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公开(公告)号：US20190312080A1
公开(公告)日：2019-10-10
申请号：US16447147
申请日：2019-06-20
Inventor： KATSUYA NOZAWA
IPC: H01L27/148 , H01L27/142 , H04N5/235 , G06T7/73
Abstract: An imaging system includes an imaging optical system, an imaging device, an actuator, and control circuitry. The actuator changes a relative position of a plurality of pixel cells and an image of a subject. The pixel cells have variable sensitivity, and include a photoelectric converter and a charge accumulation region. The control circuitry sets the relative position to a first position, and also sets the sensitivity of each pixel cell to a first sensitivity. A first signal charge obtained at the photoelectric converter is accumulated in the charge accumulation region. The relative position is set to a second position different from the first position, and also the sensitivity of each pixel cell is set to a second sensitivity different from the first sensitivity. A second signal charge obtained at the photoelectric converter is accumulated in the charge accumulation region in addition to the first signal charge.
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12.发明申请公开(公告)号：US20190007594A1
公开(公告)日：2019-01-03
申请号：US16124435
申请日：2018-09-07
Inventor： SATOSHI SATO , SANSHIRO SHISHIDO , KATSUYA NOZAWA , TAKEO AZUMA , MASAAKI YANAGIDA , TAKEYOSHI TOKUHARA , KUNIO NOBORI
Abstract: A three-dimensional motion obtaining apparatus includes: a light source; a charge amount obtaining circuit that includes pixels and obtains, for each of the pixels, a first charge amount under a first exposure pattern and a second charge amount under a second exposure pattern having an exposure period that at least partially overlaps an exposure period of the first exposure pattern; and a processor that controls a light emission pattern for the light source, the first exposure pattern, and the second exposure pattern. The processor estimates a distance to a subject for each of the pixels on the basis of the light emission pattern and on the basis of the first charge amount and the second charge amount of each of the pixels obtained by the charge amount obtaining circuit, and estimates an optical flow for each of the pixels on the basis of the first exposure pattern, the second exposure pattern, and the first charge amount and the second charge amount obtained by the charge amount obtaining circuit.
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13.发明公开公开(公告)号：US20240127574A1
公开(公告)日：2024-04-18
申请号：US18534636
申请日：2023-12-10
Inventor： TAKAYUKI KIYOHARA , MOTOKI YAKO , KATSUYA NOZAWA
IPC: G06V10/60 , G06T7/50 , G06V10/74 , G06V10/764 , G06V20/70
CPC classification number: G06V10/60 , G06T7/50 , G06V10/761 , G06V10/764 , G06V20/70 , G06T2207/10036
Abstract: There is provided an imaging system including: a filter array that includes filters having different transmission spectra; an image sensor that images light passing through the filter array and generates image data; and a processing circuit, in which the processing circuit acquires luminance pattern data generated on the basis of subject data that includes spectral information of at least one substance, the luminance pattern data being generated by predicting a luminance pattern detected when the substance is imaged by the image sensor, acquires first image data obtained by imaging a target scene by the image sensor, and generates output data regarding whether the substance is present in the target scene by comparing the luminance pattern data with the first image data.
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公开(公告)号：US20240073495A1
公开(公告)日：2024-02-29
申请号：US18499287
申请日：2023-11-01
Inventor： KATSUYA NOZAWA , MOTOKI YAKO , TAKAYUKI KIYOHARA
Abstract: An imaging apparatus includes: at least one light source that emits excitation light for irradiating an object including at least one light emitter; a coding filter array including filters whose transmission spectra differ from each other; an image sensor that captures an image of object light, which is generated by irradiating the object with the excitation light, through the coding filter array and generates compressed image data; and a processing circuit that generates hyperspectral image data based on the compressed image data. The object light includes emission light, which is produced by the at least one light emitter by absorbing the excitation light, and reflection light of the excitation light reflected by the object. The filters include two filters whose transmission spectra differ from each other. A spectrum of the excitation light overlaps a transmission region in the transmission spectrum of each of the two filters.
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公开(公告)号：US20210225939A1
公开(公告)日：2021-07-22
申请号：US17219954
申请日：2021-04-01
Inventor： KATSUYA NOZAWA , TAKEYOSHI TOKUHARA , NOZOMU MATSUKAWA , SANSHIRO SHISHIDO
Abstract: An imaging device includes a pixel electrode, a counter electrode that faces the pixel electrode, a first photoelectric conversion layer that is located between the pixel electrode and the counter electrode and that generates first signal charge, a second photoelectric conversion layer that is located between the first photoelectric conversion layer and the pixel electrode and that generates second signal charge, a first barrier layer that is located between the first photoelectric conversion layer and the second photoelectric conversion layer and that forms a first heterojunction barrier against the first signal charge in the first photoelectric conversion layer, and a charge accumulator that is electrically connected to the pixel electrode and that accumulates the first signal charge and the second signal charge.
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Patent Agency Ranking
公开(公告)号：US20210202558A1
公开(公告)日：2021-07-01
申请号：US17185129
申请日：2021-02-25
Inventor： SANSHIRO SHISHIDO , SHINICHI MACHIDA , TAKEYOSHI TOKUHARA , KATSUYA NOZAWA
IPC: H01L27/146 , H01L31/0352 , H01L31/0384 , G02B5/20
Abstract: A light sensor includes a photoelectric conversion layer and a long-pass filter that is disposed above the photoelectric conversion layer. The photoelectric conversion layer has a spectral sensitivity characteristic having a first peak at a first wavelength that is longer than a cut-on wavelength of the long-pass filter, and a spectral sensitivity of the photoelectric conversion layer at the cut-on wavelength is greater than or equal to 0% and less than or equal to 50% of a spectral sensitivity of the photoelectric conversion layer at the first wavelength.
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公开(公告)号：US20210043861A1
公开(公告)日：2021-02-11
申请号：US17080938
申请日：2020-10-27
Inventor： KATSUYA NOZAWA
Abstract: A photoelectric converter includes a first electrode containing a transparent conductive material, a second electrode, and a multilayer body that is positioned between the first electrode and the second electrode, and that has a photoelectric conversion function. The multilayer body includes a first layer and a second layer positioned between the first layer and the second electrode. The first layer absorbs light in a first wavelength band of 360 nm or longer and transmits light in a second wavelength band, the second wavelength band including wavelengths longer than wavelengths included in the first wavelength band. The second layer absorbs the light in the second wavelength band. The multilayer body substantially does not have sensitivity for photoelectric conversion in the first wavelength band and has sensitivity for photoelectric conversion in the second wavelength band.
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18.发明申请公开(公告)号：US20180331293A1
公开(公告)日：2018-11-15
申请号：US15961975
申请日：2018-04-25
Inventor： KAZUNORI HAYASHIDA , NOZOMU MATSUKAWA , KATSUYA NOZAWA
IPC: H01L51/00
CPC classification number: H01L51/0025 , H01L51/0007 , H01L51/0046 , H01L51/0048 , H01L51/424
Abstract: A method for producing the photoelectric conversion element includes, in carbon nanotubes including semiconducting carbon nanotubes having different chiralities from each other and metallic carbon nanotubes, changing a chirality distribution in the semiconducting carbon nanotubes, separating the carbon nanotubes into the semiconducting carbon nanotubes and the metallic carbon nanotubes after changing the chirality distribution, covering the semiconducting carbon nanotubes with a polymer after performing separating, and forming a photoelectric conversion film including the semiconducting carbon nanotubes between a pair of electrodes after performing covering with the polymer.
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公开(公告)号：US20240302511A1
公开(公告)日：2024-09-12
申请号：US18668290
申请日：2024-05-20
Inventor： SHINYA OKAMOTO , KATSUYA NOZAWA , TASUKU NAKAMURA , YASUHISA INADA
CPC classification number: G01S7/4972 , G01S7/4818 , G01S7/4876 , G01S7/493
Abstract: A distance measurement system includes a light source, a wavelength conversion module that generates a harmonic G1 with which a target S is to be irradiated as guide light by converting a wavelength of a part of a fundamental wave L1 of light L0 emitted from the light source, a photodetector that detects reflected light L1r generated by reflection, on the target S, the fundamental wave L1 that has passed through the wavelength conversion module, and a signal processing unit that calculates a distance to the target S on the basis of a detection result of the photodetector.
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公开(公告)号：US20220238576A1
公开(公告)日：2022-07-28
申请号：US17722452
申请日：2022-04-18
Inventor： KATSUYA NOZAWA
IPC: H01L27/146
Abstract: An imaging device includes pixels. Each of the pixels includes a first single-crystal semiconductor layer transmitting light, a first electrode, and a photoelectric conversion layer in contact with the first single-crystal semiconductor layer. The photoelectric conversion layer is positioned between the first single-crystal semiconductor layer and the first electrode and absorbs the light. The first single-crystal semiconductor layer, the photoelectric conversion layer, and the first electrode are arranged in order mentioned such that the light after passing through the first single-crystal semiconductor layer is incident on the photoelectric conversion layer.
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