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1.发明授权公开(公告)号：US11303828B2
公开(公告)日：2022-04-12
申请号：US17127699
申请日：2020-12-18
Inventor： Takamasa Ando , Tsuguhiro Korenaga , Toshiya Fujii
Abstract: An imaging apparatus including a light source that, in operation, emits pulsed light to a measurement target; a diffusion member that is disposed between the light source and the measurement target, and diffuses the pulsed light; an image sensor that includes at least one pixel, the at least one pixel including a photodiode and a charge accumulator that, in operation, accumulates signal charge from the photodiode; and a control circuit that, in operation, controls the image sensor. The control circuit causes the image sensor to start to accumulate the signal charge with the charge accumulator in a falling period of a returned pulsed light which is returned from the measurement target to the image sensor due to the emission of the pulsed light, the falling period being a period from start to end of a decrease of an intensity of the returned pulsed light.
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公开(公告)号：US11079276B2
公开(公告)日：2021-08-03
申请号：US16245107
申请日：2019-01-10
Inventor： Toshiya Fujii , Takamasa Ando
IPC: G01J3/28 , G01N21/65 , A61B5/00 , G01J3/02 , G01N21/64 , G01N21/47 , G01J3/12 , G01B11/24 , G01S17/89
Abstract: An optical filter including filter regions arrayed two-dimensionally, in which the filter regions include a first region and a second region; a wavelength distribution of an optical transmittance of the first region has a first local maximum in a first wavelength band and a second local maximum in a second wavelength band that differs from the first wavelength band, and a wavelength distribution of an optical transmittance of the second region has a third local maximum in a third wavelength band that differs from each of the first wavelength band and the second wavelength band and a fourth local maximum in a fourth wavelength band that differs from the third wavelength band.
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公开(公告)号：US10397496B2
公开(公告)日：2019-08-27
申请号：US15610675
申请日：2017-06-01
Inventor： Tatsuya Nakamura , Toshiya Fujii , Masaaki Yanagida , Takamasa Ando
IPC: H04N7/18 , H04N5/33 , A61B1/04 , A61B1/06 , G06T7/20 , G06T11/60 , H04N5/225 , A61B5/00 , A61B5/1455 , H04N5/235 , A61B5/026 , G06T7/00 , H04N5/361 , A61B5/021 , A61B5/024 , A61B5/145 , A61B5/16
Abstract: An imaging device includes a light source, an image sensor, and a controller. Each pixel of the image sensor includes first and second accumulators and a discharger. The controller, while a component of light from the light source reflected by the surface of a target is incident on the image sensor, causes the accumulators to accumulate signal charge not discharged to the discharger, by setting the image sensor so that signal charge is discharged to the discharger, while a component having scattered inside the target is incident on the image sensor, causes the first accumulator to accumulate signal charge by setting the image sensor so that signal charge is not discharged to the discharger and signal charge is accumulated in the first accumulator, and causes the image sensor to generate first and second signals that are respectively based on signal charge accumulated in the first and second accumulators.
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4.发明授权公开(公告)号：US10334188B2
公开(公告)日：2019-06-25
申请号：US16131605
申请日：2018-09-14
Inventor： Takamasa Ando , Tsuguhiro Korenaga , Toshiya Fujii
IPC: H04N9/47 , H04N7/18 , H04N5/33 , A61B5/00 , A61B5/1455 , A61B5/026 , H04N5/355 , H04N5/353 , H04N5/225
Abstract: An imaging apparatus including a light source that, in operation, emits pulsed light to a measurement target; a diffusion member that is disposed between the light source and the measurement target, and diffuses the pulsed light; an image sensor that includes at least one pixel, the at least one pixel including a photodiode and a charge accumulator that, in operation, accumulates signal charge from the photodiode; and a control circuit that, in operation, controls the image sensor. The control circuit causes the image sensor to start to accumulate the signal charge with the charge accumulator in a falling period of a returned pulsed light which is returned from the measurement target to the image sensor due to the emission of the pulsed light, the falling period being a period from start to end of a decrease of an intensity of the returned pulsed light.
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5.发明申请公开(公告)号：US20210152755A1
公开(公告)日：2021-05-20
申请号：US17127699
申请日：2020-12-18
Inventor： Takamasa Ando , Tsuguhiro Korenaga , Toshiya Fujii
Abstract: An imaging apparatus including a light source that, in operation, emits pulsed light to a measurement target; a diffusion member that is disposed between the light source and the measurement target, and diffuses the pulsed light; an image sensor that includes at least one pixel, the at least one pixel including a photodiode and a charge accumulator that, in operation, accumulates signal charge from the photodiode; and a control circuit that, in operation, controls the image sensor. The control circuit causes the image sensor to start to accumulate the signal charge with the charge accumulator in a falling period of a returned pulsed light which is returned from the measurement target to the image sensor due to the emission of the pulsed light, the falling period being a period from start to end of a decrease of an intensity of the returned pulsed light.
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Patent Agency Ranking
6.发明授权公开(公告)号：US10911697B2
公开(公告)日：2021-02-02
申请号：US16844753
申请日：2020-04-09
Inventor： Takamasa Ando , Tsuguhiro Korenaga , Toshiya Fujii
Abstract: An imaging apparatus including a light source that, in operation, emits pulsed light to a measurement target; a diffusion member that is disposed between the light source and the measurement target, and diffuses the pulsed light; an image sensor that includes at least one pixel, the at least one pixel including a photodiode and a charge accumulator that, in operation, accumulates signal charge from the photodiode; and a control circuit that, in operation, controls the image sensor. The control circuit causes the image sensor to start to accumulate the signal charge with the charge accumulator in a falling period of a returned pulsed light which is returned from the measurement target to the image sensor due to the emission of the pulsed light, the falling period being a period from start to end of a decrease of an intensity of the returned pulsed light.
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7.发明授权公开(公告)号：US10652482B2
公开(公告)日：2020-05-12
申请号：US16410900
申请日：2019-05-13
Inventor： Takamasa Ando , Tsuguhiro Korenaga , Toshiya Fujii
Abstract: An imaging apparatus including a light source that, in operation, emits pulsed light to a measurement target; a diffusion member that is disposed between the light source and the measurement target, and diffuses the pulsed light; an image sensor that includes at least one pixel, the at least one pixel including a photodiode and a charge accumulator that, in operation, accumulates signal charge from the photodiode; and a control circuit that, in operation, controls the image sensor. The control circuit causes the image sensor to start to accumulate the signal charge with the charge accumulator in a falling period of a returned pulsed light which is returned from the measurement target to the image sensor due to the emission of the pulsed light, the falling period being a period from start to end of a decrease of an intensity of the returned pulsed light.
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公开(公告)号：US10602971B2
公开(公告)日：2020-03-31
申请号：US15417309
申请日：2017-01-27
Inventor： Naomi Satoi , Teruhiro Shiono , Toshiya Fujii
IPC: A61B5/16 , A61B5/00 , A61B5/024 , A61B5/107 , A61B5/021 , A61B5/026 , A61B5/1455 , A61B5/18 , G05B15/02
Abstract: A biological information detection device according to an aspect of the present disclosure includes: a light source that, in operation, emits irradiation light for irradiating a test portion of a subject; a light detector that, in operation, detects light reached from the test portion and that outputs an electrical signal corresponding to the light; and a calculation circuit that, in operation, generates a signal of biological information related to a blood flow in a target area in the test portion based on the electrical signal. The light detector is an image sensor. The electrical signal includes an image signal obtained by the image sensor. The calculation circuit, in operation, detects a magnitude of an inclination of an orientation of the test portion with respect to a reference orientation by image recognition based on the image signal, and determines the target area according to the magnitude of the inclination of the orientation of the test portion.
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公开(公告)号：US10151835B2
公开(公告)日：2018-12-11
申请号：US15045851
申请日：2016-02-17
Inventor： Junji Ito , Tohru Yamada , Toshiya Fujii
Abstract: A distance measurement system includes: a signal generator which generates a light emission signal that instructs light emission and an exposure signal that instructs exposure of reflected light; a first illumination and distance measurement light source which receives the light emission signal and, according to the signal received, performs the light emission for illumination without a purpose of distance measurement and the light emission with the purpose of distance measurement using the reflected light; an imaging device which receives the exposure signal, performs the exposure according to the signal received, and obtains an amount of light exposure of the reflected light; and a calculator which calculates distance information using the amount of light exposure and outputs the distance information, wherein the distance measurement system has operation modes including an illumination mode and a first distance measurement mode.
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10.发明授权公开(公告)号：US10104315B2
公开(公告)日：2018-10-16
申请号：US15175340
申请日：2016-06-07
Inventor： Takamasa Ando , Tsuguhiro Korenaga , Toshiya Fujii
IPC: H04N7/18 , H04N9/47 , H04N5/33 , H04N5/353 , H04N5/355 , A61B5/026 , A61B5/1455 , A61B5/00 , H04N5/225
Abstract: An imaging apparatus according to an aspect of the present disclosure includes a light source that, in operation, emits pulsed light to a living body, an image sensor that includes at least one pixel including a photodiode and charge accumulators that, in operation, accumulate signal charge from the photodiode, and a control circuit that, in operation, controls the image sensor. The charge accumulators, in operation, accumulate the signal charge corresponding to a component of the pulsed light scattered inside the living body.
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