公开(公告)号：US20050094507A1

公开(公告)日：2005-05-05

申请号：US10967331

申请日：2004-10-19

申请人： Masakazu Ogasawara

发明人： Masakazu Ogasawara

IPC分类号： G11B7/00 ,  G11B7/0033 ,  G11B7/085 ,  G11B7/09 ,  G11B7/125 ,  G11B7/24

CPC分类号： G11B7/08511 ,  G11B7/0033 ,  G11B7/24038 ,  G11B2007/0013

摘要： A multilayer optical recording medium includes a plurality of recording layers that are laminated and have recording layer forming units into which information is recorded. Reflective film forming units are formed on parts of the respective recording layers and have a reflectance ratio sufficient to make a servo loop of a focus servo into a servo close condition. Reflective film forming units of the respective recording layers are arranged at respectively different positions.

摘要翻译： 多层光记录介质包括层叠的多个记录层，并具有记录信息的记录层形成单元。 反射膜形成单元形成在各个记录层的部分上，并具有足以使聚焦伺服的伺服回路成为伺服闭合状态的反射率。 各记录层的反射膜形成单元分别设置在不同的位置。

公开(公告)号：US20050013225A1

公开(公告)日：2005-01-20

申请号：US10694946

申请日：2003-10-29

申请人： Masakazu Ogasawara

发明人： Masakazu Ogasawara

IPC分类号： G11B7/24 ,  G11B7/00 ,  G11B7/004 ,  G11B7/007

CPC分类号： G11B7/00736 ,  G11B7/24038

摘要： A multilayer type of information recording medium (e.g., optical disk) is provided. The medium is- provided therein a plurality of information recording layers and a single corresponding-information recording layer into which information corresponding to information recorded in the information recording layers is recordable. The corresponding information is for example control information for controlling recording or reproduction of the information. The corresponding-information recording layer is provided with a reflection layer to reflect an optical beam radiated to optically read the corresponding information. A distance from a beam-incidence-side surface of the medium to the corresponding-information recording layer is the same as that in a monolayer type of information recording medium. An information recording and reproducing apparatus used, in a selective way, for the multilayer type and monolayer type of information recording mediums is provided as well.

摘要翻译： 提供了多层型的信息记录介质（例如，光盘）。 介质中设置有多个信息记录层和单个对应信息记录层，与记录在信息记录层中的信息相对应的信息可记录在其中。 相应的信息例如是用于控制信息的记录或再现的控制信息。 相应的信息记录层设置有反射层，以反射辐射的光束以光学读取对应的信息。 从介质的入射侧表面到对应信息记录层的距离与单层型信息记录介质的距离相同。 还提供了以选择性方式用于多层型和单层型信息记录介质的信息记录和再现装置。

公开(公告)号：US6125088A

公开(公告)日：2000-09-26

申请号：US035130

申请日：1998-03-05

申请人： Masakazu Ogasawara

发明人： Masakazu Ogasawara

IPC分类号： G11B7/095 ,  G11B7/135 ,  G11B7/09

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

摘要： An aberration correcting apparatus corrects an aberration of a beam 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 unit 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 assembly detects a tilt-angle of the information recording medium, and a controller controls the wave front aberration correcting unit corresponding on an output of the detector assembly.

摘要翻译： 像差校正装置校正由光源发射的光束的像差，并通过光学系统聚焦在信息记录介质上。 像差校正装置包括在光源和信息记录介质之间的光路中对准的波前像差校正单元，用于通过改变与施加电压相对应的折射率来校正入射光束的波前像差。 检测器组件检测信息记录介质的倾斜角度，并且控制器控制对应于检测器组件的输出的波前像差校正单元。

公开(公告)号：US07859973B2

公开(公告)日：2010-12-28

申请号：US11886078

申请日：2006-03-13

申请人： Masakazu Ogasawara ,  Makoto Sato

发明人： Masakazu Ogasawara ,  Makoto Sato

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G03H1/04 ,  G03H1/0402 ,  G03H1/0465 ,  G03H2001/0415 ,  G03H2001/0417 ,  G03H2001/0419 ,  G03H2210/22 ,  G11B7/0065 ,  G11B7/139 ,  G11C13/042

摘要： A hologram recording method is a method of recording a hologram, on a hologram recording apparatus that records information by forming a diffraction grating through oppositely irradiating the signal beam and the reference beam to the hologram record carrier. The hologram recording method includes a step of focusing the reference beam at a first numerical aperture from a first effective diameter by means of the reference-beam objective lens, a step of separating the reference beam in a part on the optical axis and a neighborhood thereof to thereby produce from the reference beam a recording reference beam to passes through the hologram record carrier at a second numerical aperture smaller than the first numerical aperture from a second effective diameter smaller than the first effective diameter by means of the reference-beam objective lens of the reference-beam optical system, and allowing the recording reference beam to exit coaxially to the reference beam, and a step of not allowing only the recording reference beam to exit toward the hologram record carrier by means of the signal-beam optical system.

摘要翻译： 全息记录方法是在全息图记录装置上记录全息图的方法，该全息图记录装置通过将信号光束和参考光束相对照射到全息图记录载体上形成衍射光栅来记录信息。 全息记录方法包括通过参考光束物镜将参考光束从第一有效直径聚焦在第一数值孔径的步骤，将参考光束在光轴上的部分及其附近分离的步骤 从而从所述参考光束产生记录参考光束，以通过小于所述第一数值孔径的第二数值孔径从小于所述第一有效直径的第二有效直径通过所述全息图记录载体借助于所述参考光束物镜 参考光束光学系统，并且允许记录参考光束与参考光束同轴地退出，以及不允许仅记录参考光束通过信号束光学系统朝向全息图记录载体排出的步骤。

公开(公告)号：US20100085859A1

公开(公告)日：2010-04-08

申请号：US12532974

申请日：2007-03-29

申请人： Kazuo Takahashi ,  Masakazu Ogasawara

发明人： Kazuo Takahashi ,  Masakazu Ogasawara

IPC分类号： G11B7/00

CPC分类号： G11B7/0065 ,  G03H1/0486 ,  G03H1/26 ,  G03H1/265 ,  G11B7/08564

摘要： A laser beam emitted from a laser light source is divided into two laser beams, a 2-dimensional spatial modulation is performed to one of the two divided laser beams based on recording information, the modulated laser beam is projected as signal light onto a recording medium, the other laser beam is projected as reference light onto the recording medium, and the recording information is recorded onto the recording medium. The recording information recorded on the recording medium is reproduced based on the laser beam transmitted through or reflected by the recording medium. An optical system includes: a rotatable mirror portion for guiding the reference light to the recording medium at an angle according to the direction of its reflecting surface; a vibration proofing member coupled with a rear surface of the mirror portion; and a driving mechanism which decides an angle position of the mirror portion and is coupled with the mirror portion.

摘要翻译： 从激光光源发射的激光束被分成两束激光束，基于记录信息对两个划分的激光束中的一个进行二维空间调制，将调制的激光束作为信号光投影到记录介质上 ，将另一个激光束作为参考光投射到记录介质上，并将记录信息记录在记录介质上。 记录在记录介质上的记录信息基于通过记录介质传输或反射的激光束被再现。 一种光学系统包括：可旋转镜部分，用于根据其反射表面的方向以一定角度将参考光引导到记录介质; 与镜部分的后表面联接的防振构件; 以及驱动机构，其决定镜部的角度位置并与镜部连结。

公开(公告)号：US20090167193A1

公开(公告)日：2009-07-02

申请号：US12299941

申请日：2007-11-27

申请人： Masakazu Ogasawara ,  Takaaki Gyoten

发明人： Masakazu Ogasawara ,  Takaaki Gyoten

IPC分类号： H05B37/02

CPC分类号： H04N9/3123 ,  G03B21/2053 ,  G09G3/2014 ,  G09G3/3406 ,  G09G2360/145 ,  H04N9/3155

摘要： An image display apparatus which represents a grayscale by pulse-width modulation driving of a display element includes: a light source which illuminates the display element; a light source driving part which drives the light source; a photodetector which detects the emission intensity of light emitted from the light source; a sample-and-holder which obtains the emission intensity of the light source by the photodetector at a predetermined timing in a light emission period of the light source; and a compensation current generating part which (i) obtains the manner in which the emission intensity of the light source changes on the basis of a first sample value obtained at a first timing by the sample-and-holder and of a second sample value obtained at a second timing by the sample-and-holder or a predetermined target value of the emission intensity; and (ii) controls the light source driving part for compensating the emission intensity of the light source on the basis of the obtained manner in which the emission intensity changes.

摘要翻译： 通过显示元件的脉宽调制驱动来表示灰阶的图像显示装置包括：照亮显示元件的光源; 驱动光源的光源驱动部; 光检测器，其检测从光源发射的光的发射强度; 采样保持器，其在光源的发光期间中以预定的时刻由光电检测器获得光源的发光强度; 以及补偿电流产生部分，其（i）基于由所述采样和持有者在第一定时获得的第一样本值和获得的第二样本值来获得所述光源的发光强度变化的方式 在第二时间由采样持有者或发射强度的预定目标值; 以及（ii）基于所获得的发光强度变化的方式来控制用于补偿光源的发光强度的光源驱动部。

公开(公告)号：US20080291807A1

公开(公告)日：2008-11-27

申请号：US11579613

申请日：2005-04-26

申请人： Yoshihisa Itoh ,  Masakazu Ogasawara

发明人： Yoshihisa Itoh ,  Masakazu Ogasawara

IPC分类号： G11B7/00

CPC分类号： G03H1/0252 ,  G03H1/02 ,  G03H2250/41 ,  G03H2250/42 ,  G11B7/0065

摘要： A hologram recording carrier is provided with a hologram recording layer that stores inside an optical interference pattern made by components of irradiated coherent reference light and signal light, as a diffraction grating; and a polarization selective reflection film that is arranged on an opposite side to a light irradiation plane of the hologram recording layer and reflects a second linear polarization component rotated from a first linear polarization component, without reflecting the first linear polarization component of incident light.

摘要翻译： 全息记录载体设置有全息图记录层，其存储由照射的相干参考光和信号光的组分制成的光学干涉图案作为衍射光栅; 以及偏振选择反射膜，其布置在与全息图记录层的光照射平面相反的一侧上，并且反射从第一线偏振分量旋转的第二线偏振分量，而不反映入射光的第一线偏振分量。

公开(公告)号：US20080247010A1

公开(公告)日：2008-10-09

申请号：US11908828

申请日：2006-03-13

申请人： Masakazu Ogasawara ,  Yoshihisa Itoh ,  Yoshihisa Kubota

发明人： Masakazu Ogasawara ,  Yoshihisa Itoh ,  Yoshihisa Kubota

IPC分类号： G11B7/0065 ,  G03H1/12

CPC分类号： G11B7/083 ,  G03H1/12 ,  G03H1/26 ,  G03H2001/2675 ,  G11B7/0065

摘要： There is provided a hologram recording and reproducing apparatus for a hologram recording medium that stores optical interference fringes therein as a diffraction grating generated by coherent reference light and signal light. The hologram recording and reproducing apparatus includes a control circuit that is connected to a spatial light modulator and controls each pixel in such a way that the reference light is modulated according to information data to produce the signal light. The control circuit spatially classifies a plurality of pixels in the spatial light modulator into a central modulation area disposed on the optical axis and at least one annular modulation area sequentially disposed around the central modulation area in a concentric manner, and controls the pixels in the central modulation area and the pixels in the annular modulation area using respective different recording modulation methods to deliver the signal light through the central modulation area and the annular modulation area.

摘要翻译： 提供了一种用于全息图记录介质的全息图记录和再现装置，其在其中存储光学干涉条纹作为由相干参考光和信号光产生的衍射光栅。 全息图记录和再现装置包括连接到空间光调制器并控制每个像素的控制电路，使得根据信息数据调制参考光以产生信号光。 控制电路将空间光调制器中的多个像素空间分类为设置在光轴上的中央调制区域和以同心方式顺序地设置在中央调制区域周围的至少一个环形调制区域，并且控制中心的像素 调制区域和环形调制区域中的像素，使用各自的不同的记录调制方法将信号光传送通过中央调制区域和环形调制区域。

公开(公告)号：US07170661B2

公开(公告)日：2007-01-30

申请号：US11000523

申请日：2004-12-01

申请人： Masakazu Ogasawara ,  Michio Sakano ,  Satoru Tanaka ,  Akihiro Tachibana ,  Yoshihisa Kubota ,  Yoshihisa Itoh ,  Michikazu Hashimoto ,  Kazuo Kuroda ,  Satoshi Sugiura

发明人： Masakazu Ogasawara ,  Michio Sakano ,  Satoru Tanaka ,  Akihiro Tachibana ,  Yoshihisa Kubota ,  Yoshihisa Itoh ,  Michikazu Hashimoto ,  Kazuo Kuroda ,  Satoshi Sugiura

IPC分类号： G03H1/00 ,  G03H1/26 ,  G02B5/18 ,  G02B27/42

CPC分类号： G03H1/02 ,  G03H1/0256 ,  G11B7/0065 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/2403 ,  G11B7/24044 ,  G11B7/241 ,  G11B7/2531 ,  G11B7/2533 ,  G11B7/2585

摘要： A hologram recording medium is a hologram recording medium which is irradiated with light for recording information therein or reproducing information therefrom. The hologram recording medium has a recording layer made of a photo-sensitive material capable of preserving an optical interference pattern, a reflective layer disposed on one side of the recording layer opposite to the side on which an light beam impinges, and a quarter wavelength plate interposed between the recording layer and the reflective layer.

摘要翻译： 全息记录介质是用光照射的全息图记录介质，用于在其中记录信息或从其再现信息。 全息图记录介质具有由能够保持光学干涉图案的光敏材料制成的记录层，设置在与光束入射的一侧相对的记录层的一侧的反射层和四分之一波长板 介于记录层和反射层之间。

公开(公告)号：US07110343B2

公开(公告)日：2006-09-19

申请号：US10655473

申请日：2003-09-04

申请人： Masakazu Ogasawara

发明人： Masakazu Ogasawara

IPC分类号： G11B7/00

CPC分类号： G11B7/0948 ,  G11B7/1369 ,  G11B7/1378 ,  G11B7/13927 ,  G11B2007/0013

摘要： An aberration correction apparatus includes a first aberration correction element having aberration correction portions, a second aberration correction element which causes the wave front of the transmitted light beam to have a blaze hologram shape, a discriminator which discriminates the aberration of the reflected light beam, a coarse phase adjuster which drives the second aberration correction element on the basis of the magnitude of the aberration of the reflected light beam, and a fine phase adjuster which corrects aberration remained after the aberration correction by the coarse phase adjuster.

摘要翻译： 像差校正装置包括具有像差校正部分的第一像差校正元件，使透射光束的波前具有火焰全息图形状的第二像差校正元件，鉴别反射光束的像差的鉴别器， 基于反射光束的像差的大小来驱动第二像差校正元件的粗略相位调整器，以及通过粗调相位调节器校正像差校正后残留的像差的微调相位调节器。