Patents by Inventor Takayuki Yagi
Takayuki Yagi 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: 7362488Abstract: The tiltable-body apparatus including a frame member, a tiltable body, and a pair of torsion springs having a twisting longitudinal axis. The torsion springs are disposed along the twisting longitudinal axis opposingly with the tiltable body being interposed, support the tiltable body flexibly and rotatably about the twisting longitudinal axis relative to the frame member, and include a plurality of planar portions, compliant directions of which intersect each other when viewed along a direction of the twisting longitudinal axis. A center of gravity of the tiltable body is positioned on the twisting longitudinal axis of the torsion springs.Type: GrantFiled: March 13, 2007Date of Patent: April 22, 2008Assignee: Canon Kabushiki KaishaInventors: Susumu Yasuda, Hidemasa Mizutani, Takayuki Yagi, Yasuhiro Shimada, Futoshi Hirose, Takahisa Kato
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Patent number: 7350946Abstract: A light-gathering reflection surface is provided on a part of a reflection area on a reflection surface of the reflector. Light from the light source reflected onto the light-gathering surface is emitted as light substantially parallel to an optical axis from the projection lens in the front direction of a lighting fixture. Thus, an irradiation amount on a vicinity of a horizontal cutoff line is reduced, and a center intensity in a front direction in a high beam light distribution pattern is enhanced.Type: GrantFiled: September 9, 2005Date of Patent: April 1, 2008Assignee: Koito Manufacturing Co., Ltd.Inventors: Takayuki Yagi, Naoki Uchida
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Publication number: 20080018336Abstract: An electric potential measuring device comprises a detection electrode of a conductive material disposed in opposition to an object and a movable structure comprised of a first solid material portion of a dielectric and a second solid material portion of another dielectric or a conductive material. A charge induced on the detection electrode by electric lines of force from the object is modulated by moving the movable structure with a drive mechanism, to measure an electric potential of the object. An image forming apparatus comprises the electric potential measuring device and an image forming means for performing a control of an image formation by using the electric potential measuring device.Type: ApplicationFiled: July 19, 2007Publication date: January 24, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Yoshikatsu Ichimura, Takayuki Yagi, Yoshitaka Zaitsu
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Publication number: 20070291501Abstract: A lamp unit includes a semiconductor light-emitting element portion, a reflector that radiates light from a light source forward of the lamp, and a driving portion that moves relative positions of the semiconductor light-emitting element portion and the reflector. The semiconductor light-emitting element portion is provided with a light-emitting surface whose outer peripheral shape is generally oblong, the reflector is provided with a parabolic surface that has a focus line in the horizontal direction, and the driving portion is configured such that rotation is possible within a horizontal plane of the light-emitting surface from a first position where a short side of the light-emitting surface is generally parallel to the focus line up to a second position where a long side of the light-emitting surface is generally parallel to the focus line.Type: ApplicationFiled: June 11, 2007Publication date: December 20, 2007Applicant: KOITO MANUFACTURING CO., LTD.Inventor: Takayuki Yagi
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Publication number: 20070279924Abstract: The reflection surface of a reflector is formed by a parabolic cylindrical plane extending in the horizontal direction orthogonal to an optical axis. A light emitting element is configured to have five light emitting chips arranged in a T-shape and these light emitting chips are lighted in two lighting modes. In the first lighting mode, a special light emitting chip and a pair of the left and right side special light emitting chips which front end edges are aligned on the focal line of the parabolic cylindrical plane are lighted simultaneously, whereby a light distribution pattern having a narrow vertical width and a prolong shape is formed. In the second lighting mode, a special light emitting chip located at the center portion and two general light emitting chips disposed in series on the backward side thereof are lighted simultaneously, whereby a light distribution pattern having a large vertical width and a prolong shape is formed.Type: ApplicationFiled: May 31, 2007Publication date: December 6, 2007Applicant: KOITO MANUFACTURING CO., LTD.Inventor: Takayuki YAGI
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Patent number: 7294389Abstract: In a method of fabricating an array of microstructures, a substrate with an electrically-conductive portion is provided, an insulating mask layer is formed on the electrically-conductive portion of the substrate, a plurality of openings are formed in the insulating mask layer to expose the electrically-conductive portion, and a first plated or electrodeposited layer is deposited in the openings and on the insulating mask layer by electroplating or electrodeposition. A second plated layer is further formed on the first plated or electrodeposited layer and on the electrically-conductive portion by electroless plating to reduce a size distribution of microstructures over the array.Type: GrantFiled: September 1, 2004Date of Patent: November 13, 2007Assignee: Canon Kabushiki KaishaInventors: Takayuki Teshima, Takayuki Yagi, Yasuhiro Shimada, Takashi Ushijima
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Publication number: 20070257682Abstract: A potential sensor including first and second detection electrodes opposed to an object of which a potential is to be measured, and a movable shutter so positioned between the detection electrodes and the potential-measured object with gaps thereto; wherein the movable shutter can assume a first state and a second state, the first detection electrode is exposed to the potential-measured object wider when the movable shutter assumes the first state than when the movable shutter assumes the second state, and the second detection electrode is exposed to the potential-measured object narrower when the movable shutter assumes the first state than when the movable shutter assumes the second state.Type: ApplicationFiled: July 5, 2007Publication date: November 8, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Susumu Yasuda, Takayuki Yagi, Takashi Ushijima, Yoshitaka Zaitsu, Yoshikatsu Ichimura
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Publication number: 20070247166Abstract: An electric potential measuring device comprises a detection electrode of a conductive material disposed in opposition to an object and a movable structure comprised of a first solid material portion of a dielectric and a second solid material portion of another dielectric or a conductive material. A charge induced on the detection electrode by electric lines of force from the object is modulated by moving the movable structure with a drive mechanism, to measure an electric potential of the object. An image forming apparatus comprises the electric potential measuring device and an image forming means for performing a control of an image formation by using the electric potential measuring device.Type: ApplicationFiled: March 28, 2007Publication date: October 25, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Yoshikatsu Ichimura, Takayuki Yagi, Yoshitaka Zaitsu
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Publication number: 20070242328Abstract: The tiltable-body apparatus including a frame member, a tiltable body, and a pair of torsion springs having a twisting longitudinal axis. The torsion springs are disposed along the twisting longitudinal axis opposingly with the tiltable body being interposed, support the tiltable body flexibly and rotatably about the twisting longitudinal axis relative to the frame member, and include a plurality of planar portions, compliant directions of which intersect each other when viewed along a direction of the twisting longitudinal axis. A center of gravity of the tiltable body is positioned on the twisting longitudinal axis of the torsion springs.Type: ApplicationFiled: March 13, 2007Publication date: October 18, 2007Applicant: Canon Kabushiki KaishaInventors: Susumu Yasuda, Hidemasa Mizutani, Takayuki Yagi, Yasuhiro Shimada, Futoshi Hirose, Takahisa Kato
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Patent number: 7277214Abstract: The tiltable-body apparatus including a frame member, a tiltable body, and a pair of torsion springs having a twisting longitudinal axis. The torsion springs are disposed along the twisting longitudinal axis opposingly with the tiltable body being interposed, support the tiltable body flexibly and rotatably about the twisting longitudinal axis relative to the frame member, and include a plurality of planar portions, compliant directions of which intersect each other when viewed along a direction of the twisting longitudinal axis. A center of gravity of the tiltable body is positioned on the twisting longitudinal axis of the torsion springs.Type: GrantFiled: May 26, 2006Date of Patent: October 2, 2007Assignee: Canon Kabushiki KaishaInventors: Susumu Yasuda, Hidemasa Mizutani, Takayuki Yagi, Yasuhiro Shimada, Futoshi Hirose, Takahisa Kato
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Patent number: 7274193Abstract: A potential sensor (101) including first and second detection electrodes (121 a, b) opposed to an object of which a potential is to be measured, and a movable shutter (125) so positioned between the detection electrodes and the potential-measured object with gaps thereto; wherein the movable shutter can assume a first state and a second state, the first detection electrode is exposed to the potential-measured object wider when the movable shutter assumes the first state than when the movable shutter assumes the second state, and the second detection electrode is exposed to the potential-measured object narrower when the movable shutter assumes the first state than when the movable shutter assumes the second state.Type: GrantFiled: March 26, 2004Date of Patent: September 25, 2007Assignee: Canon Kabushiki KaishaInventors: Susumu Yasuda, Takayuki Yagi, Takashi Ushijima, Yoshitaka Zaitsu, Yoshikatsu Ichimura
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Patent number: 7265554Abstract: An electric potential measuring device includes a detection electrode of a conductive material disposed in opposition to an object and a movable structure includes a first solid material portion of another dielectric and a second solid material portion of another dielectric or a conductive material. A charge induced on the detection electrode by electric lines of force from the object is modulated by moving the movable structure with a drive mechanism, to measure an electric potential of the object. An image forming apparatus includes the electric potential measuring device and an image forming means for performing a control of an image formation by using the electric potential measuring device.Type: GrantFiled: March 26, 2004Date of Patent: September 4, 2007Assignee: Canon Kabushiki KaishaInventors: Yoshikatsu Ichimura, Takayuki Yagi, Yoshitaka Zaitsu
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Patent number: 7173747Abstract: The tiltable-body apparatus including a frame member, a tiltable body, and a pair of torsion springs having a twisting longitudinal axis. The torsion springs are disposed along the twisting longitudinal-axis opposingly with the tiltable body being interposed, support the tiltable body flexibly and rotatably about the twisting longitudinal axis relative to the frame member, and include a plurality of planar portions, compliant directions of which intersect each other when viewed along a direction of the twisting longitudinal axis. A center of gravity of the tiltable body is positioned on the twisting longitudinal axis of the torsion springs.Type: GrantFiled: September 28, 2004Date of Patent: February 6, 2007Assignee: Canon Kabushiki KaishiInventors: Susumu Yasuda, Hidemasa Mizutani, Takayuki Yagi, Yasuhiro Shimada, Futoshi Hirose, Takahisa Kato
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Publication number: 20060209378Abstract: The tiltable-body apparatus including a frame member, a tiltable body, and a pair of torsion springs having a twisting longitudinal axis. The torsion springs are disposed along the twisting longitudinal axis opposingly with the tiltable body being interposed, support the tiltable body flexibly and rotatably about the twisting longitudinal axis relative to the frame member, and include a plurality of planar portions, compliant directions of which intersect each other when viewed along a direction of the twisting longitudinal axis. A center of gravity of the tiltable body is positioned on the twisting longitudinal axis of the torsion springs.Type: ApplicationFiled: May 26, 2006Publication date: September 21, 2006Applicant: Canon Kabushiki KaishaInventors: Susumu Yasuda, Hidemasa Mizutani, Takayuki Yagi, Yasuhiro Shimada, Futoshi Hirose, Takahisa Kato
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Publication number: 20060192565Abstract: A potential sensor (101) including first and second detection electrodes (121 a, b) opposed to an object of which a potential is to be measured, and a movable shutter (125) so positioned between the detection electrodes and the potential-measured object with gaps thereto; wherein the movable shutter can assume a first state and a second state, the first detection electrode is exposed to the potential-measured object wider when the movable shutter assumes the first state than when the movable shutter assumes the second state, and the second detection electrode is exposed to the potential-measured object narrower when the movable shutter assumes the first state than when the movable shutter assumes the second state.Type: ApplicationFiled: March 26, 2004Publication date: August 31, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Susumu Yasuda, Takayuki Yagi, Takashi Ushijima, Yoshitaka Zaitsu, Yoshikatsu Ichimura
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Publication number: 20060186898Abstract: An electric potential measuring device comprises a detection electrode of a conductive material disposed in opposition to an object and a movable structure comprised of a first solid material portion of another dielectric and a second solid material portion of another dielectric or a conductive material. A charge induced on the detection electrode by electric lines of force from the object is modulated by moving the movable structure with a drive mechanism, to measure an electric potential of the object. An image forming apparatus comprises the electric potential measuring device and an image forming means for performing a control of an image formation by using the electric potential measuring device.Type: ApplicationFiled: March 26, 2004Publication date: August 24, 2006Applicant: Canon Kabushiki KaishaInventors: Yoshikatsu Ichimura, Takayuki Yagi, Yoshitaka Zaitsu
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Patent number: 7057783Abstract: There is disclosed a light deflector in which both ends of a movable plate is supported to a support substrate by an elastic support portion, a reflection surface is formed on one surface of the movable plate, and the movable plate is torsion-oscillated about a torsion axis of the elastic support portion as a center to deflect an incident light that enters the reflection surface, wherein a recessed portion is formed on at least one side surface of both sides, which is a surface on which the reflection surface is not formed, and between which the torsion axis of the elastic support portion is interposed.Type: GrantFiled: April 29, 2005Date of Patent: June 6, 2006Assignee: Canon Kabushiki KaishaInventors: Takahisa Kato, Takayuki Yagi, Yasuhiro Shimada, Yukio Furukawa
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Patent number: 7038834Abstract: There are provided a small optical deflector that can be driven at a high speed with a low voltage, provides a large angle of deflection, has a low distortion even in high speed operation and has a high static flatness of a reflective surface, and a method of producing the optical deflector. The optical deflector drives a movable plate relative to a supporting substrate to deflect a light incident on a reflective surface and has a configuration in which at least two recesses are formed in a surface of the movable plate on which the reflective surface is not formed, and a magnetic material is provided in the recesses.Type: GrantFiled: April 8, 2005Date of Patent: May 2, 2006Assignee: Canon Kabushiki KaishaInventors: Takahisa Kato, Takayuki Yagi, Yasuhiro Shimada
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Publication number: 20060056192Abstract: A light-gathering reflection surface is provided on a part of a reflection area on a reflection surface of the reflector. Light from the light source reflected onto the light-gathering surface is emitted as light substantially parallel to an optical axis from the projection lens in the front direction of a lighting fixture. Thus, an irradiation amount on a vicinity of a horizontal cutoff line is reduced, and a center intensity in a front direction in a high beam light distribution pattern is enhanced.Type: ApplicationFiled: September 9, 2005Publication date: March 16, 2006Inventors: Takayuki Yagi, Naoki Uchida
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Publication number: 20060028833Abstract: The projection lens of a lamp unit is configured as a plano-convex lens whose front surface is a convex curved surface and whose rear surface is a plane. The rear surface is constituted by a plane tilted upward with respect to a plane orthogonal to the optical axis and outward in a vehicle width direction.Type: ApplicationFiled: August 5, 2005Publication date: February 9, 2006Inventors: Takayuki Yagi, Naoki Uchida