Patents by Inventor Kazunari Tada
Kazunari Tada 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: 8646290Abstract: A manufacturing apparatus of the present invention has a pair of dies that form each cylindrical surface, and a plane member that forms side surfaces of an element. The upper die and the lower die has a cylindrical surface which is worked so as to have generatrix which connects intersection points between a non-arc axis and a cylindrical section and between an arc center axis and the cylindrical section. The plane member is pressed against reference surfaces of the upper die and the lower die. In this state, a glass material is put between the upper die and the lower die, and a distance between the upper die and the lower die is decreased. As a result, the cylindrical surfaces of the upper die and the lower die and the plane of the plane member are transferred onto the glass material.Type: GrantFiled: November 13, 2009Date of Patent: February 11, 2014Assignee: Konica Minolta Opto, Inc.Inventors: Kazuyuki Ogura, Yoshihiro Kamada, Kojiro Takatori, Kazunari Tada
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Publication number: 20140027567Abstract: A landing gear assembly includes a control system configured to output an amount of operation corresponding to an operated physical amount; a wheel; a landing gear supported by a frame of the aircraft, and configured to rotatably support the wheel; a steering system configured to steer the wheel using the amount of operation as a command value; and a detection sensor configured not to output a detection signal when the aircraft flies in air, and to output the detection signal when the aircraft stays on ground. When the detection sensor does not output the detection signal, or when speed of the aircraft is higher than first limitation speed, the steering system orients rotation of the wheel in a longitudinal direction of the aircraft in disregard of the amount of operation.Type: ApplicationFiled: September 30, 2013Publication date: January 30, 2014Applicant: SUMITOMO PRECISION PRODUCTS CO., LTD.Inventors: Yasuto Onomichi, Kazunari Tada, Takeshi Otani, Hiroshi Morimoto
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Patent number: 8630750Abstract: A steering control equipment has a controller having a provisional-target-angular-position calculating section calculating a provisional target angular position of a steering mechanism corresponding to the operation amounts of a steering handle and rudder pedals, a speed setting section setting the aircraft speed on the basis of detected ground speed and airspeed, a target-angular-position limiting section outputting the provisional target angular position as a final target angular position when the calculated provisional target angular position is equal to or lower than a limit value corresponding to the set speed and outputting the limit value as a final target angular position when the calculated provisional target angular position is larger than the limit value, and a actuating control section controlling an actuating mechanism for actuating the steering mechanism so that the output final target angular position and the actual angular position of the steering mechanism detected coincide with each other.Type: GrantFiled: October 18, 2011Date of Patent: January 14, 2014Assignee: Sumitomo Precision Products Co, Ltd.Inventors: Kazunari Tada, Kazushi Furuichi, Yutaro Minami
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Publication number: 20120101664Abstract: A steering control equipment has a controller having a provisional-target-angular-position calculating section calculating a provisional target angular position of a steering mechanism corresponding to the operation amounts of a steering handle and rudder pedals, a speed setting section setting the aircraft speed on the basis of detected ground speed and airspeed, a target-angular-position limiting section outputting the provisional target angular position as a final target angular position when the calculated provisional target angular position is equal to or lower than a limit value corresponding to the set speed and outputting the limit value as a final target angular position when the calculated provisional target angular position is larger than the limit value, and a actuating control section controlling an actuating mechanism for actuating the steering mechanism so that the output final target angular position and the actual angular position of the steering mechanism detected coincide with each other.Type: ApplicationFiled: October 18, 2011Publication date: April 26, 2012Applicant: SUMITOMO PRECISION PRODUCTS CO., LTD.Inventors: Kazunari Tada, Kazushi Furuichi, Yutaro Minami
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Publication number: 20120007262Abstract: Provided is a method for manufacturing optical elements, the method including the following processes: a process to determine the wave-front aberration for a lens fabricated using a reference die, and then choose the integer multiple of a predetermined constant that is closest to the difference between a lens design value and the wave-front aberration for the lens fabricated using the reference die; and a process to determine the amount of aberration correction that cancels out the aforementioned integer multiple aberration, change the lens design so that either the low-order spherical aberration or the low-order astigmatism therefor becomes equal to the aberration correction, and fabricate a correction die from either a first or a second die, with the shape of the molding surface thereof changed on the basis of the changed design value. Then the die design value is decided upon, yielding a final die.Type: ApplicationFiled: March 11, 2010Publication date: January 12, 2012Inventors: Tadafumi Sakata, Youichi Ogawa, Kazunari Tada
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Publication number: 20110247365Abstract: Disclosed is a mold used as a bottom mold for manufacturing glass molded bodies by accepting molten glass droplets that are dripped in and by compression molding of the molten glass droplets in conjunction with a top mold. The mold is provided with a base material that has a mold surface for compression molding of molten glass drops, and a coating layer formed on the mold surface. The surface of the coating layer formed on the mold surface has a rough surface region that comprises the center of the mold surface, and a mirror finished region that surrounds the outside of the rough surface region and has a lower arithmetic mean roughness Ra than the rough surface region.Type: ApplicationFiled: December 8, 2009Publication date: October 13, 2011Inventors: Shuhei Hayakawa, Kazunari Tada
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Patent number: 7986604Abstract: An objective lens causes birefringence, which causes wave aberration in outgoing light from the objective lens. A coated objective lens has a dielectric multilayer film that can reduce astigmatism component of the wave aberration to 5 m? rms or smaller when 10 m? rms or larger astigmatism component of wave aberration is generated.Type: GrantFiled: December 6, 2007Date of Patent: July 26, 2011Assignee: Konica Minolta Opto, Inc.Inventors: Kazunari Tada, Youichi Ogawa, Nobuo Mushiake, Kazuyuki Nishi
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Publication number: 20100077799Abstract: Since a lens droplet contacts with an outer shape regulation frame 3 at an early stage and is formed to be a glass lens 100 by pressure in a fluidized state with less deformation, a positioning datum surface 102b and so forth can be formed accurately. Also, as a result that the melt droplet contacts with the outer shape regulation frame 3 at the early stage, a shape of a side surface 103 of the glass lens 100 can be formed accurately, and centering process after formed can be omitted.Type: ApplicationFiled: September 23, 2009Publication date: April 1, 2010Applicant: Konica Minolta Opto, Inc.Inventors: Kazunari TADA, Takashi Sannokyou, Shuhei Ashida
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Publication number: 20100058809Abstract: A manufacturing apparatus of the present invention has a pair of dies that form each cylindrical surface, and a plane member that forms side surfaces of an element. The upper die and the lower die has a cylindrical surface which is worked so as to have generatrix which connects intersection points between a non-arc axis and a cylindrical section and between an arc center axis and the cylindrical section. The plane member is pressed against reference surfaces of the upper die and the lower die. In this state, a glass material is put between the upper die and the lower die, and a distance between the upper die and the lower die is decreased. As a result, the cylindrical surfaces of the upper die and the lower die and the plane of the plane member are transferred onto the glass material.Type: ApplicationFiled: November 13, 2009Publication date: March 11, 2010Applicant: Konica Minolta Opto, Inc.Inventors: Kazuyuki Ogura, Yoshihiro Kamada, Kojiro Takatori, Kazunari Tada
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Publication number: 20080259773Abstract: An objective lens causes birefringence, which causes wave aberration in outgoing light from the objective lens. A coated objective lens has a dielectric multilayer film that can reduce astigmatism component of the wave aberration to 5 m? rms or smaller when 10 m? rms or larger astigmatism component of wave aberration is generated.Type: ApplicationFiled: December 6, 2007Publication date: October 23, 2008Inventors: Kazunari Tada, Youichi Ogawa, Nobuo Mushiake, Kazuyuki Nishi
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Patent number: 7379411Abstract: In a beam shaping device for converting the laser light emitted from a semiconductor laser light source from an elliptic beam to a circular beam, the light-entrance-side and light-exit-side surfaces of the beam shaping device both have a curvature only in the minor-axis direction of the cross section of the elliptic beam. Of the light-entrance-side and light-exit-side surfaces, one is a circular-arc cylindrical surface and the other is a non-circular-arc cylindrical surface. The beam shaping device fulfills prescribed conditions with respect to the center thickness, surface shapes, and/or other features.Type: GrantFiled: September 27, 2004Date of Patent: May 27, 2008Assignee: Konica Minolta Opto, Inc.Inventors: Kazunari Tada, Junji Hashimura, Yuichiro Ori
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Publication number: 20060260363Abstract: The present invention provides a method of efficiently mass-producing square-shaped optical elements having high decentering accuracy. For this reason, a molded article where a plurality of optical elements are arranged is manufactured by one-time molding by using one set of molds. The molded article obtained in such a manner is cut into individual optical elements.Type: ApplicationFiled: April 19, 2006Publication date: November 23, 2006Inventors: Kazunari Tada, Kazuyuki Ogura, Yoshihiro Kamada, Kojiro Takatori, Takashi Sannokyou
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Publication number: 20060250698Abstract: A manufacturing apparatus of the present invention has a pair of dies that form each cylindrical surface, and a plane member that forms side surfaces of an element. The upper die and the lower die has a cylindrical surface which is worked so as to have generatrix which connects intersection points between a non-arc axis and a cylindrical section and between an arc center axis and the cylindrical section. The plane member is pressed against reference surfaces of the upper die and the lower die. In this state, a glass material is put between the upper die and the lower die, and a distance between the upper die and the lower die is decreased. As a result, the cylindrical surfaces of the upper die and the lower die and the plane of the plane member are transferred onto the glass material.Type: ApplicationFiled: April 13, 2006Publication date: November 9, 2006Inventors: Kazuyuki Ogura, Yoshihiro Kamada, Kojiro Takatori, Kazunari Tada
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Patent number: 7116493Abstract: In a beam shaping device for converting the laser light emitted from a semiconductor laser light source from an elliptic beam to a circular beam, the light-entrance-side and light-exit-side surfaces of the beam shaping device both have a curvature only in the major-axis direction of the cross section of the elliptic beam. Of the light-entrance-side and light-exit-side surfaces, one is a circular-arc cylindrical surface and the other is a non-circular-arc cylindrical surface.Type: GrantFiled: September 27, 2004Date of Patent: October 3, 2006Assignee: Konica Minolta Opto, Inc.Inventors: Kazunari Tada, Junji Hashimura, Yuichiro Ori
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Publication number: 20050213224Abstract: In a beam shaping device for converting the laser light emitted from a semiconductor laser light source from an elliptic beam to a circular beam, the light-entrance-side and light-exit-side surfaces of the beam shaping device both have a curvature only in the major-axis direction of the cross section of the elliptic beam. Of the light-entrance-side and light-exit-side surfaces, one is a circular-arc cylindrical surface and the other is a non-circular-arc cylindrical surface.Type: ApplicationFiled: September 27, 2004Publication date: September 29, 2005Inventors: Kazunari Tada, Junji Hashimura, Yuichiro Ori
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Publication number: 20050213469Abstract: In a beam shaping device for converting the laser light emitted from a semiconductor laser light source from an elliptic beam to a circular beam, the light-entrance-side and light-exit-side surfaces of the beam shaping device both have a curvature only in the minor-axis direction of the cross section of the elliptic beam. Of the light-entrance-side and light-exit-side surfaces, one is a circular-arc cylindrical surface and the other is a non-circular-arc cylindrical surface. The beam shaping device fulfills prescribed conditions with respect to the center thickness, surface shapes, and/or other features.Type: ApplicationFiled: September 27, 2004Publication date: September 29, 2005Inventors: Kazunari Tada, Junji Hashimura, Yuichiro Ori
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Patent number: 6870694Abstract: A method for fabricating a prism that comprises a first and a second substrate, both translucent, bonded together with an optical thin film interposed at the interface in between and that is used with the interface inclined relative to the optical axis of incident laser light of a wavelength of 420 nm or shorter includes the step of bonding together the first and second substrates of which the difference ?N1 in refractive index at the wavelength of the laser light fulfills the condition: ?N1?|1/(0.3×104×NA×t)|, where t represents the thickness of the first and second substrates cemented together as measured along the optical axis of the laser light, and NA represents the numerical aperture of the incident laser light.Type: GrantFiled: November 18, 2003Date of Patent: March 22, 2005Assignee: Konica Minolta Opto, Inc.Inventors: Kazuyuki Nishi, Yuichiro Ori, Tomokazu Taguchi, Kazunari Tada
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Publication number: 20040184167Abstract: A method for fabricating a prism that comprises a first and a second substrate, both translucent, bonded together with an optical thin film interposed at the interface in between and that is used with the interface inclined relative to the optical axis of incident laser light of a wavelength of 420 nm or shorter includes the step of bonding together the first and second substrates of which the difference &Dgr;N1 in refractive index at the wavelength of the laser light fulfills the condition: &Dgr;N1≦|1/(0.3×104×NA×t)|, where t represents the thickness of the first and second substrates cemented together as measured along the optical axis of the laser light, and NA represents the numerical aperture of the incident laser light.Type: ApplicationFiled: November 18, 2003Publication date: September 23, 2004Applicant: KONICA MINOLTA OPTO, INC.Inventors: Kazuyuki Nishi, Yuichiro Ori, Tomokazu Taguchi, Kazunari Tada
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Patent number: RE41193Abstract: A method for fabricating a prism that comprises a first and a second substrate, both translucent, bonded together with an optical thin film interposed at the interface in between and that is used with the interface inclined relative to the optical axis of incident laser light of a wavelength of 420 nm or shorter includes the step of bonding together the first and second substrates of which the difference ?N1 in refractive index at the wavelength of the laser light fulfills the condition: ?N1?|1/(0.3×104×NA×t)|, where t represents the thickness of the first and second substrates cemented together as measured along the optical axis of the laser light, and NA represents the numerical aperture of the incident laser light.Type: GrantFiled: March 21, 2007Date of Patent: April 6, 2010Assignee: Konica Minolta Opto, Inc.Inventors: Kazuyuki Nishi, Yuichiro Ori, Tomokazu Taguchi, Kazunari Tada