Canon Kabushiki Kaisha

Sharp Kabushiki Kaisha Corporation

Olympus Corporation

Toyo Corporation

Kunihiko Sasaki

Masahisa Tamura

Toshinori Yamazaki

Masayasu Shigematsu

Shigehiro Torii

Toru Matsumoto

Katsuhiro Inoue

Kazuaki Yamana

Atsushi Koyama

Masanori Ishikawa

Yasuhiro Kume

Tadanori Okada

Takashi Kurihara

Yuki Nagao

Masaru Inoue

Shota Shimada

Shigeki Sato

Akinori Araya

Takehiko Sato

Toshihiro Okuda

Yasunari Matsukawa

Toshimune Nagano

Masayasu Mizushima

Shu Ito

Daisuke Ochi

Hirokazu Shukuin

Takeya Nakayama

Hiroshi Sasaki

Kazuhiro Noguchi

Tatsuo Nakata

Hiromu Yasuda

Haruhisa Ueda

Seishiro Takano

Yasuhiro Hatakeyama

Haruki Ota

Takumi Yamanaka

Katsuyuki Hashimoto

Yasushi Murakami

Yohei Kuwabara

Kenta Koiwai

An accessory attachable to and detachable from an image pickup apparatus includes a second mount portion including a plurality of second bayonet claw portions capable of engaging with a plurality of first bayonet claw portions, a plurality of second terminals capable of contacting with a plurality of first terminals, an accessory body, and a mount fixing member for fixing the second mount portion to the accessory body. The plurality of second terminals is provided at positions different from positions of the plurality of second bayonet claw portions, and all of multiple second terminals, among the plurality of second terminals, used in communication between the image pickup apparatus and the accessory are provided at predetermined positions.

Accessory, image pickup apparatus on which same is mountable, and camera system

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 interchangeable lens assembly includes a plurality of lens-side claw portions configured to be engaged with a plurality of camera-side claw portions, and a lock pin groove portion into which a lock pin is inserted, a lens barrel, and a lens mount fixing member. When θ1 is an angle formed by a line passing through a fifth lens-side end and an optical axis, and a line passing through a center of the lock pin groove portion and the optical axis, and θ2 is an angle formed by a line passing through a fourth lens-side end and the optical axis, and a line that passes through the center of the lock pin groove portion and the optical axis, θ1 and θ2 satisfy a predetermined conditional expression.

An optical apparatus evaluating method includes the steps of acquiring first data on a performance of an optical apparatus, which changes along with use of the optical apparatus, acquiring second data on a reference performance of the optical apparatus, and evaluating the performance of the optical apparatus using the first data and the second data.

Optical apparatus evaluating method

An image stabilizing apparatus includes a driver configured to drive an optical system configured to correct an image blur in a direction that includes a component in a direction orthogonal to an optical axis, detectors configured to detect position information on the optical system, and a controller configured to control the driver. The detectors are disposed at a first detecting position and a second detecting position on a plane orthogonal to the optical axis. At the first detecting position, position information in a first detecting direction and position information in a second detecting direction different from the first detecting direction are detected. At the second detecting position, position information in a third detecting direction is detected. At least two of the first to third detecting directions are orthogonal to each other.

Image stabilizing apparatus and lens barrel having the same

The disclosed optical apparatus includes a first movable member movable in an optical axis direction a holding member holding an optical element and movable with respect to the first movable member in the optical axis direction, a guide member held by the first movable member and guides the holding member in the optical axis direction, a second movable member movable in the optical axis direction independently of the first movable member, and a drive unit configured to drive the holding member in the optical axis direction. The drive unit is held such that displacement of the drive unit with respect to the second movable member in the optical axis direction is restricted by the second movable member.

Optical apparatus

An accessory configured to be detachably mountable to an image pickup apparatus including a first mount portion including first bayonet claw portions, and first terminals, the accessory including a second mount portion including second bayonet claw portions configured to enable engagement with the first bayonet claw portions, and second terminals configured to enable contact with the first terminals, in which the second terminals are provided at positions that are different from positions of the second bayonet claw portions, and wherein, a half line that extends from a central axis of the second mount portion and passes through a second terminal that determines whether an optical apparatus is mounted on the image pickup apparatus or not, passes through a predetermined second bayonet claw portion.

An interchangeable lens assembly includes a plurality of lens-side claw portions configured to enable engagement with a plurality of camera-side claw portions, and a lock pin concave portion in which a lock pin is inserted. Furthermore, &#x3b8;1 is an angle formed by a line passing through a fifth lens-side end and an optical axis, and a line passing through a center of a lock pin concave portion and the optical axis, and &#x3b8;2 is an angle formed by a line passing through a fourth lens-side end and the optical axis, and a line that passes through the center of the lock pin concave portion and the optical axis. In the above, &#x3b8;1 and &#x3b8;2 satisfy a predetermined conditional expression.

An image capturing apparatus includes a first mount portion and a first cylindrical member that has a color different from a color of the first mount portion and is disposed in a circumferential direction of the first mount portion, an accessory includes an exterior portion, a second mount portion, and a second cylindrical member having a color different from a color of the second mount portion and similar to a color of the first cylindrical member and disposed in a circumferential direction of the second mount portion, and in a state where the accessory is attached to the image capturing apparatus, reference surfaces of the first mount portion and the second mount portion are in contact with each other, and the first cylindrical member and the second cylindrical member are externally exposed regardless of whether the accessory is attached to or detached from the image capturing apparatus.

Image capturing apparatus, accessory, camera system including image capturing apparatus and accessory

An interchangeable lens assembly includes a plurality of lens-side claw portions configured to be engaged with a plurality of camera-side claw portions, and a lock pin groove portion into which a lock pin is inserted, a lens barrel, and a lens mount fixing member. When &#x3b8;1 is an angle formed by a line passing through a fifth lens-side end and an optical axis, and a line passing through a center of the lock pin groove portion and the optical axis, and &#x3b8;2 is an angle formed by a line passing through a fourth lens-side end and the optical axis, and a line that passes through the center of the lock pin groove portion and the optical axis, &#x3b8;1 and &#x3b8;2 satisfy a predetermined conditional expression.

Adapter for camera lens

Growing community of inventors

Utsunomiya, Japan

Kunihiko Sasaki