Patents by Inventor Kenta Yamakawa
Kenta Yamakawa 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: 9593980Abstract: An optical sensor includes a case and an integrated light projector entirely within the case including a light emitter, a light projecting lens, and a light projecting lens holder configured to hold the light projecting lens. A light receiver of the optical sensor is configured to receive reflected light of light projected from the light projector, and a light receiver lens is configured to form an image of the reflected light on the light receiver. The light projector, the light receiver, and the light receiver lens are each independently and directly fixed to the case.Type: GrantFiled: March 29, 2016Date of Patent: March 14, 2017Assignee: OMRON CORPORATIONInventors: Kenji Murata, Kenta Yamakawa, Kosuke Uemura
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Patent number: 9448106Abstract: To provide an optical sensor that can ensure accuracy of positions of a light projecting unit and a light receiving unit in a case. The optical sensor includes a case, an integrated light projecting module that includes a light emitting unit and a light projecting lens, a light receiving unit configured to receive reflected light of light projected from the light projecting module, and a light receiving lens unit configured to form an image of the reflected light on the light receiving unit. The light projecting module, the light receiving unit, and the light receiving lens unit are each independently and directly fixed to the case.Type: GrantFiled: September 18, 2013Date of Patent: September 20, 2016Assignee: OMRON CORPORATIONInventors: Kenji Murata, Kenta Yamakawa, Kosuke Uemura
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Patent number: 9410844Abstract: To provide an optical sensor that can ensure accuracy of positions of a light projecting unit and a light receiving unit in a case. The optical sensor includes a case, an integrated light projecting module that includes a light emitting unit and a light projecting lens, a light receiving unit configured to receive reflected light of light projected from the light projecting module, and a light receiving lens unit configured to form an image of the reflected light on the light receiving unit. The light projecting module, the light receiving unit, and the light receiving lens unit are each independently and directly fixed to the case.Type: GrantFiled: September 18, 2013Date of Patent: August 9, 2016Assignee: OMRON CORPORATIONInventors: Kenji Murata, Kenta Yamakawa, Kosuke Uemura
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Publication number: 20160223398Abstract: An optical sensor includes a case and an integrated light projector entirely within the case including a light emitter, a light projecting lens, and a light projecting lens holder configured to hold the light projecting lens. A light receiver of the optical sensor is configured to receive reflected light of light projected from the light projector, and a light receiver lens is configured to form an image of the reflected light on the light receiver. The light projector, the light receiver, and the light receiver lens are each independently and directly fixed to the case.Type: ApplicationFiled: March 29, 2016Publication date: August 4, 2016Applicant: OMRON CORPORATIONInventors: Kenji MURATA, Kenta YAMAKAWA, Kosuke UEMURA
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Publication number: 20140118727Abstract: To provide an optical sensor that can ensure accuracy of positions of a light projecting unit and a light receiving unit in a case. The optical sensor includes a case, an integrated light projecting module that includes a light emitting unit and a light projecting lens, a light receiving unit configured to receive reflected light of light projected from the light projecting module, and a light receiving lens unit configured to form an image of the reflected light on the light receiving unit. The light projecting module, the light receiving unit, and the light receiving lens unit are each independently and directly fixed to the case.Type: ApplicationFiled: September 18, 2013Publication date: May 1, 2014Applicant: OMRON CORPORATIONInventors: Kenji MURATA, Kenta YAMAKAWA, Kosuke UEMURA
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Patent number: 8294905Abstract: This invention provides an optical measurement device enabling a highly accurate measurement with respect to a measuring target object in which an inclined surface or a curved surface exists at one part of the surface or a tilted measuring target object. The light shielding portion is configured to define an incident angle range with respect to a light receiving center axis of a diffuse reflected light. In other words, a maximum angle formed by the advancing direction of the diffuse reflected light and the light receiving center axis when the diffuse reflected light passes through the opening of the light shielding portion is defined by the diameter of the opening. The light projecting portion projects a light projection beam so that a converging position on the light receiving center axis is included within a range of the light shielding portion on the light receiving center axis for the component converged by the lens portion of the light projection beam (i.e.Type: GrantFiled: November 12, 2009Date of Patent: October 23, 2012Assignee: Omron CorporationInventor: Kenta Yamakawa
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Publication number: 20100123904Abstract: This invention provides an optical measurement device enabling a highly accurate measurement with respect to a measuring target object in which an inclined surface or a curved surface exists at one part of the surface or a tilted measuring target object. The light shielding portion is configured to define an incident angle range with respect to a light receiving center axis of a diffuse reflected light. In other words, a maximum angle formed by the advancing direction of the diffuse reflected light and the light receiving center axis when the diffuse reflected light passes through the opening of the light shielding portion is defined by the diameter of the opening. The light projecting portion projects a light projection beam so that a converging position on the light receiving center axis is included within a range of the light shielding portion on the light receiving center axis for the component converged by the lens portion of the light projection beam (i.e.Type: ApplicationFiled: November 12, 2009Publication date: May 20, 2010Inventor: Kenta YAMAKAWA