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公开(公告)号：US10243318B2
公开(公告)日：2019-03-26
申请号：US15275697
申请日：2016-09-26
Applicant: FUJIFILM Corporation
Inventor： Dai Murakoshi , Kaku Irisawa , Takuji Tada
Abstract: In a laser device and a photoacoustic measurement device including the laser device, the intensity of light at each wavelength made independently controllable. The laser device includes a laser medium which has oscillation wavelengths at a first wavelength and a second wavelength with higher light emission efficiency than at the first wavelength, an excitation section, a first resonator, a second resonator, a Q-value change unit, and a control section. The control section oscillates light having the first wavelength through Q switching when a first delay time has elapsed after the excitation of the laser medium has been started in a case where the oscillation wavelength is the first wavelength, and oscillates light having the second wavelength through Q switching when a second delay time has elapsed after the excitation of the laser medium has been started in a case where the oscillation wavelength is the second wavelength.
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公开(公告)号：US11313801B2
公开(公告)日：2022-04-26
申请号：US16581694
申请日：2019-09-24
Applicant: FUJIFILM Corporation
Inventor： Kohei Ota , Takuji Tada
IPC: G01N21/64
Abstract: The sample imaging apparatus includes: a housing that forms a closed space; a transparent tray on which a sample is placed in the housing; a plane light source that is formed by using a flat light guide plate, which propagates light emitted by a light emitting element in a plane direction, so as to illuminates the sample with illumination light through the tray in the housing; a lens that is disposed in the housing so as to face the plane light source with the tray interposed between the lens and the plane light source and is used for imaging the sample; and an imaging control unit that adjusts a focal length of the lens and performs imaging in a case of imaging the single sample.
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Patent Agency Ranking
公开(公告)号：US10436715B2
公开(公告)日：2019-10-08
申请号：US16112048
申请日：2018-08-24
Applicant: FUJIFILM Corporation
Inventor： Takuji Tada
Abstract: Provided is a fluorescence reading device capable of narrowing a distance between a lens unit and an observation object to a distance according to a focal length of a refractive index distribution type lens and focusing fluorescence emitted from the observation object on detecting unit without blurring. Optical fiber sub-bundles equivalent to a light guide unit are buried in lens holding parts of a lens unit. Emission ends of the optical fiber sub-bundles are exposed to upper surfaces of the lens holding parts that face the observation object holding unit. The optical fiber sub-bundles guide the excitation light emitted from the light source and radiate the guided excitation light toward the surface of an observation object that faces the lens unit.
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公开(公告)号：US10276998B2
公开(公告)日：2019-04-30
申请号：US15266709
申请日：2016-09-15
Applicant: FUJIFILM Corporation
Inventor： Kazuhiro Hirota , Hiroyasu Ishii , Takuji Tada
Abstract: In a solid-state laser device and a photoacoustic measurement device including the solid-state laser device, the distance between a laser rod and a flash lamp is narrowed. A shielding lid shields mirrors and an optical path of laser light from the outside. A first portion of a frame body of a laser chamber is exposed from the shielding lid. A flash lamp stored in the frame body of the laser chamber is able to be removed from and inserted into the first portion of the frame body. A thin film portion having a thickness smaller than the thickness of other portions of the shielding lid is provided in at least a part of a region of the shielding lid covering the optical path of a light beam on the outside in a longitudinal direction from the first portion of the frame body of the laser chamber.
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公开(公告)号：US09899788B2
公开(公告)日：2018-02-20
申请号：US15062578
申请日：2016-03-07
Applicant: FUJIFILM Corporation
Inventor： Koki Nakabayashi , Takuji Tada
CPC classification number: H01S3/025 , G01N21/1702 , G01N2201/06113 , H01S3/042 , H01S3/0815 , H01S3/092 , H01S3/0931 , H01S3/115
Abstract: Disclosed are a solid-state laser device having an advantage of achieving simplification of a configuration and reduction in size, and a photoacoustic measurement device. In a solid-state laser device which accommodates a solid-state laser medium and an excitation light source having a rod-shaped portion, the excitation light source is provided to be pulled out of a laser chamber. An optical element which bends light is provided at a position separated from the rod-shaped portion such that at least a part of the optical element and at least a part of the rod-shaped portion are at the same position in the longitudinal direction of the rod-shaped portion. One resonator mirror is disposed at a position where bent light is incident. Optical components between the optical element and the resonator mirror are provided at positions separated from a path along which the excitation light source is pulled out.
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公开(公告)号：US11372241B2
公开(公告)日：2022-06-28
申请号：US16581710
申请日：2019-09-24
Applicant: FUJIFILM Corporation
Inventor： Takuji Tada
Abstract: The sample imaging apparatus includes: an imaging unit that images a sample by using an achromatic lens in which longitudinal chromatic aberration is corrected in a wavelength range of chemiluminescent light of the sample; an excitation light source (the first epi-illumination light source and/or the second epi-illumination light source) that irradiates the sample with excitation light for causing the sample to emit fluorescent light; and an imaging control unit that adjusts a focal length of the achromatic lens in each imaging in a case of imaging the single sample a plurality of times by changing a wavelength range of the fluorescent light emitted by the sample, and performs imaging in a wavelength order of the fluorescent light used for the imaging.
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公开(公告)号：US08767916B2
公开(公告)日：2014-07-01
申请号：US14057836
申请日：2013-10-18
Applicant: FUJIFILM Corporation
Inventor： Atsushi Hashimoto , Takuji Tada , Dai Murakoshi
IPC: G01N23/04
CPC classification number: A61B6/484 , A61B6/4035 , A61B6/4291
Abstract: An X-ray imaging apparatus comprises a first grid, a second grid, and an X-ray image detector. The first grid passes X-rays emitted from an X-ray source and produces a first periodic pattern image. The second grid opposes the first grid. The second grid partly blocks the first periodic pattern image and produces a second periodic pattern image with moiré fringes. The X-ray image detector detects the second periodic pattern image and produces image data. The X-ray image detector has pixels arranged in two dimensions in X and Y directions. The M pixels arranged in the Y direction form one group. The group is shifted in the Y direction by the number of the pixels less than M each time. A phase of an intensity modulated signal, composed of pixel values of the pixels in the each shifted group, is calculated. Thereby a differential phase image is produced.
Abstract translation: X射线成像装置包括第一格栅，第二格栅和X射线图像检测器。 第一格栅通过从X射线源发射的X射线并产生第一周期性图案图像。 第二个网格反对第一个网格。 第二格栅部分地阻挡第一周期性图案图像，并产生具有莫尔条纹的第二周期性图案图像。 X射线图像检测器检测第二周期性图案图像并产生图像数据。 X射线图像检测器具有在X和Y方向上二维排列的像素。 以Y方向排列的M个像素形成一组。 该组在Y方向移动每次小于M的像素数。 计算由每个移位组中的像素的像素值组成的强度调制信号的相位。 从而产生差分相位图像。
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