公开(公告)号：US20090109816A1

公开(公告)日：2009-04-30

申请号：US12256365

申请日：2008-10-22

申请人： Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

发明人： Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/00456 ,  G11B7/1267

摘要： According to one embodiment, a calibration section controls an LD driving section so as to carry out test writing on a recording layer of an optical disc using a light pulse having relaxation oscillation, irradiates the test-written area with a reproduction laser beam so as to detect reflected light, and determine write strategy based on the detected result. A recording process is executed on the optical disc by using the light pulse having relaxation oscillation based on the write strategy determined by the calibration section.

摘要翻译： 根据一个实施例，校准部分控制LD驱动部分，以便使用具有弛豫振荡的光脉冲对光盘的记录层进行测试写入，用再现激光束照射测试写入区域，以便 检测反射光，并根据检测结果确定写入策略。 通过使用基于由校准部确定的写入策略的具有弛豫振荡的光脉冲在光盘上执行记录处理。

公开(公告)号：US20090109815A1

公开(公告)日：2009-04-30

申请号：US12260920

申请日：2008-10-29

申请人： Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

发明人： Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/00456 ,  G11B7/1267

摘要： According to one embodiment, an optical disc device includes a light source portion which applies laser light to an optical disc, a drive portion which supplies a drive current to the light source portion so as to cause the light source portion to apply laser light of light pulses having relaxation oscillation, and a controller which controls the drive portion to supply a drive current so as to cause the light source portion to emit laser light of (n−1)×N (N is an integral number) light pulses having relaxation oscillation with respect to a mark with recording mark length nT (n: integral number, T: channel clock) to be recorded on the optical disc.

摘要翻译： 根据一个实施例，光盘装置包括向光盘施加激光的光源部分，向光源部分提供驱动电流以使光源部分施加光的激光的驱动部分 具有弛豫振荡的脉冲和控制驱动部分提供驱动电流以使光源部分发出具有弛豫振荡的（n-1）×N（N为整数）光脉冲的激光的控制器， 相对于要记录在光盘上的具有记录标记长度nT（n：整数，T：通道时钟）的标记。

公开(公告)号：US08077586B2

公开(公告)日：2011-12-13

申请号：US12257213

申请日：2008-10-23

申请人： Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

发明人： Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/127 ,  G11B7/0045 ,  G11B7/006

摘要： According to one embodiment, an optical recording head device includes a light source which outputs such a relaxation oscillation optical pulse that a full width at half maximum of a single pulse is 820 ps or less, a driving unit for driving the light source, an objective lens which converges emission light from the light source on a recording layer of a recording medium, and captures reflective light which is reflected by the recording layer of the recording medium, a distribution unit, placed between the light source and the objective lens, for distributing incident light, and a photodetection unit for receiving via the distribution unit the reflective light which is reflected by the recording layer of the recording medium, wherein a resonator length of the light source is 6560 μm or less.

摘要翻译： 根据一个实施例，光记录头装置包括一个光源，其输出这样的弛豫振荡光脉冲，单脉冲的半高全宽为820ps或更小，用于驱动光源的驱动单元， 将来自光源的发射光会聚在记录介质的记录层上并捕获由记录介质的记录层反射的反射光，放置在光源和物镜之间的分配单元，用于分布 以及光检测单元，用于经由分配单元接收由记录介质的记录层反射的反射光，其中光源的谐振器长度为6560μm以下。

公开(公告)号：US20090196138A1

公开(公告)日：2009-08-06

申请号：US12351226

申请日：2009-01-09

申请人： Nobuaki Kaji ,  Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Masahiro Saito

发明人： Nobuaki Kaji ,  Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Masahiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/00456 ,  G11B7/126

摘要： According to one embodiment, in one embodiment of the invention, a laser drive circuit is provided with a first current source, a second drive current source, and a third current source. The control section selectively obtains a plurality of laser light use mode of controlling the from first to third current sources to use pulse laser light accompanying relaxation oscillation, and a complex laser light use mode of using laser light where laser pulses are combined, whose starting end has an abrupt impulse change portion caused by relaxation oscillation and whose intermediate section is a flat portion with a fixed intensity.

摘要翻译： 根据一个实施例，在本发明的一个实施例中，激光驱动电路设置有第一电流源，第二驱动电流源和第三电流源。 控制部选择性地获得多个激光使用模式，其控制从第一至第三电流源使用伴随弛豫振荡的脉冲激光，以及复合激光使用模式，其中使用激光脉冲组合的激光，其起始端 具有由松弛振动引起的突然脉冲变化部分，其中间部分是具有固定强度的平坦部分。

公开(公告)号：US20090141760A1

公开(公告)日：2009-06-04

申请号：US12260824

申请日：2008-10-29

申请人： Masahiro Saito ,  Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Nobuaki Kaji ,  Kazuto Kuroda

发明人： Masahiro Saito ,  Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Nobuaki Kaji ,  Kazuto Kuroda

IPC分类号： H01S3/00

CPC分类号： G11B7/1263

摘要： According to one embodiment, a drive control apparatus of a semiconductor laser includes a driving circuit which drives the semiconductor laser by applying pulses transiting from bias current to peak current to the semiconductor laser as laser driving current that causes relaxation oscillation of emission light intensity of the semiconductor laser, and a control circuit which controls the bias current such that the bias current has a predetermined ratio limiting fluctuation of a leading peak value of the relaxation oscillation occurring for each application of pulses relative to threshold current of the semiconductor laser. The control circuit changes the bias current to maintain the predetermined ratio relative to fluctuation of the threshold current.

摘要翻译： 根据一个实施例，半导体激光器的驱动控制装置包括驱动电路，该驱动电路通过施加从偏置电流流向峰值电流的脉冲来驱动半导体激光器作为激光驱动电流，该激光驱动电流引起半导体激光器的发射光强度的弛豫振荡 半导体激光器和控制偏置电流的控制电路，使得偏置电流相对于半导体激光器的阈值电流具有针对每次施加脉冲而产生的弛豫振荡的引导峰值的预定比例限制波动。 控制电路改变偏置电流以相对于阈值电流的波动保持预定的比率。

公开(公告)号：US20090109809A1

公开(公告)日：2009-04-30

申请号：US12258359

申请日：2008-10-24

申请人： Kazuto Kuroda ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Nobuaki Kaji ,  Takashi Usui ,  Masahiro Saito

发明人： Kazuto Kuroda ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Nobuaki Kaji ,  Takashi Usui ,  Masahiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/1263 ,  G11B7/00456

摘要： According to one embodiment, a laser drive circuit includes a photodetector which receives part of laser light emitted from a laser element to a recording medium independently of reflection laser light reflected by the recording medium, and outputs an output corresponding to the strength thereof, an integration circuit which integrates the output from the photodetector for a predetermined time, and a setting circuit which sets the intensity of a laser drive current supplied to the laser element on the basis of the output from the integration circuit.

摘要翻译： 根据一个实施例，激光驱动电路包括光电检测器，其独立于由记录介质反射的反射激光，将从激光元件发射的激光的一部分接收到记录介质，并且输出与其强度对应的输出， 电路，其将来自光电检测器的输出积分预定时间;以及设置电路，其根据积分电路的输出设定提供给激光元件的激光驱动电流的强度。

公开(公告)号：US20090109808A1

公开(公告)日：2009-04-30

申请号：US12208658

申请日：2008-09-11

申请人： Nobuaki Kaji ,  Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yasu ,  Chosaku Noda ,  Kazuto Kuroda ,  Masahiro Saito

发明人： Nobuaki Kaji ,  Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yasu ,  Chosaku Noda ,  Kazuto Kuroda ,  Masahiro Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/126 ,  H01S5/0428

摘要： According to one embodiment, a laser drive circuit which supplies a drive current to a laser element which outputs light at a predetermined wavelength, and a laser control circuit which supplies a predetermined timing pulse for generation of relaxation oscillation in a laser drive current supplied to the laser drive circuit, the laser control circuit supplying a laser drive current higher than a threshold value which is supplied from the laser drive circuit to the laser element to enable laser light to be output from the laser element, the laser control circuit setting the laser drive current to a level lower than the threshold value on the basis of the timing pulse.

摘要翻译： 根据一个实施例，提供驱动电流到激光元件的激光驱动电路，激光元件输出预定波长的光;以及激光控制电路，其提供预定的定时脉冲，以产生提供给 激光驱动电路，激光控制电路提供高于从激光驱动电路提供给激光元件的阈值的激光驱动电流，以使激光能够从激光元件输出，激光控制电路设置激光驱动 基于定时脉冲将电流电流降至低于阈值的电平。

公开(公告)号：US20080159101A1

公开(公告)日：2008-07-03

申请号：US11840716

申请日：2007-08-17

申请人： Masahiro Saito ,  Kazuto Kuroda ,  Takashi Usui

发明人： Masahiro Saito ,  Kazuto Kuroda ,  Takashi Usui

IPC分类号： G11B7/00

CPC分类号： G11B7/093 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/0956 ,  G11B11/10576

摘要： Disclosed is an optical disk device including: an objective lens unit having an objective lens and a lens holder; an elastic supporting member supporting displaceably the objective lens unit on a body of an optical head; first and second drive sections applying respectively driving forces to first and second driven positions on the objective lens unit opposed across a position of a center of mass of the objective lens unit in a direction orthogonal to an optical axis of the objective lens; and a driving force adjustment section adjusting allocation of the driving forces respectively applied to the first and second driven positions so that a possible influence of a displacement force in a tilt direction on a displacement force in a focusing direction at the position of the center of mass when the displacement forces act on the objective lens unit is avoided.

摘要翻译： 公开了一种光盘装置，包括：具有物镜和透镜保持器的物镜单元; 弹性支撑构件，其将所述物镜单元可移动地支撑在光学头的主体上; 第一驱动部和第二驱动部将与物镜的质心的位置对置的物镜的第一和第二驱动位置分别施加到与物镜的光轴正交的方向上的驱动力; 以及驱动力调节部，调整分别施加到第一和第二被驱动位置的驱动力的分配，使得倾斜方向上的位移力对聚焦方向上的位移力在质心位置的可能影响 当避免了作用在物镜单元上的位移力时。

公开(公告)号：US09329087B2

公开(公告)日：2016-05-03

申请号：US14374413

申请日：2012-07-11

申请人： Masahiro Saito

发明人： Masahiro Saito

IPC分类号： G01J5/34 ,  G01J5/04 ,  G01J5/08

CPC分类号： G01J5/04 ,  G01J5/089 ,  G01J5/34

摘要： A pyroelectric-type infrared sensor is provided with: a sensor element; a shield case for covering the sensor element; an infrared transmission filter; an output circuit, which performs impedance conversion to output signals of the sensor element and outputs the signals; and at least one reflecting film. In the pyroelectric-type infrared sensor, the at least one reflecting film, which reflects infrared, is provided between the infrared transmission filter attached to the shield case and surface electrodes, and the infrared transmission filter is disposed extremely close to the surface electrodes.

摘要翻译： 热电型红外线传感器设置有：传感器元件; 用于覆盖传感器元件的屏蔽壳; 红外线传输滤波器; 输出电路，其执行阻抗转换以输出所述传感器元件的信号并输出​​所述信号; 和至少一个反射膜。 在热电型红外线传感器中，在安装在屏蔽壳体上的红外线透射滤光片与表面电极之间设置反射红外线的至少一个反射膜，红外线透过滤光片非常接近表面电极。

公开(公告)号：US20140248478A1

公开(公告)日：2014-09-04

申请号：US14352850

申请日：2011-10-26

申请人： Masahiro Saito ,  Teppei Itamoto

发明人： Masahiro Saito ,  Teppei Itamoto

IPC分类号： B29C45/14

CPC分类号： B29C45/14811 ,  B29K2995/0026 ,  B29K2995/0031 ,  B29K2995/007 ,  C08J7/042 ,  C08J7/045 ,  C08J2475/16 ,  C08J2483/02 ,  Y10T428/24967 ,  Y10T428/249974

摘要： The transparent resin substrate has a light-transmitting thermoplastic resin underlying sheet 1 and a hard coating formed on one surface of the underlying sheet, wherein the hard coating includes a resin component obtained by curing an urethane acrylate that contains a tri-functional or less functional urethane acrylate and a tetra-functional or more functional urethane acrylate; a silane coupling agent or a hydrolyzed product thereof, a silica sol having a grain size of 5 to 500 nm and a refractive index in a range of 1.44 to 1.5; and a metal chelate compound. A low refractive index layer is formed on the hard coating, the low refractive index layer includes a low refractive index hollow silica sol having a grain size of 10 to 150 nm and a refractive index of not more than 1.44, the silane coupling agent or the hydrolyzed product thereof, and a metal chelate compound.

摘要翻译： 所述透明树脂基板具有在所述基板1的下方的透光性热塑性树脂和形成在所述下层片材的一个表面上的硬涂层，其中，所述硬质被膜包含通过固化含有三官能以上官能团的氨基甲酸酯丙烯酸酯而得到的树脂成分 氨基甲酸酯丙烯酸酯和四官能或更多官能的聚氨酯丙烯酸酯; 硅烷偶联剂或其水解产物，粒径为5〜500nm，折射率在1.44〜1.5的硅溶胶; 和金属螯合物。 在硬涂层上形成低折射率层，低折射率层包括粒径为10〜150nm，折射率不大于1.44的低折射率中空硅溶胶，硅烷偶联剂或 水解产物和金属螯合物。