-
公开(公告)号：US20230269497A1
公开(公告)日：2023-08-24
申请号：US18185353
申请日：2023-03-16
Applicant: FUJIFILM Corporation
Inventor： Tomoyuki KAWAI , Koichi Tanaka , Yuya Nishio
IPC: H04N25/42 , H04N25/704 , H04N25/533
CPC classification number: H04N25/42 , H04N25/533 , H04N25/704
Abstract: The imaging element has a first and a second phase difference pixel region each including the plurality of phase difference pixels, and an imaging pixel region between the first and the second phase difference pixel region in the first direction. The processor is configured to cause the imaging element to perform imaging at a frame cycle, execute first readout processing of reading out a signal from the first phase difference pixel region during a first frame period, and execute second readout processing of reading out a signal from the second phase difference pixel region during a second frame period subsequent to the first frame period. A first exposure time, during which the first phase difference pixel region is exposed, and a second exposure time, during which the second phase difference pixel region is exposed, are different from an exposure time of the imaging pixel region.
-
公开(公告)号：US11736829B2
公开(公告)日：2023-08-22
申请号：US17892127
申请日：2022-08-22
Applicant: FUJIFILM Corporation
Inventor： Koichi Tanaka , Tomoyuki Kawai , Junya Kitagawa , Yuya Nishio
IPC: H04N25/704 , G02B7/34
CPC classification number: H04N25/704 , G02B7/34
Abstract: The pixel region includes a first phase difference pixel group including a plurality of the phase difference pixels of which the first side of the photoelectric conversion element is blocked by the light blocking layer in a first side region of the first side, and a second phase difference pixel group including a plurality of the phase difference pixels of which the second side of the photoelectric conversion element is blocked by the light blocking layer. The first phase difference pixel group includes a first A pixel and a first B pixel in which a light blocking area of the photoelectric conversion element using the light blocking layer is smaller than that of the first A pixel. The controller performs addition readout processing in which at least one of a pixel signal of the first A pixel or a pixel signal of the first B pixel is weighted in accordance with optical characteristics of the imaging lens.
-
公开(公告)号：US11467367B2
公开(公告)日：2022-10-11
申请号：US17022066
申请日：2020-09-15
Applicant: FUJIFILM Corporation
Inventor： Shinichiro Fujiki , Akihiro Uchida , Koichi Tanaka , Kenkichi Hayashi , Seiichi Izawa
Abstract: An imaging device stores a focal length and a position of a focus lens in a storage unit in a case in which a focal state is determined to be a focus state in which a subject is in focus and at least one of the imaging device or the subject is determined to be stationary; generates tracking data for changing the position of the focus lens according to a change in focal length, using a plurality of stored focal lengths and a plurality of stored positions of the focus lens; and performs a zoom tracking control using the generated tracking data.
-
公开(公告)号：US11336815B2
公开(公告)日：2022-05-17
申请号：US17030312
申请日：2020-09-23
Applicant: FUJIFILM Corporation
Inventor： Koichi Tanaka , Kenkichi Hayashi , Akihiro Uchida , Seiichi Izawa , Shinichiro Fujiki
Abstract: A focusing control device that moves a position of a focus lens included in an imaging lens along an optical axis direction. The device comprises a processor configured to execute a process. The process comprises receiving an input of a captured image obtained by imaging an optical image passed through the imaging lens including the focus lens; performing one processing of first processing that includes deriving a contrast value of an image within a distance measurement area which changes according to the movement of the position of the focus lens for each of a plurality of the distance measurement areas, specifying a peak of the contrast value based on the contrast value for each of the plurality of distance measurement areas, and specifying, as a focusing position, the position of the focus lens corresponding to the specified peak of the contrast value, or second processing that includes specifying the peak of the contrast value based on an added value obtained by adding the contrast values derived from the plurality of distance measurement areas and specifying, as the focusing position, the position of the focus lens corresponding to the specified peak of the contrast value; performing control such that the one processing is switched according to an amount of change of a position of an image of a subject corresponding to a change of an image magnification of the imaging lens, and moving the focus lens to the specified focusing position.
-
65.发明授权公开(公告)号：US11256064B2
公开(公告)日：2022-02-22
申请号：US16151358
申请日：2018-10-04
Applicant: FUJIFILM Corporation
Inventor： Koichi Tanaka
Abstract: A focusing control device includes: a sensor that has a pair of a first signal detection unit that receives one of a pair of beams passed through different parts disposed in one direction in a pupil region of an imaging optical system including a focus lens and detects a signal depending on an intensity of received light and a second signal detection unit that receives other of the pair of beams and detects a signal depending on an intensity of received light, in which a plurality of the pairs that are arranged in the one direction form a pair line and a plurality of the pair lines are arranged in a direction orthogonal to the one direction; an addition correlation operation unit as defined herein; a non-addition correlation operation unit as defined herein; a selection unit as defined herein; and a lens driving section as defined herein.
-
Patent Agency Ranking
66.发明授权公开(公告)号：US11223826B2
公开(公告)日：2022-01-11
申请号：US17183051
申请日：2021-02-23
Applicant: FUJIFILM Corporation
Inventor： Yukinori Nishiyama , Tetsu Wada , Koichi Tanaka , Tetsuya Fujikawa , Kenkichi Hayashi
IPC: H04N19/124 , H04N19/172 , H04N5/783 , H04N5/235 , H04N5/77
Abstract: Provided are an image processing device capable of performing compression processing on a video captured in each video capturing mode according to a first video capturing mode and a second video capturing mode with different capturing conditions. A possible range of a quantization parameter applied in a case where the video is compressed is made different in the first video capturing mode and the second video capturing mode with different capturing conditions. The quantization parameter is determined within a first range in a case of the first video capturing mode, and the quantization parameter is determined within a second range narrower than the first range in a case of the second video capturing mode. In particular, a second upper limit value of the second range is smaller than a first upper limit value of the first range, and a second lower limit value of the second range is larger than a first lower limit value of the first range.
-
公开(公告)号：US10819900B2
公开(公告)日：2020-10-27
申请号：US16509826
申请日：2019-07-12
Applicant: FUJIFILM Corporation
Inventor： Makoto Kobayashi , Tomoyuki Kawai , Seiji Tanaka , Koichi Tanaka
Abstract: In an imaging element in which a plurality of phase difference detection pixels and a plurality of normal pixels for imaging are two-dimensionally arranged in a horizontal direction and a vertical direction, the phase difference detection pixel includes a first phase difference pixel ZA and a second phase difference pixel ZB including opening portions for pupil separation at different positions in the horizontal direction. The first phase difference pixel ZA and the second phase difference pixel ZB are adjacently arranged to have the opening portions facing each other. RGB color filters are arranged in the plurality of normal pixels in the Bayer arrangement. The imaging element includes a normal pixel row in which only the normal pixel is arranged in the horizontal direction and a phase difference pixel row in which the first phase difference pixel ZA, the second phase difference pixel ZB, and one normal pixel are periodically arranged in the horizontal direction.
-
公开(公告)号：US10771673B2
公开(公告)日：2020-09-08
申请号：US16116922
申请日：2018-08-30
Applicant: FUJIFILM CORPORATION
Inventor： Koichi Tanaka , Yitong Zhang , Tetsuya Fujikawa
Abstract: The focusing position detecting device includes contrast evaluation value calculating unit configured to calculate contrast evaluation values from a plurality of image data items obtained by imaging a subject a multiple number of times at a set exposure time while moving a focus lens in an optical axis direction within a search range, focusing position calculating unit configured to calculate a focusing position from focus positions at the time of imaging the subject a multiple number of times and the contrast evaluation values calculated by the contrast evaluation value calculating unit, detection unit configured to detect atmospheric fluctuation, and exposure time setting unit configured to set an exposure time in a case where the detection unit detects the atmospheric fluctuation so as to be longer than an exposure time in a case where the detection unit does not detect the atmospheric fluctuation.
-
公开(公告)号：US09819853B2
公开(公告)日：2017-11-14
申请号：US15233621
申请日：2016-08-10
Applicant: FUJIFILM Corporation
Inventor： Koichi Tanaka
CPC classification number: H04N5/23212 , G02B7/34 , G03B13/36 , H04N5/3656 , H04N5/3696 , H04N9/045
Abstract: A phase difference AF processing unit (19) compares subject images between a region R1 and a region Rj (j=2 to m) in an AF area (53), and determines a phase difference detection pixel (52A, 52B) as a detection signal addition target with respect to a phase difference detection pixel (52A, 52B) in the region R1 among phase difference detection pixels (52A, 52B) in the region Rj. Further, the phase difference AF processing unit (19) adds up detection signals with respect to the phase difference detection pixels (52A, 52B) in the region R1 and the phase difference detection pixels (52A, 52B) which are addition targets, and generates a defocus amount (Df1) from a result of a correlation operation using detection signals after addition. A system control unit (11) drives a focus lens according to the defocus amount (Df1) to perform a focusing control.
-
公开(公告)号：US09794471B2
公开(公告)日：2017-10-17
申请号：US15202114
申请日：2016-07-05
Applicant: FUJIFILM Corporation
Inventor： Koichi Tanaka
CPC classification number: H04N5/23212 , G02B7/285 , G02B7/34 , G02B7/365 , G03B13/36 , H04N5/3696 , H04N9/045
Abstract: The present invention provides an imaging device and a focusing control method capable of reliably preventing the accuracy of a focusing control from being lowered even in a case where a signal level of a phase difference detection pixel is low. A system control unit (11) calculates, using detections signals of phase difference detection pixels (52A, 52B) obtained by each of two instances of imaging which are consecutively performed by an imaging element (5), first defocus amounts for each instance of imaging, adds up detection signals corresponding to the detection signals of the phase difference detection pixels (52), among captured image signals obtained by each of two instances of imaging, calculates a second defocus amount using signals after addition, and compares the plural of first defocus amounts and the second defocus amount to determine whether to perform a focusing control based on the second defocus amount.
-
-
-
-
-
-
-
-
-
Search Results
72
records
(took 0.025 seconds)
