Patents by Inventor Norihiro Fukuchi
Norihiro Fukuchi 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: 20200298345Abstract: A laser processing device configured to emit laser light on an object to perform laser processing of the object, the laser processing device including: a laser output unit configured to output the laser light; a spatial light modulator configured to reflect the laser light output from the laser output unit while modulating the laser light in accordance with a phase pattern; and an objective lens configured to converge the laser light from the spatial light modulator toward the object, in which the spatial light modulator includes an entrance surface, a reflective surface, and a modulation layer configured to display the phase pattern to modulate the laser light, and a dielectric multilayer film having a high reflectance region in a plurality of wavelength bands non-contiguous with each other is formed on the reflective surface.Type: ApplicationFiled: March 28, 2017Publication date: September 24, 2020Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Junji OKUMA, Mitsuhiro NAGAO, Norihiro FUKUCHI, Yasunori IGASAKI
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Patent number: 10621936Abstract: In an apparatus for modulating light, a spatial light modulator includes a plurality of pixels and configured to modulate input light in response to a drive voltage for each of the pixels. An input value setting unit is configured to set an input value for the each of pixels. The input value is a digital value, an entire gray level of the digital value is “N”, and “N” is a natural number. A converting unit is configured to convert the input value to a control value. A control value is a digital value, an entire gray level of the control value is “M”, and “M” is a natural number greater than “N”. A driving unit is configured to convert the control value to a voltage value and drive the each of the pixels in response to the drive voltage corresponding to the voltage value.Type: GrantFiled: December 21, 2018Date of Patent: April 14, 2020Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Naoya Matsumoto, Takashi Inoue, Norihiro Fukuchi, Yuji Kobayashi, Tsutomu Hara
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Publication number: 20190147816Abstract: In an apparatus for modulating light, a spatial light modulator includes a plurality of pixels and configured to modulate input light in response to a drive voltage for each of the pixels. An input value setting unit is configured to set an input value for the each of pixels. The input value is a digital value, an entire gray level of the digital value is “N”, and “N” is a natural number. A converting unit is configured to convert the input value to a control value. A control value is a digital value, an entire gray level of the control value is “M”, and “M” is a natural number greater than “N”. A driving unit is configured to convert the control value to a voltage value and drive the each of the pixels in response to the drive voltage corresponding to the voltage value.Type: ApplicationFiled: December 21, 2018Publication date: May 16, 2019Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Naoya MATSUMOTO, Takashi INOUE, Norihiro FUKUCHI, Yuji KOBAYASHI, Tsutomu HARA
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Patent number: 10192502Abstract: In an apparatus for modulating light, an spatial light modulator includes a plurality of pixels and configured to modulate input light in response to a drive voltage for each of the pixels. An input value setting unit is configured to set an input value for the each of pixels. The input value is a digital value, an entire gray level of the digital value is “N”, and “N” is a natural number. A converting unit is configured to convert the input value to a control value. A control value is a digital value, an entire gray level of the control value is “M”, and “M” is a natural number greater than “N”. A driving unit is configured to convert the control value to a voltage value and drive the each of the pixels in response to the drive voltage corresponding to the voltage value.Type: GrantFiled: October 16, 2015Date of Patent: January 29, 2019Assignee: HAMAMATSU PHOTONICS K.K.Inventors: Naoya Matsumoto, Takashi Inoue, Norihiro Fukuchi, Yuji Kobayashi, Tsutomu Hara
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Publication number: 20160063940Abstract: In an apparatus for modulating light, an spatial light modulator includes a plurality of pixels and configured to modulate input light in response to a drive voltage for each of the pixels. An input value setting unit is configured to set an input value for the each of pixels. The input value is a digital value, an entire gray level of the digital value is “N”, and “N” is a natural number. A converting unit is configured to convert the input value to a control value. A control value is a digital value, an entire gray level of the control value is “M”, and “M” is a natural number greater than “N”. A driving unit is configured to convert the control value to a voltage value and drive the each of the pixels in response to the drive voltage corresponding to the voltage value.Type: ApplicationFiled: October 16, 2015Publication date: March 3, 2016Applicant: Hamamatsu Photonics K.K.,Inventors: Naoya MATSUMOTO, Takashi INOUE, Norihiro FUKUCHI, Yuji KOBAYASHI, Tsutomu HARA
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Patent number: 9007286Abstract: The present invention relates to a phase modulating apparatus capable of highly accurately and easily correcting the phase modulation characteristic of a reflective electric address spatial light modulator even when a condition of input light is changed. In the LCOS phase modulating apparatus, an input unit inputs the condition of the input light, and a processing unit sets an input value for each pixel. A correction value deriving unit determines a correction condition according to the condition of the input light. A control input value converting unit converts the input value set for each pixel into a corrected input value based on the correction condition. An LUT processing unit converts the corrected input value into a voltage value, and drives each pixel by using a drive voltage equivalent to the converted voltage value.Type: GrantFiled: October 3, 2013Date of Patent: April 14, 2015Assignee: Hamamatsu Photonics K.K.Inventors: Naoya Matsumoto, Norihiro Fukuchi, Takashi Inoue, Yasunori Igasaki
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Patent number: 8957349Abstract: A laser machining device is provided with a laser light source, a spatial light modulator, a driving unit, a control unit, and a condensing optical system. The control unit selects a basic hologram corresponding to each basic machining pattern included in a whole machining pattern in a workpiece from a plurality of basic holograms stored by the storage unit, and determines a display region of the basic hologram in the spatial light modulator so that the deviation of the value of “I?/n” becomes small for the selected respective basic hologram when the intensity of a laser beam input to a display region of the basic hologram in the spatial light modulator is defined as I, the diffraction efficiency of the laser beam in the basic hologram is defined as ?, and the number of condensing points in a basic machining pattern corresponding to the basic hologram is defined as n.Type: GrantFiled: July 1, 2009Date of Patent: February 17, 2015Assignee: Hamamatsu Photonics K.K.Inventors: Naoya Matsumoto, Norihiro Fukuchi, Naohisa Mukozaka, Takashi Inoue, Yuu Takiguchi
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Patent number: 8941903Abstract: A laser processing apparatus including a laser light source, a phase modulation type spatial light modulator, a driving unit, a control unit, and an imaging optical system. A storage unit that is included in the driving unit stores a plurality of basic holograms corresponding to a plurality of basic processing patterns and a focusing hologram corresponding to a Fresnel lens pattern. The control unit arranges in parallel two or more basic holograms selected from the plurality of basic holograms stored in the storage unit, overlaps the focusing hologram with each of the basic holograms arranged in parallel to form the whole hologram, and presents the formed whole hologram to the spatial light modulator.Type: GrantFiled: June 14, 2013Date of Patent: January 27, 2015Assignee: Hamamatsu Photonics K.K.Inventors: Yuu Takiguchi, Naoya Matsumoto, Norihiro Fukuchi, Takashi Inoue, Tamiki Takemori, Naohisa Mukozaka
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Patent number: 8867113Abstract: A laser processing device includes a laser light source, a spatial light modulator, a control section, and a condensing optical system. The spatial light modulator, presents a hologram for modulating the phase of the laser light in each of a plurality of two-dimensionally arrayed pixels, and outputs the phase-modulated laser light. The control section causes a part of the phase-modulated laser light (incident light) to be condensed at a condensing position in a processing region as a laser light (contribution light) having a constant energy not less than a predetermined threshold X. The control section causes a laser light (unnecessary light) other than the contribution light condensed to the condensing position existing in the processing region to be dispersed and condensed at a condensing position existing in a non-processing region as a plurality of laser lights (non-contribution lights) having an energy less than the predetermined threshold.Type: GrantFiled: August 24, 2009Date of Patent: October 21, 2014Assignee: Hamamatsu Photonics K.K.Inventors: Naoya Matsumoto, Takashi Inoue, Norihiro Fukuchi, Haruyasu Ito
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Publication number: 20140232766Abstract: In an apparatus for modulating light, an spatial light modulator includes a plurality of pixels and configured to modulate input light in response to a drive voltage for each of the pixels. An input value setting unit is configured to set an input value for the each of pixels. The input value is a digital value, an entire gray level of the digital value is “N”, and “N” is a natural number. A converting unit is configured to convert the input value to a control value. A control value is a digital value, an entire gray level of the control value is “M”, and “M” is a natural number greater than “N”. A driving unit is configured to convert the control value to a voltage value and drive the each of the pixels in response to the drive voltage corresponding to the voltage value.Type: ApplicationFiled: April 29, 2014Publication date: August 21, 2014Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Naoya MATSUMOTO, Takashi INOUE, Norihiro FUKUCHI, Yuji KOBAYASHI, Tsutomu HARA
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Patent number: 8749463Abstract: A phase-modulating apparatus includes a spatial light modulator, an input value setting unit, a plurality of sets of reference data, a converting unit, and a driving unit. The input value setting unit sets an input value for each pixel. Each set of reference data corresponds to at least one pixel. The converting unit converts an input value inputted for each pixel to a control value by referencing the corresponding set of reference data. The driving unit converts the control value to a voltage value. The driving unit drives each pixel with a drive voltage corresponding to the voltage value. Each set of reference data correlates a plurality of first values from which input values are taken, and a plurality of second values from which control values are taken to ensure that the relationship between the plurality of first values and phase modulation amounts attained by the corresponding at least one pixel is a prescribed linear relationship.Type: GrantFiled: August 9, 2007Date of Patent: June 10, 2014Assignee: Hamamatsu Photonics K.K.Inventors: Naoya Matsumoto, Takashi Inoue, Norihiro Fukuchi, Yuji Kobayashi, Tsutomu Hara
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Publication number: 20140036182Abstract: The present invention relates to a phase modulating apparatus capable of highly accurately and easily correcting the phase modulation characteristic of a reflective electric address spatial light modulator even when a condition of input light is changed. In the LCOS phase modulating apparatus, an input unit inputs the condition of the input light, and a processing unit sets an input value for each pixel. A correction value deriving unit determines a correction condition according to the condition of the input light. A control input value converting unit converts the input value set for each pixel into a corrected input value based on the correction condition. An LUT processing unit converts the corrected input value into a voltage value, and drives each pixel by using a drive voltage equivalent to the converted voltage value.Type: ApplicationFiled: October 3, 2013Publication date: February 6, 2014Applicant: HAMAMATSU PHOTONICS K.K.Inventors: Naoya MATSUMOTO, Norihiro FUKUCHI, Takashi INOUE, Yasunori IGASAKI
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Patent number: 8575514Abstract: A light irradiation device and method for irradiating converged light with an object include a light source configured to output a light, a phase-modulating spatial light modulator, a controller, and a converging optical system. The phase-modulating spatial light modulator is configured to input the light outputted from the light source and to display a hologram modulating a phase of the light at each of a plurality of pixels arranged two-dimensionally, and outputs the phase-modulated light. The controller is configured to cause the spatial light modulator to display a hologram such that the light outputted from the spatial light modulator is converged at a plurality of converging positions. The controller causes the spatial light modulator to display a first hologram and performs a feedback of the first hologram so as to modify the first hologram. The modifying of the first hologram is performed by measuring intensity of the light converged.Type: GrantFiled: November 15, 2012Date of Patent: November 5, 2013Assignee: Hamamatsu Photonics K.K.Inventors: Naoya Matsumoto, Takashi Inoue, Norihiro Fukuchi, Haruyasu Ito, Yuu Takiguchi
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Patent number: 8576206Abstract: The present invention relates to a phase modulating apparatus capable of highly accurately and easily correcting the phase modulation characteristic of a reflective electric address spatial light modulator even when a condition of input light is changed. In the LCOS phase modulating apparatus, an input unit inputs the condition of the input light, and a processing unit sets an input value for each pixel. A correction value deriving unit determines a correction condition according to the condition of the input light. A control input value converting unit converts the input value set for each pixel into a corrected input value based on the correction condition. An LUT processing unit converts the corrected input value into a voltage value, and drives each pixel by using a drive voltage equivalent to the converted voltage value.Type: GrantFiled: December 4, 2008Date of Patent: November 5, 2013Assignee: Hamamatsu Photonics K.K.Inventors: Naoya Matsumoto, Norihiro Fukuchi, Takashi Inoue, Yasunori Igasaki
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Publication number: 20130286453Abstract: A laser processing apparatus including a laser light source, a phase modulation type spatial light modulator, a driving unit, a control unit, and an imaging optical system. A storage unit that is included in the driving unit stores a plurality of basic holograms corresponding to a plurality of basic processing patterns and a focusing hologram corresponding to a Fresnel lens pattern. The control unit arranges in parallel two or more basic holograms selected from the plurality of basic holograms stored in the storage unit, overlaps the focusing hologram with each of the basic holograms arranged in parallel to form the whole hologram, and presents the formed whole hologram to the spatial light modulator.Type: ApplicationFiled: June 14, 2013Publication date: October 31, 2013Inventors: Yuu TAKIGUCHI, Naoya MATSUMOTO, Norihiro FUKUCHI, Takashi INOUE, Tamiki TAKEMORI, Naohisa MUKOZAKA
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Patent number: 8553733Abstract: A light source device 1 includes a laser light source 10 and an optical phase modulator 15 or the like. The optical phase modulator 15 inputs coherent light output from the laser light source 10 and transmitted through a beam splitter 14, phase-modulates the light according to the position on a beam cross section of the light, and outputs the phase-modulated light to the beam splitter 14. When (p+1) areas sectioned by p circumferences centered on a predetermined position are set on a beam cross section of light input to the optical phase modulator 15, the more outside each of the (p+1) areas is, the wider the radial width of the area, the amount of phase modulation is constant in each of the (p+1) areas, and the amounts of phase modulation differ by ? between two adjacent areas out of the (p+1) areas.Type: GrantFiled: February 21, 2008Date of Patent: October 8, 2013Assignee: Hamamatsu Photonics K.K.Inventors: Taro Ando, Yoshiyuki Ohtake, Naoya Matsumoto, Takashi Inoue, Haruyoshi Toyoda, Norihiro Fukuchi
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Patent number: 8525772Abstract: The display area selection circuit selects a desired display area. The signal generating circuit sets a period of each shift signal generated while the selection position of the pixel diode is between the shift start position and the display start position shorter than a period of each shift signal generated while the selection position of the pixel diode is between the display start position and the display end position.Type: GrantFiled: January 18, 2008Date of Patent: September 3, 2013Assignee: Hamamatsu Photonics K.K.Inventors: Hiroshi Tanaka, Takashi Inoue, Munenori Takumi, Norihiro Fukuchi, Naoya Matsumoto
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Patent number: 8482829Abstract: A laser processing apparatus 1 includes a laser light source 10, a phase modulation type spatial light modulator 20, a driving unit 21, a control unit 22, and an imaging optical system 30. The imaging optical system 30 may be a telecentric optical system. A storage unit 21A included in the driving unit stores a plurality of basic holograms corresponding to a plurality of basic processing patterns and a focusing hologram corresponding to a Fresnel lens pattern. The control unit 22 arranges in parallel two or more basic holograms selected from the plurality of basic holograms stored in the storage unit 21A, overlaps the focusing hologram with each of the basic holograms arranged in parallel to form the whole hologram, and presents the formed whole hologram to the spatial light modulator 20.Type: GrantFiled: September 24, 2009Date of Patent: July 9, 2013Assignee: Hamamatsu Photonics K.K.Inventors: Yuu Takiguchi, Naoya Matsumoto, Norihiro Fukuchi, Takashi Inoue, Tamiki Takemori, Naohisa Mukozaka
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Patent number: 8324529Abstract: A laser machining device 1 includes a laser light source 10, a spatial light modulator 20, a controller 22, a converging optical system 30, and a shielding member 40. The phase-modulating spatial light modulator 20 inputs a laser beam outputted from the laser light source 10, displays a hologram modulating a phase of the laser beam at each of a plurality of pixels arranged two-dimensionally, and outputs the phase-modulated laser beam. The controller 22 causes the spatial light modulator 20 to display a plurality of holograms sequentially, lets the converging optical system 30 converge the laser beam outputted from the spatial light modulator 20 at converging positions having a fixed number of M, selectively places N converging positions out of the M converging positions into a machining region 91, and machines an object to be machined 90.Type: GrantFiled: August 26, 2008Date of Patent: December 4, 2012Assignee: Hamamatsu Photonics K.K.Inventors: Naoya Matsumoto, Takashi Inoue, Norihiro Fukuchi, Haruyasu Ito, Yuu Takiguchi
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Patent number: 8295321Abstract: A laser light source 1 is provided with a first reflection mirror 11, a laser medium 12, an aperture 13, an output mirror 14, a half mirror 15, a light beam diameter adjuster 16, and a second reflection mirror 17, and outputs laser oscillation light 31 reflected by the half mirror 15 to the outside. The main resonator is composed by the first reflection mirror 11 and the output mirror 14 disposed so as to be opposed to each other with the laser medium 12 placed therebetween. The external resonator is composed by the output mirror 14 and the second reflection mirror 17 disposed so as to be opposed to each other. The second reflection mirror 17 is configured such that it gives amplitude or phase variations to respective positions in the section of a light beam when the light is reflected, the second reflection mirror presents an amplitude or phase variation distribution, and determines the transverse mode of the laser oscillation light 31 based on the amplitude or phase variation distribution.Type: GrantFiled: May 21, 2009Date of Patent: October 23, 2012Assignee: Hamamatsu Photonics K.K.Inventors: Taro Ando, Haruyasu Ito, Yoshiyuki Ohtake, Takashi Inoue, Naoya Matsumoto, Norihiro Fukuchi