公开(公告)号：US11428897B2

公开(公告)日：2022-08-30

申请号：US16390358

申请日：2019-04-22

Applicant: NIKON CORPORATION

Inventor： Hiroyuki Tomita ,  Toshiaki Maeda

IPC: G02B7/38 ,  G02B7/28 ,  G03B3/10 ,  G02B7/34 ,  H04N5/232 ,  H04N5/369 ,  G03B13/36 ,  H04N9/04 ,  G02B7/09 ,  G03B17/56

Abstract: A focus adjustment control apparatus is provided which includes: a focus detection unit that calculates an evaluation value with regard to contrast of an image via an optical system to detect a focus adjustment state of the optical system; an acquisition unit that acquires from a lens barrel at least one of a maximum value and a minimum value of an image plane movement coefficient that represents correspondence relationship between a movement amount of a focus adjustment lens included in the optical system and a movement amount of an image plane; and a control unit that uses at least one of the maximum value and the minimum value of the image plane movement coefficient to determine a drive speed for the focus adjustment lens when the focus detection unit detects the focus adjustment state.

公开(公告)号：US11474325B2

公开(公告)日：2022-10-18

申请号：US16390358

申请日：2019-04-22

Applicant: NIKON CORPORATION

Inventor： Hiroyuki Tomita ,  Toshiaki Maeda

IPC: G02B7/38 ,  G02B7/28 ,  G03B3/10 ,  G02B7/34 ,  H04N5/232 ,  H04N5/369 ,  G03B13/36 ,  H04N9/04 ,  G02B7/09 ,  G03B17/56

Abstract: A focus adjustment control apparatus is provided which includes: a focus detection unit that calculates an evaluation value with regard to contrast of an image via an optical system to detect a focus adjustment state of the optical system; an acquisition unit that acquires from a lens barrel at least one of a maximum value and a minimum value of an image plane movement coefficient that represents correspondence relationship between a movement amount of a focus adjustment lens included in the optical system and a movement amount of an image plane; and a control unit that uses at least one of the maximum value and the minimum value of the image plane movement coefficient to determine a drive speed for the focus adjustment lens when the focus detection unit detects the focus adjustment state.

公开(公告)号：US10230887B2

公开(公告)日：2019-03-12

申请号：US15124127

申请日：2015-03-12

Applicant: NIKON CORPORATION

Inventor： Teppei Okuyama ,  Hidefumi Ota ,  Toshiaki Maeda ,  Satoshi Hara ,  Akihiko Kawai

IPC: H04N5/232 ,  G03B17/14 ,  G02B7/10 ,  G03B3/10 ,  H04N5/225

Abstract: A lens barrel attached to an imaging device, including a focus lens unit that is movable in an optical axis direction; an actuator that moves the focus lens unit along the optical axis direction; a drive control section that controls drive of the actuator; and a setting section that is capable of setting a movement range of the focus lens unit to be one of a first range and a second range that differ from each other with respect to at least one of one end and another end, each range defining the range in which the focus lens unit is allowed to move. Even when the movement range of the focus lens unit is set by the setting section to be one of the first range and the second range, the drive control section removes the setting of the movement range when instructions are received from the imaging device.

公开(公告)号：US20240264407A1

公开(公告)日：2024-08-08

申请号：US18635376

申请日：2024-04-15

Applicant: NIKON CORPORATION

Inventor： Hiroyuki Tomita ,  Toshiaki Maeda

IPC: G02B7/38 ,  G02B7/09 ,  G02B7/28 ,  G02B7/34 ,  G03B3/10 ,  G03B13/36 ,  G03B17/56 ,  H04N23/67 ,  H04N25/13 ,  H04N25/704

CPC classification number: G02B7/38 ,  G02B7/09 ,  G02B7/282 ,  G02B7/34 ,  G03B3/10 ,  G03B13/36 ,  G03B17/565 ,  H04N23/672 ,  H04N23/673 ,  H04N25/134 ,  H04N25/704 ,  G03B2206/00

Abstract: A focus adjustment control apparatus is provided which includes: a focus detection unit that calculates an evaluation value with regard to contrast of an image via an optical system to detect a focus adjustment state of the optical system; an acquisition unit that acquires from a lens barrel at least one of a maximum value and a minimum value of an image plane movement coefficient that represents correspondence relationship between a movement amount of a focus adjustment lens included in the optical system and a movement amount of an image plane; and a control unit that uses at least one of the maximum value and the minimum value of the image plane movement coefficient to determine a drive speed for the focus adjustment lens when the focus detection unit detects the focus adjustment state.

公开(公告)号：US10302902B2

公开(公告)日：2019-05-28

申请号：US15461151

申请日：2017-03-16

Applicant: NIKON CORPORATION

Inventor： Hiroyuki Tomita ,  Toshiaki Maeda

IPC: G02B7/38 ,  G03B13/36 ,  G02B7/28 ,  G03B17/56 ,  G02B7/09 ,  G02B7/34 ,  G03B3/10 ,  H04N5/232 ,  H04N5/369

Abstract: A focus adjustment control apparatus is provided which includes: a focus detection unit that calculates an evaluation value with regard to contrast of an image via an optical system to detect a focus adjustment state of the optical system; an acquisition unit that acquires from a lens barrel at least one of a maximum value and a minimum value of an image plane movement coefficient that represents correspondence relationship between a movement amount of a focus adjustment lens included in the optical system and a movement amount of an image plane; and a control unit that uses at least one of the maximum value and the minimum value of the image plane movement coefficient to determine a drive speed for the focus adjustment lens when the focus detection unit detects the focus adjustment state.

公开(公告)号：US12301989B2

公开(公告)日：2025-05-13

申请号：US17418096

申请日：2019-12-27

Applicant: NIKON CORPORATION

Inventor： Toshiaki Maeda ,  Yuki Kita ,  Noriyoshi Tachikawa ,  Tetsuto Kawazu ,  Hiroshi Takeuchi ,  Ikuya Saito ,  Toru Kijima ,  Masayuki Saito

IPC: H04N23/67 ,  H04N23/611 ,  H04N23/63

Abstract: An electronic apparatus includes a detection unit that detects eyes from an image, a selection unit that selects one eye from the eyes detected by the detection unit, an operation unit that accepts an operation of causing the selection unit to select an eye different from the selected eye, and a display unit that displays an indication superimposed on an image indicating that the eye is selected by the selection unit.

公开(公告)号：US09635239B2

公开(公告)日：2017-04-25

申请号：US14267348

申请日：2014-05-01

Applicant: NIKON CORPORATION

Inventor： Hiroyuki Tomita ,  Toshiaki Maeda

IPC: H04N5/232 ,  G02B7/09 ,  G02B7/34 ,  G03B3/10 ,  G02B7/28 ,  G03B13/36

CPC classification number: G02B7/38 ,  G02B7/09 ,  G02B7/282 ,  G02B7/34 ,  G03B3/10 ,  G03B13/36 ,  G03B17/565 ,  G03B2206/00 ,  H04N5/23212 ,  H04N5/3696

Abstract: A focus adjustment control apparatus is provided which includes: a focus detection unit that calculates an evaluation value with regard to contrast of an image via an optical system to detect a focus adjustment state of the optical system; an acquisition unit that acquires from a lens barrel at least one of a maximum value and a minimum value of an image plane movement coefficient that represents correspondence relationship between a movement amount of a focus adjustment lens included in the optical system and a movement amount of an image plane; and a control unit that uses at least one of the maximum value and the minimum value of the image plane movement coefficient to determine a drive speed for the focus adjustment lens when the focus detection unit detects the focus adjustment state.