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1. 发明授权

US08730483B2 Interferometric measurement of displacement in axial direction of a grating 有权
标题翻译：光栅轴向位移的干涉测量
公开(公告)号：US08730483B2
公开(公告)日：2014-05-20
申请号：US13438615
申请日：2012-04-03
申请人： Masato Ikeda , Katsuhiro Oyama
发明人： Masato Ikeda , Katsuhiro Oyama
IPC分类号： G01B9/02
CPC分类号： B62M6/50 , G01D5/38
摘要： A displacement measurement device includes a first diffraction grating that generates first diffraction light of a prescribed order; a second diffraction grating movable relative to the first diffraction grating, the second diffraction grating dividing the zeroth-order light that has passed through the first diffraction grating into zeroth-order light and a second diffraction light of a prescribed order; and a first optical sensor that detects interfering light beams formed by the first diffraction light from the first diffraction grating and the second diffraction light from the second diffraction grating to determine an amount of a displacement of the second diffraction grating relative to the first diffraction grating.
摘要翻译：位移测量装置包括：第一衍射光栅，其产生规定顺序的第一衍射光; 第二衍射光栅相对于第一衍射光栅可移动，第二衍射光栅将已经通过第一衍射光栅的零级光分割为零级光和具有规定次数的第二衍射光; 以及第一光学传感器，其检测由来自第一衍射光栅的第一衍射光和来自第二衍射光栅的第二衍射光形成的干涉光束，以确定第二衍射光栅相对于第一衍射光栅的位移量。

2. 发明授权

US08922785B2 Method and apparatus for measuring displacement 有权
标题翻译：测量位移的方法和装置
公开(公告)号：US08922785B2
公开(公告)日：2014-12-30
申请号：US13619103
申请日：2012-09-14
申请人： Katsuhiro Oyama , Masato Ikeda
发明人： Katsuhiro Oyama , Masato Ikeda
IPC分类号： G01B11/02 , G01B11/00 , B60T17/22 , B62K23/06 , B62M6/50 , B60L3/00 , B60L7/12 , B60L7/24 , B60L11/00
CPC分类号： G01B11/002 , B60L3/0076 , B60L7/12 , B60L7/24 , B60L11/007 , B60L2200/12 , B60T17/221 , B62K23/06 , B62M6/50
摘要： A technique for measuring displacement involves passing parallel laser light from a laser light source through a first diffraction grating to a semi-transparent semi-reflective mirror. A portion of the laser light is reflected as first reversed light, which passes through the first diffraction grating. The remainder of the parallel laser light proceeds to a total reflection mirror and is reflected as second reversed light that passes through the semi-transparent semi-reflective mirror and the first diffraction grating. The amount of refracted light of a predetermined order that is of the first and second reversed light and that results from the first diffraction grating is detected by a first optical sensor, and the amount of displacement is obtained from the interference band or a signal thereof corresponding to the amount of relative motion in the axial direction of the total reflection mirror with respect to the semi-transparent semi-reflective mirror.
摘要翻译：用于测量位移的技术包括将来自激光光源的平行激光通过第一衍射光栅传递到半透明半反射镜。激光的一部分被反射成第一反射光，其通过第一衍射光栅。平行激光的剩余部分进行到全反射镜，并被反射成穿过半透半反射镜和第一衍射光栅的第二反射光。由第一光学传感器检测由第一和第二反射光产生的第一和第二反射光并且由第一衍射光栅产生的预定次数的折射光量，并且从相应的干涉带或其信号获得位移量相对于半透半反射镜在全反射镜的轴向上的相对运动量。

3. 发明申请

US20130010305A1 Method and Apparatus for Measuring Displacement 有权
标题翻译：测量位移的方法和装置
公开(公告)号：US20130010305A1
公开(公告)日：2013-01-10
申请号：US13619103
申请日：2012-09-14
申请人： Katsuhiro Oyama , Masato Ikeda
发明人： Katsuhiro Oyama , Masato Ikeda
IPC分类号： G01B11/02
CPC分类号： G01B11/002 , B60L3/0076 , B60L7/12 , B60L7/24 , B60L11/007 , B60L2200/12 , B60T17/221 , B62K23/06 , B62M6/50
摘要： A technique for measuring displacement involves passing parallel laser light from a laser light source through a first diffraction grating to a semi-transparent semi-reflective mirror. A portion of the laser light is reflected as first reversed light, which passes through the first diffraction grating. The remainder of the parallel laser light proceeds to a total reflection mirror and is reflected as second reversed light that passes through the semi-transparent semi-reflective mirror and the first diffraction grating. The amount of refracted light of a predetermined order that is of the first and second reversed light and that results from the first diffraction grating is detected by a first optical sensor, and the amount of displacement is obtained from the interference band or a signal thereof corresponding to the amount of relative motion in the axial direction of the total reflection mirror with respect to the semi-transparent semi-reflective mirror.
摘要翻译：用于测量位移的技术包括将来自激光光源的平行激光通过第一衍射光栅传递到半透明半反射镜。激光的一部分被反射成第一反射光，其通过第一衍射光栅。平行激光的剩余部分进行到全反射镜，并被反射成穿过半透半反射镜和第一衍射光栅的第二反射光。由第一光学传感器检测由第一和第二反射光产生的第一和第二反射光并且由第一衍射光栅产生的预定次数的折射光量，并且从相应的干涉带或其信号获得位移量相对于半透半反射镜在全反射镜的轴向上的相对运动量。

4. 发明授权

US08483026B2 Optical information recording apparatus and method 有权
标题翻译：光信息记录装置及方法
公开(公告)号：US08483026B2
公开(公告)日：2013-07-09
申请号：US13442333
申请日：2012-04-09
申请人： Fuyuki Miyazawa , Hiroya Kakimoto , Katsuhiro Oyama
发明人： Fuyuki Miyazawa , Hiroya Kakimoto , Katsuhiro Oyama
IPC分类号： G11B7/00 , G11B9/07 , G11B5/09
CPC分类号： G11B7/256 , G11B7/00456
摘要： To ensure a favorable recording characteristic for a write-once recording medium for a bluish-purple laser, an optical information recording apparatus includes ways to write power to form recording marks, a space forming power to form spaces, a pulse width of a cooling pulse and ways to record information onto the optical information recording medium according to the setting of the write power, the setting of the space forming power and the setting of the pulse width of the cooling pulse. At this time, the pulse width of the cooling pulse and a ratio whose numerator is the write power and whose denominator is the space forming power have a preferable region of the recording characteristic, and information is recorded onto the optical recording medium by using values in this range.
摘要翻译：为了确保用于蓝紫色激光的一次写入记录介质的良好的记录特性，光学信息记录装置包括写入功率以形成记录标记的方式，形成空间的空间形成功率，冷却脉冲的脉冲宽度以及根据写入功率的设置，空间形成功率的设置和冷却脉冲的脉冲宽度的设置将信息记录到光学信息记录介质上的方法。此时，冷却脉冲的脉冲宽度和其分子是写入功率并且其分母是空间形成功率的比率具有记录特性的优选区域，并且通过使用数据中的值将信息记录在光学记录介质上这个范围。

5. 发明申请

US20110188360A1 RECORDING METHOD FOR OPTICAL DISK AND OPTICAL DISK RECORDING REPRODUCTION DEVICE 失效
标题翻译：光盘和光盘记录再现装置的记录方法
公开(公告)号：US20110188360A1
公开(公告)日：2011-08-04
申请号：US12676810
申请日：2008-09-08
申请人： Katsuhiro Oyama , Fuyuki Miyazawa , Daizo Yokoyama
发明人： Katsuhiro Oyama , Fuyuki Miyazawa , Daizo Yokoyama
IPC分类号： G11B7/135
CPC分类号： G11B7/1267 , G11B7/1378 , G11B7/13925
摘要： There is proposed an optical disk recording method that can prevent degradation of recording quality due to occurrence of thermal interference, and an optical disk recording reproduction device used in this recording method. The recording method has a step of executing a test record on an output proofing area of the optical disk 150 while a spot diameter of the recording laser beam is varied, and deriving the relationship between the spot diameter and a characteristic value representing recording quality, a step of deriving a permissible range of a variation amount of the spot diameter on the basis of the derived relationship between the spot diameter and the characteristic value representing the recording quality; a step of irradiating a record region of the optical disk with the recording laser beam to detect spherical aberration while executing recording; and a step of executing aberration correction, in case the spherical aberration occurs, such that a variation amount of the spot diameter falls into the derived permissible range.
摘要翻译：提出了一种可以防止由于热干扰的发生导致的记录质量下降的光盘记录方法，以及在该记录方法中使用的光盘记录再现装置。记录方法具有在记录激光束的光斑直径变化的同时在光盘150的输出校样区域上执行测试记录的步骤，并导出光斑直径与表示记录质量的特征值之间的关系，基于导出的光点直径和表示记录质量的特征值之间的关系，导出光斑直径的变化量的允许范围的步骤; 用记录激光束照射光盘的记录区域以在执行记录时检测球面像差的步骤; 以及在出现球面像差的情况下执行像差校正的步骤，使得光点直径的变化量落入导出的允许范围内。

6. 发明申请

US20080062833A1 OPTICAL INFORMATION RECORDING REPRODUCTION DEVICE 失效
标题翻译：光信息记录再现设备
公开(公告)号：US20080062833A1
公开(公告)日：2008-03-13
申请号：US11843556
申请日：2007-08-22
申请人： Katsuhiro Oyama , Mitsuo Sekiguchi , Hiroya Kakimoto , Fuyuki Miyazawa
发明人： Katsuhiro Oyama , Mitsuo Sekiguchi , Hiroya Kakimoto , Fuyuki Miyazawa
IPC分类号： G11B7/00
CPC分类号： G11B7/0945 , G11B7/13925
摘要： An optical information recording reproduction device is disclosed, in which aberration detection is stably performed, so that an excellent record grade can be achieved. An RF signal is subjected to differential operation along a time axis of the signal, the RF signal being obtained from reflected light including primary light situated in the periphery of a primary dark ring enclosing zero-order light in a central portion of a beam spot formed on a pit; pulse signal waveforms are represented in an absolute value form, the pulse signal waveforms being generated in correspondence with front and rear ends of the beam spot on the time axis; the pulse signal waveforms represented in the absolute value form are stored into a storage medium; the stored, two pulse signal waveforms are combined to generate a beam profile of the beam spot formed on an optical recording medium; and a beam spot diameter, spherical aberration, and coma aberration of a record laser beam are adjusted based on the beam profile.
摘要翻译：公开了一种稳定地进行像差检测的光信息记录再现装置，从而可以获得良好的记录等级。 RF信号沿着信号的时间轴进行差分操作，RF信号从包含初级光的反射光的反射光获得，该主光位于形成的光束点的中心部分中的包围零级光的初级暗环的周围在坑里脉冲信号波形以绝对值形式表示，脉冲信号波形是根据时间轴上的光束点的前端和后端产生的; 以绝对值形式表示的脉冲信号波形被存储到存储介质中; 存储的两个脉冲信号波形被组合以产生形成在光学记录介质上的光束的光束分布; 并且基于光束轮廓来调整记录激光束的束斑直径，球面像差和彗形像差。

7. 发明授权

US07755993B2 Optical information recording reproduction device 失效
标题翻译：光信息记录再生装置
公开(公告)号：US07755993B2
公开(公告)日：2010-07-13
申请号：US11843556
申请日：2007-08-22
申请人： Katsuhiro Oyama , Mitsuo Sekiguchi , Hiroya Kakimoto , Fuyuki Miyazawa
发明人： Katsuhiro Oyama , Mitsuo Sekiguchi , Hiroya Kakimoto , Fuyuki Miyazawa
IPC分类号： G11B7/00
CPC分类号： G11B7/0945 , G11B7/13925
摘要： An optical information recording reproduction device is disclosed, in which aberration detection is stably performed, so that an excellent record grade can be achieved. An RF signal is subjected to differential operation along a time axis of the signal, the RF signal being obtained from reflected light including primary light situated in the periphery of a primary dark ring enclosing zero-order light in a central portion of a beam spot formed on a pit; pulse signal waveforms are represented in an absolute value form, the pulse signal waveforms being generated in correspondence with front and rear ends of the beam spot on the time axis; the pulse signal waveforms represented in the absolute value form are stored into a storage medium; the stored, two pulse signal waveforms are combined to generate a beam profile of the beam spot formed on an optical recording medium; and a beam spot diameter, spherical aberration, and coma aberration of a record laser beam are adjusted based on the beam profile.
摘要翻译：公开了一种稳定地进行像差检测的光信息记录再现装置，从而可以获得良好的记录等级。 RF信号沿着信号的时间轴进行差分操作，RF信号从包含初级光的反射光的反射光获得，该主光位于形成的光束点的中心部分中的包围零级光的初级暗环的周围在坑里脉冲信号波形以绝对值形式表示，脉冲信号波形是根据时间轴上的光束点的前端和后端产生的; 以绝对值形式表示的脉冲信号波形被存储到存储介质中; 存储的两个脉冲信号波形被组合以产生形成在光学记录介质上的光束的光束分布; 并且基于光束轮廓来调整记录激光束的束斑直径，球面像差和彗形像差。

8. 发明申请

US20060023581A1 Optical disk recording device and pickup device 审中-公开
标题翻译：光盘记录装置和拾取装置
公开(公告)号：US20060023581A1
公开(公告)日：2006-02-02
申请号：US11173387
申请日：2005-07-01
申请人： Ryuichi Sunagawa , Katsuhiro Oyama , Fuyuki Miyazawa
发明人： Ryuichi Sunagawa , Katsuhiro Oyama , Fuyuki Miyazawa
IPC分类号： G11B7/00
CPC分类号： G11B7/0903 , G11B7/00456 , G11B7/00458 , G11B7/131 , G11B7/1353
摘要： The invention provides an effective method for improving accuracy of recording, tracking, and reproduction in a real-time correction in which correction is performed simultaneously with recording. A beam spot for recording, beam spots for reproduction, and beam spots for tracking are formed by branching a laser beam outputted from a laser diode by using a diffraction grating. In this manner, by providing the beam spots for recording, reproduction, and tracking independently, signals which are subjected to less reproduction degradation are obtained while maintaining tracking accuracy.
摘要翻译：本发明提供了一种在与记录同时执行校正的实时校正中提高记录，跟踪和再现精度的有效方法。通过使用衍射光栅分支从激光二极管输出的激光束，形成用于记录的光束点，用于再现的光束点和用于跟踪的光束点。以这种方式，通过独立地提供用于记录，再现和跟踪的光束点，在保持跟踪精度的同时获得经历较少再现劣化的信号。

9. 发明授权

US08254229B2 Optical information recording apparatus and method 有权
标题翻译：光信息记录装置及方法
公开(公告)号：US08254229B2
公开(公告)日：2012-08-28
申请号：US12746312
申请日：2008-12-11
申请人： Fuyuki Miyazawa , Hiroya Kakimoto , Katsuhiro Oyama
发明人： Fuyuki Miyazawa , Hiroya Kakimoto , Katsuhiro Oyama
IPC分类号： G11B9/07
CPC分类号： G11B7/256 , G11B7/00456
摘要： In order to ensure a favorable recording characteristic for a write-once recording medium whose recording layer is made of an organic dye having an absorption spectrum at a wavelength λ=405 nm, this optical information recording apparatus includes a unit to set a write power to form recording marks, a space forming power to form spaces and a pulse width of a cooling pulse, and a unit to record information onto the recording medium according to the setting. The pulse width of the cooling pulse and a ratio of the space recording power to the write power are determined from a favorable region in a plane whose one coordinate axis represents the ratio and whose other coordinate axis represents the pulse width of the cooling pulse.
摘要翻译：为了确保其记录层由具有波长λ= 405nm的吸收光谱的有机染料制成的一次写入记录介质的良好的记录特性，该光信息记录装置包括将写入功率设置为形成记录标记，形成空间的空间形成功率和冷却脉冲的脉冲宽度，以及根据设置将信息记录到记录介质上的单元。冷却脉冲的脉冲宽度和空间记录功率与写入功率的比率由一个坐标轴表示该比例并且另一个坐标轴表示冷却脉冲的脉冲宽度的平面中的有利区域确定。

10. 发明申请

US20070291599A1 OPTICAL INFORMATION RECORDING REPRODUCTION DEVICE 失效
标题翻译：光信息记录再现设备
公开(公告)号：US20070291599A1
公开(公告)日：2007-12-20
申请号：US11757119
申请日：2007-06-01
申请人： Katsuhiro Oyama , Mitsuo Sekiguchi , Hiroya Kakimoto , Fuyuki Miyazawa
发明人： Katsuhiro Oyama , Mitsuo Sekiguchi , Hiroya Kakimoto , Fuyuki Miyazawa
IPC分类号： G11B7/00
CPC分类号： G11B7/0948 , G11B7/0956 , G11B7/13925
摘要： An optical information recording reproduction device is disclosed which finds the correlation between the ratio of the minimum pit amplitude to the maximum pit amplitude of an RF signal obtained from the light reflected by the pits recorded on an optical disk in a tracking servo mode and spherical aberration in advance, and stores it. In recoding information on the optical disk, the optical information recording reproduction device calculates the ratio of the minimum pit amplitude to the maximum pit amplitude of the RF signal, and compares the calculation to the stored correlation, and feeds back to an aberration correction optical system and a driving mechanical system to correct the aberration into an aplanatic state.
摘要翻译：公开了一种光信息记录再现装置，其发现从由跟踪伺服模式记录在光盘上的凹坑反射的光获得的RF信号的最小凹坑幅度与最大凹坑幅度的比率与球面像差提前存储。在光盘上重新编码信息时，光信息记录再现装置计算出RF信号的最小凹坑幅度与最大凹坑幅度的比率，并且将该计算与所存储的相关性进行比较，并反馈到像差校正光学系统以及用于将像差校正为非均匀状态的驱动机械系统。

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