Patents by Inventor Yoshihiko Hamada
Yoshihiko Hamada 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: 9632262Abstract: An optical module is formed of a first optical block and a second optical block each equipped with a lens the optical axis of which needs to be aligned, the blocks being positioned and secured to each other, and has stepwise positioning means. A positioning means includes spring pieces each having an abutting slope, and edges. Four spring pieces are formed in the second optical block such that their abutting slopes are disposed at four corners of the second optical block. Positioning is implemented when the abutting slopes meet the edges of the first optical block. Another positioning means includes a depressed part and a guide slope formed in one of the two optical blocks and a raised part formed in the other optical block. The raised part is fitted into the depressed part.Type: GrantFiled: April 15, 2015Date of Patent: April 25, 2017Assignee: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITEDInventors: Shuichi Aihara, Keiichi Mori, Takayoshi Yamauchi, Osamu Hashiguchi, Eiichi Asami, Yoshihiko Hamada, Masuo Nishimoto, Hideo Sugimoto, Akira Watanabe, Satoshi Kai
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Publication number: 20170075082Abstract: An optical module is formed of a first optical block and a second optical block each equipped with a lens the optical axis of which needs to be aligned, the blocks being positioned and secured to each other, and has stepwise positioning means. A positioning means includes spring pieces each having an abutting slope, and edges. Four spring pieces are formed in the second optical block such that their abutting slopes are disposed at four corners of the second optical block. Positioning is implemented when the abutting slopes meet the edges of the first optical block. Another positioning means includes a depressed part and a guide slope formed in one of the two optical blocks and a raised part formed in the other optical block. The raised part is fitted into the depressed part.Type: ApplicationFiled: April 15, 2015Publication date: March 16, 2017Applicant: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITEDInventors: Shuichi AIHARA, Keiichi MORI, Takayoshi YAMAUCHI, Osamu HASHIGUCHI, Eiichi ASAMI, Yoshihiko HAMADA, Masuo NISHIMOTO, Hideo SUGIMOTO, Akira WATANABE, Satoshi KAI
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Patent number: 8043882Abstract: A microminiature moving device has disposed on a single-crystal silicon substrate movable elements such as a movable rod and a movable comb electrode that are displaceable in parallel to the substrate surface and stationary parts that are fixedly secured to the single-crystal silicon substrate with an insulating layer sandwiched between. Depressions are formed in the surface regions of the single-crystal silicon substrate where no stationary parts are present and the movable parts are positioned above the depressions. The depressions form gaps large enough to prevent foreign bodies from causing shorts and malfunctioning of the movable parts.Type: GrantFiled: December 5, 2008Date of Patent: October 25, 2011Assignee: Japan Aviation Electronics Industry LimitedInventors: Keiichi Mori, Yoshichika Kato, Satoshi Yoshida, Kenji Kondou, Yoshihiko Hamada, Osamu Imaki
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Patent number: 7973373Abstract: A microminiature moving device has disposed on a single-crystal silicon substrate movable elements such as a movable rod and a movable comb electrode that are displaceable in parallel to the substrate surface and stationary parts that are fixedly secured to the single -crystal silicon substrate with an insulating layer sandwiched between. Depressions are formed in the surface regions of the single-crystal silicon substrate where no stationary parts are present and the movable parts are positioned above the depressions. The depressions form gaps large enough to prevent foreign bodies from causing shorts and malfunctioning of the movable parts.Type: GrantFiled: December 1, 2008Date of Patent: July 5, 2011Assignee: Japan Aviation Electronics Industry LimitedInventors: Keiichi Mori, Yoshichika Kato, Satoshi Yoshida, Kenji Kondou, Yoshihiko Hamada, Osamu Imaki
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Patent number: 7634166Abstract: Marker grooves of an optical fiber are formed by a marker groove forming device including at least, on a substrate, a fiber guide and optical fiber pressing springs formed on a side wall surface in the fiber guide. The optical fiber pressing springs include edges contacted and pressed to the side of an optical fiber stored in the fiber guide, and plate springs for pressing the edges to the side of the optical fiber with fulcra on the side wall surface in the fiber guide. The optical fiber is pressed to a side wall surface in the fiber guide, and the edges are formed at a predetermined distance from each other.Type: GrantFiled: September 2, 2008Date of Patent: December 15, 2009Assignee: Japan Aviation Electronics Ind. Ltd.Inventors: Osamu Imaki, Yoshihiko Hamada, Yoshichika Kato, Keiichi Mori, Kenji Kondou
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Patent number: 7582497Abstract: A micro-optic device including a complicate structure and a movable mirror is made to be manufactured in a reduced length of time. A silicon substrate and a single crystal silicon device layer with an intermediate layer of silicon dioxide interposed therebetween defines a substrate on which a layer of mask material is formed and is patterned to form a mask having the same pattern as the configuration of the intended optical device as viewed in plan view. A surface which is to be constricted as a mirror surface is chosen to be in a plane of the silicon crystal. Using the mask, the device layer is vertically etched by a reactive ion dry etching until the intermediate layer is exposed. Subsequently, using KOH solution, a wet etching which is anisotropic to the crystallographic orientation is performed with an etching rate which is on the order of 0.1 ?m/min for a time interval on the order of ten minutes is performed to convert the sidewall surface of the mirror into a smooth crystallographic surface.Type: GrantFiled: February 22, 2008Date of Patent: September 1, 2009Assignee: Japan Aviation Electroncis Industry LimitedInventors: Yoshichika Kato, Satoshi Yoshida, Keiichi Mori, Kenji Kondou, Yoshihiko Hamada, Osamu Imaki
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Patent number: 7580606Abstract: Marker grooves of an optical fiber are formed by a marker groove forming device including at least, on a substrate, a fiber guide and optical fiber pressing springs formed on a side wall surface in the fiber guide. The optical fiber pressing springs include edges contacted and pressed to the side of an optical fiber stored in the fiber guide, and plate springs for pressing the edges to the side of the optical fiber with fulcra on the side wall surface in the fiber guide. The optical fiber is pressed to a side wall surface in the fiber guide, and the edges are formed at a predetermined distance from each other.Type: GrantFiled: September 2, 2008Date of Patent: August 25, 2009Assignee: Japan Aviation Electronics Industry LimitedInventors: Osamu Imaki, Yoshihiko Hamada, Yoshichika Kato, Keiichi Mori, Kenji Kondou
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Publication number: 20090181487Abstract: A microminiature moving device has disposed on a single-crystal silicon substrate movable elements such as a movable rod and a movable comb electrode that are displaceable in parallel to the substrate surface and stationary parts that are fixedly secured to the single-crystal silicon substrate with an insulating layer sandwiched between. Depressions are formed in the surface regions of the single-crystal silicon substrate where no stationary parts are present and the movable parts are positioned above the depressions. The depressions form gaps large enough to prevent foreign bodies from causing shorts and malfunctioning of the movable parts.Type: ApplicationFiled: December 5, 2008Publication date: July 16, 2009Applicant: Japan Aviation Electronics Industry LimitedInventors: Keiichi Mori, Yoshichika Kato, Satoshi Yoshida, Kenji Kondou, Yoshihiko Hamada, Osamu Imaki
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Publication number: 20090146228Abstract: A microminiature moving device has disposed on a single-crystal silicon substrate movable elements such as a movable rod and a movable comb electrode that are displaceable in parallel to the substrate surface and stationary parts that are fixedly secured to the single-crystal silicon substrate with an insulating layer sandwiched between. Depressions are formed in the surface regions of the single-crystal silicon substrate where no stationary parts are present and the movable parts are positioned above the depressions. The depressions form gaps large enough to prevent foreign bodies from causing shorts and malfunctioning of the movable parts.Type: ApplicationFiled: December 1, 2008Publication date: June 11, 2009Applicant: Japan Aviation Electronics Industry LimitedInventors: Keiichi Mori, Yoshichika Kato, Satoshi Yoshida, Kenji Kondou, Yoshihiko Hamada, Osamu Imaki
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Patent number: 7515783Abstract: A micro-optic device including a complicate structure and a movable mirror is made to be manufactured in a reduced length of time. A silicon substrate and a single crystal silicon device layer with an intermediate layer of silicon dioxide interposed therebetween defines a substrate on which a layer of mask material is formed and is patterned to form a mask having the same pattern as the configuration of the intended optical device as viewed in plan view. A surface which is to be constructed as a mirror surface is chosen to be in a plane of the silicon crystal. Using the mask, the device layer is vertically etched by a reactive ion dry etching until the intermediate layer is exposed. Subsequently, using KOH solution, a wet etching which is anisotropic to the crystallographic orientation is performed with an etching rate which is on the order of 0.1 ?m/min for a time interval on the order of ten minutes is performed to convert the sidewall surface of the mirror into a smooth crystallographic surface.Type: GrantFiled: September 16, 2004Date of Patent: April 7, 2009Assignee: Japan Aviation Electronics Industry LimitedInventors: Yoshichika Kato, Satoshi Yoshida, Keiichi Mori, Kenji Kondou, Yoshihiko Hamada, Osamu Imaki
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Patent number: 7505658Abstract: An optical fiber device comprising a positioning/fixing substrate has a fiber guide and an optical fiber pressing spring formed in the fiber guide, and an optical fiber stored in the fiber guide. The optical fiber includes an end part having at least one marker groove. The fiber guide is a groove having two side wall surfaces. The optical fiber pressing spring includes a plate spring formed on one of the side wall surfaces in the fiber guide and an edge formed on the plate spring. The plate spring presses the edge to the side of the optical fiber with a fulcrum on one of the side wall surfaces, and the end part of the optical fiber is positioned by aligning the marker groove of the optical fiber with the edge of the optical fiber pressing spring.Type: GrantFiled: October 9, 2007Date of Patent: March 17, 2009Inventors: Osamu Imaki, Yoshihiko Hamada, Yoshichika Kato, Keiichi Mori, Kenji Kondou
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Patent number: 7476948Abstract: In a microminiature moving device that has disposed, on a single-crystal silicon substrate, movable elements (a movable rod 46, a movable comb electrode 49, etc.) displaceable in parallel to the substrate surface and stationary parts (a stationary part 40a, etc.), the stationary parts are fixedly secured to the single-crystal silicon substrate 61 with an insulating layer 62 sandwiched therebetween, and depressions 64 are formed in those surface regions of the single-crystal silicon substrate 61 where no stationary parts are present, and the movable parts are positioned above the depressions 64. The depressions 64 form gaps 50 large enough to prevent foreign bodies from causing troubles such as malfunction of the movable parts and shoring.Type: GrantFiled: February 28, 2005Date of Patent: January 13, 2009Assignee: Japan Aviation Electronics Industry LimitedInventors: Keiichi Mori, Yoshichika Kato, Satoshi Yoshida, Kenji Kondou, Yoshihiko Hamada, Osamu Imaki
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Patent number: 7476561Abstract: In a microminiature moving device that has disposed, on a single-crystal silicon substrate, movable elements (a movable rod 46, a movable comb electrode 49, etc.) displaceable in parallel to the substrate surface and stationary parts (a stationary part 40a, etc.), the stationary parts are fixedly secured to the single-crystal silicon substrate 61 with an insulating layer 62 sandwiched therebetween, and depressions 64 are formed in those surface regions of the single-crystal silicon substrate 61 where no stationary parts are present, and the movable parts are positioned above the depressions 64. The depressions 64 form gaps 50 large enough to prevent foreign bodies from causing troubles such as malfunction of the movable parts and shoring.Type: GrantFiled: April 19, 2006Date of Patent: January 13, 2009Assignee: Japan Aviation Electronics Industry LimitedInventors: Keiichi Mori, Yoshichika Kato, Satoshi Yoshida, Kenji Kondou, Yoshihiko Hamada, Osamu Imaki
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Publication number: 20090003774Abstract: Marker grooves of an optical fiber are formed by a marker groove forming device including at least, on a substrate, a fiber guide and optical fiber pressing springs formed on a side wall surface in the fiber guide. The optical fiber pressing springs include edges contacted and pressed to the side of an optical fiber stored in the fiber guide, and plate springs for pressing the edges to the side of the optical fiber with fulcra on the side wall surface in the fiber guide. The optical fiber is pressed to a side wall surface in the fiber guide, and the edges are formed at a predetermined distance from each other.Type: ApplicationFiled: September 2, 2008Publication date: January 1, 2009Applicant: Japan Aviation Electronics Industry LimitedInventors: Osamu Imaki, Yoshihiko Hamada, Yoshichika Kato, Keiichi Mori, Kenji Kondou
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Publication number: 20090003773Abstract: Marker grooves of an optical fiber are formed by a marker groove forming device including at least, on a substrate, a fiber guide and optical fiber pressing springs formed on a side wall surface in the fiber guide. The optical fiber pressing springs include edges contacted and pressed to the side of an optical fiber stored in the fiber guide, and plate springs for pressing the edges to the side of the optical fiber with fulcra on the side wall surface in the fiber guide. The optical fiber is pressed to a side wall surface in the fiber guide, and the edges are formed at a predetermined distance from each other.Type: ApplicationFiled: September 2, 2008Publication date: January 1, 2009Applicant: Japan Aviation Electronics Industry LimitedInventors: Osamu Imaki, Yoshihiko Hamada, Yoshichika Kato, Keiichi Mori, Kenji Kondou
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Publication number: 20090004765Abstract: A micro-optic device including a complicate structure and a movable mirror is made to be manufactured in a reduced length of time. A silicon substrate and a single crystal silicon device layer with an intermediate layer of silicon dioxide interposed therebetween defines a substrate on which a layer of mask material is formed and is patterned to form a mask having the same pattern as the configuration of the intended optical device as viewed in plan view. A surface which is to be constricted as a mirror surface is chosen to be in a plane of the silicon crystal. Using the mask, the device layer is vertically etched by a reactive ion dry etching until the intermediate layer is exposed. Subsequently, using KOH solution, a wet etching which is anisotropic to the crystallographic orientation is performed with an etching rate which is on the order of 0.1 ?m/min for a time interval on the order of ten minutes is performed to convert the sidewall surface of the mirror into a smooth crystallographic surface.Type: ApplicationFiled: February 22, 2008Publication date: January 1, 2009Applicant: Japan Aviation Electronics Industry LimitedInventors: Yoshichika Kato, Satoshi Yoshida, Keiichi Mori, Kenji Kondou, Yoshihiko Hamada, Osamu Imaki
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Patent number: 7468995Abstract: An optical switch, wherein the first and second output ports (optical fibers) are disposed on the opposite sides of the input port (optical fiber) so as to form acute angles with respect to the input port, the input port and the first output port are optically coupled to each other through a first mirror surface, and the input port and the second output port are optically coupled to each other through a second mirror surface. The incident angles of an incident light beam with respect to the mirror surfaces are equalized, and optical path lengths between the input port and the first and second output ports are equalized. The actuator inserts and withdraws the second mirror surface on a position at the front of the first mirror surface.Type: GrantFiled: April 24, 2007Date of Patent: December 23, 2008Assignee: Japan Aviation Electronics Industry LimitedInventors: Yoshichika Kato, Yoshihiko Hamada, Keiichi Mori, Osamu Imaki, Kenji Kondou
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Patent number: 7379635Abstract: The end parts of three optical waveguide parts are supported, mutually in parallel, on a substrate, the end part of the center optical waveguide part being one input port and the end parts of other two optical waveguide parts being a first and a second output port, the emitted light from the input port is switched, by means of a first moving mirror and a second moving mirror which are switchingly inserted into positions having the same distance from the end face of the input port, to either the first output port side or the second output port side, the light from the first moving mirror and the light from the second moving mirror being reflected respectively in a first fixed mirror or a second fixed mirror, the light being respectively coupled to the first or the second output port.Type: GrantFiled: October 13, 2006Date of Patent: May 27, 2008Assignee: Japan Aviation Electronics Industry LimitedInventors: Yoshichika Kato, Keiichi Mori, Kenji Kondou, Osamu Imaki, Yoshihiko Hamada
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Publication number: 20080089648Abstract: Marker grooves of an optical fiber are formed by a marker groove forming device including at least, on a substrate, a fiber guide and optical fiber pressing springs formed on a side wall surface in the fiber guide. The optical fiber pressing springs include edges contacted and pressed to the side of an optical fiber stored in the fiber guide, and plate springs for pressing the edges to the side of the optical fiber with fulcra on the side wall surface in the fiber guide. The optical fiber is pressed to a side wall surface in the fiber guide, and the edges are formed at a predetermined distance from each other.Type: ApplicationFiled: October 9, 2007Publication date: April 17, 2008Applicant: Japan Aviation Electronics Industry LimitedInventors: Osamu Imaki, Yoshihiko Hamada, Yoshichika Kato, Keiichi Mori, Kenji Kondou
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Patent number: D775082Type: GrantFiled: October 24, 2014Date of Patent: December 27, 2016Assignee: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITEDInventors: Satoshi Kai, Shuichi Aihara, Keiichi Mori, Takayoshi Yamauchi, Osamu Hashiguchi, Eiichi Asami, Yoshihiko Hamada, Masuo Nishimoto, Hideo Sugimoto, Akira Watanabe