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公开(公告)号：US20240210275A1
公开(公告)日：2024-06-27
申请号：US18286857
申请日：2022-03-14
发明人： Koyo WATANABE , Hisanari TAKAHASHI , Takashi INOUE
IPC分类号： G01M11/02
CPC分类号： G01M11/0285
摘要： A dispersion measurement device includes a pulse forming unit, an optical detection unit, and an arithmetic operation unit. The pulse forming unit includes an SLM that presents a phase pattern, and forms an optical pulse train from the first optical pulse, the optical pulse train including a plurality of second optical pulses having a time difference from each other and having center wavelengths different from each other. The optical detection unit detects a temporal waveform of the optical pulse train. An optical component is arranged on an optical path between the pulse forming unit and the optical detection unit. The arithmetic operation unit estimates a wavelength dispersion amount of the optical component based on a feature amount of the temporal waveform. The phase pattern gives a group delay dispersion having a sign opposite to the group delay dispersion of the optical component to the first optical pulse.
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2.发明公开公开(公告)号：US20230384624A1
公开(公告)日：2023-11-30
申请号：US18229909
申请日：2023-08-03
发明人： Koyo WATANABE , Takashi INOUE
CPC分类号： G02F1/0121 , G06F17/148 , G02F2201/305
摘要： An iterative Fourier transform unit of a modulation pattern calculation apparatus performs a Fourier transform on a waveform function including an intensity spectrum function and a phase spectrum function, performs a replacement of a temporal intensity waveform function based on a desired waveform after the Fourier transform, and then performs an inverse Fourier transform. The iterative Fourier transform unit performs the replacement using a result of multiplying a function representing the desired waveform by a coefficient. The coefficient has a value with which a difference between the function after the multiplication of the coefficient and the temporal intensity waveform function after the Fourier transform is smaller than a difference before the multiplication, and a ratio of the difference is smaller when an intensity is higher at each time of the function before the multiplication.
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公开(公告)号：US20220107221A1
公开(公告)日：2022-04-07
申请号：US17488493
申请日：2021-09-29
摘要： A dispersion measurement apparatus includes a pulse forming unit, a correlation optical system, a beam splitter, an operation unit, an imaging unit, a spatial filter unit, and a photodetector. The pulse forming unit forms a light pulse train including light pulses having time differences and different center wavelengths. The beam splitter branches the light pulse train passed through a measurement object. The imaging unit disperses one light pulse train and images each light pulse. The spatial filter unit extracts light of a partial region of the other light pulse train. The correlation optical system outputs correlation light including a cross-correlation or an autocorrelation of the extracted light. The photodetector detects a temporal waveform of the correlation light. The operation unit estimates a wavelength dispersion amount in the measurement object based on a feature value of the temporal waveform.
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4.发明申请公开(公告)号：US20190258206A1
公开(公告)日：2019-08-22
申请号：US16276767
申请日：2019-02-15
发明人： Koji TAKAHASHI , Koyo WATANABE , Takashi INOUE
IPC分类号： G03H1/22
摘要： An intensity spectrum designing unit of a data generating device includes an initial value setting unit that sets a plurality of objects of a first generation of an intensity spectrum function A(ω) and a phase spectrum function Ψ(ω), an evaluation value calculating unit that calculates an evaluation value for each of a plurality of objects of an n-th generation, an object selecting unit that selects two or more objects used for generating a plurality of objects of an (n+1)-th generation among objects of the n-th generation on the basis of superiority of the evaluation value, and a next-generation generating unit that generates a plurality of objects of the (n+1)-th generation on the basis of the selected two or more objects. The evaluation value calculating unit, the object selecting unit, and the next-generation generating unit repeat processes while 1 is added to n until a predetermined condition is satisfied.
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5.发明申请APPARATUS HAVING SPATIAL LIGHT MODULATOR AND CONVERTING UNIT CONVERTING INPUT VALUE TO CONTROL VALUE TO CONTROL SPATIAL LIGHT MODULATOR 审中-公开具有空间光调制器的装置和转换单元转换控制值以控制空间光调制器公开(公告)号：US20160063940A1
公开(公告)日：2016-03-03
申请号：US14885718
申请日：2015-10-16
CPC分类号： G09G3/3648 , G01M11/0257 , G01M11/0271 , G02F1/13306 , G02F1/136277 , G02F2001/136254 , G02F2001/215 , G02F2203/12 , G02F2203/50 , G02F2203/69 , G09G3/3611 , G09G5/10 , G09G2300/0491 , G09G2300/08 , G09G2320/02 , G09G2320/0693
摘要： 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.
摘要翻译： 在用于调制光的装置中，空间光调制器包括多个像素并且被配置为响应于每个像素的驱动电压来调制输入光。 输入值设置单元被配置为设置每个像素的输入值。 输入值为数字值，数字值的整个灰度级为“N”，“N”为自然数。 A转换单元被配置为将输入值转换为控制值。 控制值为数字值，控制值的全部灰度级为“M”，“M”为大于“N”的自然数。 驱动单元被配置为将控制值转换为电压值，并且响应于对应于电压值的驱动电压驱动每个像素。
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公开(公告)号：US20150309472A1
公开(公告)日：2015-10-29
申请号：US14441270
申请日：2013-11-07
发明人： Yuu TAKIGUCHI , Takashi INOUE
CPC分类号： G03H1/0841 , G02B21/06 , G02B26/06 , G02B27/0927 , G02B27/0944 , G03H1/0005 , G03H1/0808 , G03H1/2294 , G03H2001/005 , G03H2001/0094 , G03H2001/085 , G03H2001/221 , G03H2210/20 , G03H2225/32 , G03H2225/52
摘要： A phase distribution is calculated such that modulated light has a predetermined intensity distribution on a target plane and displayed on a phase modulation plane, readout light enters the phase modulation plane so as to generate the modulated light. When calculating the phase distribution, a region on the phase modulation plane is divided into N regions A1 . . . AN, with sizes set such that integration values of an intensity distribution in the regions are equal to each other. Further, a region on the target plane is divided into N regions B1 . . . BN, with sizes set such that integration values of an intensity distribution in the regions are equal to each other. The phase distribution is calculated by obtaining an optical path length from the region An to the region Bn, and determining the phase of the region An based on the optical path length.
摘要翻译： 计算相位分布，使得调制光在目标平面上具有预定的强度分布并显示在相位调制平面上，读出光进入相位调制平面以产生调制光。 当计算相位分布时，相位调制平面上的区域被分成N个区域A1。 。 。 AN，其尺寸设置为使得区域中的强度分布的积分值彼此相等。 此外，目标平面上的区域被划分成N个区域B1。 。 。 BN，其尺寸设定为使得区域中的强度分布的积分值彼此相等。 通过从区域An到区域Bn获得光路长度，并且基于光程长度确定区域An的相位来计算相位分布。
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7.发明申请公开(公告)号：US20130286453A1
公开(公告)日：2013-10-31
申请号：US13918225
申请日：2013-06-14
发明人： Yuu TAKIGUCHI , Naoya MATSUMOTO , Norihiro FUKUCHI , Takashi INOUE , Tamiki TAKEMORI , Naohisa MUKOZAKA
IPC分类号： H01S3/00
CPC分类号： H01S3/0085 , B23K26/06 , B23K26/352 , G02B3/08 , G02B5/32 , G02B13/22 , G03H1/0005 , G03H1/08 , G03H1/0808 , G03H1/2294 , G03H2001/0094 , G03H2225/32
摘要： 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.
摘要翻译： 一种激光加工装置，包括激光光源，相位调制型空间光调制器，驱动单元，控制单元和成像光学系统。 包括在驱动单元中的存储单元存储对应于多个基本处理模式的多个基本全息图和对应于菲涅尔透镜图案的聚焦全息图。 控制单元平行布置从存储在存储单元中的多个基本全息图中选择的两个或多个基本全息图，与聚焦全息图重叠，每个基本全息图平行布置以形成整个全息图，并将形成的全息图呈现为 空间光调制器。
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公开(公告)号：US20130068742A1
公开(公告)日：2013-03-21
申请号：US13678006
申请日：2012-11-15
IPC分类号： B23K26/00
CPC分类号： B23K26/00 , B23K26/06 , B23K26/0624 , B23K26/064 , B23K26/0661 , B23K26/067 , B23K26/355 , G03H1/2294 , G03H2001/0094 , G03H2225/32
摘要： A laser machining device 1 comprises 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.
摘要翻译： 激光加工装置1包括激光源10，空间光调制器20，控制器22，会聚光学系统30和屏蔽构件40.相位调制空间光调制器20输入从激光器输出的激光束 光源10显示调制在二维排列的多个像素中的每一个处的激光束的相位的全息图，并输出相位调制的激光束。 控制器22使空间光调制器20依次显示多个全息图，使会聚光学系统30将从空间光调制器20输出的激光束会聚在具有固定数量的M的会聚位置，选择性地将N个收敛位置放出 的M个会聚位置进入加工区域91，并且对要加工的物体进行加工90。
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公开(公告)号：US20240361664A1
公开(公告)日：2024-10-31
申请号：US18637686
申请日：2024-04-17
发明人： Koyo WATANABE , Takashi INOUE
IPC分类号： G02F1/35
CPC分类号： G02F1/353 , G02F1/3501 , G02F2203/12 , G02F2203/26 , G02F2203/54
摘要： An optical pulse train generation device includes a storage unit and a characteristic setting unit. The storage unit stores a plurality of phase patterns in advance. The plurality of phase patterns are phase patterns for forming, from a first optical pulse, an optical pulse train including a plurality of second optical pulses having time differences therebetween and having different center wavelengths. Between the plurality of phase patterns, one or both of a first characteristic regarding the first optical pulse and a second characteristic regarding the optical pulse train are different. The characteristic setting unit sets the first characteristic and the second characteristic in response to the user's input. The storage unit stores the plurality of phase patterns in association with the first characteristic and the second characteristic. A spatial light modulator displays a phase pattern corresponding to the first characteristic and the second characteristic set by the characteristic setting unit.
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公开(公告)号：US20240110833A1
公开(公告)日：2024-04-04
申请号：US18530698
申请日：2023-12-06
CPC分类号： G01J3/4412 , G01J3/0208 , G01J3/0229 , G01J3/2823
摘要： A dispersion measurement apparatus includes a pulse forming unit, a correlation optical system, a beam splitter, an operation unit, an imaging unit, a spatial filter unit, and a photodetector. The pulse forming unit forms a light pulse train including light pulses having time differences and different center wavelengths. The beam splitter branches the light pulse train passed through a measurement object. The imaging unit disperses one light pulse train and images each light pulse. The spatial filter unit extracts light of a partial region of the other light pulse train. The correlation optical system outputs correlation light including a cross-correlation or an autocorrelation of the extracted light. The photodetector detects a temporal waveform of the correlation light. The operation unit estimates a wavelength dispersion amount in the measurement object based on a feature value of the temporal waveform.
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