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公开(公告)号：US11627263B2
公开(公告)日：2023-04-11
申请号：US17528171
申请日：2021-11-16
Applicant: FUJIFILM Corporation
Inventor： Yasunobu Kishine , Shuji Ono , Kazuyoshi Okada
Abstract: Provided is an imaging apparatus that captures a multispectral image of four bands or more. An imaging apparatus (1) includes an imaging optical system (10), an image sensor (100), and a signal processing unit (200). The imaging optical system (10) includes a bandpass filter unit (16) of which at least one of aperture regions transmits light beams of a plurality of wavelength ranges, and a polarization filter unit (18) that polarizes the light beams transmitted through the bandpass filter unit (16) in a plurality of directions, in a vicinity of a pupil thereof. The image sensor (100) receives light beams transmitted through a plurality of types of spectral filter elements and a plurality of types of polarization filter elements. The signal processing unit (200) processes signals output from the image sensor (100) to generate a plurality of image signals. In the imaging apparatus (1), the number of transmission wavelength ranges of at least one of the aperture regions of the bandpass filter unit (16) is equal to or less than the number of transmission wavelength ranges of the spectral filter element.
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公开(公告)号：US10852535B2
公开(公告)日：2020-12-01
申请号：US16133038
申请日：2018-09-17
Applicant: FUJIFILM Corporation
Inventor： Yukiko Nagatoshi , Shunsuke Miyagishima , Kazuyoshi Okada , Ukyo Tomioka , Masaru Yonezawa , Yasutaka Shimada
IPC: G02B27/00 , G02B13/00 , G02B9/64 , G02B13/04 , G02B15/177
Abstract: The imaging lens includes at least one negative lens that satisfies predetermined Conditional Expressions (1) to (3) indicating conditions in which dispersion is relatively low and refractive index is high while having a negative rate of change of the refractive index. A positive lens having a largest Abbe number at the d line among positive lenses included in the imaging lens satisfies predetermined Conditional Expressions (4) and (5).
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公开(公告)号：US10437016B2
公开(公告)日：2019-10-08
申请号：US15412077
申请日：2017-01-23
Applicant: FUJIFILM Corporation
Inventor： Takashi Kunugise , Kazuyoshi Okada , Michio Cho
Abstract: The imaging lens includes, in order from the object side, a first lens group that remains stationary during focusing; a diaphragm; and a positive second lens group that moves to the object side during focusing from a long range to a close range. The first lens group includes, in order from the object side: a negative meniscus lens that has an absolute value of a radius of curvature of an image side surface smaller than that of an object side surface, a negative lens, a positive lens, and a negative lens. The second lens group includes five or less lenses, and includes: a positive Z lens that is formed continuously in order from a most image side; a negative Y lens that has an absolute value of a radius of curvature of an object side surface smaller than that of an image side surface; and a positive X lens.
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公开(公告)号：US10401593B2
公开(公告)日：2019-09-03
申请号：US15412766
申请日：2017-01-23
Applicant: FUJIFILM Corporation
Inventor： Toshihiro Aoi , Takashi Kunugise , Kazuyoshi Okada , Michio Cho
Abstract: The imaging lens includes, in order from the object side, a first lens group that remains stationary during focusing; a diaphragm; and a positive second lens group that moves to the object side during focusing from a long range to a close range. The second lens group includes a positive Z lens that is formed continuously in order from a most image side, a negative Y lens that has an absolute value of a radius of curvature of an object side surface smaller than an absolute value of a radius of curvature of an image side surface, a positive X lens, and a negative W lens that has an absolute value of a radius of curvature of an image side surface smaller than that of an object side surface. The imaging lens satisfies a conditional expression about of the radii of curvature of the X lens and the W lens.
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公开(公告)号：US12181663B2
公开(公告)日：2024-12-31
申请号：US18153359
申请日：2023-01-12
Applicant: FUJIFILM Corporation
Inventor： Kazuyoshi Okada , Yasunobu Kishine , Atsushi Kawanago
Abstract: An imaging device, an adjustment method, and an adjustment program can acquire multispectral images having good image quality. The imaging device is disposed on an image side of another optical system, and includes a multispectral camera that acquires images in a plurality of wavelength ranges, a field lens that relays the other optical system to the multispectral camera, and an adjustment mechanism that adjusts a conjugate relationship between an emission pupil position of the other optical system and an incident pupil position of the multispectral camera. The multispectral camera includes: a wavelength polarizing filter unit that includes an optical member disposed at a pupil position or near the pupil position and including a plurality of aperture regions having different centroids, a plurality of optical filters arranged in the aperture regions, and a plurality of polarizing filters arranged in the aperture regions; an imaging element; and a processor.
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Patent Agency Ranking
公开(公告)号：US11726389B2
公开(公告)日：2023-08-15
申请号：US17862408
申请日：2022-07-12
Applicant: FUJIFILM Corporation
Inventor： Atsushi Kawanago , Kazuyoshi Okada , Yasunobu Kishine , Yuya Hirakawa
IPC: H04N5/225 , G03B9/04 , G02B5/20 , G02B27/28 , G03B11/00 , H04N23/55 , H04N23/71 , H04N23/75 , H04N25/11
CPC classification number: G03B9/04 , G02B5/201 , G02B27/288 , G03B11/00 , H04N23/55 , H04N23/71 , H04N23/75 , H04N25/11
Abstract: Provided are a lens device, an imaging apparatus, an optical member, an imaging method, and an imaging program that are used to acquire multispectral images having a good image quality. According to one aspect, a lens device includes: an imaging optical system that includes a lens forming an optical image of a subject; and an optical member that is disposed near a pupil of the imaging optical system in a state where an optical axis of the optical member coincides with an optical axis of the imaging optical system, and includes a frame that includes a plurality of aperture regions, a plurality of optical filters that are disposed in at least one of the plurality of aperture regions and include two or more optical filters transmitting light having at least some wavelength ranges different from each other, and a plurality of polarizing filters that are disposed in at least one of the plurality of aperture regions and have different polarization directions. The amount of light emitted from the imaging optical system is changeable in the plurality of aperture regions.
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公开(公告)号：US11269249B2
公开(公告)日：2022-03-08
申请号：US16795546
申请日：2020-02-19
Applicant: FUJIFILM Corporation
Inventor： Kazuyoshi Okada , Kenkichi Hayashi , Yasunobu Kishine
Abstract: The optical system having an imaging lens that images a first-plane and a second-plane which are discontinuous includes: a first-optical-system that images the first-plane; a second-optical-system that images the second-plane; and a common-optical-system that forms a subject image, which is incident through the first-optical-system, on the first-light-receiving-region of the image sensor and forms a subject image, which is incident through the second-optical-system, on the second-light-receiving-region of the image sensor. In the optical system, an angle of view, at which imaging is performed by the first-optical-system and the common-optical-system, overlaps with an angle of view, at which imaging is performed by the second-optical-system and the common-optical-system. The optical system includes a first focus adjustment unit that adjusts the focus of the optical system composed of the first-optical-system and the common-optical-system and a second focus adjustment unit that adjusts the focus of the optical system composed of the second-optical-system and the common-optical-system.
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公开(公告)号：US10788653B2
公开(公告)日：2020-09-29
申请号：US16130141
申请日：2018-09-13
Applicant: FUJIFILM Corporation
Inventor： Kazuyoshi Okada , Takashi Kunugise
Abstract: The imaging lens consists of, in order from the object side, a positive first lens group that has a positive refractive power and remains stationary during focusing, and a second lens group that moves toward an image side during focusing from a distant object to a close-range object. The first lens group has, successively in order from a position closest to the image side, a first-b sub-lens group having a positive refractive power, and an aperture stop. The imaging lens satisfies predetermined conditional expressions relating to the first-b sub-lens group, the second lens group, and the like.
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公开(公告)号：US10690893B2
公开(公告)日：2020-06-23
申请号：US16130123
申请日：2018-09-13
Applicant: FUJIFILM Corporation
Inventor： Takashi Kunugise , Kazuyoshi Okada
Abstract: The imaging lens consists of, in order from the object side, a first lens group, an aperture stop, a second lens group having a positive refractive power. During focusing from a distant object to a close-range object, the first lens group remains stationary, and the aperture stop and the second lens group integrally move to the object side. The imaging lens satisfies predetermined conditional expressions relating to a focal length of the whole system, a focal length of the first lens group, a principal point position of the second lens group, a focal length of the second lens group, a back focal length, and the like.
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公开(公告)号：US09645364B2
公开(公告)日：2017-05-09
申请号：US15070690
申请日：2016-03-15
Applicant: FUJIFILM Corporation
Inventor： Kazuyoshi Okada , Ping Sun
CPC classification number: G02B13/06 , G02B13/006
Abstract: An imaging lens consists of, in order from the object side, a front group having a negative refractive power, a stop, and a rear group having a positive refractive power. The front group consist of a front-group negative lens group that consists of three negative lenses and has a negative refractive power, and a front-group positive lens group that includes one positive lens and one negative lens and has a positive refractive power, where the negative lens is disposed at the most image-side position. The rear group includes two positive lenses and two negative lenses. The imaging lens satisfies condition expression (1): 0.95
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