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公开(公告)号：US20220415970A1
公开(公告)日：2022-12-29
申请号：US17821816
申请日：2022-08-24
Inventor： KATSUYA NOZAWA
Abstract: An image sensor includes a function layer including a photoelectric conversion region containing a plurality of semiconductor-type carbon nanotubes; a transparent electrode that collects first electric charges that are positive electric charges or negative electric charges, the positive electric charges or the negative electric charges being generated in the photoelectric conversion region upon entry of light; a first collection electrode that collects second electric charges having a polarity opposite to the first electric charges among the positive electric charges and the negative electric charges; a second collection electrode that collects the second electric charges; a first control electrode that controls movement of the second electric charges toward the first collection electrode; a second control electrode that controls movement of the second electric charges toward the second collection electrode; and an electric charge accumulator in which the second electric charges collected by the first collection electrode are accumulated.
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公开(公告)号：US20220336745A1
公开(公告)日：2022-10-20
申请号：US17809026
申请日：2022-06-27
Inventor： NOZOMU MATSUKAWA , KATSUYA NOZAWA , SHINICHI MACHIDA , SANSHIRO SHISHIDO
Abstract: An organic device includes at least one electrode, an insulating layer adjacent to the at least one electrode in a plan view, and an organic layer that is continuously in contact with an upper surface of the at least one electrode and an upper surface of the insulating layer. The organic layer contains a polymer of an organic material. The organic material contains a basic molecular skeleton and a polymerizable functional group. In the polymer, the organic material is polymerized through the polymerizable functional group.
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公开(公告)号：US20210202551A1
公开(公告)日：2021-07-01
申请号：US17204851
申请日：2021-03-17
Inventor： KATSUYA NOZAWA , TAKEYOSHI TOKUHARA , NOZOMU MATSUKAWA , SANSHIRO SHISHIDO
IPC: H01L27/146
Abstract: An imaging device includes a pixel electrode, a counter electrode, a first quantum dot that includes a first core which generates first signal charge and a first shell, a second quantum dot that includes a second core which generates second signal charge and a second shell. In a case where the potential difference between the pixel electrode and the counter electrode is a first potential difference, the first signal charge does not pass through the first shell and is held in the first core and the second signal charge passes through the second shell and is collected by the pixel electrode. In a case where the potential difference between the pixel electrode and the counter electrode is a second potential difference which is larger than the first potential difference, the first signal charge passes through the first shell and is collected by the pixel electrode.
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公开(公告)号：US20230401303A1
公开(公告)日：2023-12-14
申请号：US18454244
申请日：2023-08-23
Inventor： KATSUYA NOZAWA
IPC: G06F21/32 , G06V10/141 , G06V40/12
CPC classification number: G06F21/32 , G06V10/141 , G06V40/1341 , G06V40/1371
Abstract: A contactless authentication system includes: at least one illumination apparatus that projects illumination light onto a portion of a hand, the portion being not in contact of an object, the illumination light containing a light component in a wavelength range greater than or equal to 1380 nm; and an imaging apparatus that obtains at least one selected from the group consisting of a fingerprint image and a palm print image as authentication information by imaging the light component in the wavelength range in reflected light generated by reflection of the illumination light from the portion of the hand.
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公开(公告)号：US20220216440A1
公开(公告)日：2022-07-07
申请号：US17700941
申请日：2022-03-22
Inventor： SHINICHI MACHIDA , KATSUYA NOZAWA , SANSHIRO SHISHIDO
Abstract: A photoelectric conversion element includes: a first electrode; a second electrode; and a photoelectric conversion layer disposed between the first electrode and the second electrode and containing semiconducting carbon nanotubes and a first material that functions as a donor or an acceptor for the semiconducting carbon nanotubes. The semiconducting carbon nanotubes have light absorption characteristics including a first absorption peak at a first wavelength, a second absorption peak at a second wavelength shorter than the first wavelength, and a third absorption peak at a third wavelength shorter than the second wavelength. The first material is transparent to light in at least one wavelength range selected from the group consisting of a first wavelength range between the first wavelength and the second wavelength and a second wavelength range between the second wavelength and the third wavelength.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20180374979A1
公开(公告)日：2018-12-27
申请号：US15993552
申请日：2018-05-30
Inventor： KATSUYA NOZAWA
IPC: H01L31/107 , H01L51/42 , H01L31/02 , H01L31/0352
CPC classification number: H01L31/1075 , H01L27/307 , H01L31/02027 , H01L31/035218 , H01L31/107 , H01L51/0036 , H01L51/0038 , H01L51/0043 , H01L51/0047 , H01L51/0048 , H01L51/0078 , H01L51/4213 , H01L51/44 , H01L2031/0344
Abstract: A photodetection element includes: a photoelectric conversion structure that contains a first material having an absorption coefficient higher than an absorption coefficient of monocrystalline silicon for light of a first wavelength, for which monocrystalline silicon exhibits absorption, and generates positive and negative charges by absorbing a photon; and an avalanche structure that includes a monocrystalline silicon layer, in which avalanche multiplication occurs as a result of injection of at least one selected from the group consisting of the positive and negative charges from the photoelectric conversion structure. The first material includes at least one selected from the group consisting of an organic semiconductor, a semiconductor-type carbon nanotube, and a semiconductor quantum dot.
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公开(公告)号：US20180047788A1
公开(公告)日：2018-02-15
申请号：US15729739
申请日：2017-10-11
Inventor： KATSUYA NOZAWA
Abstract: An imaging device includes: pixels arranged one-dimensionally or two-dimensionally, each of the pixels including an electrode that is electrically connected to the other pixels, a charge capturing unit that is separated from the other pixels, and a photoelectric conversion layer that is located between the electrode and the charge capturing unit, the photoelectric conversion layer being continuous among the pixels. The photoelectric conversion layer contains semiconductor carbon nanotubes, and one of a first substance and a second substance, the first substance having an electron affinity larger than that of the semiconducting carbon nanotubes, the second substance having a ionization energy smaller than that of the semiconductor carbon nanotubes.
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公开(公告)号：US20250096516A1
公开(公告)日：2025-03-20
申请号：US18964752
申请日：2024-12-02
Inventor： TASUKU NAKAMURA , SHINYA OKAMOTO , KAZUYA HISADA , YASUHISA INADA , KATSUYA NOZAWA
Abstract: A laser device includes a first optical comb laser, a second optical comb laser having a repetition frequency different from the first optical comb laser, a detection unit that detects interfering light between light output from the first optical comb laser and light output from the second optical comb laser and a control circuit. The control circuit controls at least one of a first CEO frequency, which is a carrier-envelope offset frequency of the first optical comb laser, or a second CEO frequency, which is a carrier-envelope offset frequency of the second optical comb laser, on the basis of output of the detection unit and thus changes a difference frequency, which is a difference between the first CEO frequency and the second CEO frequency.
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公开(公告)号：US20240119645A1
公开(公告)日：2024-04-11
申请号：US18540962
申请日：2023-12-15
Inventor： MOTOKI YAKO , TAKAYUKI KIYOHARA , KATSUYA NOZAWA
CPC classification number: G06T11/001 , G06T7/90 , H04N25/13 , G06T2200/24 , G06T2207/10024
Abstract: A signal processing method executed by a computer includes acquiring compressed image data including two-dimensional image information of a subject obtained by compressing hyperspectral information in a target wavelength region, acquiring reference spectrum data including information on one or more spectra associated with the subject, and generating, from the compressed image data, pieces of two-dimensional image data corresponding to designated wavelength bands decided on the basis of the reference spectrum data.
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公开(公告)号：US20230025030A1
公开(公告)日：2023-01-26
申请号：US17938515
申请日：2022-10-06
Inventor： KATSUYA NOZAWA
Abstract: An imaging system includes: a first light source that emits first light having a spectrum including discrete first frequency components arranged at first frequency intervals; a second light source that emits second light having a spectrum including discrete second frequency components arranged at second frequency intervals, the second frequency intervals being different from the first frequency intervals; a mixing optical system that mixes the first light and the second light to generate third light including at least one optical beat the intensity of which changes at a beat frequency expressed by the difference between at least one of the discrete first frequency components and at least one of the discrete second frequency components; an imaCCging element having a variable sensitivity in an exposure period; and a control circuit that changes the sensitivity of the imaging element at the beat frequency of the at least one optical beat.
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