Patents by Inventor Yoshitaka Teraoka
Yoshitaka Teraoka 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: 20230288330Abstract: Provided are an optical system for measuring optical characteristics and a device for measuring optical characteristics capable of acquiring a two-dimensional image close to visual observation in addition to measurement of optical characteristics of a measurement target. The optical system for measuring optical characteristics includes a first optical system (11) that captures an infinite conjugate image and a second optical system (12) that captures a conjugate image of a measurement target. The first optical system (11) and the second optical system (12) sharing a first lens group (G1) are arranged on two optical axes separated by an optical element (5) that deflects an optical axis, respectively, and are configured as one measuring optical system.Type: ApplicationFiled: May 13, 2021Publication date: September 14, 2023Inventors: TAKASHI KAWASAKI, YOSHITAKA TERAOKA, TAKUSHI UDA, SYOGO MOCHIDA, KENJI KONNO
-
Publication number: 20230048563Abstract: A colorimeter comprises a colorimetric value obtaining means to obtain a colorimetric value by performing color measurement on a measuring sample; a reference value obtaining means to obtain a reference value; a computing means to, using a color difference formula, ?E*94, compute ?L*94, ?a*94, and ?b*94 with reference to the colorimetric value obtained by the colorimetric value obtaining portion and the reference value obtained by the reference value obtaining portion, the ?L*94, ?a*94, and ?b*94 having a relation of ?E*94=[(?L*94)2+(?a*94)2*(?b*94)2]1/2 where the ?L*94 corresponds to a difference in lightness, the ?a*94 corresponds to a difference in red and green, and the ?b*94 corresponds to a difference in blue and yellow; and a display means to display computational results obtained by the computing means.Type: ApplicationFiled: December 23, 2020Publication date: February 16, 2023Inventors: Yoshitaka TERAOKA, Tomomi SETOGUCHI
-
Patent number: 11280677Abstract: Colorimeter having first and second illumination units disposed symmetrically to a reference line in a prescribed plane, first and second light-receiving parts disposed symmetrically to the reference line in the prescribed plane, a calculation unit for determining color information about a measurement object, and an opposing wall that opposes the measurement object when it is measured. The opposing wall has an abutting part that abuts the measurement object when it is measured. The abutting part has a pair of first abutting parts disposed on two sides of a measurement opening to flank the measurement opening; and a pair of second abutting parts disposed on an orthogonal line orthogonal to a first-abutting-part connection line that connects the pair of first abutting parts to each other, the pair of second abutting parts being disposed on two sides of the first-abutting-part connection line to flank the first-abutting-part connection line.Type: GrantFiled: July 5, 2017Date of Patent: March 22, 2022Assignee: Konica Minolta, Inc.Inventors: Hiroki Aomatsu, Shinichi Iida, Wataru Yamaguchi, Yoshitaka Teraoka, Yoshihisa Abe
-
Patent number: 11231359Abstract: A multi-angle colorimeter includes an index calculation unit that calculates, based on a predetermined calculation formula, an index corresponding to luminance of a glittering material used in metallic coating or pearl coating by using optical parameters for color evaluation of the metallic coating or pearl coating on a surface of an object.Type: GrantFiled: September 11, 2018Date of Patent: January 25, 2022Assignee: Konica Minolta, Inc.Inventors: Yoshitaka Teraoka, Tomomi Setoguchi
-
Patent number: 11009451Abstract: A multi-angle colorimeter includes an index calculation unit that calculates, based on a predetermined calculation formula, an index corresponding to a particle diameter of a glittering material, which is used for metallic coating or pearl coating, using optical parameters used in color evaluation of the metallic coating or pearl coating on a surface of an object.Type: GrantFiled: September 11, 2018Date of Patent: May 18, 2021Assignee: KONICA MINOLTA, INC.Inventors: Yoshitaka Teraoka, Tomomi Setoguchi
-
Patent number: 10989593Abstract: First and second measurement operations are performed according to each of a plurality of geometric conditions while keeping the geometric condition. In the first measurement operation, illumination light is radiated from a first light radiating position toward a measurement target position and spectroscopic measurement is performed on reflected light traveling from the measurement target position toward a first light receiving position. In the second measurement operation, illumination light is radiated from a second light radiating position toward a measurement target position and spectroscopic measurement is performed on reflected light traveling from the measurement target position toward a second light receiving position. The two spectroscopic measurement results are averaged. The second light radiating position and the second light receiving position are respectively disposed symmetrical to the first light radiating position and the first light receiving position with respect to a reference axis.Type: GrantFiled: June 14, 2016Date of Patent: April 27, 2021Assignee: Konica Minolta, Inc.Inventors: Shinichi Iida, Yoshitaka Teraoka
-
Publication number: 20200378887Abstract: A multi-angle colorimeter includes an index calculation unit that calculates, based on a predetermined calculation formula, an index corresponding to luminance of a glittering material used in metallic coating or pearl coating by using optical parameters for color evaluation of the metallic coating or pearl coating on a surface of an object.Type: ApplicationFiled: September 11, 2018Publication date: December 3, 2020Inventors: Yoshitaka TERAOKA, Tomomi SETOGUCHI
-
Publication number: 20200363319Abstract: A multi-angle colorimeter includes an index calculation unit that calculates, based on a predetermined calculation formula, an index corresponding to a particle diameter of a glittering material, which is used for metallic coating or pearl coating, using optical parameters used in color evaluation of the metallic coating or pearl coating on a surface of an object.Type: ApplicationFiled: September 11, 2018Publication date: November 19, 2020Inventors: Yoshitaka TERAOKA, Tomomi SETOGUCHI
-
Patent number: 10648910Abstract: A difference between a peak reflectance of a first wavelength component and a reflectance of a second wavelength component having a predetermined wavelength among reflectances of a plurality of wavelength components constituting reflected light in a highlight direction from a glitter material-containing coating film is set as a first difference value. Reflectance is measured of the first and second wavelength components of the reflected light in the highlight direction for the coating film corresponding to a measurement object. A first difference value is calculated by using the measurement result. A storage stores in advance correlation information indicating a correlation between the first difference value and an index value indicating predetermined physical characteristics of a glitter material contained in the coating film.Type: GrantFiled: April 19, 2017Date of Patent: May 12, 2020Assignee: Konica Minolta, Inc.Inventors: Yuta Yamanoi, Tomomi Setoguchi, Yoshitaka Teraoka
-
Publication number: 20190293560Abstract: A difference between a peak reflectance of a first wavelength component and a reflectance of a second wavelength component having a predetermined wavelength among reflectances of a plurality of wavelength components constituting reflected light in a highlight direction from a glitter material-containing coating film is set as a first difference value. Reflectance is measured of the first and second wavelength components of the reflected light in the highlight direction for the coating film corresponding to a measurement object. A first difference value is calculated by using the measurement result. A storage stores in advance correlation information indicating a correlation between the first difference value and an index value indicating predetermined physical characteristics of a glitter material contained in the coating film.Type: ApplicationFiled: April 19, 2017Publication date: September 26, 2019Inventors: Yuta YAMANOI, Tomomi SETOGUCHI, Yoshitaka TERAOKA
-
Publication number: 20190154508Abstract: Colorimeter having first and second illumination units disposed symmetrically to a reference line in a prescribed plane, first and second light-receiving parts disposed symmetrically to the reference line in the prescribed plane, a calculation unit for determining color information about a measurement object, and an opposing wall that opposes the measurement object when it is measured. The opposing wall has an abutting part that abuts the measurement object when it is measured. The abutting part has a pair of first abutting parts disposed on two sides of a measurement opening to flank the measurement opening; and a pair of second abutting parts disposed on an orthogonal line orthogonal to a first-abutting-part connection line that connects the pair of first abutting parts to each other, the pair of second abutting parts being disposed on two sides of the first-abutting-part connection line to flank the first-abutting-part connection line.Type: ApplicationFiled: July 5, 2017Publication date: May 23, 2019Inventors: Hiroki AOMATSU, Shinichi IIDA, Wataru YAMAGUCHI, Yoshitaka TERAOKA, Yoshihisa ABE
-
Publication number: 20180180480Abstract: First and second measurement operations are performed according to each of a plurality of geometric conditions while keeping the geometric condition. In the first measurement operation, illumination light is radiated from a first light radiating position toward a measurement target position and spectroscopic measurement is performed on reflected light traveling from the measurement target position toward a first light receiving position. In the second measurement operation, illumination light is radiated from a second light radiating position toward a measurement target position and spectroscopic measurement is performed on reflected light traveling from the measurement target position toward a second light receiving position. The two spectroscopic measurement results are averaged. The second light radiating position and the second light receiving position are respectively disposed symmetrical to the first light radiating position and the first light receiving position with respect to a reference axis.Type: ApplicationFiled: June 14, 2016Publication date: June 28, 2018Inventors: Shinichi IIDA, Yoshitaka TERAOKA
-
Patent number: 9841323Abstract: A spectroscopic unit and spectroscopic device according to the present invention are provided with a filter that is provided with a plurality of optical filter elements disposed in order from the entrance side to the exit side of light under measurement and has different transmission wavelengths corresponding to entrance positions along a first direction. A first optical filter element from among the plurality of optical filter elements is tilted with respect to a second optical filter element disposed adjacently to the first optical filter element as a result of the first optical filter element being rotated by a prescribed angle with a third direction that is perpendicular to both the first direction and s second direction from the entrance side to the exit side as the axis of rotation thereof or being rotated by a prescribed angle with the first direction as the axis of rotation thereof.Type: GrantFiled: September 17, 2014Date of Patent: December 12, 2017Assignee: KONICA MINOLTA, INC.Inventors: Yoshitaka Teraoka, Katsutoshi Tsurutani, Wataru Yamaguchi
-
Patent number: 9500525Abstract: In a multi-angle colorimeter, a light detecting portion 40 includes a main light receiving window disposed in a predetermined position on a main geometry plane, and first and second auxiliary light receiving windows disposed on a secondary geometry plane, and a main photoelectric conversion element for converting a main component light received by the main light receiving window in a light reflected from a measurement point into an electrical main signal and first and second auxiliary photoelectric conversion elements for converting first and second auxiliary component lights received by the first and second auxiliary light receiving windows in the reflected light respectively into first and second electrical auxiliary signals. A calculating portion corrects the electrical main signal based on the first and second electrical auxiliary signals to obtain color information about the measurement point.Type: GrantFiled: April 9, 2012Date of Patent: November 22, 2016Assignee: Konica Minolta, Inc.Inventors: Yoshitaka Teraoka, Katsutoshi Tsurutani, Yuta Yamanoi
-
Publication number: 20160313183Abstract: A spectroscopic unit and spectroscopic device according to the present invention are provided with a filter that is provided with a plurality of optical filter elements disposed in order from the entrance side to the exit side of light under measurement and has different transmission wavelengths corresponding to entrance positions along a first direction. A first optical filter element from among the plurality of optical filter elements is tilted with respect to a second optical filter element disposed adjacently to the first optical filter element as a result of the first optical filter element being rotated by a prescribed angle with a third direction that is perpendicular to both the first direction and s second direction from the entrance side to the exit side as the axis of rotation thereof or being rotated by a prescribed angle with the first direction as the axis of rotation thereof.Type: ApplicationFiled: September 17, 2014Publication date: October 27, 2016Applicant: KONICA MINOLTA, INC.Inventors: Yoshitaka TERAOKA, Katsutoshi TSURUTANI, Wataru YAMAGUCHI
-
Patent number: 9222835Abstract: A multi-angle colorimeter employs a multi-angle mode and a symmetrical arrangement mode in an optical arrangement. Light detection on both sides of the symmetrical arrangement is performed by a single photodetector unit. The photodetector unit is used on both sides, and thus, the device becomes simpler, without any impact on individual difference in characteristics of multiple photodetector units. Conversely, elements for illumination can be used on both sides. Also in a case where multiple photodetector units are used, the size and cost of the device can be reduced with the use of a photodetector unit having a relatively low wavelength resolution as a photodetector unit to be used on one side. This enables to reduce an attitude error due to relative tilting of a measurement surface while reducing the size and cost of the device.Type: GrantFiled: March 17, 2015Date of Patent: December 29, 2015Assignee: Konica Minolta, Inc.Inventors: Yoshitaka Teraoka, Katsutoshi Tsurutani, Yuta Yamanoi
-
Publication number: 20150192469Abstract: A multi-angle colorimeter employs a multi-angle mode and a symmetrical arrangement mode in an optical arrangement. Light detection on both sides of the symmetrical arrangement is performed by a single photodetector unit. The photodetector unit is used on both sides, and thus, the device becomes simpler, without any impact on individual difference in characteristics of multiple photodetector units. Conversely, elements for illumination can be used on both sides. Also in a case where multiple photodetector units are used, the size and cost of the device can be reduced with the use of a photodetector unit having a relatively low wavelength resolution as a photodetector unit to be used on one side. This enables to reduce an attitude error due to relative tilting of a measurement surface while reducing the size and cost of the device.Type: ApplicationFiled: March 17, 2015Publication date: July 9, 2015Inventors: Yoshitaka TERAOKA, Katsutoshi TSURUTANI, Yuta YAMANOI
-
Patent number: 9001329Abstract: A multi-angle colorimeter employs a multi-angle mode and a symmetrical arrangement mode in an optical arrangement. Light detection on both sides of the symmetrical arrangement is performed by a single photodetector unit. The photodetector unit is used on both sides, and thus, the device becomes simpler, without any impact on individual difference in characteristics of multiple photodetector units. Conversely, elements for illumination can be used on both sides. Also in a case where multiple photodetector units are used, the size and cost of the device can be reduced with the use of a photodetector unit having a relatively low wavelength resolution as a photodetector unit to be used on one side. This enables to reduce an attitude error due to relative tilting of a measurement surface while reducing the size and cost of the device.Type: GrantFiled: April 5, 2012Date of Patent: April 7, 2015Assignee: Konica Minolta, Inc.Inventors: Yoshitaka Teraoka, Katsutoshi Tsurutani, Yuta Yamanoi
-
Publication number: 20140055787Abstract: A multi-angle colorimeter employs a multi-angle mode and a symmetrical arrangement mode in an optical arrangement. Light detection on both sides of the symmetrical arrangement is performed by a single photodetector unit. The photodetector unit is used on both sides, and thus, the device becomes simpler, without any impact on individual difference in characteristics of multiple photodetector units. Conversely, elements for illumination can be used on both sides. Also in a case where multiple photodetector units are used, the size and cost of the device can be reduced with the use of a photodetector unit having a relatively low wavelength resolution as a photodetector unit to be used on one side. This enables to reduce an attitude error due to relative tilting of a measurement surface while reducing the size and cost of the device.Type: ApplicationFiled: April 5, 2012Publication date: February 27, 2014Inventors: Yoshitaka Teraoka, Katsutoshi Tsurutani, Yuta Yamanoi
-
Publication number: 20140049776Abstract: In a multi-angle colorimeter, a light detecting portion 40 includes a main light receiving window disposed in a predetermined position on a main geometry plane, and first and second auxiliary light receiving windows disposed on a secondary geometry plane, and a main photoelectric conversion element for converting a main component light received by the main light receiving window in a light reflected from a measurement point into an electrical main signal and first and second auxiliary photoelectric conversion elements for converting first and second auxiliary component lights received by the first and second auxiliary light receiving windows in the reflected light respectively into first and second electrical auxiliary signals. A calculating portion corrects the electrical main signal based on the first and second electrical auxiliary signals to obtain color information about the measurement point.Type: ApplicationFiled: April 9, 2012Publication date: February 20, 2014Inventors: Yoshitaka Teraoka, Katsutoshi Tsurutani, Yuta Yamanoi