公开(公告)号：US06985425B2

公开(公告)日：2006-01-10

申请号：US10174952

申请日：2002-06-20

申请人： Masahiko Tsukuda ,  Kazuhiro Hayashi ,  Fumiaki Ueno

发明人： Masahiko Tsukuda ,  Kazuhiro Hayashi ,  Fumiaki Ueno

IPC分类号： G11B9/00

CPC分类号： H01J37/1472 ,  B82Y10/00 ,  B82Y40/00 ,  G11B7/261 ,  G11B9/10 ,  H01J37/045 ,  H01J37/3174 ,  H01J2237/31754

摘要： Pits are exposed and formed on a resist master disc by an electron beam recorder. A leading end and a trailing end of each pit are substantially the same form. The electron beam recorder includes: an electron beam source that discharges electron beams; a voltage controller that generates voltages based on a predetermined information signals; control electrodes that deflect the electron beams based on the voltages; a shield plate having a passing position to pass the electron beams and a shielding position to shield the electron beams; and a turntable that carries and rotates the disc. The voltage controller controls the voltages applied to the control electrodes to substantially equalize a first velocity of the electron beams to travel from a first shielding position to the passing position with a second velocity of the electron beams to travel from the passing position to a second shielding position.

公开(公告)号：US08081551B2

公开(公告)日：2011-12-20

申请号：US12617390

申请日：2009-11-12

申请人： Yoshiaki Komma ,  Masahiko Tsukuda ,  Joji Anzai ,  Yasumori Hino

发明人： Yoshiaki Komma ,  Masahiko Tsukuda ,  Joji Anzai ,  Yasumori Hino

IPC分类号： G11B7/00

CPC分类号： G11B7/24038

摘要： An object of the invention is to provide an optical recording medium and an optical information device that enable to improve the quality of a servo signal and a reproduction signal. In the case where shape-wise thicknesses tr1, tr2, tr3, and tr4 of a cover layer, a first intermediate layer, a second intermediate layer, and a third intermediate layer are respectively converted into thicknesses t1, t2, t3, and t4 of the respective corresponding layers each having a predetermined refractive index “no”, a defocus amount with respect to a layer having a refractive index nrα and a thickness trα (satisfying: 1≦α≦n (where α is a positive integer and n is an integer of 4 or more)), and a defocus amount with respect to a layer having the refractive index “no” and a thickness tα (satisfying: 1≦α≦n (where α is a positive integer and n is an integer of 4 or more)) are equal to each other; and the thicknesses t1, t2, t3, and t4 satisfy |t1−(t2+t3+t4)|≧1 μm, a difference between any two values of the thicknesses t1, t2, t3, and t4 is set to 1 μm or more in any case, and |(t1+t2)−(t3+t4)|≧1 μm.

摘要翻译： 本发明的目的是提供一种能够提高伺服信号和再现信号的质量的光学记录介质和光学信息设备。 在覆盖层，第一中间层，第二中间层和第三中间层的成形厚度tr1，tr2，tr3和tr4分别转换为厚度t1，t2，t3和t4的厚度t1，t2，t3和t3 各相应的层各自具有预定的折射率“no”，相对于具有折射率nrα和厚度trα的层的散焦量（满足：1＆nlE;α＆nlE; n（其中α是正整数，n是 4以上的整数））和相对于折射率“no”的层的散焦量和厚度tα（满足1＆nlE;α＆nlE; n（其中α为正整数，n为4的整数） 或更多））彼此相等; 厚度t1，t2，t3，t4满足| t1-（t2 + t3 + t4）|≥1μm，厚度t1，t2，t3，t4的任意两个值之间的差设定为1μm， |（t1 + t2） - （t3 + t4）|≥1μm。

公开(公告)号：US20100195474A1

公开(公告)日：2010-08-05

申请号：US12679727

申请日：2009-07-27

申请人： Masahiko Tsukuda ,  Morio Tomiyama

发明人： Masahiko Tsukuda ,  Morio Tomiyama

IPC分类号： G11B7/26 ,  G11B7/135

CPC分类号： G11B7/24038 ,  G11B7/0948 ,  G11B7/13927 ,  G11B2007/0013

摘要： A disk-shaped optical information recording medium (115) includes a substrate (101), first to nth information layers (102-104) layered upon the substrate (where n is an integer of 3 or more), kth intermediate layers (105, 106) provided between a kth information layer and a (k+1)th information layer (where k=1, 2, and so on up to n−1), and a protective layer (107) provided upon the nth information layer. The fluctuation range of the thicknesses from the protective layer surface (107a) to each of the information layers (102-104) is no more than ±3 μm relative to the average value of the thicknesses within a range from a radius of 23 mm to 24 mm from the center of the optical information recording medium.

摘要翻译： 盘形光学信息记录介质（115）包括基板（101），层叠在基板上的第一至第n信息层（102-104）（其中n为3以上的整数），第k中间层 106）设置在第k个信息层和第（k + 1）个信息层（其中k = 1,2等等，直到n-1）之间，以及设置在第n个信息层上的保护层（107）。 从保护层表面（107a）到每个信息层（102-104）的厚度的波动范围相对于在从23mm的半径到25mm的范围内的厚度的平均值不超过±3μm 距光信息记录介质的中心24mm。

公开(公告)号：US20100149932A1

公开(公告)日：2010-06-17

申请号：US12617390

申请日：2009-11-12

申请人： Yoshiaki KOMMA ,  Masahiko Tsukuda ,  Joji Anzai ,  Yasumori Hino

发明人： Yoshiaki KOMMA ,  Masahiko Tsukuda ,  Joji Anzai ,  Yasumori Hino

IPC分类号： G11B7/00 ,  G11B7/24

CPC分类号： G11B7/24038

摘要： An object of the invention is to provide an optical recording medium and an optical information device that enable to improve the quality of a servo signal and a reproduction signal. In the case where shape-wise thicknesses tr1, tr2, tr3, and tr4 of a cover layer, a first intermediate layer, a second intermediate layer, and a third intermediate layer are respectively converted into thicknesses t1, t2, t3, and t4 of the respective corresponding layers each having a predetermined refractive index “no”, a defocus amount with respect to a layer having a refractive index nrα and a thickness trα (satisfying: 1≦α≦n (where α is a positive integer and n is an integer of 4 or more)), and a defocus amount with respect to a layer having the refractive index “no” and a thickness tα (satisfying: 1≦α≦n (where α is a positive integer and n is an integer of 4 or more)) are equal to each other; and the thicknesses t1, t2, t3, and t4 satisfy |t1−(t2+t3+t4)|≧1 μm, a difference between any two values of the thicknesses t1, t2, t3, and t4 is set to 1 μm or more in any case, and |(t1+t2)−(t3+t4)|≧1 μm.

摘要翻译： 本发明的目的是提供一种能够提高伺服信号和再现信号的质量的光学记录介质和光学信息设备。 在覆盖层，第一中间层，第二中间层和第三中间层的成形厚度tr1，tr2，tr3和tr4分别转换为厚度t1，t2，t3和t4的厚度t1，t2，t3和t3 各相应的层各自具有预定的折射率“no”，相对于具有折射率nrα和厚度trα的层的散焦量（满足：1＆nlE;α＆nlE; n（其中α是正整数，n是 4以上的整数））和相对于折射率“no”的层的散焦量和厚度tα（满足1＆nlE;α＆nlE; n（其中α为正整数，n为4的整数） 或更多））彼此相等; 厚度t1，t2，t3，t4满足| t1-（t2 + t3 + t4）|≥1μm，厚度t1，t2，t3，t4的任意两个值之间的差设定为1μm， |（t1 + t2） - （t3 + t4）|≥1μm。

公开(公告)号：US20100110871A1

公开(公告)日：2010-05-06

申请号：US12531601

申请日：2008-03-13

申请人： Masahiko Tsukuda ,  Morio Tomiyama ,  Kenji Narumi ,  Joji Anzai ,  Yuuko Tomekawa ,  Haruhiko Habuta

发明人： Masahiko Tsukuda ,  Morio Tomiyama ,  Kenji Narumi ,  Joji Anzai ,  Yuuko Tomekawa ,  Haruhiko Habuta

IPC分类号： G11B3/70

CPC分类号： G11B7/24038 ,  G11B7/2403

摘要： The recording/reproducing quality of a multilayer optical information recording medium deteriorate not only due to interference from other layers caused by light converging on other information layers but also due to stray light converging on the surface of a protective layer and stray light that does not converge on other information layers but rather returns to an optical head through the same optical path as the reproducing signal. The thickness composition of intermediate layers (106, 107, and 108) and the protective layer (109) in a four-layer optical information recording medium are set so as to eliminate the influence of interference caused by stray light from other layers reflected up to three times.

摘要翻译： 多层光学信息记录介质的记录/再现质量不仅由于聚光在其他信息层上而引起的其它层的干扰而劣化，而且还由于会聚在保护层的表面上的杂散光和不会聚的杂散光 在其他信息层上，而是通过与再现信号相同的光路返回到光头。 设置四层光学信息记录介质中的中间层（106,107,108）和保护层（109）的厚度组成，以消除由反射到其它层的杂散光引起的干扰的影响 三次。

公开(公告)号：US07361456B2

公开(公告)日：2008-04-22

申请号：US10570962

申请日：2004-09-03

申请人： Masahiko Tsukuda ,  Shinya Abe

发明人： Masahiko Tsukuda ,  Shinya Abe

IPC分类号： G11B7/26 ,  G03C5/00

CPC分类号： G11B7/261 ,  Y10S430/146 ,  Y10T29/49769 ,  Y10T29/53061

摘要： A method is provided for manufacturing a master disk in which there is precise feeding accuracy of the master disk by using a horizontally moving device which moves with curvature. The method of manufacturing a master disk includes the steps of rotating a resist master disk; moving the resist master disk; reading a moving distance on a path of the center point of the resist master disk associated with the movement; detecting a difference between the moving distance on the path of the center point and a moving distance on a straight line of the center point of the resist master disk associated with the movement; and controlling a predetermined manufacturing parameter on the basis of the detection result.

摘要翻译： 提供一种用于制造母盘的方法，其中通过使用以曲率移动的水平移动装置，主盘具有精确的进给精度。 制造母盘的方法包括以下步骤：旋转抗蚀剂母盘; 移动抗蚀剂母盘; 在与所述运动相关联的所述抗蚀剂母盘的中心点的路径上读取移动距离; 检测中心点的路径上的移动距离与与移动相关联的抗蚀剂母盘的中心点的直线上的移动距离之间的差异; 以及基于检测结果来控制预定的制造参数。

公开(公告)号：US07088668B1

公开(公告)日：2006-08-08

申请号：US10089402

申请日：2000-07-13

申请人： Tetsuya Akiyama ,  Kenichi Nishiuchi ,  Shigeaki Furukawa ,  Tomoyoshi Miyake ,  Masahiko Tsukuda

发明人： Tetsuya Akiyama ,  Kenichi Nishiuchi ,  Shigeaki Furukawa ,  Tomoyoshi Miyake ,  Masahiko Tsukuda

IPC分类号： G11B7/00

CPC分类号： G11B20/10 ,  G11B7/005 ,  G11B7/0053 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/24085

摘要： The width W of the address pit (9) of an optical recording medium of intermediate address type is determined by W=k Tp/(λ/NA) where λ is the laser wavelength of the optical head of the optical disk device use, NA is the numerical aperture of the objective, Tp is the track pitch of the record medium, and k is 0.40≦k≦0.68. Alternatively, an optical device comprises a first address demodulating circuit for demodulating address information by using a signal that is the sum of the electric signals outputted from a pair of photodetectors separated in the direction of the track and a second address demodulating circuit for demodulating address information by suing a signal that is the difference between the electric signals. The address is detected base on the information thus obtained. In such a way, the compatibility of the recording medium used and that of the optical device are improved, the reproduction margin in demodulating the address information is increased, realizing high accuracy address detection when reproducing data from an optical recorded medium of intermediate address type.

摘要翻译： 中间地址类型的光记录介质的地址凹坑（9）的宽度W由W = k Tp /（λ/ NA）确定，其中λ是光盘装置的光头的激光波长，NA 是物镜的数值孔径，Tp是记录介质的轨道间距，k是0.40 <= k <= 0.68。 或者，光学装置包括：第一地址解调电路，用于通过使用从在轨道方向上分离的一对光电检测器输出的电信号的和的信号和用于解调地址信息的第二地址解调电路来解调地址信息 通过起诉作为电信号之间的差异的信号。 根据获得的信息检测地址。 以这种方式，改善了所使用的记录介质和光学装置的兼容性，提高了解调地址信息的再现余量，在从中间地址类型的光学记录介质再现数据时实现了高精度的地址检测。

公开(公告)号：US20060108542A1

公开(公告)日：2006-05-25

申请号：US10528548

申请日：2003-10-24

申请人： Eiichi Ito ,  Masahiko Tsukuda

发明人： Eiichi Ito ,  Masahiko Tsukuda

IPC分类号： G01N23/00

CPC分类号： G11B7/261 ,  B82Y10/00 ,  B82Y40/00 ,  G21K5/04 ,  G21K5/10 ,  H01J37/3174 ,  H01J2237/043

摘要： In an electron beam exposure method in which an article subjected to exposure and an electron beam irradiation spot are moved relative to each other at a continuous speed, the article is exposed at a plurality of irradiation intensities of an electron beam by changing a transmittance of an electron optical system for forming the electron beam irradiation spot on the article.

摘要翻译： 在电子束曝光方法中，经受曝光的物品和电子束照射点以连续的速度相对于彼此移动，物品通过改变电子束的透射率而以多个照射强度曝光 用于在物品上形成电子束照射点的电子光学系统。

公开(公告)号：US20050088949A1

公开(公告)日：2005-04-28

申请号：US10975605

申请日：2004-10-28

申请人： Masahiko Tsukuda ,  Shinya Abe ,  Morio Tomiyama ,  Shuji Sato ,  Eiichi Ito

发明人： Masahiko Tsukuda ,  Shinya Abe ,  Morio Tomiyama ,  Shuji Sato ,  Eiichi Ito

IPC分类号： G03F7/20 ,  G11B7/00 ,  G11B7/125 ,  G11B7/128 ,  G11B7/1378 ,  G11B7/26 ,  G11B7/135

CPC分类号： G11B7/261 ,  G11B7/128 ,  G11B7/1378

摘要： An exposure apparatus of an optical disk master having a laser source, a deflector for deflecting a recording laser beam obtained based on the laser beam of the laser source and an objective lens for focusing the recording laser beam on an optical disk master, has a lens system provided between the laser source and the deflector, which has a first lens for focusing the laser beam and a second lens for adjusting the focused laser beam to a desired beam diameter; and a pinhole placed at a practical focal position of the lens system.

摘要翻译： 具有激光源的光盘主机的曝光装置，用于偏转基于激光源的激光束获得的记录激光束的偏转器和用于将记录激光束聚焦在光盘主机上的物镜具有透镜 设置在激光源和偏转器之间的系统，该偏转器具有用于聚焦激光束的第一透镜和用于将聚焦的激光束调整到所需光束直径的第二透镜; 以及放置在透镜系统的实际焦点位置处的针孔。

公开(公告)号：US08302119B2

公开(公告)日：2012-10-30

申请号：US12531601

申请日：2008-03-13

申请人： Masahiko Tsukuda ,  Morio Tomiyama ,  Kenji Narumi ,  Joji Anzai ,  Yuuko Tomekawa ,  Haruhiko Habuta

发明人： Masahiko Tsukuda ,  Morio Tomiyama ,  Kenji Narumi ,  Joji Anzai ,  Yuuko Tomekawa ,  Haruhiko Habuta

IPC分类号： G11B7/26 ,  G11B3/70

CPC分类号： G11B7/24038 ,  G11B7/2403

摘要： The recording/reproducing quality of a multilayer optical information recording medium deteriorate not only due to interference from other layers caused by light converging on other information layers but also due to stray light converging on the surface of a protective layer and stray light that does not converge on other information layers but rather returns to an optical head through the same optical path as the reproducing signal. The thickness composition of intermediate layers (106, 107, and 108) and the protective layer (109) in a four-layer optical information recording medium are set so as to eliminate the influence of interference caused by stray light from other layers reflected up to three times.

摘要翻译： 多层光学信息记录介质的记录/再现质量不仅由于聚光在其它信息层上而引起的其它层的干扰而劣化，而且还由于会聚在保护层的表面上的杂散光和不会聚的杂散光 在其他信息层上，而是通过与再现信号相同的光路返回到光头。 设置四层光学信息记录介质中的中间层（106,107,108）和保护层（109）的厚度组成，以消除由反射到其它层的杂散光引起的干扰的影响 三次。