公开(公告)号：US06741406B2

公开(公告)日：2004-05-25

申请号：US09875695

申请日：2001-06-06

申请人： Kazuya Kitamura ,  Yukio Kurata ,  Tetsuo Iwaki

发明人： Kazuya Kitamura ,  Yukio Kurata ,  Tetsuo Iwaki

IPC分类号： G02B702

CPC分类号： G02B7/021 ,  G02B7/022 ,  G02B7/025 ,  G02B13/18 ,  G11B7/1374 ,  G11B7/22 ,  G11B2007/13727

摘要： An objective lens is made up of a light-source-side lens and a medium-side lens wherein at least either one of rim portions of respective opposing surfaces of the light-source-side lens and the medium-side lens forms a rise-up section projected towards the other lens, the rim portion which forms the rise-up section and the rim portion of the other lens at least partially contact one another, and these two lens are fixed together by an adhesive resin layer formed in a spacing between the respective rim portions. With the foregoing structure, an objective lens made up of a pair of lenses which has high rigidity as a whole and is capable of high speed recording and reproducing by suppressing adverse effects of resonance can be realized.

摘要翻译： 物镜由光源侧透镜和中等侧透镜构成，其中光源侧透镜和中等侧透镜的相对表面的边缘部分中的至少一个形成上升透镜， 向另一个透镜突出的凸缘部分，形成上升部分的边缘部分和另一透镜的边缘部分至少部分地彼此接触，并且这两个透镜通过以间隔之间的间隔形成的粘合树脂层固定在一起 相应的边缘部分。 利用上述结构，可以实现由一对透镜组成的物镜，该透镜具有高刚性并且能通过抑制共振的不利影响而进行高速记录和再现。

公开(公告)号：US06507559B1

公开(公告)日：2003-01-14

申请号：US09568672

申请日：2000-05-11

申请人： Tetsuo Iwaki

发明人： Tetsuo Iwaki

IPC分类号： G11B724

CPC分类号： G11B7/24047 ,  G11B7/24018 ,  G11B7/24038 ,  G11B7/2534 ,  G11B7/2542 ,  G11B7/2548 ,  G11B7/256 ,  G11B7/257 ,  G11B7/2585 ,  G11B7/26

摘要： An optical recording medium is an optical disk formed by bonding a substrate to a light transparent cover layer smaller in thickness than the substrate, and the optical disk includes one or more recording layer between the substrate and the light transparent cover layer. The light transparent cover layer is smaller in diameter than the substrate. Further, it is desirable that an outer edge of the substrate be higher than a between-edge part of the substrate. With this arrangement, a bonding surface of the substrate and the light transparent cover layer is not exposed out of an outer curved surface. Accordingly, it is possible to protect the bonding surface between the outer edge and the inner edge so as to increase strength against exfoliation of the light transparent cover layer.

摘要翻译： 光记录介质是通过将基板粘合到比基板更薄的薄透明覆盖层形成的光盘，并且光盘在基板和透光覆盖层之间包括一个或多个记录层。 光透明覆盖层的直径小于基底。 此外，希望基板的外边缘高于基板的边缘部分之间。 通过这样的布置，基板和透光性覆盖层的接合面不会从外侧弯曲面露出。 因此，可以保护外边缘和内边缘之间的接合表面，从而提高抗光透过覆盖层的剥离强度。

公开(公告)号：US6108036A

公开(公告)日：2000-08-22

申请号：US823976

申请日：1997-03-25

申请人： Toshiaki Harada ,  Tetsuo Iwaki ,  Eiji Yamada ,  Tohru Okuda

发明人： Toshiaki Harada ,  Tetsuo Iwaki ,  Eiji Yamada ,  Tohru Okuda

IPC分类号： G02B27/46 ,  H04N5/225 ,  H04N5/232 ,  H04N5/243 ,  H04N5/335 ,  H04N5/349 ,  H04N5/357 ,  H04N5/378

CPC分类号： H04N3/1587 ,  H04N5/2254 ,  H04N5/2259

摘要： A single imaging apparatus is adapted to pick up both a motion image and a still image. In an imaging apparatus 1, image light from an object is separated into multiple monochromatic image light components by an optical system 3 and then imaged by an imaging means 4 for generation of an original image signal. The imaging apparatus 1 switches an imaging mode depending upon an output mode. The optical system 3 switches the sate of a variable spatial filter 18 depending upon an imaging mode thereby changing an effect for limiting the spatial frequency. In an output mode for motion images, an interpolative synthesizer circuit 7 generates the output image signal from a single original image signal. In an output mode for still image, an image shift mechanism 19 parallely shifts the optical axis of the incoming image light while the imaging means captures the original image light multiple times so that an output image is produced from these original image signals. An amount of attenuation of the filter 18 in the output mode for motion images is greater than that for an equivalent spatial frequency component in the output mode for still image.

摘要翻译： 单个成像装置适于拾取运动图像和静止图像。 在成像装置1中，来自物体的图像光被光学系统3分离成多个单色图像光分量，然后由成像装置4成像以产生原始图像信号。 成像装置1根据输出模式切换成像模式。 光学系统3根据成像模式切换可变空间滤波器18的状态，由此改变用于限制空间频率的效果。 在运动图像的输出模式中，内插合成器电路7从单个原始图像信号生成输出图像信号。 在静止图像的输出模式中，图像偏移机构19平行地移动入射图像光的光轴，同时成像装置多次捕获原始图像光，从而从这些原始图像信号产生输出图像。 用于运动图像的输出模式中的滤波器18的衰减量大于用于静止图像的输出模式中的等效空间频率分量的衰减量。

公开(公告)号：US4293720A

公开(公告)日：1981-10-06

申请号：US146080

申请日：1980-05-02

申请人： Tetsuo Iwaki ,  Yukio Takahashi ,  Shuji Moriuchi ,  Hisamitsu Kaneko

发明人： Tetsuo Iwaki ,  Yukio Takahashi ,  Shuji Moriuchi ,  Hisamitsu Kaneko

IPC分类号： B01J27/232 ,  B01J23/78 ,  C07B61/00 ,  C07C39/00 ,  C07C67/00 ,  C07C407/00 ,  C07C409/08 ,  C07C409/12 ,  C07C179/035

CPC分类号： B01J23/78 ,  C07C39/00 ,  C07C407/00 ,  C07C409/08 ,  C07C409/12

摘要： Disclosed is a process for the preparation of hydroperoxides comprising liquid-phase oxidizing an aromatic compound having a secondary alkyl group with molecular oxygen in the presence of a basic aqueous solution and a copper compound catalyst, wherein an aqueous solution containing (A) cupric carbonate and (B) an alkali metal carbonate and/or an alkali metal bicarbonate is prepared outside the oxidation system and this aqueous solution is supplied to the oxidation system.According to the process, even under basic conditions, inactivation of the catalyst owing to precipitation is prevented, and the intended aromatic hydroperoxide can be obtained at a high oxidation speed.

摘要翻译： 公开了一种制备氢过氧化物的方法，其包括在碱性水溶液和铜化合物催化剂的存在下，将具有仲烷基的芳族化合物与分子氧进行液相氧化，其中将含有（A）碳酸铜和 （B）在氧化体系的外部制备碱金属碳酸盐和/或碱金属碳酸氢盐，并将该水溶液供给至氧化体系。 根据该方法，即使在碱性条件下，也能够防止由于沉淀引起的催化剂的失活，能够以高的氧化速度得到目的芳香族氢过氧化物。

公开(公告)号：US07218813B2

公开(公告)日：2007-05-15

申请号：US10525437

申请日：2003-08-21

申请人： Yorishige Ishii ,  Tetsuo Iwaki ,  Toshihiro Tamura

发明人： Yorishige Ishii ,  Tetsuo Iwaki ,  Toshihiro Tamura

IPC分类号： G02B6/32 ,  H04J14/02

CPC分类号： G02B6/4202

摘要： An optical communication system has a plastic optical fiber (POF) and an optical communication module. The POF has a spherical end surface, and light emitted from the spherical end surface has an NA of 0.35 or lower. The POF is installed in the module such that a light receiving surface of a light receiving element (PD) is at a distance, d, from an apex of the spherical end surface. The distance, d, is within a range of 0

摘要翻译： 光通信系统具有塑料光纤（POF）和光通信模块。 POF具有球面端面，从球面端射出的光的NA为0.35以下。 POF安装在模块中，使得光接收元件（PD）的光接收表面距离球形端表面的顶点处于距离d。 当PD直径不大于D时，距离d在0

公开(公告)号：US20050031353A1

公开(公告)日：2005-02-10

申请号：US10501186

申请日：2003-04-02

申请人： Yorishige Ishii ,  Toshihiro Tamura ,  Tetsuo Iwaki ,  Yukio Kurata

发明人： Yorishige Ishii ,  Toshihiro Tamura ,  Tetsuo Iwaki ,  Yukio Kurata

IPC分类号： G02B6/42 ,  H04B10/00 ,  H04B10/2507 ,  H04B10/2581 ,  H04B10/12

CPC分类号： H04B10/25

摘要： A position of a first module (12a) with respect to an optical fiber (11) is determined in accordance with a receiving efficiency at the first module (12a) with respect to light emitted from the optical fiber (11). Power of light coupled into the optical fiber (11) from the first module (12a) is set in accordance with a value of a far-end reflectivity on a side of the first module (12a) in the position so as to satisfy a predetermined formula. By giving priority to determining a condition that significantly influences an improvement of an eye opening ratio, it is possible to manufacture an optical communication system at a low cost and with more freedom in manufacturing. Thus provided is a method of manufacturing an optical communication system, the method allowing for manufacturing an optical communication system at a low cost and with more freedom in manufacturing.

摘要翻译： 第一模块（12a）相对于光纤（11）的位置根据第一模块（12a）相对于从光纤（11）发射的光的接收效率来确定。 从第一模块（12a）耦合到光纤（11）中的光的功率根据在第一模块（12a）的一侧上的远端反射率的值被设定为满足预定的 式。 通过优先确定显着影响眼睛开度比的改善的条件，可以以低成本制造光通信系统并且具有更多的制造自由度。 因此，提供了一种制造光通信系统的方法，该方法允许以低成本制造光通信系统并且具有更多的制造自由度。

公开(公告)号：US06438089B1

公开(公告)日：2002-08-20

申请号：US09573626

申请日：2000-05-17

申请人： Kazuya Kitamura ,  Yukio Kurata ,  Tetsuo Iwaki

发明人： Kazuya Kitamura ,  Yukio Kurata ,  Tetsuo Iwaki

IPC分类号： G11B700

CPC分类号： G11B7/1365 ,  G11B7/1374 ,  G11B7/1398 ,  G11B2007/13727

摘要： In an optical pickup device, the numerical aperture (NA) of an objective lens is set at 0.7 or more, and the ellipticity of polarized light of a light beam which is incident upon the objective lens is set to be larger than (1.4×NA)−0.7. According to the structure, an optical pickup device which can prevent deterioration of the jitter and crosstalk characteristics, for example, due to oval deformation of a beam spot can be provided.

摘要翻译： 在光拾取装置中，物镜的数值孔径（NA）设定为0.7以上，入射到物镜的光束的偏振光的椭圆率设定为大于（1.4×NNA） -0.7。 根据该结构，可以提供能够防止例如由于光斑的椭圆形变形引起的抖动和串扰特性的劣化的光学拾取装置。

公开(公告)号：US06388822B1

公开(公告)日：2002-05-14

申请号：US09597652

申请日：2000-06-19

申请人： Kazuya Kitamura ,  Yukio Kurata ,  Tetsuo Iwaki

发明人： Kazuya Kitamura ,  Yukio Kurata ,  Tetsuo Iwaki

IPC分类号： G02B904

CPC分类号： G11B7/1374 ,  G02B1/11 ,  G11B7/13922 ,  G11B7/1398 ,  G11B7/24 ,  G11B2007/13727

摘要： An optical pickup device which includes an objective lens having a numerical aperture of 0.7 or more collects light emitted from a light source and irradiates an optical recording medium. The objective lens and an antireflection film formed thereon are set so that the intensity of light incident on the outermost rim of the objective lens is 45% or more and 80% or less of the intensity of incident light from the light source to the center of the objective lens. According to the configuration, it is possible to provide an optical pickup device including a high NA objective lens which can suppress a reduction in the light amount at the lens rim.

摘要翻译： 包括数值孔径为0.7以上的物镜的光学拾取装置收集从光源发射的光并照射光记录介质。 在其上形成的物镜和抗反射膜被设定为使得入射在物镜的最外边缘上的光的强度为从光源到中心的入射光强度的45％以上且80％以下 物镜。 根据该结构，能够提供能够抑制透镜边缘的光量减少的高NA物镜的光拾取装置。

公开(公告)号：US5668746A

公开(公告)日：1997-09-16

申请号：US364187

申请日：1994-12-27

申请人： Tetsuo Iwaki ,  Toshiaki Harada ,  Chiaki Yamawaki

发明人： Tetsuo Iwaki ,  Toshiaki Harada ,  Chiaki Yamawaki

IPC分类号： G11B5/035 ,  G11B5/09 ,  G11B20/10 ,  H03H15/00 ,  H03H17/00 ,  H03H17/02 ,  H03H21/00 ,  H04B3/04 ,  G06F17/10 ,  G11B5/00

CPC分类号： G11B20/10037 ,  G11B20/10009 ,  G11B20/10046 ,  G11B5/035 ,  G11B5/09

摘要： Low-frequency components of a reproduced modulated signal is attenuated by an analog high-pass filter. The modulated signal with its low-frequency components attenuated is converted into a digital signal by means of an A/D converter. Then, the digital signal is directly introduced to a finite impulse response digital filter to be subjected to reproduced waveform equalization. Thereafter, the attenuation of the low-frequency components effected by the analog high-pass filter is compensated in an infinite impulse response digital filter.

摘要翻译： 再现调制信号的低频分量由模拟高通滤波器衰减。 其衰减的低频分量的调制信号通过A / D转换器转换为数字信号。 然后，将数字信号直接引入有限脉冲响应数字滤波器以进行再现波形均衡。 此后，由无限脉冲响应数字滤波器补偿由模拟高通滤波器影响的低频分量的衰减。

公开(公告)号：US5414719A

公开(公告)日：1995-05-09

申请号：US46853

申请日：1993-04-15

申请人： Tetsuo Iwaki ,  Toshihisa Tanaka ,  Eiji Yamada

发明人： Tetsuo Iwaki ,  Toshihisa Tanaka ,  Eiji Yamada

IPC分类号： G06F7/72 ,  G06F11/10 ,  H03M13/01 ,  H03M13/15

CPC分类号： G06F7/724 ,  G06F11/10 ,  H03M13/01 ,  H03M13/151

摘要： An operating circuit of a Galois Field for executing an operation of the Galois field efficiently and rapidly includes an operating circuit (11) for receiving two elements of a Galois field, for performing an addition or a multiplication of the two elements, and for outputting a first operational result, an operating circuit (12) for receiving another two elements of the Galois field, for performing an addition or a multiplication of another two elements, and for outputting a second operational result, an operating circuit (13) for performing an addition of the first operational result and the second operational result on the Galois field, and for outputting a third operational result, a multiplexer (14) for selecting and one of the first operational result and the third operational result, and for outputting a selected result, a multiplexer (15) for selecting any one of the second operational result and the third operational result, and for outputting the selected result, a flag-decision circuit (18) for determining the first operational result and the second operational result as well as the third operational result.

摘要翻译： 用于高效地和快速地执行Galois场的操作的伽罗瓦域的操作电路包括用于接收Galois域的两个元件的操作电路（11），用于执行两个元件的相加或相乘，并且用于输出 第一操作结果，用于接收伽罗瓦域的另外两个元件的操作电路（12），用于执行另外两个元件的相加或乘法，并且用于输出第二操作结果;用于执行加法的操作电路（13） 的第一操作结果和第二操作结果，并且用于输出第三操作结果;多路复用器（14），用于选择第一操作结果和第一操作结果和第三操作结果之一，并且用于输出所选择的结果; 用于选择第二操作结果和第三操作结果中的任何一个的多路复用器（15），并且用于输出所选择的结果，标志判定 离子电路（18），用于确定第一操作结果和第二操作结果以及第三操作结果。