optical axis of an adjustment face arranged at an end in a second rotation direction opposite to the first rotation direction among the plurality of first adjustment faces is approximately equal to a position on the optical axis of an adjustment face arranged at an end in the first rotation direction among the plurality of second adjustment faces.

A lens barrel that is capable of facilitating attachment and detachment of an image stabilizing unit with a cheap and easy configuration. An image stabilizing actuator has a coil and a magnet that are arranged so as to face to each other. A first holding member holds the coil. A second holding member holds the magnet, and is movable in a direction orthogonal to an optical axis with respect to the first holding member. A sensor detects moving amount of the second holding member in the direction orthogonal to the optical axis. A third holding member holds the sensor. The first holding member and the third holding member are attached to a flexible printed circuit board. The terminal sections of the coil and the sensor are located on the same side of the flexible printed circuit board. The third holding member is bent toward the first holding member.

Lens barrel and image pickup apparatus including the same

There is provided a barrier device including a main barrier blade and a sub barrier blade. In the operation range of the main barrier blade and the sub barrier blade, a portion of the contacting surface provided on the sub barrier blade that contacts on the main barrier blade is located within the operation range of the contacting surface provided on the main barrier blade that contacts on the sub barrier blade.

Barrier device, lens barrel, and imaging apparatus including same

An image pick-up apparatus that is capable of correcting shading due to a closing travel operation of a shutter by a simple process. An image pick-up device picks up the image formed. A shutter unit opens and closes a substantially rectangular aperture corresponding to image pick-up area of the image pick-up device by means of a plurality of rotating shutter blades. The shutter blades travel in mutually opposite directions perpendicular to a long side of the aperture while keeping edges of the shutter blades facing the aperture are parallel to the long side so that edge portions that cover a center area of the aperture start shading the aperture before edge portions that cover four corner areas of the aperture start shading the aperture.

Image pick-up apparatus capable of correcting shading due to a closing travel operation of a shutter to pick up static image

A lens barrel includes a lens tube configured to hold a lens, a barrier driving member configured to move between an opened state and a closed state by switching of the lens tube between a shooting-ready state and a retracted state, a pair of first barrier blades, each of which includes a blade portion, configured to open and close in conjunction with the barrier driving member, and a pair of second barrier blades, each of which includes a blade portion and a coupling portion, the coupling portion positioned outside the lens as viewed from an object side and located closer to the first barrier blade than the blade portion, the pair of second barrier blades being configured to be moved by contact between the coupling portion and the first barrier blade.

Lens barrel and camera including lens barrel

When the lens barrel is in the storage state, a part of a lens group and a group cylinder are inserted into an aperture of a diaphragm unit and a shutter blade of a shutter unit is closed for light shielding. With this arrangement, the cylinder length in the storage state is shortened, and the performance degradation of an image sensor and optical components provided on a front side of an image sensor can be prevented as well.

Lens barrel and imaging apparatus

Provided is a lens barrel including a fourth lens group that holds a fourth lens, a second lens group that holds a second lens and is disposed closer to an object than the fourth lens group, and a drive source that drives the fourth lens group in a direction along the optical axis. The fourth lens has a notch around a portion of an outer periphery thereof. The drive source is provided in the notch.

A lens barrel that is capable of decreasing a barrel length under a retracted condition by simplifying a configuration. The lens barrel changes a focal length by moving first and second lens groups in an optical axis direction. A light-amount adjusting member is located between the first and second lens groups. First, second, third holding frames hold the first lens group, the second lens group, and the light-amount adjusting member, respectively. A cam mechanism moves the first, second, and third holding frames in the optical axis direction so that a part of the second lens group is inserted into the aperture of the light-amount adjusting member and concave and convex surfaces of the first and second lens groups are overlapped in the optical axis direction under a retracted condition. The aperture diameter of the light-amount adjusting member is enlarged when shifting to the retracted condition from a shooting condition.

Growing community of inventors

Kawasaki, Japan

Toru Ishimasa