公开(公告)号：US20050047311A1

公开(公告)日：2005-03-03

申请号：US10916452

申请日：2004-08-12

申请人： Makoto Sato ,  Masakazu Ogasawara

发明人： Makoto Sato ,  Masakazu Ogasawara

IPC分类号： G11B7/09 ,  G11B7/00 ,  G11B7/125 ,  G11B7/135

CPC分类号： G11B7/13925 ,  G11B2007/0006

摘要： A disk reproducing apparatus for reproducing a disk that is any one of three kinds of disks, BD, DVD and CD, employing a BD objective lens, correct only aberration occurring inside the effective diameter of DVD, and leaves aberration outside the effective diameter, when reproducing DVD. Likewise, the disk reproducing apparatus corrects only aberration occurring inside the effective diameter of CD, and leaves aberration outside the effective diameter, when reproducing CD.

摘要翻译： 一种用于再现使用BD物镜的三种盘BD，DVD和CD中的任何一种的盘的盘再现装置，仅校正在DVD的有效直径内发生的像差，并且在有效直径之外离开像差，当 复制DVD。 同样地，当再现CD时，盘重放装置仅校正发生在CD的有效直径内的像差，并且在有效直径之外留下像差。

公开(公告)号：US06370095B1

公开(公告)日：2002-04-09

申请号：US09640718

申请日：2000-08-18

申请人： Masakazu Ogasawara

发明人： Masakazu Ogasawara

IPC分类号： G11B700

CPC分类号： G11B7/13927 ,  G02F2203/18 ,  G11B7/0956 ,  G11B7/1369

摘要： An aberration correcting apparatus for correcting an aberration of beam which is emitted from a light source and focused on an information recording medium by an optical system, the aberration correcting apparatus includes a wave front aberration correcting component aligned in an optical path between the light source and the information recording medium for correcting a wave front aberration of an incident beam by changing a refractive index corresponding to an applied voltage. A detector also detects a tilt-angle of the information recording medium, and a controller for controlling the wave front aberration correcting component corresponding to an output of the detector.

摘要翻译： 一种像差校正装置，用于校正由光源发射并通过光学系统聚焦在信息记录介质上的光束像差，该像差校正装置包括：在前述光源与 信息记录介质，用于通过改变对应于施加电压的折射率来校正入射光束的波前像差。 检测器还检测信息记录介质的倾斜角度，以及用于控制与检测器的输出相对应的波前像差校正分量的控制器。

公开(公告)号：US06172957B2

公开(公告)日：2001-01-09

申请号：US09047219

申请日：1998-03-25

申请人： Masakazu Ogasawara

发明人： Masakazu Ogasawara

IPC分类号： G11B700

CPC分类号： G11B7/1369 ,  G11B7/0956 ,  G11B7/13925 ,  G11B2007/0013

摘要： An optical pickup for use in a multi-layer disc playback apparatus for playing back a multi-layer disc having a plurality of recording layers including a wave front aberration correcting means that is disposed in an optical path between a light source and an objective lens and corrects wave front aberration of light emitted from the light source in accordance with a recording layer to be played back.

摘要翻译： 一种用于重放具有多个记录层的多层盘的多层盘播放装置的光拾取装置，所述多层盘包括设置在光源和物镜之间的光路中的波前像差校正装置和 根据要重放的记录层校正从光源发射的光的波前像差。

公开(公告)号：US5999503A

公开(公告)日：1999-12-07

申请号：US698797

申请日：1996-08-16

申请人： Kiyoshi Tateishi ,  Masakazu Ogasawara

发明人： Kiyoshi Tateishi ,  Masakazu Ogasawara

IPC分类号： G11B7/00 ,  G11B7/085 ,  G11B7/095

CPC分类号： G11B7/08511 ,  G11B2007/0013

摘要： Focus control apparatus in a reading apparatus for reading a multi-layered disk having information recorded on a plurality of recording surfaces thereof. The focus control apparatus includes a signal generating system for generating an acceleration signal for forcing the objective lens to move in the optical axis direction of the light beam and a deceleration signal for braking the objective lens which has been forced to move. The apparatus further includes control circuit for supplying a lens driving system with the acceleration signal and the deceleration signal as the driving signal in response to a switching instruction for switching a recording surface from which information is to be read, and for supplying the driving system with the focus error signal as the driving signal after the generation of the deceleration signal, to focus the light beam on a target recording surface. The deceleration signal has a parameter which is a function of distance between the recording surface which has been read before the switching instruction is issued and the target recording surface. Preferably, either of the acceleration signal and the deceleration signal is a signal which is compensated for the influence of gravity acting on the objective lens.

摘要翻译： 用于读取具有记录在其多个记录表面上的信息的多层盘的读取装置中的聚焦控制装置。 该聚焦控制装置包括：信号发生系统，用于产生用于迫使物镜在光束的光轴方向上移动的加速度信号;以及用于制动被迫移动的物镜的减速信号。 该装置还包括控制电路，用于响应于用于切换要从其读取信息的记录表面的切换指令，向镜头驱动系统提供加速度信号和减速信号作为驱动信号，并且用于向驱动系统提供 聚焦误差信号作为减速信号生成后的驱动信号，将光束聚焦在目标记录面上。 减速信号具有作为在切换指令被读出的记录面与目标记录面之间的距离的函数的参数。 优选地，加速度信号和减速信号中的任一个是补偿作用在物镜上的重力的影响的信号。

公开(公告)号：US08018814B2

公开(公告)日：2011-09-13

申请号：US11587935

申请日：2005-04-14

申请人： Masakazu Ogasawara ,  Shinichi Fujinoki

发明人： Masakazu Ogasawara ,  Shinichi Fujinoki

IPC分类号： G11B7/135 ,  G11B7/00

CPC分类号： G02F1/061 ,  G02F1/134309 ,  G02F2203/18 ,  G11B7/0948 ,  G11B7/0956 ,  G11B7/1369 ,  G11B7/13927

摘要： The present invention is to provide an improved aberration correction device formed by inserting an electro-optic panel such as a liquid crystal panel in an image-formation optical system to correct aberrations in the image-formation optical system, characterized in that such a correction device is capable of correcting three or more kinds of aberrations using only one electro-optic panel.Divided areas concerning coma aberration correction and divided areas concerning astigmatism correction are formed in one of the transparent electrodes of the electro-optic panel, while the rest of divided areas concerning coma aberration correction and divided areas concerning spherical aberration correction are formed in the other of the transparent electrodes. In this way, it is possible to form divided areas divided into electrode patterns suitable for correcting various aberrations, simplify as much as possible the electrode structure of the transparent electrodes consisting of the divided areas, thereby simplifying a control of voltages to be applied to the divided areas.

摘要翻译： 本发明提供一种改进的像差校正装置，其通过将图像形成光学系统中的诸如液晶面板的电光面板插入以校正图像形成光学系统中的像差而形成，其特征在于，这种校正装置 能够仅使用一个电光面板来校正三种或更多种像差。 在电光面板的一个透明电极中形成有关于彗形像差校正的分割区域和散光校正的分割区域，而关于彗差校正的其余分割区域和关于球面像差校正的分割区域形成在另一个 透明电极。 以这种方式，可以形成分为适合于校正各种像差的电极图案的划分区域，尽可能地简化由分割区域构成的透明电极的电极结构，从而简化对施加到该区域的电压的控制 分区。

公开(公告)号：US08004951B2

公开(公告)日：2011-08-23

申请号：US12307853

申请日：2007-07-13

申请人： Masakazu Ogasawara ,  Takuma Yanagisawa ,  Katsuhiro Koike

发明人： Masakazu Ogasawara ,  Takuma Yanagisawa ,  Katsuhiro Koike

IPC分类号： G11B7/135

CPC分类号： G11B7/1353 ,  G11B7/0909 ,  G11B7/131 ,  G11B7/133 ,  G11B7/1378 ,  G11B2007/0013

摘要： A pickup device includes an irradiation optical system including an object lens for focusing light flux on a track of a recording surface of an optical recording media having a plurality of recording layers stacked while a spacer layer is interposed between the recording layers to form a spot and a detection optical system including an photo detector having a plurality of light receiving parts for receiving returning light reflected from the spot through the object lens to perform photoelectric conversion. The pickup device controls a position of the object leans according to an electrical signal calculated from outputs of the light receiving parts. The pickup device further includes an astigmatic device for providing astigmatism to the returning light directed to the light receiving parts and a division device, having divisional regions divided by a division line extending in an astigmatic direction about an optical axis of the returning light, for dividing the returning light having the astigmatism into a plurality of partial light fluxes divided for the respective divisional regions along the optical axis of returning light. The neighboring divisional regions provide the partial light fluxes with an optical action so that interference between the corresponding partial light fluxes does not occur on the light receiving parts.

摘要翻译： 拾取装置包括：照射光学系统，包括用于将光束聚焦在具有堆叠的多个记录层的光学记录介质的记录表面的轨道上的物镜，同时隔离层插入在记录层之间以形成点， 一种检测光学系统，包括具有多个光接收部分的光检测器，用于接收通过物镜从该点反射的返回光，以执行光电转换。 拾取装置根据从光接收部分的输出计算的电信号来控制物体倾斜的位置。 拾取装置还包括用于向指向光接收部分的返回光提供像散的像散装置和分割装置，该分割装置具有被围绕返回光的光轴沿像散方向延伸的分割线划分的分割区域，用于分割 将具有像散的返回光分离成沿着返回光的光轴分割成各分区的多个部分光束。 相邻分割区域提供具有光学作用的部分光束，使得在光接收部分上不发生对应的部分光束之间的干涉。

公开(公告)号：US07847805B2

公开(公告)日：2010-12-07

申请号：US10577373

申请日：2004-10-29

申请人： Masakazu Ogasawara ,  Akira Ueda ,  Hiroshi Miyai

发明人： Masakazu Ogasawara ,  Akira Ueda ,  Hiroshi Miyai

IPC分类号： G09G5/02

CPC分类号： G09G3/2003 ,  G09G3/2051 ,  G09G3/3607 ,  G09G5/02 ,  G09G2300/0452 ,  G09G2320/0242 ,  G09G2340/06 ,  H04N9/3114

摘要： A display apparatus, which makes one pixel displayable in four colors, that is, three primary colors and a white color, and inputs and displays chrominance signals corresponding to a mixing ratio of the four colors, includes a color correction instrument which performs first color correction of increasing the saturation of chrominance signals, and a second color correction of decreasing at least the saturation of the chrominance signals, when a predetermined color component exists in the chrominance signals corresponding to a pixel, selection instrument which switches temporally and selects either of first chrominance signals obtained by the first color correction, and second chrominance signals obtained by the second color correction, and a display instrument which displays the chrominance signals, which are selected, in the pixel.

摘要翻译： 一种显示装置，其使得一个像素可以四种颜色显示，即三原色和白色，并且输入和显示与四种颜色的混合比相对应的色度信号，包括执行第一颜色校正的颜色校正装置 增加色度信号的饱和度，以及当在与像素相对应的色度信号中存在预定颜色分量时，至少降低色度信号的饱和度的第二颜色校正，其在时间上切换并选择第一色度 通过第一颜色校正获得的信号和通过第二颜色校正获得的第二色度信号，以及在像素中显示被选择的色度信号的显示装置。

公开(公告)号：US20100046349A1

公开(公告)日：2010-02-25

申请号：US12593036

申请日：2007-03-29

申请人： Masaharu Nakano ,  Masakazu Ogasawara ,  Makoto Sato

发明人： Masaharu Nakano ,  Masakazu Ogasawara ,  Makoto Sato

IPC分类号： G11B7/00 ,  G11B7/0045

CPC分类号： G11B7/26 ,  G11B7/0045 ,  G11B7/00745 ,  G11B7/0908 ,  G11B7/24038

摘要： A fabrication method of a multilayer optical recording medium having a plurality of recording layers, comprises a step of preparing an optical recording medium having at least one record area; a write-position mark generating step of recording write-position marks in the record area beforehand; a step of preparing an optical system including a common objective lens to focus a data recording beam and a position mark recording beam on different positions in a thickness direction of the record area; a first data writing step of writing data between the write-position marks with following the write-position marks by the data recording beam; a position mark recording step of, in parallel with the first data writing step, recording new write-position marks in the record area by the position mark recording beam; and a second data writing step of writing data between the new write-position marks with following the new write-position marks by the data recording beam.

摘要翻译： 一种具有多个记录层的多层光学记录介质的制造方法，包括制备具有至少一个记录区域的光学记录介质的步骤; 写入位置标记生成步骤，预先在记录区域中记录写入位置标记; 准备包括用于将数据记录光束和位置标记记录光束聚焦在记录区域的厚度方向上的不同位置上的公共物镜的光学系统的步骤; 第一数据写入步骤，在写入位置标记之间通过数据记录光束跟随写入位置标记来写入数据; 位置标记记录步骤，与第一数据写入步骤并行，通过位置标记记录光束在记录区域中记录新的写入位置标记; 以及第二数据写入步骤，用于通过数据记录光束在新的写入位置标记之间写入新的写入位置标记之间的数据。

公开(公告)号：US20090268267A1

公开(公告)日：2009-10-29

申请号：US12441831

申请日：2006-10-11

申请人： Masakazu Ogasawara

发明人： Masakazu Ogasawara

IPC分类号： G03H1/26

CPC分类号： G11B7/0065 ,  G03H2250/40 ,  G11B7/00781 ,  G11B7/08564 ,  G11B7/0938

摘要： A hologram recording carrier that information is recorded into or reproduced from by irradiating light, comprises a hologram recording layer to store an optical interference pattern by coherent reference light and signal light as a hologram therein; and a servo layer laid on top of the hologram recording layer in a film thickness direction, multiple marks being recorded beforehand on the servo layer. The multiple marks form lines as multiple mark rows extending in a direction parallel to a relative movement direction of a light spot of a hologram recording beam irradiated on the hologram recording carrier.

摘要翻译： 信息被记录或通过照射光再现的全息记录载体包括全息图记录层，用于通过相干参考光和信号光作为全息图存储光学干涉图案; 以及在膜厚度方向上放置在全息图记录层顶部的伺服层，预先在伺服层上记录多个标记。 该多重标记形成为沿着平行于照射在全息图记录载体上的全息图记录光束的光点的相对移动方向的方向延伸的多个标记行。

公开(公告)号：US20090262408A1

公开(公告)日：2009-10-22

申请号：US12065235

申请日：2006-08-03

申请人： Masakazu Ogasawara

发明人： Masakazu Ogasawara

IPC分类号： G03H1/04

CPC分类号： G11B7/0065 ,  G03H2222/31 ,  G11B7/083 ,  G11B7/1374

摘要： An optical pickup apparatus includes a light source for generating a coherent beam, a spatial light modulator having a central region arranged on an optical axis of the coherent beam and an annular region arranged in a manner surrounding the central region, to spatially separate a transmission component of the coherent beam through the central region and a transmission component through the annular region thereby producing a reference beam and a signal beam and propagating those coaxially in a same direction, an objective lens optical system arranged on the optical axis and for illuminating the signal beam and the reference beam coaxially toward the hologram record layer and causing the reference beam and the signal beam to focus on focal points different from each other, image detecting means arranged on the optical axis and for receiving a beam returning from the hologram record layer through the objective lens optical system when the reference beam is illuminated to the hologram record layer; and a polarization-plane rotating device having a central polarizing region arranged on the optical axis and an annular polarizing region arranged in a manner surrounding the central polarizing region and for making transmission components through the central and annular polarizing regions different in rotation angle on the polarization plane from each other.

摘要翻译： 光学拾取装置包括用于产生相干光束的光源，具有布置在相干光束的光轴上的中心区域的空间光调制器和以围绕中心区域的方式布置的环形区域，以空间分离透射部件 通过中心区域的相干光束和通过环形区域的透射分量，从而产生参考光束和信号光束并沿相同方向同轴传播;物镜光学系统，布置在光轴上并用于照射信号光束 和参考光束同轴地朝向全息图记录层，并使参考光束和信号光束聚焦在彼此不同的焦点上，图像检测装置被布置在光轴上，并且用于接收从全息图记录层返回的光束 当参考光束照射到全息图时，物镜光学系统 ord层 以及具有布置在光轴上的中心偏振光区域的偏振面旋转装置和以围绕中央偏振区域的方式布置的环形偏振光区域，并且用于使透射分量通过偏振角不同的中心和环形偏振光区域 飞机从彼此。