Patents by Inventor Hironobu Kiyomoto
Hironobu Kiyomoto 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: 7470042Abstract: To provide a luminescent light source that can increase the number of divisions of a reflecting mirror without reducing pitch interval of reflection areas. A luminescent light source comprises a reflecting mirror for reflecting light, a mold unit arranged on a light reflection surface of the reflecting mirror, and light emitting devices of three luminescent devices of red, blue and green that are placed in the central part and output light to the mold unit. In the reflecting mirror, rectangular reflection areas are arranged vertically and horizontally in a grid.Type: GrantFiled: January 17, 2006Date of Patent: December 30, 2008Assignee: OMRON CorporationInventors: Takahiro Ayabe, Akira Matsui, Hironobu Kiyomoto
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Patent number: 7399108Abstract: On the rear surface of a transparent molded unit is provided a reflecting member. In a central part of the molded unit are encapsulated light emitting devices. In the vicinity of the central part of the reflecting member is formed a reflecting area that is angularly inclined to the rear surface as it moves to the outer circumferential direction. A toric channel is provided on a light irradiation surface of the molded unit, and a slope total reflection area is provided in its inner circumferential side. Light emanating from the light emitting devices is reflected at the slope total reflection area, and further reflected at the direct output area. Then, after being further reflected at the reflecting area of the reflecting member, the light is guided to the outer circumferential end of the reflecting member, and is outputted forward from the total reflection area by being reflected at the outer circumferential end of the reflecting member.Type: GrantFiled: October 18, 2005Date of Patent: July 15, 2008Assignee: Omron CorporationInventors: Takahiro Ayabe, Akira Matsui, Kenji Homma, Hironobu Kiyomoto
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Patent number: 7300183Abstract: On a front wall of a mold resin (13) sealing a light emitter (12), a direct emission region (18), through which the light emitted from the light emitter (12) directly passes to the outside, and a total reflection region (19), by which the light emitted from the light emitter (12) is totally reflected, are formed. The direct emission region (18) is formed into a shape of a convex lens. A light reflection portion (20) which is made of a concave mirror is provided on the rear face of the mold resin (13). When a part of the light emitted from the light emitter (12) passes through the direct emission region (18), it is affected by the lens to be emitted to the front direction. After another part of the light emitted from the light emitter (12) is totally reflected by the total reflection region (19), it is reflected by the light reflection portion (20) to be emitted to the front direction through the total reflection region (19).Type: GrantFiled: May 23, 2005Date of Patent: November 27, 2007Assignee: Omron CorporationInventors: Hironobu Kiyomoto, Hayami Hosokawa, Naru Yasuda, Kenji Homma, Yukari Terakawa
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Patent number: 7244924Abstract: This invention improves the use efficiency of light emitted by a solid light emitter such as a light emitting diode, and realizes a desired directional pattern. On a front boundary surface of a mold resin 13 sealing a light emitter 12, there are formed a direct emission region 18 for emitting the light from the light emitter 12 and a total reflection region 19 for totally reflecting the light from the light emitter 12. The direct emission region 18 is convex lens-shaped. A light reflecting portion 20 having a concave mirror shape is disposed on a rear wall of the mold resin 13. A part of light emitted from the light emitter 12 is emitted forward by receiving an optical lens action when it passes through the direct emission region 18. Another part of the light emitted by from the light emitter 12 is totally reflected by the total reflection region 19, and is reflected by the light reflecting portion 20, and emitted forward from the total reflection region 19.Type: GrantFiled: February 7, 2006Date of Patent: July 17, 2007Assignee: Omron CorporationInventors: Hironobu Kiyomoto, Hayami Hosokawa, Naru Yasuda, Kenji Homma, Yukari Terakawa
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Patent number: 7161567Abstract: A mold part formed of a light transmitting material having a high refractive index is molded in a concave-shaped reflecting member, and a light emitting element such as an LED chip or the like is inserted in the center of the mold part. A circular direct emitting portion is provided at the center of a front face of the mold part, a ring-shaped total reflecting portion is provided around it, and a slanted total reflecting portion is provided between the direct emitting portion and total reflecting portion. Thereby, the uniformity of front face luminance with a simple structure in a light emitting device provided with a reflecting member on a back face of a mold part is improved.Type: GrantFiled: December 3, 2003Date of Patent: January 9, 2007Assignee: Omron CorporationInventors: Kenji Homma, Takahiro Ayabe, Hironobu Kiyomoto
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Publication number: 20060268576Abstract: A light emission source includes a reflector, a first light reflecting surface disposed on the reflector, a light guide disposed on the side of the reflector with the first light reflection surface, and a light emitter for emitting light towards the light guide. The light guide includes a second light reflection surface disposed facing the first light reflection surface for reflecting some light and transmitting remaining light, and a light emission surface disposed on an opposite side of the second light reflection surface on the light guide for transmitting light emitted from the light emitter, light reflected by the first light reflection surface, and light reflected by the second light reflection surface. A light emission source includes a light guide.Type: ApplicationFiled: May 24, 2006Publication date: November 30, 2006Applicant: OMRON CorporationInventors: Akira Matsui, Hironobu Kiyomoto, Kenji Homma
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Publication number: 20060158899Abstract: To provide a luminescent light source that can increase the number of divisions of a reflecting mirror without reducing pitch interval of reflection areas. A luminescent light source comprises a reflecting mirror for reflecting light, a mold unit arranged on a light reflection surface of the reflecting mirror, and light emitting devices of three luminescent devices of red, blue and green that are placed in the central part and output light to the mold unit. In the reflecting mirror, rectangular reflection areas are arranged vertically and horizontally in a grid.Type: ApplicationFiled: January 17, 2006Publication date: July 20, 2006Applicant: OMRON CorporationInventors: Takahiro Ayabe, Akira Matsui, Hironobu Kiyomoto
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Publication number: 20060124835Abstract: This invention improves the use efficiency of light emitted by a solid light emitter such as a light emitting diode, and realizes a desired directional pattern. On a front boundary surface of a mold resin 13 sealing a light emitter 12, there are formed a direct emission region 18 for emitting the light from the light emitter 12 and a total reflection region 19 for totally reflecting the light from the light emitter 12. The direct emission region 18 is convex lens-shaped. A light reflecting portion 20 having a concave mirror shape is disposed on a rear wall of the mold resin 13. A part of light emitted from the light emitter 12 is emitted forward by receiving an optical lens action when it passes through the direct emission region 18. Another part of the light emitted by from the light emitter 12 is totally reflected by the total reflection region 19, and is reflected by the light reflecting portion 20, and emitted forward from the total reflection region 19.Type: ApplicationFiled: February 7, 2006Publication date: June 15, 2006Applicant: OMRON CorporationInventors: Hironobu Kiyomoto, Hayami Hosokawa, Naru Yasuda, Kenji Homma, Yukari Terakawa
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Publication number: 20060083023Abstract: On the rear surface of a transparent molded unit is provided a reflecting member. In a central part of the molded unit are encapsulated light emitting devices. In the vicinity of the central part of the reflecting member is formed a reflecting area that is angularly inclined to the rear surface as it moves to the outer circumferential direction. A toric channel is provided on a light irradiation surface of the molded unit, and a slope total reflection area is provided in its inner circumferential side. Light emanating from the light emitting devices is reflected at the slope total reflection area, and further reflected at the direct output area. Then, after being further reflected at the reflecting area of the reflecting member, the light is guided to the outer circumferential end of the reflecting member, and is outputted forward from the total reflection area by being reflected at the outer circumferential end of the reflecting member.Type: ApplicationFiled: October 18, 2005Publication date: April 20, 2006Applicant: OMRON CorporationInventors: Takahiro Ayabe, Akira Matsui, Kenji Homma, Hironobu Kiyomoto
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Publication number: 20050212089Abstract: On a front wall of a mold resin (13) sealing a light emitter (12), a direct emission region (18), through which the light emitted from the light emitter (12) directly passes to the outside, and a total reflection region (19), by which the light emitted from the light emitter (12) is totally reflected, are formed. The direct emission region (18) is formed into a shape of a convex lens. A light reflection portion (20) which is made of a concave mirror is provided on the rear face of the mold resin (13). When a part of the light emitted from the light emitter (12) passes through the direct emission region (18), it is affected by the lens to be emitted to the front direction. After another part of the light emitted from the light emitter (12) is totally reflected by the total reflection region (19), it is reflected by the light reflection portion (20) to be emitted to the front direction through the total reflection region (19).Type: ApplicationFiled: May 23, 2005Publication date: September 29, 2005Applicant: OMRON CorporationInventors: Hironobu Kiyomoto, Hayami Hosokawa, Naru Yasuda, Kenji Homma, Yukari Terakawa
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Publication number: 20040119668Abstract: A mold part formed of a light transmitting material having a high refractive index is molded in a concave-shaped reflecting member, and a light emitting element such as an LED chip or the like is inserted in the center of the mold part. A circular direct emitting portion is provided at the center of a front face of the mold part, a ring-shaped total reflecting portion is provided around it, and a slanted total reflecting portion is provided between the direct emitting portion and total reflecting portion. Thereby, the uniformity of front face luminance with a simple structure in a light emitting device provided with a reflecting member on a back face of a mold part is improved.Type: ApplicationFiled: December 3, 2003Publication date: June 24, 2004Inventors: Kenji Homma, Takahiro Ayabe, Hironobu Kiyomoto
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Patent number: 6578989Abstract: An optical device for an optical element to control a light path about emission light emitted from the optical element to external or incident light entered from external to the optical element, which includes a light reflecting member, a resin member covering a light reflection surface of the light reflecting member, and a bumper member interposed between the light reflecting member and the resin member. The resin member is provided with a boundary surface for almost totally reflecting light deviated from a predetermined region in front of the optical element, and the boundary surface of the resin member or the light reflecting member is so disposed that light deviating from the predetermined region in front of the optical element and passing between the optical element and an external of the optical device is reflected more than once with each of the boundary surface and the light reflecting member.Type: GrantFiled: September 28, 2001Date of Patent: June 17, 2003Assignee: Omron CorporationInventors: Yoshimasa Osumi, Akira Matsui, Hironobu Kiyomoto
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Patent number: 6552368Abstract: A light emission device includes a light emitter, a light reflection member, and a resin sealing the light emitter by covering the light reflection member and the light emitter, in which light deviated from a predetermined front region in the light emitted from the light emitter is totally reflected by a boundary surface of the resin to be forwardly emitted by the light reflection member, and the emitter is thermally contacted with the reflection member to dissipate the heat generated from the light emitter.Type: GrantFiled: September 28, 2001Date of Patent: April 22, 2003Assignee: Omron CorporationInventors: Shingo Tamai, Hayami Hosokawa, Hironobu Kiyomoto, Naru Yasuda
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Publication number: 20020085390Abstract: This invention improves the use efficiency of light emitted by a solid light emitter such as a light emitting diode, and realizes a desired directional pattern. On a front boundary surface of a mold resin 13 sealing a light emitter 12, there are formed a direct emission region 18 for emitting the light from the light emitter 12 and a total reflection region 19 for totally reflecting the light from the light emitter 12. The direct emission region 18 is convex lens-shaped. A light reflecting portion 20 having a concave mirror shape is disposed on a rear wall of the mold resin 13. A part of light emitted from the light emitter 12 is emitted forward by receiving an optical lens action when it passes through the direct emission region 18. Another part of the light emitted by from the light emitter 12 is totally reflected by the total reflection region 19, and is reflected by the light reflecting portion 20, and emitted forward from the total reflection region 19.Type: ApplicationFiled: July 11, 2001Publication date: July 4, 2002Inventors: Hironobu Kiyomoto, Hayami Hosokawa, Naru Yasuda, Kenji Homma, Yukari Terakawa
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Publication number: 20020084462Abstract: A light emission device includes a light emitter, a light reflection member, and a resin sealing the light emitter by covering the light reflection member and the light emitter, in which light deviated from a predetermined front region in the light emitted from the light emitter is totally reflected by a boundary surface of the resin to be forwardly emitted by the light reflection member, and the emitter is thermally contacted with the reflection member to dissipate the heat generated from the light emitter.Type: ApplicationFiled: September 28, 2001Publication date: July 4, 2002Inventors: Shingo Tamai, Hayami Hosokawa, Hironobu Kiyomoto, Naru Yasuda
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Publication number: 20020057571Abstract: An optical device for an optical element to control a light path about emission light emitted from the optical element to external or incident light entered from external to the optical element, which includes a light reflecting member, a resin member covering a light reflection surface of the light reflecting member, and a bumper member interposed between the light reflecting member and the resin member. The resin member is provided with a boundary surface for almost totally reflecting light deviated from a predetermined region in front of the optical element, and the boundary surface of the resin member or the light reflecting member is so disposed that light deviating from the predetermined region in front of the optical element and passing between the optical element and an external of the optical device is reflected more than once with each of the boundary surface and the light reflecting member.Type: ApplicationFiled: September 28, 2001Publication date: May 16, 2002Inventors: Yoshimasa Osumi, Akira Matsui, Hironobu Kiyomoto
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Patent number: 5844682Abstract: Whether or not an object is present, the surface state of the object, the material constituting the object and the presence of scattering bodies are discriminated through a simple arrangement which includes a light-emitting element for projecting light upon an object to be sensed, and a polarization beam splitter upon which light reflected from the object (or light transmitted through or scattered from the object) impinges. Reflected light from the polarization beam splitter is received by a first light-receiving element, and transmitted light from the polarization beam splitter is received by a second light-receiving element. The aforesaid discrimination is performed on the basis of the value of S/P, S-P, S-kP or (S-P)/(S+P), where S and P represent light-reception signals from the first and second light-receiving elements, and k is a constant.Type: GrantFiled: March 20, 1995Date of Patent: December 1, 1998Assignee: Omron CorporationInventors: Hironobu Kiyomoto, Naru Yasuda, Kouichi Ekawa, Hayami Hosokawa
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Patent number: 5768026Abstract: A dichroic mirror of the present invention having a first portion including an H material layer having a high refractive index, and an M material layer having an intermediate refractive index, the H material layer and the M material layer being laminated repeatedly; and a second portion including an H material layer having a high refractive index, and an L material layer having a low refractive index, the H material layer and the L material layer being laminated repeatedly. An optical apparatus and detecting method of the present invention use the above dichroic mirror.Type: GrantFiled: August 28, 1997Date of Patent: June 16, 1998Assignee: Omron CorporationInventors: Hironobu Kiyomoto, Kouichi Ekawa, Hayami Hosokawa
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Patent number: 5615181Abstract: An optical read/write head for a magnetic-optic recording and reproducing unit having a beam splitter placed between a collimator lens and an objective lens. The optical path of the beam reflected by a recording disk is bent by the beam splitter and the beam strikes a polarizing beam splitter. The polarizing beam splitter splits the reflected beam into P and S polarized components whose optical axes form n angel of less than 90.degree.. The rays of the P and S polarized components strike respective light detecting elements and which are co-arranged on substantially the same surface.Type: GrantFiled: June 22, 1995Date of Patent: March 25, 1997Assignee: Omron CorporationInventors: Hayami Hosokawa, Tatsuo Ohgaki, Kouhei Tomita, Hironobu Kiyomoto, Naru Yasuda, Shinya Otsuki
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Patent number: D480160Type: GrantFiled: November 7, 2001Date of Patent: September 30, 2003Assignee: Omron CorporationInventors: Akira Matsui, Hironobu Kiyomoto