Patents by Inventor Yoshitaka TSUCHIDA
Yoshitaka TSUCHIDA 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: 11293749Abstract: Reflected light from the measurement object is received by a plurality of pixel columns arranged in an X2 direction in a light receiving unit 121, and a plurality of light receiving amount distributions is output. One or a plurality of peak candidate positions of light receiving amounts in a Z2 direction is detected by a peak detection unit 1 for each pixel column based on the plurality of light receiving amount distributions. A peak position to be adopted to a profile is selected from the peak candidate positions detected for each pixel column based on a relative positional relationship with a peak position of another pixel column adjacent to the pixel column, and profile data indicating the profile is generated by the profile generation unit 3 based on the selected peak position.Type: GrantFiled: August 4, 2020Date of Patent: April 5, 2022Assignee: KEYENCE CORPORATIONInventor: Yoshitaka Tsuchida
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Patent number: 10921114Abstract: A light source irradiates the measuring object with slit light having a width in an X direction. An image sensor receives reflected light from the measuring object, has a plurality of pixels two-dimensionally arranged in a U direction corresponding to the X direction and a V direction corresponding to a Z direction, and outputs a light receiving amount of the reflected light. A detecting unit detects a position of a pixel in the V direction. A generating unit generates a profile of the X-Z cross section from each position of the plurality of pixel rows in the U direction and the peak position in the V direction. A resolution in the V direction of the image sensor is lower than a resolution in the U direction of the image sensor.Type: GrantFiled: March 19, 2020Date of Patent: February 16, 2021Assignee: KEYENCE CORPORATIONInventors: Akira Fuyuno, Yoshitaka Tsuchida
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Publication number: 20200363191Abstract: Reflected light from the measurement object is received by a plurality of pixel columns arranged in an X2 direction in a light receiving unit 121, and a plurality of light receiving amount distributions is output. One or a plurality of peak candidate positions of light receiving amounts in a Z2 direction is detected by a peak detection unit 1 for each pixel column based on the plurality of light receiving amount distributions. A peak position to be adopted to a profile is selected from the peak candidate positions detected for each pixel column based on a relative positional relationship with a peak position of another pixel column adjacent to the pixel column, and profile data indicating the profile is generated by the profile generation unit 3 based on the selected peak position.Type: ApplicationFiled: August 4, 2020Publication date: November 19, 2020Applicant: Keyence CorporationInventor: Yoshitaka TSUCHIDA
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Publication number: 20200340799Abstract: A light source irradiates the measuring object with slit light having a width in an X direction. An image sensor receives reflected light from the measuring object, has a plurality of pixels two-dimensionally arranged in a U direction corresponding to the X direction and a V direction corresponding to a Z direction, and outputs a light receiving amount of the reflected light. A detecting unit detects a position of a pixel in the V direction. A generating unit generates a profile of the X-Z cross section from each position of the plurality of pixel rows in the U direction and the peak position in the V direction. A resolution in the V direction of the image sensor is lower than a resolution in the U direction of the image sensor.Type: ApplicationFiled: March 19, 2020Publication date: October 29, 2020Applicant: Keyence CorporationInventors: Akira FUYUNO, Yoshitaka TSUCHIDA
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Patent number: 10767976Abstract: Reflected light from the measurement object is received by a plurality of pixel columns arranged in an X2 direction in a light receiving unit 121, and a plurality of light receiving amount distributions is output. One or a plurality of peak candidate positions of light receiving amounts in a Z2 direction is detected by a peak detection unit 1 for each pixel column based on the plurality of light receiving amount distributions. A peak position to be adopted to a profile is selected from the peak candidate positions detected for each pixel column based on a relative positional relationship with a peak position of another pixel column adjacent to the pixel column, and profile data indicating the profile is generated by the profile generation unit 3 based on the selected peak position.Type: GrantFiled: July 16, 2019Date of Patent: September 8, 2020Assignee: KEYENCE CORPORATIONInventor: Yoshitaka Tsuchida
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Patent number: 10746536Abstract: There is provided an optical displacement meter capable of accurately measuring a profile of a measurement object even when multiple reflections are caused. At the time of setting, reference data indicating a reference profile of a measurement object is registered by a registration unit, and a mask region is set to the reference data by a setting unit. At the time of measurement, reflected light from the measurement object is received by a light receiving unit, and a peak in an output light receiving amount distribution is detected by a peak detection unit. Temporary profile data of the measurement object is generated by a profile generation unit based on a position of the detected peak. A position of the mask region for the temporary profile is corrected by a correction unit.Type: GrantFiled: July 16, 2019Date of Patent: August 18, 2020Assignee: Keyence CorporationInventor: Yoshitaka Tsuchida
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Publication number: 20200049487Abstract: Reflected light from the measurement object is received by a plurality of pixel columns arranged in an X2 direction in a light receiving unit 121, and a plurality of light receiving amount distributions is output. One or a plurality of peak candidate positions of light receiving amounts in a Z2 direction is detected by a peak detection unit 1 for each pixel column based on the plurality of light receiving amount distributions. A peak position to be adopted to a profile is selected from the peak candidate positions detected for each pixel column based on a relative positional relationship with a peak position of another pixel column adjacent to the pixel column, and profile data indicating the profile is generated by the profile generation unit 3 based on the selected peak position.Type: ApplicationFiled: July 16, 2019Publication date: February 13, 2020Applicant: Keyence CorporationInventor: Yoshitaka TSUCHIDA
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Publication number: 20200049490Abstract: There is provided an optical displacement meter capable of accurately measuring a profile of a measurement object even when multiple reflections are caused. At the time of setting, reference data indicating a reference profile of a measurement object is registered by a registration unit 1, and a mask region is set to the reference data by a setting unit 2. At the time of measurement, reflected light from the measurement object is received by a light receiving unit 121, and a peak in an output light receiving amount distribution is detected by a peak detection unit 3. Temporary profile data of the measurement object is generated by a profile generation unit 4 based on a position of the detected peak. A position of the mask region for the temporary profile is corrected by a correction unit 5.Type: ApplicationFiled: July 16, 2019Publication date: February 13, 2020Applicant: Keyence CorporationInventor: Yoshitaka TSUCHIDA