公开(公告)号：US20130003022A1

公开(公告)日：2013-01-03

申请号：US13532819

申请日：2012-06-26

申请人： Teppei Tanaka ,  Takeshi Nakao ,  Masato Sugiyama ,  Michio Hatagi ,  Tomoto Kawamura ,  Hiromi Kita ,  Kunikazu Ohnishi

发明人： Teppei Tanaka ,  Takeshi Nakao ,  Masato Sugiyama ,  Michio Hatagi ,  Tomoto Kawamura ,  Hiromi Kita ,  Kunikazu Ohnishi

IPC分类号： G03B21/14 ,  G02B26/10

CPC分类号： G02B26/108 ,  H04N9/3129 ,  H04N9/3167 ,  H04N9/3173

摘要： A polarizing prism is shaped in the form of a hexahedron. A polarizing beam splitter film (PBS film) is arranged approximately in a diagonal direction of the hexahedron. The polarizing prism holds a relationship of A

摘要翻译： 偏振棱镜成形为六面体形式。 偏振分束膜（PBS膜）大致沿着六面体的对角线方向排列。 当偏光棱镜在光束到屏幕的出射方向（Y方向）上的尺寸为A时，其与来自光的光束的入射方向（X方向）的尺寸保持A

公开(公告)号：US20120293775A1

公开(公告)日：2012-11-22

申请号：US13473713

申请日：2012-05-17

申请人： Hiromi KITA ,  Kunikazu Ohnishi

发明人： Hiromi KITA ,  Kunikazu Ohnishi

IPC分类号： G03B21/14

CPC分类号： G02B26/101 ,  G02B26/105

摘要： A scanning type projector for scanning an optical beam emitted from a laser light source has a collimator lens and a scanning device. A beam demagnifying and shaping prism is disposed between the collimator lens and the scanning device. The cross section of the beam that is elliptical is demagnified along the major axis of the ellipse such that the cross section of the beam is shaped. Thus, the cross section of the beam fits within the effective diameter of a deflecting mirror incorporated in the scanning device. The optical beam is reflected efficiently. A bright image can be projected. The resolution is improved by the beam shaping effect.

摘要翻译： 用于扫描从激光光源发射的光束的扫描型投影仪具有准直透镜和扫描装置。 光束缩小和成形棱镜设置在准直透镜和扫描装置之间。 椭圆形的梁的横截面沿着椭圆的长轴被缩小，使得梁的横截面成形。 因此，梁的横截面适合于结合在扫描装置中的偏转镜的有效直径。 光束被有效地反射。 可以投射明亮的图像。 光束整形效果提高了分辨率。

公开(公告)号：US08693075B2

公开(公告)日：2014-04-08

申请号：US13450507

申请日：2012-04-19

申请人： Takeshi Nakao ,  Kunikazu Ohnishi ,  Hiromi Kita ,  Norio Hosaka

发明人： Takeshi Nakao ,  Kunikazu Ohnishi ,  Hiromi Kita ,  Norio Hosaka

IPC分类号： G02B26/12

CPC分类号： G02B26/101 ,  G02B27/0911 ,  G02B27/0955 ,  G03B21/2033 ,  G03B33/06 ,  G03B33/12 ,  H04N9/3129 ,  H04N9/3194

摘要： Optical beams emitted by optical sources are incident on a mirror surface of a scan mirror in a substantially vertical direction and reflected in a substantially vertical direction by the scan mirror. The mirror surface of the scan mirror is driven to repeatedly rotate two-dimensionally by a predetermined scan angle by a scan mirror drive circuit. A polarized beam splitter causes the optical beam emitted by the optical source to be incident on the scan mirror through a quarter wave plate, and outputs the optical beam that has been reflected by the scan mirror and passed through the quarter wave plate toward the screen. A scan angle expander is arranged on the output side of the polarized beam splitter, whereby the scan angle of the optical beam is increased by N times.

摘要翻译： 由光源发射的光束以大致垂直的方向入射在扫描镜的镜面上，并通过扫描镜以基本上垂直的方向反射。 通过扫描镜驱动电路驱动扫描镜的镜面被二维重复旋转预定的扫描角。 偏振分束器使得由光源发射的光束通过四分之一波片入射到扫描镜上，并输出被扫描反射镜反射并通过四分之一波片的光束朝向屏幕。 在偏振分束器的输出侧设置有扫描角扩展器，由此使光束的扫描角度增加N次。

公开(公告)号：US20130076800A1

公开(公告)日：2013-03-28

申请号：US13552682

申请日：2012-07-19

申请人： Michio HATAGI ,  Takeshi Nakao ,  Tomoto Kawamura ,  Kunikazu Ohnishi ,  Hiromi Kita

发明人： Michio HATAGI ,  Takeshi Nakao ,  Tomoto Kawamura ,  Kunikazu Ohnishi ,  Hiromi Kita

IPC分类号： G03B21/28 ,  G09G5/10

CPC分类号： H04N9/3129 ,  G02B26/105 ,  G02B27/1006 ,  G02B27/104 ,  G02B27/1066 ,  G02B27/141

摘要： In a light beam scanning projection apparatus which scans a light beam emitted from a laser light source, an image display apparatus is configured including a plurality of light beams, a reflection mirror for reflecting the light beams to project them onto a screen or the like, and a mirror driving unit for driving the reflection mirror so that the plurality of light beams are incident on the reflection mirror with different optical axes and projected on different projection areas, thereby displaying a single image with a plurality of images. Further, by forming a single image by causing a plurality of the light beams to have predetermined relative angles thereamong so as to make a plurality of images overlap on each other with slight shifts, a scanning projection apparatus is provided with which the luminance of the image is improved while conforming to safety standards.

摘要翻译： 在扫描从激光光源发射的光束的光束扫描投影装置中，图像显示装置被配置为包括多个光束，用于反射光束以将其投影到屏幕等上的反射镜， 以及反射镜驱动单元，用于驱动反射镜，使得多个光束以不同的光轴入射在反射镜上并投影在不同的投影区域上，从而显示具有多个图像的单个图像。 此外，通过使多个光束以预定的相对角度形成单个图像，以便使多个图像彼此轻微地重叠，提供了一种扫描投影装置，其中图像的亮度 在符合安全标准的情况下得到改进。

公开(公告)号：US20120275002A1

公开(公告)日：2012-11-01

申请号：US13450507

申请日：2012-04-19

申请人： Takeshi NAKAO ,  Kunikazu Ohnishi ,  Hiromi Kita ,  Norio Hosaka

发明人： Takeshi NAKAO ,  Kunikazu Ohnishi ,  Hiromi Kita ,  Norio Hosaka

IPC分类号： G02B26/10

CPC分类号： G02B26/101 ,  G02B27/0911 ,  G02B27/0955 ,  G03B21/2033 ,  G03B33/06 ,  G03B33/12 ,  H04N9/3129 ,  H04N9/3194

摘要： Optical beams emitted by optical sources are incident on a mirror surface of a scan mirror in a substantially vertical direction and reflected in a substantially vertical direction by the scan mirror. The mirror surface of the scan mirror is driven to repeatedly rotate two-dimensionally by a predetermined scan angle by a scan mirror drive circuit. A polarized beam splitter causes the optical beam emitted by the optical source to be incident on the scan mirror through a quarter wave plate, and outputs the optical beam that has been reflected by the scan mirror and passed through the quarter wave plate toward the screen. A scan angle expander is arranged on the output side of the polarized beam splitter, whereby the scan angle of the optical beam is increased by N times.

摘要翻译： 由光源发射的光束以大致垂直的方向入射在扫描镜的镜面上，并通过扫描镜以基本上垂直的方向反射。 通过扫描镜驱动电路驱动扫描镜的镜面被二维重复旋转预定的扫描角。 偏振分束器使得由光源发射的光束通过四分之一波片入射到扫描镜上，并输出被扫描反射镜反射并通过四分之一波片的光束朝向屏幕。 在偏振分束器的输出侧设置有扫描角扩展器，由此使光束的扫描角度增加N次。

公开(公告)号：US20120230172A1

公开(公告)日：2012-09-13

申请号：US13412649

申请日：2012-03-06

申请人： Takakiyo YASUKAWA ,  Taku Hoshizawa ,  Kunikazu Ohnishi ,  Yutaka Nagai

发明人： Takakiyo YASUKAWA ,  Taku Hoshizawa ,  Kunikazu Ohnishi ,  Yutaka Nagai

IPC分类号： G11B7/004

CPC分类号： G11B7/00736 ,  G11B7/0053 ,  G11B7/24094 ,  G11B20/00268 ,  G11B20/1217 ,  G11B20/1403 ,  G11B20/1426 ,  G11B2020/122 ,  G11B2220/2541

摘要： In the related art, writing of BCA data has been performed by a BCA cutter or the like after a user data area was formed. However, according to such a method, individual steps cannot help being provided for a disc manufacturing step in order to form the BCA. A burden on the disc manufacturer is large from a viewpoint of the number of disc producing steps and, further, manufacturing costs. By using a bit forming method similar to a user data area, the BCA manufacturing steps can be reduced. Specifically speaking, by devising a pit depth, a pit width, and a pit pattern, a modulation degree of a BCA portion can be further increased. A detecting method similar to that for the BCA in the related art can be applied.

摘要翻译： 在相关技术中，在形成用户数据区之后，通过BCA切割器等进行BCA数据的写入。 然而，根据这种方法，为了形成BCA，单独的步骤不能帮助提供用于盘制造步骤。 从盘片制造步骤的数量和制造成本来看，盘制造商的负担很大。 通过使用类似于用户数据区的位形成方法，可以减少BCA制造步骤。 具体来说，通过设计凹坑深度，凹坑宽度和凹坑图案，可以进一步提高BCA部分的调制度。 可以应用与现有技术中的BCA类似的检测方法。

公开(公告)号：US07911915B2

公开(公告)日：2011-03-22

申请号：US11905526

申请日：2007-10-02

申请人： Kunikazu Ohnishi ,  Tomoto Kawamura ,  Masayuki Inoue

发明人： Kunikazu Ohnishi ,  Tomoto Kawamura ,  Masayuki Inoue

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/0903 ,  G11B7/0945 ,  G11B2007/0006

摘要： An optical pickup includes a diffraction grating partitioned into three areas, in which the phase of periodic grating groove structure in an area is successively shifted from that in the adjacent area by 90°. In the generation of a differential push-pull signal, an amplification factor K for sub push-pull signals is varied depending on the type of the optical disk. By such composition of the optical pickup, amplitude deterioration of the tracking error signal accompanying displacement of the object lens is reduced.

摘要翻译： 光学拾取器包括分为三个区域的衍射光栅，其中区域中的周期性光栅槽结构的相位相继地从相邻区域中的相位移动90°。 在产生差分推挽信号时，副推挽信号的放大系数K根据光盘的类型而变化。 通过光学拾取器的这种组合，伴随物镜位移的跟踪误差信号的振幅恶化减小。

公开(公告)号：US07715298B2

公开(公告)日：2010-05-11

申请号：US11508969

申请日：2006-08-24

申请人： Kunikazu Ohnishi

发明人： Kunikazu Ohnishi

IPC分类号： G11B7/00

CPC分类号： G11B7/005 ,  G02B27/14 ,  G11B7/1275 ,  G11B7/1369 ,  G11B7/13927

摘要： An optical pickup module with enhanced aberration correctability is disclosed. This pickup includes more than two different types of laser light sources, an objective lens for collecting and focusing any one of the laser beams leaving the light sources onto an optical disc, and an aberration correction device of the liquid crystal (LC) type, which is disposed between the light sources and the objective lens. The aberration corrector has a surface on which multiple spaced-apart electrodes are patterned for enabling aberration correction relative to incident beams. The corrector controls the potential of a voltage being applied to each electrode in deference to incident beam properties and variations occurrable thereto, e.g., wavelength, effective beam diameter and relative incidence position offsets, thereby to optimally correct beam aberrations, such as coma aberration or wavefront aberration. An optical information reproduction apparatus using the pickup is also disclosed.

摘要翻译： 公开了具有增强的像差校正性的光学拾取模块。 该拾取器包括两种不同类型的激光光源，用于收集和聚焦离开光源的任何一个激光束到光盘上的物镜，以及液晶（LC）类型的像差校正装置， 设置在光源和物镜之间。 像差校正器具有其上形成有多个间隔开的电极以使得能够相对于入射光束进行像差校正的表面。 校正器根据入射光束的特性和发生的变化来控制施加到每个电极的电压的电位，例如波长，有效光束直径和相对入射位置偏移，从而最佳地校正诸如彗形像差或波前的光束像差 像差 还公开了一种使用拾取器的光学信息再现设备。

公开(公告)号：US07590043B2

公开(公告)日：2009-09-15

申请号：US11905529

申请日：2007-10-02

申请人： Kunikazu Ohnishi ,  Tomoto Kawamura ,  Masayuki Inoue

发明人： Kunikazu Ohnishi ,  Tomoto Kawamura ,  Masayuki Inoue

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/0903 ,  G11B7/0945 ,  G11B2007/0006

摘要： An optical pickup includes a diffraction grating partitioned into three areas, in which the phase of periodic grating groove structure in an area is successively shifted from that in the adjacent area by 90°. In the generation of a differential push-pull signal, an amplification factor K for sub push-pull signals is varied depending on the type of the optical disk. By such composition of the optical pickup, amplitude deterioration of the tracking error signal accompanying displacement of the object lens is reduced.

摘要翻译： 光学拾取器包括分为三个区域的衍射光栅，其中区域中的周期性光栅槽结构的相位相继地从相邻区域中的相位移动90°。 在产生差分推挽信号时，副推挽信号的放大系数K根据光盘的类型而变化。 通过光学拾取器的这种组合，伴随物镜位移的跟踪误差信号的振幅恶化减小。

公开(公告)号：US20070223349A1

公开(公告)日：2007-09-27

申请号：US11508628

申请日：2006-08-22

申请人： Kenichi Shimada ,  Kunikazu Ohnishi ,  Nobuhiro Konuma

发明人： Kenichi Shimada ,  Kunikazu Ohnishi ,  Nobuhiro Konuma

IPC分类号： G11B7/00

CPC分类号： G11B7/1367 ,  G11B7/0903 ,  G11B2007/0006 ,  G11B2007/0013

摘要： An optical pickup for writing information to and/or for reading information from an optical disc having at least two recording layers (dual layer) provided with first and second recording layers can prevent layer crosstalk resulting from disturbing a signal reproduced from the first recording layer by a reflected light beam reflected from the second recording layer during a writing operation for writing information to the first recording layer or a reading operation for reading information from the fist recording layer. An orthogonal polarization region forming component forms an orthogonal polarization region, in which respective directions of polarization of a first light beam focused on and reflected by a first recording layer of an optical disc and a second light beam reflected by a second recording layer of the optical disc are perpendicular to each other, in a region, in which the first and the second light beam overlap each other, on a light-receiving surface of a detector. The orthogonal polarization region forming component is a polarization switch for changing the directions of polarization of part or all of the first and the second light beam.

摘要翻译： 用于向具有第一和第二记录层的至少两个记录层（双层）的光盘写入信息和/或从其读取信息的光学拾取器可以防止由于干扰由第一记录层再现的信号而引起的层串扰 在用于将信息写入第一记录层的写入操作期间从第二记录层反射的反射光束或用于从第一记录层读取信息的读取操作。 正交偏振区域形成部件形成正交偏振区域，其中聚焦在光盘的第一记录层上的第一光束的偏振方向和由光学器件的第二记录层反射的第二光束 在第一和第二光束彼此重叠的区域中，光盘在检测器的光接收表面上彼此垂直。 正交偏振区域形成部件是用于改变第一和第二光束的部分或全部的偏振方向的偏振开关。