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：US20080055713A1

公开(公告)日：2008-03-06

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： G02F1/29

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：US07944797B2

公开(公告)日：2011-05-17

申请号：US12294455

申请日：2007-03-14

申请人： Masakazu Ogasawara

发明人： Masakazu Ogasawara

IPC分类号： G11B7/00

CPC分类号： G11B7/00781 ,  G11B7/0065

摘要： A recording method which optically records two-dimensional data including a positioning mark and data area in a recording medium. In this method, the state of the positioning mark is changed from a first state to at least one second state different from the first state every given number of recording times of such two-dimensional data.

摘要翻译： 一种记录方法，其将包括定位标记和数据区的二维数据光记录在记录介质中。 在该方法中，定位标记的状态从这样的二维数据的每给定数量的记录次数从第一状态改变为与第一状态不同的至少一个第二状态。

公开(公告)号：US07821899B2

公开(公告)日：2010-10-26

申请号：US11996430

申请日：2006-07-03

申请人： Takuma Yanagisawa ,  Masakazu Ogasawara

发明人： Takuma Yanagisawa ,  Masakazu Ogasawara

IPC分类号： G11B7/00

CPC分类号： G11B7/1381 ,  G11B7/0903 ,  G11B7/094 ,  G11B7/1353

摘要： The present invention provides an optical pickup device requiring no position adjustment of a diffraction grating at the time of assembling the optical pickup device, and capable of suppressing fluctuations in a differential push-pull signal amplitude and cancelling a push-pull offset.An optical pickup device 200 of an embodiment of the present invention has a diffraction grating 230 of a special shape including predetermined grooves and two kinds of lattice grooves arranged at a pitch determined on the basis of a pitch of grooves formed in the surface of an optical disk 50, numerical aperture, wavelength of a light beam, and effective diameter of the light beam applied on the optical disk 50. To suppress push-pull signals generated in the ± first-order diffraction rays, reflection rays from the optical disk 50 of a zeroth-order diffraction ray and ± first-order diffraction rays are detected, and signals corresponding to light reception results are output to a reproduction unit 150, a control unit 130, and an actuator servo circuit 140.

摘要翻译： 本发明提供了一种在组装光学拾取装置时不需要对衍射光栅进行位置调整并且能够抑制差分推挽信号振幅的波动并取消推挽偏移的光学拾取装置。 本发明实施例的光学拾取装置200具有特殊形状的衍射光栅230，该衍射光栅230包括预定的凹槽和两个格栅槽，它们以基于在光学器件表面形成的凹槽的间距所确定的间距 盘50，数值孔径，光束波长和施加在光盘50上的光束的有效直径。为了抑制在±一级衍射光线中产生的推挽信号，来自光盘50的反射光线 检测到零级衍射线和±一级衍射线，并且将对应于光接收结果的信号输出到再现单元150，控制单元130和致动器伺服电路140。

公开(公告)号：US20100177619A1

公开(公告)日：2010-07-15

申请号：US12376595

申请日：2006-10-04

申请人： Makoto Sato ,  Masakazu Ogasawara ,  Takuma Yanagisawa

发明人： Makoto Sato ,  Masakazu Ogasawara ,  Takuma Yanagisawa

IPC分类号： G11B7/00

CPC分类号： G11B7/0901 ,  G11B7/0909 ,  G11B7/133 ,  G11B7/1353 ,  G11B2007/0013

摘要： A pickup device which, focusing a ray bundle on a track of a recording surface of an optical recording medium to form a light spot, comprises a detection optical system including a photo detector to receive return light reflected from the light spot via an objective lens and perform photoelectric conversion. The photo detector has at least two photoreceptor sections positioned axis-symmetrical with respect to a detection-side division line extending through an optical axis of the return light and parallel to the track. A dividing element placed in an optical path between the photo detector and the objective lens includes at least two inner divided areas positioned axis-symmetrical with respect to a deflection-side division line extending through the optical axis of the return light and parallel to the track, and at least two outer divided areas positioned sandwiching the inner divided areas and axis-symmetrical with respect to the deflection-side division line. The inner divided areas are formed such that parts of a light beam from the other region than overlap regions, divided axis-symmetrically along the deflection-side division line, are exchanged in position across the detection-side division line and directed to the photoreceptor sections of the photo detector so as to be axis-symmetrical with respect to the detection-side division line.

摘要翻译： 一种拾取装置，其将光束聚焦在光记录介质的记录表面的轨道上以形成光点，包括检测光学系统，其包括光电检测器，以接收经由物镜从光点反射的返回光;以及 执行光电转换。 光检测器具有至少两个相对于延伸通过返回光的光轴并平行于轨道的检测侧分割线轴对称的感光体部分。 放置在光检测器和物镜之间的光路中的分隔元件包括至少两个相对于延伸穿过返回光的光轴并平行于轨道的偏转侧分割线轴对称的内分割区域 以及至少两个外分割区域，其定位为夹着内分割区域并相对于偏转侧分割线轴对称。 内部分割区域被形成为使得来自另一区域的光束的部分比沿着偏转侧分割线轴对称分割的重叠区域的部分在检测侧分割线上交替位置并且被引导到感光体部分 的光检测器相对于检测侧分割线轴对称。

公开(公告)号：US07643094B2

公开(公告)日：2010-01-05

申请号：US10577031

申请日：2004-10-27

申请人： Masahiro Kawashima ,  Masanobu Tanaka ,  Masakazu Ogasawara

发明人： Masahiro Kawashima ,  Masanobu Tanaka ,  Masakazu Ogasawara

IPC分类号： H04N9/73

CPC分类号： G09G5/02 ,  G09G3/2003 ,  G09G2300/0443 ,  G09G2320/0242 ,  G09G2340/06

摘要： A color image processing apparatus performs color image display using a red display, green display, blue display and white display. The apparatus includes a white signal generation circuit generating a white signal W based on an input red signal Rin for the red display, an input green signal Gin for the green display, and an input blue signal Bin for the blue display, a yellow signal generation circuit generating a yellow signal Ye, based on the input red signal Rin, the input green signal Gin, and the generated white signal W, and a first output white signal generation circuit generating a first output white signal Wout(1) for the white display, based on the generated white signal W and the generated yellow signal Ye.

摘要翻译： 彩色图像处理装置使用红色显示，绿色显示，蓝色显示和白色显示来执行彩色图像显示。 该装置包括基于用于红色显示的输入红色信号Rin，用于绿色显示的输入绿色信号Gin和用于蓝色显示的输入蓝色信号Bin，产生黄色信号生成的白色信号产生电路 基于输入红色信号Rin，输入绿色信号Gin和产生的白色信号W产生黄色信号Ye的电路以及产生用于白色显示的第一输出白色信号Wout（1）的第一输出白色信号产生电路 基于产生的白色信号W和生成的黄色信号Ye。

公开(公告)号：US20090279406A1

公开(公告)日：2009-11-12

申请号：US12065327

申请日：2006-08-09

申请人： Masakazu Ogasawara

发明人： Masakazu Ogasawara

IPC分类号： G11B7/00

CPC分类号： G11B7/0065 ,  G11B7/00781 ,  G11B7/128 ,  G11B7/1353 ,  G11B7/1369 ,  G11B7/1374 ,  G11B7/24044 ,  G11B2007/13727

摘要： A hologram recording and reproducing system for recording or reproducing information to or from a hologram record carrier that stores an optical interference pattern of a reference beam and a signal beam therein as a diffraction grating, includes: light producing means that generates a reference beam and a signal beam based on a coherent beam in which the coherent beam is modulated into the signal beam according to information to be recorded; interference means that allows one of the reference and signal beams to propagate axially on an optical axis as a central region light flux and allows the other of the reference and signal beams to propagate coaxially and annularly in section as an annular region light flux surrounding the one spatially separated from the other in a same direction and converges both the reference beam and the signal beam on different focal points in the optical axis respectively through an objective lens optical system to cause interference between the reference beam and the signal beam; a hologram record carrier having a hologram record layer located on a side of a near one of the different focal points to the objective lens optical system and a reflection layer located on a side of a distant one of the different focal points from the objective lens optical system; and 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; wherein the hologram record carrier further comprising a servo guide layer which is placed at a position either nearer to the objective lens optical system than the hologram record layer or farther than the reflection layer from the objective lens optical system. The hologram recording and reproducing system further includes a servo control system for focusing a servo beam onto the servo guide layer and for receiving a reflection light returning from the servo guide layer to photoelectrically convert it to a signal and for driving the objective lens optical system in accordance with the signal photoelectrically converted, wherein the servo beam has a wavelength different from the coherent beam wavelength and passes through the central region coaxially with the central region light flux including the optical axis.

公开(公告)号：US07499386B2

公开(公告)日：2009-03-03

申请号：US11177638

申请日：2005-07-11

申请人： Masakazu Ogasawara

发明人： Masakazu Ogasawara

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/0956 ,  G11B7/13927 ,  G11B2007/0006

摘要： An aberration correction apparatus includes an optical pickup having a liquid crystal panel which gives a phase difference to a light beam emitted from a light source unit and irradiated onto a recording medium and corrects an aberration occurring to the light beam by a tilt of the recording medium, and a control unit which applies, to the liquid crystal panel, a correction voltage correspondent to an amount of the aberration in reference to a bias voltage. The bias voltage is set for each of the recording mediums so that the correction voltage applied for correcting the aberration of the same amount caused by the disc tilt becomes equal for different kinds of recording mediums. Namely, even when the plural kinds of recording mediums are used, if the disc tilt angles are same, the aberration can be corrected by applying the same correction voltage. Therefore, by using a control circuit for applying the correction voltage, the control can be executed with the same resolution irrespective of the kind of recording medium, and aberration correction accuracy of each recording medium can be improved.

摘要翻译： 像差校正装置包括具有液晶面板的光学拾取器，该液晶面板对从光源单元发射的光束照射到记录介质上，并且通过记录介质的倾斜来校正发生在光束上的像差， 以及控制单元，其向液晶面板施加与偏置电压相关的像差量的校正电压。 为每个记录介质设置偏置电压，使得用于校正由盘倾斜引起的相同量的像差的校正电压在不同种类的记录介质上相等。 也就是说，即使使用多种记录介质，如果盘倾斜角度相同，则可以通过施加相同的校正电压来校正像差。 因此，通过使用用于施加校正电压的控制电路，可以以相同的分辨率执行控制，而与记录介质的种类无关，并且可以提高每个记录介质的像差校正精度。

公开(公告)号：US20090009664A1

公开(公告)日：2009-01-08

申请号：US10577031

申请日：2004-10-27

申请人： Masahiro Kawashima ,  Masanobu Tanaka ,  Masakazu Ogasawara

发明人： Masahiro Kawashima ,  Masanobu Tanaka ,  Masakazu Ogasawara

IPC分类号： H04N9/73

CPC分类号： G09G5/02 ,  G09G3/2003 ,  G09G2300/0443 ,  G09G2320/0242 ,  G09G2340/06

摘要： A color image processing apparatus performs color image display using a red display, green display, blue display and white display. The apparatus includes a white signal generation circuit generating a white signal W based on an input red signal Rin for the red display, an input green signal Gin for the green display, and an input blue signal Bin for the blue display, a yellow signal generation circuit generating a yellow signal Ye, based on the input red signal Rin, the input green signal Gin, and the generated white signal W, and a first output white signal generation circuit generating a first output white signal Wout(1) for the white display, based on the generated white signal W and the generated yellow signal Ye.

摘要翻译： 彩色图像处理装置使用红色显示，绿色显示，蓝色显示和白色显示来执行彩色图像显示。 该装置包括基于用于红色显示的输入红色信号Rin，用于绿色显示的输入绿色信号Gin和用于蓝色显示的输入蓝色信号Bin，产生黄色信号生成的白色信号产生电路 基于输入红色信号Rin，输入绿色信号Gin和产生的白色信号W产生黄色信号Ye的电路以及产生用于白色显示的第一输出白色信号Wout（1）的第一输出白色信号产生电路 基于产生的白色信号W和生成的黄色信号Ye。

公开(公告)号：US20080037083A1

公开(公告)日：2008-02-14

申请号：US10594945

申请日：2005-03-15

申请人： Masakazu Ogasawara

发明人： Masakazu Ogasawara

IPC分类号： G03H1/18

CPC分类号： G11B7/0938 ,  G03H1/02 ,  G03H1/0256 ,  G11B7/0065 ,  G11B7/24038 ,  G11B7/24044

摘要： A hologram record carrier has a substrate and a reflective layer, wherein recording or reproducing of information is performed by light irradiation. The hologram record carrier further comprises a holographic recording layer that reserves an optical interference pattern comprising components of coherent reference light and signal light as a diffractive grating therein, and a two-dimensional recording layer that is laminated in a film thickness direction of the holographic recording layer and whose physical property changes in response to light intensity.

摘要翻译： 全息记录载体具有基板和反射层，其中通过光照射进行信息的记录或再现。 全息记录载体还包括全息记录层，其保留包含相干参考光和信号光的成分的光学干涉图案作为衍射光栅，以及在全息记录的膜厚度方向层叠的二维记录层 层，其物理性质响应于光强度而变化。