Patents by Inventor Kento Nakamura
Kento Nakamura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11141686Abstract: A hollow cylindrical depth filter formed of fibers of a thermoplastic resin and having a thickness of a filter medium of 5 to 25 millimeters, in which the filter medium has a compression ratio of 0.2 or less when a load of 0.5 MPa is applied thereto, the filter medium has a fiber layer of at least three layers from a fluid inflow side toward an outflow side, porosity of the three layers are adjusted to a specific range, respectively, and intersection points of the fibers forming the filter medium are bonded, a mean interval between the intersection points is 2 to 100 times a mean fiber diameter of the fibers in a length direction, and a ratio of the mean fiber diameter on a surface on an upstream side to the mean fiber diameter on a surface on a downstream side of the filter medium is 0.9 to 1.2.Type: GrantFiled: July 26, 2017Date of Patent: October 12, 2021Assignees: JNC Corporation, JNC Filter Co., Ltd.Inventors: Kouichi Ozamoto, Kento Nakamura, Isamu Futase, Takumi Kojima
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Patent number: 11131850Abstract: A display apparatus includes a screen configured to form an intermediate image by being irradiated with light, a front windshield configured to display a virtual image by being irradiated with light forming the intermediated image, a reflection member configured to reflect light going out from the screen to the front windshield, and a rotation shaft configured to rotate the reflection member. The rotation shaft is tilted with respect to a pitch axis. The reflection member has notches formed thereon.Type: GrantFiled: February 2, 2018Date of Patent: September 28, 2021Assignee: RICOH COMPANY, LTD.Inventors: Kento Nakamura, Makoto Hirakawa, Hiromichi Atsuumi, Naoki Miyatake, Yuki Hayashi
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Publication number: 20210293954Abstract: An object detection apparatus includes a light-emitting unit configured to emit light; an optical scanning unit configured to rotate a deflection face to deflect the light used as scanning light; a light-projection optical system configured to project the scanning light to a detection region; a light-receiving optical system configured to receive light reflected or light scattered from an object existing within the detection region, respectively as reflection light and scattered light; and a light receiving unit configured to output at least a received-light signal of the reflection light or a received-light signal of the scattered light received by the light receiving system. A projection light center axis of the light-receiving optical system is non-parallel with respect to a focusing light center axis of the light-projection optical system.Type: ApplicationFiled: January 4, 2021Publication date: September 23, 2021Applicant: Ricoh Company, Ltd.Inventors: Kento NAKAMURA, Tadashi NAKAMURA, Jun KISHIWADA, Issei ABE
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Patent number: 11052339Abstract: A hollow cylindrical depth filter formed of fibers of a thermoplastic resin and having a thickness of a filter medium of 5 to 25 millimeters, in which the filter medium has a compression ratio of 0.2 or less when a load of 0.5 MPa is applied thereto, the filter medium has a fiber layer of at least three layers from a fluid inflow side toward an outflow side, porosity of the three layers are adjusted to a specific range, respectively, and intersection points of the fibers forming the filter medium are bonded, a mean interval between the intersection points is 2 to 100 times a mean fiber diameter of the fibers in a length direction, and a ratio of the mean fiber diameter on a surface on an upstream side to the mean fiber diameter on a surface on a downstream side of the filter medium is 0.9 to 1.2.Type: GrantFiled: July 26, 2017Date of Patent: July 6, 2021Assignees: JNC Corporation, JNC Filter Co., Ltd.Inventors: Kouichi Ozamoto, Kento Nakamura, Isamu Futase, Takumi Kojima
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Publication number: 20210173208Abstract: A display system 1A includes a light deflector 13 that scans the light beams that are emitted from a light-source device 11 in the main scanning direction and the sub-scanning direction orthogonal to the main scanning direction to form an intermediate image 40 on a screen 15, the screen 15 that disperses the light, a front windshield 50 that reflects the diverging light diverging from the screen 15, and a free-form surface mirror 30 that projects the diverging light diverging from the screen 15 towards the screen 15 to form a virtual image 45. The screen 15 is arranged so as to satisfy the condition in the following equation: S*O*(M+O)/(T*E*M)?1.Type: ApplicationFiled: December 28, 2018Publication date: June 10, 2021Inventor: Kento NAKAMURA
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Patent number: 11002264Abstract: A portable inflator (1) includes a motor (51), a compression mechanism (6) driven by the motor (51) to compress and discharge air, a main body housing (2), a leg (3), a grip (4), and a manually-operable trigger (41) provided on the grip. The main body housing (2) includes a battery mount part (251) for detachably mounting a battery (8), and houses the motor (51) and the compression mechanism (6). The leg (3) supports the main body housing (2) when a lower surface (31) of the leg (3) is disposed on a placement surface (P). The grip (4) is connected to the main body housing (2) and extends at least substantially parallel to the lower surface (31) of the leg (3). The motor (51) is driven in accordance with pulling of the trigger (41).Type: GrantFiled: June 17, 2019Date of Patent: May 11, 2021Assignee: MAKITA CORPORATIONInventors: Kosuke Komiya, Noriyuki Nishido, Kento Nakamura
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Publication number: 20210033861Abstract: A display system includes an optical element through which light diverges and an imaging optical system configured to form an image by projecting diverging light diverging through the optical element. In the display system, the image formed by the imaging optical system is visually recognized by a viewer, and a condition in an equation tan 0?(T×B)/(S×O) is satisfied, where ? denotes a divergence angle of the optical element, T denotes distance between the image forming optical system and the formed image, B denotes a range of an eye box that is an area through which the formed image can visually be recognized, S denotes distance between the formed image and a viewpoint of the viewer of the formed image, and O denotes distance between the optical element and the image forming optical system. In the above equation, each distance indicates length of an optical path that passes through a center of an image formed by the light when an object is observed from a reference eyepoint.Type: ApplicationFiled: April 15, 2019Publication date: February 4, 2021Inventors: Kento NAKAMURA, Shimpei OGINO, Yuuki SATOH
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Patent number: 10831021Abstract: A display device includes a screen to form an intermediate image with light; a concave mirror, and a first mirror disposed between the screen and the concave mirror. The first mirror includes a first reflective area to reflect the light emitted from the screen to the concave mirror; a second reflective area to reflect the light emitted from the concave mirror to an area where a virtual image is formed; and a common reflective area in which the first reflective area and the second reflective area at least partly overlap on each other.Type: GrantFiled: February 1, 2018Date of Patent: November 10, 2020Assignee: Ricoh Company, Ltd.Inventors: Kento Nakamura, Takehide Ohno, Hiromichi Atsuumi, Naoki Miyatake, Kazuhiro Fujita, Yuki Hayashi
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Publication number: 20200233215Abstract: A projection apparatus includes a light source configured to emit light; an image forming section configured to receive the light emitted from the light source and emit the light to form an image; an image-forming optical system configured to reflect the light of the formed image to form another image; a housing including the image forming section and the image-forming optical system, the housing configured to transmit the light reflected by the image-forming optical system; and a positioner attached to the housing, the positioner configured to position and hold each of the image forming section and the image-forming optical system.Type: ApplicationFiled: December 16, 2019Publication date: July 23, 2020Inventors: Kento NAKAMURA, Issei ABE
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Publication number: 20200011311Abstract: A portable inflator (1) includes a motor (51), a compression mechanism (6) driven by the motor (51) to compress and discharge air, a main body housing (2), a leg (3), a grip (4), and a manually-operable trigger (41) provided on the grip. The main body housing (2) includes a battery mount part (251) for detachably mounting a battery (8), and houses the motor (51) and the compression mechanism (6). The leg (3) supports the main body housing (2) when a lower surface (31) of the leg (3) is disposed on a placement surface (P). The grip (4) is connected to the main body housing (2) and extends at least substantially parallel to the lower surface (31) of the leg (3). The motor (51) is driven in accordance with pulling of the trigger (41).Type: ApplicationFiled: June 17, 2019Publication date: January 9, 2020Inventors: Kosuke KOMIYA, Noriyuki NISHIDO, Kento NAKAMURA
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Patent number: 10520725Abstract: A display device includes an intermediate-image formation unit configured to form an intermediate image on a screen, a projection unit configured to project the intermediate image toward a transmission/reflection member to display a virtual image, a reception unit configured to receive virtual image information about the virtual image, and a correction unit configured to rotate the intermediate image within the screen to correct a defect of the virtual image in accordance with the virtual image information.Type: GrantFiled: March 9, 2018Date of Patent: December 31, 2019Assignee: Ricoh Company, Ltd.Inventors: Kento Nakamura, Masato Kusanagi, Keita Katagiri
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Publication number: 20190361232Abstract: A display apparatus 1 includes a screen 13 configured to form an intermediate image by being irradiated with light, a front windshield 15 configured to display a virtual image 25 by being irradiated with light forming the intermediated image, a reflection member 31 configured to reflect light going out from the screen 13 to the front windshield 15, and a rotation shaft 32 configured to rotate the reflection member 31. The rotation shaft 32 is tilted with respect to a pitch axis (X-axis). The reflection member 31 has notches 41 formed thereon.Type: ApplicationFiled: February 2, 2018Publication date: November 28, 2019Inventors: Kento NAKAMURA, Makoto HIRAKAWA, Hiromichi ATSUUMI, Naoki MIYATAKE, Yuki HAYASHI
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Patent number: 10437052Abstract: An image display device includes a light source to emit light, an image forming element to form an image with the light emitted from the light source, a micro-lens array to be irradiated with the light forming the image, the micro-lens array including a plurality of lens columns arranged in a second direction, each lens column including micro-lenses being arranged in a first direction, the first direction and the second direction being perpendicular with each other, and a projection optical system to project light passing through the micro-lens array toward a transmitting and reflecting member.Type: GrantFiled: April 26, 2016Date of Patent: October 8, 2019Assignee: RICOH COMPANY, LTD.Inventors: Kento Nakamura, Daisuke Ichii, Makoto Inamoto, Hiroyuki Tanabe
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Publication number: 20190160406Abstract: A hollow cylindrical depth filter formed of fibers of a thermoplastic resin and having a thickness of a filter medium of 5 to 25 millimeters, in which the filter medium has a compression ratio of 0.2 or less when a load of 0.5 MPa is applied thereto, the filter medium has a fiber layer of at least three layers from a fluid inflow side toward an outflow side, porosity of the three layers are adjusted to a specific range, respectively, and intersection points of the fibers forming the filter medium are bonded, a mean interval between the intersection points is 2 to 100 times a mean fiber diameter of the fibers in a length direction, and a ratio of the mean fiber diameter on a surface on an upstream side to the mean fiber diameter on a surface on a downstream side of the filter medium is 0.9 to 1.2.Type: ApplicationFiled: July 26, 2017Publication date: May 30, 2019Applicants: JNC Corporation, JNC Filter Co., Ltd.Inventors: Kouichi OZAMOTO, Kento NAKAMURA, Isamu FUTASE, Takumi KOJIMA
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Publication number: 20180267306Abstract: A display device includes an intermediate-image formation unit configured to form an intermediate image on a screen, a projection unit configured to project the intermediate image toward a transmission/reflection member to display a virtual image, a reception unit configured to receive virtual image information about the virtual image, and a correction unit configured to rotate the intermediate image within the screen to correct a defect of the virtual image in accordance with the virtual image information.Type: ApplicationFiled: March 9, 2018Publication date: September 20, 2018Inventors: Kento NAKAMURA, Masato KUSANAGI, Keita KATAGIRI
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Publication number: 20180252916Abstract: A display device includes a screen to form an intermediate image with light; a concave mirror, and a first mirror disposed between the screen and the concave mirror. The first mirror includes a first reflective area to reflect the light emitted from the screen to the concave mirror; a second reflective area to reflect the light emitted from the concave mirror to an area where a virtual image is formed; and a common reflective area in which the first reflective area and the second reflective area at least partly overlap on each other.Type: ApplicationFiled: February 1, 2018Publication date: September 6, 2018Inventors: Kento NAKAMURA, Takehide OHNO, Hiromichi ATSUUMI, Naoki MIYATAKE, Kazuhiro FUJITA, Yuki HAYASHI
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Patent number: D866280Type: GrantFiled: May 7, 2018Date of Patent: November 12, 2019Assignee: MAKITA CORPORATIONInventors: Kento Nakamura, Hidenori Nagasaka, Tomohiko Imae
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Patent number: D899881Type: GrantFiled: April 9, 2019Date of Patent: October 27, 2020Assignee: MAKITA CORPORATIONInventors: Koji Takahashi, Kento Nakamura, Hideki Kachi
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Patent number: D907979Type: GrantFiled: February 27, 2018Date of Patent: January 19, 2021Assignee: MAKITA CORPORATIONInventors: Kento Nakamura, Takao Kuroyanagi
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Patent number: D913766Type: GrantFiled: August 6, 2019Date of Patent: March 23, 2021Assignee: MAKITA CORPORATIONInventors: Kento Nakamura, Ding Zhao