Patents by Inventor Aya OTA
Aya OTA 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: 12013347Abstract: Super continuum light having a continuous spectrum over at least 1100 to 1300 nm is emitted from a pulsed light source, is pulse-stretched by a stretching element such that a relationship between a wavelength and an elapsed time in one pulse is one to one, and is radiated to a product. The light transmitted through the product is received by a light receiver, and output data is input to the determination unit. A quality determination program of the determination unit calculates an absorption spectrum from the output data, quantifies the absorption spectrum by chemometrics, and compares the absorption spectrum with a reference value to determine quality. The product determined to be a defective product is excluded by an exclusion mechanism.Type: GrantFiled: March 25, 2020Date of Patent: June 18, 2024Assignees: USHIO DENKI KABUSHIKI KAISHA, TOWA PHARMACEUTICAL CO., LTD.Inventors: Go Yamada, Aya Ota, Koji Nakayama
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Publication number: 20230375465Abstract: Provided is a high-speed and high-accuracy tablet spectroscopic measurement technology that enables total inspection. A pulsed light irradiation system irradiates a tablet being linearly moved by a movement mechanism with pulsed light in which an elapsed time in each pulse and a wavelength correspond to each other on a one-to-one basis, the output from a light receiver that has received transmission light from the tablet is input to a calculation means via an AD converter and an FPGA as an integration means, and a spectral transmission spectrum is calculated. In a case where the variation in spectral characteristic is measured, grouping is performed for multiple times of pulsed light irradiation performed on different locations, integration is separately performed, spectral transmission spectra are calculated and then compared.Type: ApplicationFiled: August 5, 2021Publication date: November 23, 2023Applicant: Ushio Denki Kabushiki KaishaInventors: Aya OTA, Go YAMADA
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Publication number: 20230333010Abstract: A light source apparatus generates wavelength scanning light. A pulsed light source generates pulsed light including a continuous spectrum. An optical divider spatially divides the broadband pulsed light L into a plurality of n (n?2) beams according to wavelengths. A plurality of n fibers give different delays to the n beams. The coupler multiplexes n beams output from the n fibers. In the light source apparatus, at least a part from an incident end of the optical divider to emission ends of the n fibers has a continuous waveguide structure. A light monitoring device extracts and measures part of light propagating through the continuous waveguide structure.Type: ApplicationFiled: April 13, 2023Publication date: October 19, 2023Applicant: USHIO DENKI KABUSHIKI KAISHAInventors: Takuma YOKOYAMA, Aya OTA
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Patent number: 11675247Abstract: A stretching fiber module that stretches a pulse width of the broadband pulsed light from a broadband pulsed light source such that a time and a wavelength in a pulse correspond to each other on a one-to-one basis includes a multicore fiber and single-core compensation fibers coupled to cores of the multicore fiber. The compensation fibers compensate for a variation in wavelength dispersion characteristic between the cores of the multicore fiber and are temperature-controlled by a temperature adjuster.Type: GrantFiled: March 25, 2020Date of Patent: June 13, 2023Assignee: USHIO DENKI KABUSHIKI KAISHAInventors: Aya Ota, Toshikazu Nagashima
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Publication number: 20220276153Abstract: A nonlinear element provides a nonlinear effect to light output from a pulsed laser source. Remaining light component having the oscillation wavelength of the pulsed laser source is attenuated when the light is split by a dichroic mirror. The divided light is subjected to pulse stretching by a fiber, and is combined by a multiplexing element. The light thus combined is irradiated to a target object S. The light transmitted through the target object S is received by a photoreceiver. The output signal of the photoreceiver is converted by a calculation unit into a spectrum.Type: ApplicationFiled: July 29, 2020Publication date: September 1, 2022Applicant: Ushio Denki Kabushiki KaishaInventors: Junki SAHARA, Aya OTA
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Publication number: 20220268629Abstract: A new spectral measurement technique is provided which enables measurement even if the light to be measured exists for a very short period. In one embodiment, a broadband pulsed light wave whose wavelength shifts temporally and continuously in a pulse interferes with a light wave to be measured. The intensity at each wavelength of the light wave to be measured is obtained using a Fourier transform of the output signal from a detector that has detected the intensity of the wave resulting from the interference. A laser beam from a laser source is converted to a supercontinuum wave by a nonlinear optical element, and a pulse extension element extends pulses of the supercontinuum wave, thus generating the broadband pulsed light wave.Type: ApplicationFiled: March 2, 2022Publication date: August 25, 2022Applicant: Ushio Denki Kabushiki KaishaInventors: Aya OTA, Toshio YOKOTA
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Publication number: 20220178848Abstract: Super continuum light having a continuous spectrum over at least 1100 to 1300 nm is emitted from a pulsed light source, is pulse-stretched by a stretching element such that a relationship between a wavelength and an elapsed time in one pulse is one to one, and is radiated to a product. The light transmitted through the product is received by a light receiver, and output data is input to the determination unit. A quality determination program of the determination unit calculates an absorption spectrum from the output data, quantifies the absorption spectrum by chemometrics, and compares the absorption spectrum with a reference value to determine quality. The product determined to be a defective product is excluded by an exclusion mechanism.Type: ApplicationFiled: March 25, 2020Publication date: June 9, 2022Applicants: Ushio Denki Kabushiki Kaisha, TOWA PHARMACEUTICAL CO., LTD.Inventors: Go YAMADA, Aya OTA, Koji NAKAYAMA
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Publication number: 20220155221Abstract: A stretching fiber module that stretches a pulse width of the broadband pulsed light from a broadband pulsed light source such that a time and a wavelength in a pulse correspond to each other on a one-to-one basis includes a multicore fiber and single-core compensation fibers coupled to cores of the multicore fiber. The compensation fibers compensate for a variation in wavelength dispersion characteristic between the cores of the multicore fiber and are temperature-controlled by a temperature adjuster.Type: ApplicationFiled: March 25, 2020Publication date: May 19, 2022Applicant: Ushio Denki Kabushiki KaishaInventors: Aya OTA, Toshikazu NAGASHIMA
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Patent number: 11300452Abstract: A new spectral measurement technique is provided which enables measurement even if the light to be measured exists for a very short period. In one embodiment, a broadband pulsed light wave whose wavelength shifts temporally and continuously in a pulse interferes with a light wave to be measured. The intensity at each wavelength of the light wave to be measured is obtained using a Fourier transform of the output signal from a detector that has detected the intensity of the wave resulting from the interference. A laser beam from a laser source is converted to a supercontinuum wave by a nonlinear optical element, and a pulse extension element extends pulses of the supercontinuum wave, thus generating the broadband pulsed light wave.Type: GrantFiled: June 6, 2018Date of Patent: April 12, 2022Assignee: Ushio Denki Kabushiki KaishaInventors: Aya Ota, Toshio Yokota
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Patent number: 11079656Abstract: An ultrashort light pulse oscillated from an ultrashort pulse oscillator enters a waveguide (2) via a polarization control element (3). After conversion into a supercontinuum by a nonlinear optical effect, it is compressed by a prism pair compressor (71) as pulse compressor (7), and then emitted. The waveguide (2), which is a nonlinear fiber with normal dispersion in the wavelength range from 850 to 1550, generates the supercontinuum having a spectrum continuous in a wavelength band width of at least 200 nm included in the wavelength range from 850 to 1550 nm. The supercontinuum, which has a peak power within 1 to 100 kW, can be used as excitation light in a multiphoton excitation fluorescence microscope for fluorescence observation of biological samples.Type: GrantFiled: April 4, 2017Date of Patent: August 3, 2021Assignee: Ushio Denki Kabushiki KaishaInventors: Akira Ichihara, Akihiko Nakano, Aiko Sawada, Aya Ota
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Publication number: 20210191229Abstract: An ultrashort light pulse oscillated from an ultrashort pulse oscillator enters a waveguide 2 via a polarization control element 3. After conversion into a supercontinuum by a nonlinear optical effect, it is compressed by a prism pair compressor 71 as pulse compressor 7, and then emitted. The waveguide 2, which is a nonlinear fiber with normal dispersion in the wavelength range from 850 to 1550, generates the supercontinuum having a spectrum continuous in a wavelength band width of at least 200 nm included in the wavelength range from 850 to 1550 nm. The supercontinuum, which has a peak power within 1 to 100 kW, can be used as excitation light in a multiphoton excitation fluorescence microscope for fluorescence observation of biological samples.Type: ApplicationFiled: March 4, 2021Publication date: June 24, 2021Applicant: USHIO DENKI KABUSHIKI KAISHAInventors: Akira ICHIHARA, Akihiko NAKANO, Aiko SAWADA, Aya OTA
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Publication number: 20200166406Abstract: [Object] The object of the invention is to present a new spectral measurement technique enabling a measurement even if light to be measured exists within a very short period. [Means for Solution] A broadband pulsed light wave L1 where wavelength shifts temporally and continuously in a pulse interferes with a light wave L0 to be measured. The intensity at each wavelength of the light wave L0 to measured is obtained by the Fourier transform of the output signal from a detector 5 that has detected the intensity of the wave resultant from the interference. A laser beam L2 from a laser source 1 is converted to a supercontinuum wave L3 by a nonlinear optical element 2. A pulse extension element 3 extends pulses of the supercontinuum wave L3, thus generating the broadband pulsed light wave L1.Type: ApplicationFiled: June 6, 2018Publication date: May 28, 2020Applicant: Ushio Denki Kabushiki KaishaInventors: Aya OTA, Toshio YOKOTA
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Publication number: 20190129278Abstract: An ultrashort light pulse oscillated from an ultrashort pulse oscillator enters a waveguide (2) via a polarization control element (3). After conversion into a supercontinuum by a nonlinear optical effect, it is compressed by a prism pair compressor (71) as pulse compressor (7), and then emitted. The waveguide (2), which is a nonlinear fiber with normal dispersion in the wavelength range from 850 to 1550, generates the supercontinuum having a spectrum continuous in a wavelength band width of at least 200 nm included in the wavelength range from 850 to 1550 nm. The supercontinuum, which has a peak power within 1 to 100 kW, can be used as excitation light in a multiphoton excitation fluorescence microscope for fluorescence observation of biological samples.Type: ApplicationFiled: April 4, 2017Publication date: May 2, 2019Applicants: Ushio Denki Kabushiki Kaisha, RikenInventors: Akira ICHIHARA, Akihiko NAKANO, Aiko SAWADA, Aya OTA