Patents by Inventor Nozomu HIROKUBO

Nozomu HIROKUBO 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).

  • Publication number: 20210263298
    Abstract: An optical module includes a wavelength variable interference filter having a fixed reflective film, a movable reflective film which faces the fixed reflective film with a gap between reflective films interposed therebetween, and an electrostatic actuator that changes the gap between reflective films, and a gap control unit that controls the electrostatic actuator. The gap control unit controls the electrostatic actuator on the basis of an order which is set in accordance with a wavelength to be measured, and changes the gap between the reflective films.
    Type: Application
    Filed: May 7, 2021
    Publication date: August 26, 2021
    Inventors: Tomonori MATSUSHITA, Nozomu HIROKUBO
  • Publication number: 20210191104
    Abstract: An optical filter device includes a wavelength variable interference filter that has a fixed substrate provided with a fixed reflective film and a movable substrate provided with a movable reflective film, a casing that has an inner space for storing the wavelength variable interference filter therein, and a fixation portion that fixes the wavelength variable interference filter to the casing. In addition, the fixation portion is provided between a side surface of the fixed substrate and an inner surface of the casing.
    Type: Application
    Filed: March 8, 2021
    Publication date: June 24, 2021
    Inventor: Nozomu HIROKUBO
  • Patent number: 11029509
    Abstract: An optical module includes a wavelength variable interference filter having a fixed reflective film, a movable reflective film which faces the fixed reflective film with a gap between reflective films interposed therebetween, and an electrostatic actuator that changes the gap between reflective films, and a gap control unit that controls the electrostatic actuator. The gap control unit controls the electrostatic actuator on the basis of an order which is set in accordance with a wavelength to be measured, and changes the gap between the reflective films.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: June 8, 2021
    Inventors: Tomonori Matsushita, Nozomu Hirokubo
  • Publication number: 20210167698
    Abstract: An actuator drive apparatus according to a first aspect includes a first member, a second member that faces the first member via a gap, a gap sensor that detects a dimension of the gap, a first actuator that changes the dimension of the gap through input of a first voltage signal, and a second actuator that changes the dimension of the gap through input of a second voltage signal, in which the first voltage signal is a voltage signal that becomes a constant bias voltage after a lapse of a predetermined time, and includes an overshoot signal larger than the bias voltage before the lapse of the predetermined time, and the second voltage signal is a voltage signal that is feedback-controlled so that a detection value detected by the gap sensor approaches a target value.
    Type: Application
    Filed: November 30, 2020
    Publication date: June 3, 2021
    Inventor: Nozomu HIROKUBO
  • Publication number: 20210157125
    Abstract: A spectral apparatus includes: an interference filter that includes a pair of reflection films and outputs light having a spectral wavelength corresponding to a gap size between the pair of reflection films; a gap sensor that detects the gap size; and one or more processors configured to detect an error based on a difference between the spectral wavelength corresponding to the gap size detected by the gap sensor and a target wavelength of light to be output from the interference filter. The one or more processors detect an error when an integration value obtained by integrating, on a time axis, an absolute value of the difference exceeds a threshold value.
    Type: Application
    Filed: November 20, 2020
    Publication date: May 27, 2021
    Inventor: Nozomu HIROKUBO
  • Patent number: 10976538
    Abstract: An optical filter device includes a wavelength variable interference filter that has a fixed substrate provided with a fixed reflective film and a movable substrate provided with a movable reflective film, a casing that has an inner space for storing the wavelength variable interference filter therein, and a fixation portion that fixes the wavelength variable interference filter to the casing. In addition, the fixation portion is provided between a side surface of the fixed substrate and an inner surface of the casing.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: April 13, 2021
    Inventor: Nozomu Hirokubo
  • Patent number: 10782653
    Abstract: An actuator apparatus includes a pair of substrates facing each other; a plurality of bias actuators that each vary a gap dimension of a gap between the pair of substrates; a gap detection portion that detects the gap dimension; and a voltage control unit that controls driving of each of the bias actuators on the basis of the detected gap dimension. The bias actuators are located asymmetric relative to a driving central axis and are mutually independently driven; and the voltage control unit derives driving parameters for use in driving the bias actuators, on the basis of voltages and gap dimensions obtained by sequentially switching and driving the bias actuators on by one.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: September 22, 2020
    Assignee: Seiko Epson Corporation
    Inventor: Nozomu Hirokubo
  • Publication number: 20200264425
    Abstract: An optical filter device includes a wavelength variable interference filter that includes a pair of reflective films which face each other, and a fixed substrate in which one of the pair of reflective films is provided; a base to which the fixed substrate is fixed; and a fixing member which fixes one place on the fixed substrate to the base, a surface which is on other place of the one place of the substrate and the base are disposed with a gap therebetween.
    Type: Application
    Filed: May 8, 2020
    Publication date: August 20, 2020
    Inventors: Daisuke SAITO, Satoshi FUJISAWA, Yasushi MATSUNO, Nozomu HIROKUBO
  • Patent number: 10712200
    Abstract: A spectroscopic apparatus includes: a spectroscopic module; a temperature detector that detects a temperature of the spectroscopic module; and a module controller that controls the spectroscopic module, in which the spectroscopic module includes an interference filter that has a gap changing unit which changes a dimension of a gap between a pair of reflection films, and a capacity detection circuit that outputs a detection signal in accordance with an electrostatic capacity between the pair of reflection films, and in which the module controller corrects a target value of the detection signal that is output from the capacity detection circuit, based on a temperature characteristic of the spectroscopic module and a detection temperature that is detected by the temperature detector, and controls the voltage that is to be applied to the gap changing unit, that the detection signal that is output from the capacity detection circuit is the corrected target value.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: July 14, 2020
    Assignee: Seiko Epson Corporation
    Inventor: Nozomu Hirokubo
  • Patent number: 10684463
    Abstract: An optical filter device includes a wavelength variable interference filter that includes a pair of reflective films which face each other, and a fixed substrate in which one of the pair of reflective films is provided; a base to which the fixed substrate is fixed; and a fixing member which fixes one place on the fixed substrate to the base, a surface which is on other place of the oneplace of the substrate and the base are disposed with a gap therebetween.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: June 16, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Daisuke Saito, Satoshi Fujisawa, Yasushi Matsuno, Nozomu Hirokubo
  • Publication number: 20200183146
    Abstract: An optical module includes a wavelength variable interference filter having a fixed reflective film, a movable reflective film which faces the fixed reflective film with a gap between reflective films interposed therebetween, and an electrostatic actuator that changes the gap between reflective films, and a gap control unit that controls the electrostatic actuator. The gap control unit controls the electrostatic actuator on the basis of an order which is set in accordance with a wavelength to be measured, and changes the gap between the reflective films.
    Type: Application
    Filed: February 12, 2020
    Publication date: June 11, 2020
    Inventors: Tomonori MATSUSHITA, Nozomu HIROKUBO
  • Patent number: 10674042
    Abstract: A color measurement apparatus includes a color measurement portion, a carriage, and a movement mechanism the color measurement portion starts color measurement after a predetermined initialization process, a moving section between patches from a point P1 to a point P3 overlaps an initialization section where the spot moves at the time of performing the initialization process, and the moving section between the patches is a section between a forward point having a distance as a radius of the spot with respect to the X direction and a backward point having a distance as a radius of the spot with respect to the X direction, based on a boundary of the patches.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: June 2, 2020
    Assignee: Seiko Epson Corporation
    Inventor: Nozomu Hirokubo
  • Publication number: 20200073034
    Abstract: An optical device includes an optical member having a plurality of first optical layers and a plurality of second optical layers having a refractive index different from that of the first optical layer in which the first optical layers and the second optical layers are laminated, and a layer thickness changing electrode that changes a thickness of the first optical layer in a lamination direction of the first optical layers and the second optical layers, in which the optical member is provided in a pair, and the pair of optical members is disposed to face each other through a gap, and a gap changing driver that changes a dimension of the gap.
    Type: Application
    Filed: August 29, 2019
    Publication date: March 5, 2020
    Inventors: Tomonori MATSUSHITA, Teruyuki NISHIMURA, Nozomu HIROKUBO
  • Publication number: 20190285871
    Abstract: A spectroscopic measurement apparatus includes a fixed substrate, a movable substrate, and a wavelength variable interference filter which includes an electrostatic actuator for changing the gap dimension between the substrates, a vibration disturbance detection unit which detects vibration added to the wavelength variable interference filter, and a bias driving unit which applies a feed-forward voltage based on a detected value of the vibration disturbance detection unit to the electrostatic actuator.
    Type: Application
    Filed: May 23, 2019
    Publication date: September 19, 2019
    Inventor: Nozomu HIROKUBO
  • Publication number: 20190265103
    Abstract: A spectroscopic apparatus includes: a spectroscopic module; a temperature detector that detects a temperature of the spectroscopic module; and a module controller that controls the spectroscopic module, in which the spectroscopic module includes an interference filter that has a gap changing unit which changes a dimension of a gap between a pair of reflection films, and a capacity detection circuit that outputs a detection signal in accordance with an electrostatic capacity between the pair of reflection films, and in which the module controller corrects a target value of the detection signal that is output from the capacity detection circuit, based on a temperature characteristic of the spectroscopic module and a detection temperature that is detected by the temperature detector, and controls the voltage that is to be applied to the gap changing unit, that the detection signal that is output from the capacity detection circuit is the corrected target value.
    Type: Application
    Filed: February 25, 2019
    Publication date: August 29, 2019
    Inventor: Nozomu HIROKUBO
  • Patent number: 10330917
    Abstract: An optical filter device includes a wavelength variable interference filter that includes a pair of reflective films which face each other, and a fixed substrate in which one of the pair of reflective films is provided; a base to which the fixed substrate is fixed; and a fixing member which fixes one place on the fixed substrate to the base, a surface which is on other place of the one place of the substrate and the base are disposed with a gap therebetween.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: June 25, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Daisuke Saito, Satoshi Fujisawa, Yasushi Matsuno, Nozomu Hirokubo
  • Publication number: 20190146206
    Abstract: An optical filter device includes a wavelength variable interference filter that includes a pair of reflective films which face each other, and a fixed substrate in which one of the pair of reflective films is provided; a base to which the fixed substrate is fixed; and a fixing member which fixes one place on the fixed substrate to the base, a surface which is on other place of the oneplace of the substrate and the base are disposed with a gap therebetween.
    Type: Application
    Filed: January 9, 2019
    Publication date: May 16, 2019
    Inventors: Daisuke SAITO, Satoshi FUJISAWA, Yasushi MATSUNO, Nozomu HIROKUBO
  • Publication number: 20180321643
    Abstract: An actuator apparatus includes a pair of substrates facing each other; a plurality of bias actuators that each vary a gap dimension of a gap between the pair of substrates; a gap detection portion that detects the gap dimension; and a voltage control unit that controls driving of each of the bias actuators on the basis of the detected gap dimension. The bias actuators are located asymmetric relative to a driving central axis and are mutually independently driven; and the voltage control unit derives driving parameters for use in driving the bias actuators, on the basis of voltages and gap dimensions obtained by sequentially switching and driving the bias actuators on by one.
    Type: Application
    Filed: June 29, 2018
    Publication date: November 8, 2018
    Inventor: Nozomu HIROKUBO
  • Patent number: 10113909
    Abstract: A variable wavelength interference filter is fixed to the base, and the fixing material fixes at least one of the substrates to the base via at least one location of one surface side along a substrate thickness direction. A first order resonance frequency of the variable wavelength interference filter in which a fixing position of the fixing material is used as a fixed end is less than or equal to half a value of a first order resonance frequency of the movable section.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: October 30, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Nozomu Hirokubo, Yasushi Matsuno
  • Publication number: 20180255208
    Abstract: A color measurement apparatus includes a color measurement portion, a carriage, and a movement mechanism the color measurement portion starts color measurement after a predetermined initialization process, a moving section between patches from a point P1 to a point P3 overlaps an initialization section where the spot moves at the time of performing the initialization process, and the moving section between the patches is a section between a forward point having a distance as a radius of the spot with respect to the X direction and a backward point having a distance as a radius of the spot with respect to the X direction, based on a boundary of the patches.
    Type: Application
    Filed: May 2, 2018
    Publication date: September 6, 2018
    Inventor: Nozomu HIROKUBO