Patents by Inventor Ippei Yamamoto
Ippei Yamamoto 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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Publication number: 20160356447Abstract: The vehicle lamp of the present disclosure includes a substrate, a heat dissipating member, a reflector, and a fastening member. The reflector includes a boss portion that protrudes toward the heat dissipating member side and includes a fastening hole. The substrate includes a first opening. The heat dissipating member is in contact with the substrate to be thermally conductive with the substrate and includes a first portion that includes a second opening, a second portion that is more spaced apart from the reflector than the first portion to include an insertion hole and a fastening seat surface, and a connecting portion that connects the first portion and the second portion to each other. The boss portion passes through the first opening and the second opening and abuts to the second portion such that the fastening hole and the insertion hole overlap with each other.Type: ApplicationFiled: May 5, 2016Publication date: December 8, 2016Inventors: Ippei Yamamoto, Tatsuhiko Harada, Yuji Yasuda
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Patent number: 9476556Abstract: A reflector configured to receive and reflect illumination from an illumination device across a projector lens of a vehicle headlight assembly. The reflector includes a reflection surface, a curved edge adjacent to the reflection surface and defining a lower illumination aperture, and a wall member extending across the lower illumination aperture to define a gap portion between the wall member and the curved edge. The wall member is configured to reduce illumination reflected from the reflection surface by blocking an amount of illumination passing through the lower illumination aperture.Type: GrantFiled: January 2, 2014Date of Patent: October 25, 2016Assignee: HONDA MOTOR CO., LTD.Inventors: Thomas G. Kracker, Tony Da-Tung Wang, Francisco Americo Ramos, Darrin T. Roberts, Shinichi Todaka, Dean Bowles, Ippei Yamamoto
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Patent number: 9423087Abstract: A vehicular lamp has a light source attachment flat surface having a plurality of light source attachment portions, a plurality of light sources attached to the plurality of light source attachment portions, and a plurality of parabolic reflectors. Each of the plurality of parabolic reflectors reflect light from a corresponding one of the light sources in a predetermined optical axis direction. The light source attachment flat surface is tilted with respect to an optical axis of the reflector so as to be higher on a front side of the lamp than on a rear side of the lamp.Type: GrantFiled: August 12, 2014Date of Patent: August 23, 2016Assignee: KOITO MANUFACTURING CO., LTD.Inventor: Ippei Yamamoto
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Publication number: 20160084465Abstract: In a vehicle lamp in which a plurality of lamp units is arranged side by side in a direction intersecting with a lamp longitudinal direction, a central luminous intensity of a light distribution pattern is increased while securing a sufficient irradiation light quantity. A first additional reflector 34A configured to reflect the light from a second light emitting element 22B toward the front is disposed in the vicinity of a front end edge 24A1 of a first reflector 24A.Type: ApplicationFiled: May 27, 2014Publication date: March 24, 2016Applicant: KOITO MANUFACTURING CO., LTD.Inventor: Ippei YAMAMOTO
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Patent number: 9175823Abstract: Disclosed is a vehicular headlamp including: a basic lamp unit configured to form a main light distribution pattern that is controlled in light distribution so as to satisfy illuminance requirements at a plurality of predetermined sites in a low beam light distribution pattern which is projected on a vertical virtual screen positioned in front of a vehicle; and a plurality of additional lamp units controlled in light distribution so as to irradiate light to any one of left and right diffusion regions adjacent to the main light distribution pattern. The low beam light distribution pattern is formed on the vertical virtual screen by combining the basic lamp unit and the plurality of additional lamp units.Type: GrantFiled: December 24, 2013Date of Patent: November 3, 2015Assignee: KOITO MANUFACTURING CO., LTD.Inventors: Ippei Yamamoto, Akinori Matsumoto
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Publication number: 20150043238Abstract: A vehicle lamp 10 includes a first parabolic high-beam condensing reflector 16b, a second parabolic high-beam condensing reflector 17c and a parabolic high-beam diffusing reflector 16a. The first and second parabolic high-beam condensing reflectors 16b, 16c forms a high-beam condensed light distribution pattern by reflecting light emitted from light sources 18b, 18c. The high-beam diffusing reflector 16a forms a high-beam diffused light distribution pattern by reflecting light emitted from a light source 18a. A part 21 of a reflection surface of the high-beam diffusing reflector 16a is located in front of front end portions of the first and second parabolic condensing reflectors 16b, 16c.Type: ApplicationFiled: August 4, 2014Publication date: February 12, 2015Applicant: KOITO MANUFACTURING CO., LTD.Inventors: Ippei YAMAMOTO, Masahito NAGANAWA
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Publication number: 20150043236Abstract: A vehicular lamp has a light source attachment flat surface having a plurality of light source attachment portions, a plurality of light sources attached to the plurality of light source attachment portions, and a plurality of parabolic reflectors. Each of the plurality of parabolic reflectors reflect light from a corresponding one of the light sources in a predetermined optical axis direction. The light source attachment flat surface is tilted with respect to an optical axis of the reflector so as to be higher on a front side of the lamp than on a rear side of the lamp.Type: ApplicationFiled: August 12, 2014Publication date: February 12, 2015Inventor: Ippei Yamamoto
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Patent number: 8939624Abstract: A lighting unit includes a first light source, a second light source, a projection lens, a first reflector that reflects light from the first light source, a second reflector that reflects light from the second light source, a shade section, and a reflecting section. The shade section is movable between a first position at which at least a part of the light from the second reflector is shielded and a second position which is spaced apart from the first position. The reflecting section reflects a part of the light reflected from the second reflector when the shade section is at the first position.Type: GrantFiled: January 24, 2013Date of Patent: January 27, 2015Assignee: Koito Manufacturing Co., Ltd.Inventors: Ippei Yamamoto, Hiroki Matsumoto, Ryuho Sato
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Publication number: 20150009700Abstract: A lamp unit has a first light source, a second light source which is illuminated when the first light source is turned off, and a projection lens having a first entering surface which is associated with a first focal point and a second entering surface which is associated with a second focal point. Light emitted from the first light source is incident on the first entering surface and passes through the projection lens. The second light source is disposed between the first light source and the projection lens in a position through which light emitted from the first light source to reach the first entering surface does not pass. Light emitted from the second light source is incident on the second entering surface and passes through the projection lens.Type: ApplicationFiled: January 22, 2013Publication date: January 8, 2015Applicant: KOITO MANUFACTURING CO., LTD.Inventor: Ippei Yamamoto
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Patent number: 8858050Abstract: A vehicular lamp having first and second light source units disposed behind a projection lens is provided. In the second light source unit, light from a second light source disposed at a position lying further downward than the position of an optical axis of the projection lens is reflected toward the projection lens by a reflection surface of a second reflector disposed to extend downward from a front end edge of a shade. In this case, an upper area of the projection lens is configured such that light from a rear focus of the upper area of the projection lens is emitted further downward than emission light from a general area other than the upper area.Type: GrantFiled: April 6, 2012Date of Patent: October 14, 2014Assignee: Koito Manufacturing Co., Ltd.Inventor: Ippei Yamamoto
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Publication number: 20140198517Abstract: Disclosed is a vehicular headlamp including: a basic lamp unit configured to form a main light distribution pattern that is controlled in light distribution so as to satisfy illuminance requirements at a plurality of predetermined sites in a low beam light distribution pattern which is projected on a vertical virtual screen positioned in front of a vehicle; and a plurality of additional lamp units controlled in light distribution so as to irradiate light to any one of left and right diffusion regions adjacent to the main light distribution pattern. The low beam light distribution pattern is formed on the vertical virtual screen by combining the basic lamp unit and the plurality of additional lamp units.Type: ApplicationFiled: December 24, 2013Publication date: July 17, 2014Applicant: KOITO MANUFACTURING CO., LTD.Inventors: Ippei YAMAMOTO, Akinori MATSUMOTO
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Publication number: 20140192548Abstract: A reflector configured to receive and reflect illumination from an illumination device across a projector lens of a vehicle headlight assembly. The reflector includes a reflection surface, a curved edge adjacent to the reflection surface and defining a lower illumination aperture, and a wall member extending across the lower illumination aperture to define a gap portion between the wall member and the curved edge. The wall member is configured to reduce illumination reflected from the reflection surface by blocking an amount of illumination passing through the lower illumination aperture.Type: ApplicationFiled: January 2, 2014Publication date: July 10, 2014Applicant: HONDA MOTOR CO., LTD.Inventors: Thomas Kracker, Tony Wang, Frank Ramos, Darrin Roberts, Shinichi Todaka, Dean Bowles, Ippei Yamamoto
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Publication number: 20130188378Abstract: A lighting unit includes a first light source, a second light source, a projection lens, a first reflector that reflects light from the first light source, a second reflector that reflects light from the second light source, a shade section, and a reflecting section. The shade section is movable between a first position at which at least a part of the light from the second reflector is shielded and a second position which is spaced apart from the first position. The reflecting section reflects a part of the light reflected from the second reflector when the shade section is at the first position.Type: ApplicationFiled: January 24, 2013Publication date: July 25, 2013Inventors: Ippei Yamamoto, Hiroki Matsumoto, Ryuho Sato
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Patent number: 8439539Abstract: Disclosed is a low-beam lamp unit including an LED, a projector lens disposed on an optical axis, a reflector reflecting light of the LED toward the vicinity of a back focus of the projector lens on a vertical cross section, a shade having a front edge portion disposed in the vicinity of the back focus of projector lens to block a portion of light reflected by the reflector, and a re-reflection surface integrally provided in the back of the front edge portion to re-reflect the portion of reflected light blocked by the shade to the projector lens. In the low-beam lamp unit, at least a portion of the re-reflection surface has a light diffusion portion which is a continuously curved surface that is convex toward the reflector in the vertical cross section.Type: GrantFiled: May 9, 2011Date of Patent: May 14, 2013Assignee: Koito Manufacturing Co., Ltd.Inventor: Ippei Yamamoto
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Patent number: 8425097Abstract: A lamp unit includes: a first board supporting a first LED; a second board supporting a second LED; a first reflector that is disposed so as to reflect, toward a projection lens, light emitted by the first LED; a second reflector that is disposed so as to reflect, toward the projection lens, light emitted by the second LED; and a shade that blocks part of light reflected by the first reflector. The first and second boards support the first and second LEDs so that the first and second LEDs are disposed on opposite sides with respect to an optical axis Ax of the projection lens. The first reflector is disposed on the side opposite to the first LED with respect to the optical axis Ax, and the second reflector is disposed on the side opposite to the second LED with respect to the optical axis Ax.Type: GrantFiled: July 6, 2011Date of Patent: April 23, 2013Assignee: Koito Manufacturing Co., Ltd.Inventor: Ippei Yamamoto
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Publication number: 20120262935Abstract: Disclosed is a vehicular lamp having first and second light source units disposed in the rear of a projection lens. In the second light source unit, light from a second light source disposed at a position lying further downward than the position of an optical axis of the projection lens is reflected toward the projection lens by a reflection surface of a second reflector disposed to extend downward from a front end edge of a shade. In this case, an upper area of the projection lens is configured such that light from a rear focus of the projection lens is emitted further downward than emission light from a general area other than the upper area. As a result, the additional light distribution pattern is formed as a light distribution pattern which is expanded further downward than cut-off lines of the low-beam light distribution pattern.Type: ApplicationFiled: April 6, 2012Publication date: October 18, 2012Applicant: KOITO MANUFACTURING CO., LTD.Inventor: Ippei YAMAMOTO
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Publication number: 20120008335Abstract: A lamp unit includes: a first board supporting a first LED; a second board supporting a second LED; a first reflector that is disposed so as to reflect, toward a projection lens, light emitted by the first LED; a second reflector that is disposed so as to reflect, toward the projection lens, light emitted by the second LED; and a shade that blocks part of light reflected by the first reflector. The first and second boards support the first and second LEDs so that the first and second LEDs are disposed on opposite sides with respect to an optical axis Ax of the projection lens. The first reflector is disposed on the side opposite to the first LED with respect to the optical axis Ax, and the second reflector is disposed on the side opposite to the second LED with respect to the optical axis Ax.Type: ApplicationFiled: July 6, 2011Publication date: January 12, 2012Applicant: KOITO MANUFACTURING CO., LTD.Inventor: Ippei YAMAMOTO
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Publication number: 20110280029Abstract: Disclosed is a low-beam lamp unit including an LED, a projector lens disposed on an optical axis, a reflector reflecting light of the LED toward the vicinity of a back focus of the projector lens on a vertical cross section, a shade having a front edge portion disposed in the vicinity of the back focus of projector lens to block a portion of light reflected by the reflector, and a re-reflection surface integrally provided in the back of the front edge portion to re-reflect the portion of reflected light blocked by the shade to the projector lens. In the low-beam lamp unit, at least a portion of the re-reflection surface has a light diffusion portion which is a continuously curved surface that is convex toward the reflector in the vertical cross section.Type: ApplicationFiled: May 9, 2011Publication date: November 17, 2011Applicant: KOITO MANUFACTURING CO., LTD.Inventor: Ippei YAMAMOTO
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Patent number: 7461953Abstract: A fog lamp is provided with a light source bulb having a filament as a light source for emitting light, and a secondary light source formed by reflection and collection of the light from the filament; and a reflector having a reflection surface that irradiates the light from the light source bulb forward. The reflection surface of the reflector is constructed so as to irradiate the light from the secondary light source downward of the predetermined cut-off line.Type: GrantFiled: November 23, 2005Date of Patent: December 9, 2008Assignee: Koito Manufacturing Co., Ltd.Inventor: Ippei Yamamoto
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Patent number: 7204620Abstract: Front viewability during turning may be enhanced by a headlamp device for a vehicle arranged to perform swivel control. The headlamp device is arranged so that when a vehicle 2 is turning around a right curve with low beam, the vehicle velocity V and the estimated horizontal G value are used to calculate the curve turning radius R, which is then used together with the vehicle velocity R to calculate the driver viewing point angle ? to which the leftward deviation ? of the highest light intensity position in the light distribution pattern PL for low beam is added to calculate the target swivel angle ? on the basis of which the lighting fixture unit of the headlamp 10R is swung over the target swivel angle ? so that light beam is emitted toward a region surrounding the driver viewing point EP on the road ahead of the vehicle in the forward direction.Type: GrantFiled: November 2, 2004Date of Patent: April 17, 2007Assignee: Koito Manufacturing Co., Ltd.Inventors: Ippei Yamamoto, Takehiko Tajima