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1. 发明专利

JP2007317284A Optical disk device 审中-公开
标题翻译：光盘设备
公开(公告)号：JP2007317284A
公开(公告)日：2007-12-06
申请号：JP2006144744
申请日：2006-05-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIMANO TAKESHI , MIYAMOTO JIICHI
IPC分类号： G11B7/135
CPC分类号： G11B7/1362 , G11B7/1356 , G11B7/1365
摘要： PROBLEM TO BE SOLVED: To provide an optical disk device equipped with an interference type optical disk signal detection system which easily adjusts an optical path difference between two kinds of light, has a high signal amplification effect and is suitable for miniaturization of an optical system. SOLUTION: An interference type optical system is integrally formed to stabilize an optical path difference between signal light and reference light. An adjustment means 113 for adjusting the optical path length of the reference light is added to a reference mirror 114, and then control is made so that a signal amplitude is always maximized in response to the temporal variations of the optical path length due to a variation in thickness of a cover layer of an optical disk 102 and a temperature. The optical system is miniaturized by using a Twyman-Green interferometer. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种配备有容易调节两种光之间的光程差的干涉型光盘信号检测系统的光盘装置，具有高的信号放大效果，并且适合于小型化光学系统。解决方案：一体形成干涉型光学系统，以稳定信号光与参考光之间的光程差。将用于调整参考光的光程长度的调节装置113加到参考反射镜114上，然后进行控制，使得响应于由于变化引起的光程长度的时间变化，信号幅度总是最大化光盘102的覆盖层的厚度和温度。通过使用Twyman-Green干涉仪使光学系统小型化。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2007287321A Optical head and optical disk apparatus 有权
标题翻译：光头和光盘设备
公开(公告)号：JP2007287321A
公开(公告)日：2007-11-01
申请号：JP2007179196
申请日：2007-07-09
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIMANO TAKESHI , MAEDA TAKESHI , SUKETA YASUSHI
IPC分类号： G11B7/135 , G11B7/09 , G11B7/125
摘要： PROBLEM TO BE SOLVED: To solve such a problem that on a detection surface, influence of interference causes a defocusing signal to degrade to narrow the range in which spherical aberration can be stably detected. SOLUTION: A diffraction grating is used to focus the inner and outer sides of luminous flux on different optical detectors before the optical flux is focused on the optical detector, and after defocusing signals are independently calculated, spherical aberration is obtained by obtaining the difference. Thereby, spherical aberration can be obtained more stably. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题为了解决在检测面上的问题，干扰的影响会使散焦信号劣化，从而可以稳定地检测出球面像差的范围变窄。解决方案：衍射光栅用于在光通量聚焦在光学检测器上之前将光束的内侧和外侧聚焦在不同的光学检测器上，并且在散焦信号被独立计算之后，通过获得球面像差区别。由此，可以更稳定地获得球面像差。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2007102885A Optical disk and optical disk device 审中-公开
标题翻译：光盘和光盘设备
公开(公告)号：JP2007102885A
公开(公告)日：2007-04-19
申请号：JP2005289515
申请日：2005-10-03
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIMANO TAKESHI , KATO MORIKAZU , NAKAMURA SHIGEO , NANBA IRIZOU , ANZAI YUMIKO
IPC分类号： G11B23/03 , G11B23/40 , G11B33/02 , G11B33/12
摘要： PROBLEM TO BE SOLVED: To provide a compact optical disk device which is small in the occupancy area of an optical disk cartridge in a compact disk drive, and allows a user to easily understand a disk insertion direction into a drive device.
SOLUTION: An optical disk cartridge case is roughly formed into a D shape, a roughly fan-shaped opening window is disposed in its semicircular part, and the device is provided with a shutter rotated around a disk as a rotary axis to open/close the opening window. Thus, a cartridge and an actuator are arranged in a compact flash Type-II size, and the mistake of a disk insertion direction is reduced.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种小型光盘驱动器中的光盘盒的占用面积小的紧凑型光盘装置，并且允许用户容易地将盘插入方向理解为驱动装置。解决方案：光盘盒壳体大致形成为D形，其半圆形部分上设有大致扇形的开口窗，并且该设备设置有围绕盘旋转的旋转轴，以打开 /关闭开放窗口。因此，盒和致动器以紧凑型II型尺寸布置，并且盘插入方向的错误减少。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2006155698A Optical recording and reproducing device 审中-公开
标题翻译：光学记录和再现设备
公开(公告)号：JP2006155698A
公开(公告)日：2006-06-15
申请号：JP2004341380
申请日：2004-11-26
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： WATANABE KOICHI , KUROKAWA TAKAHIRO , AOKI MASAHIRO , SHIMANO TAKESHI
IPC分类号： G11B7/125 , G11B7/135
CPC分类号： G11B7/127 , G11B7/1263 , G11B7/128
摘要： PROBLEM TO BE SOLVED: To obtain a light source which reduces laser noise at the time of reading an optical disk. SOLUTION: The laser noise at the time of reading can be reduced without lowering the power at the time of writing by arranging a modulator in front of laser which can vary attenuation by voltage. According to this invention, an information recording and reproducing device which easily reduces the laser noise can be provided. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：获得在读取光盘时降低激光噪声的光源。解决方案：通过在激光器前面布置调制器，可以降低写入时的功率，从而可以降低读取时的激光噪声，从而可以通过电压来改变衰减。根据本发明，可以提供容易降低激光噪声的信息记录和再现装置。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2004171635A Information reproducing method and information reproducing apparatus of multilayer optical disk 有权
公开(公告)号：JP2004171635A
公开(公告)日：2004-06-17
申请号：JP2002334477
申请日：2002-11-19
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ARIYOSHI TETSUO , SHIMANO TAKESHI , MIYAMOTO JIICHI
IPC分类号： G11B7/24 , G11B7/00 , G11B7/005 , G11B7/085 , G11B7/09 , G11B7/095 , G11B7/125 , G11B7/13 , G11B7/135
CPC分类号： G11B7/1353 , G11B7/08505 , G11B7/0901 , G11B7/0908 , G11B7/095 , G11B7/131 , G11B7/1365 , G11B2007/0013
摘要： PROBLEM TO BE SOLVED: To reduce the period of time required before the disk is reproduced by discriminating recording layers, when reproducing a multilayer optical disk using a high NA objective lens. SOLUTION: A spherical aberration signal is detected as a differential signal between focus position fluctuation signals respectively in a central section and in a peripheral section of a reproduced flux of light. A recording layer is discriminated using a quantity of correction of spherical aberration at a zero-crossing point of a level or the spherical aberration signal. After adding the spherical aberration for the correction of the discriminated layer, residual spherical aberration is corrected by feedback control using a residual spherical aberration signal. COPYRIGHT: (C)2004,JPO

6. 发明专利

JP2003006909A Objective lens optical system, optical head and optical information reproducing device 有权
标题翻译：目标镜头光学系统，光学头和光学信息再现设备
公开(公告)号：JP2003006909A
公开(公告)日：2003-01-10
申请号：JP2001185559
申请日：2001-06-19
申请人： Hitachi Ltd , Pentax Corp , ペンタックス株式会社 , 株式会社日立製作所
发明人： SHIMANO TAKESHI , ARIYOSHI TETSUO , SHIGEMATSU KAZUO , MARUYAMA KOICHI , TAKEUCHI SHUICHI
IPC分类号： G02B5/30 , G02B13/00 , G02B13/18 , G02F1/13 , G11B7/09 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1378 , G11B7/093 , G11B7/0935 , G11B7/0943 , G11B7/13927
摘要： PROBLEM TO BE SOLVED: To reduce astigmatism generating by the shifting of the axis of coma aberration from the one to compensate to the one to be compensated with a tracking operation, in the compensation of coma aberration of an aberration compensating optical system, for the purpose of realizing one objective lens that shows a wide working distance, easy adjustment and a high NA.
SOLUTION: An objective lens 212 and the coma aberration compensating element 211 are integrated, fixed in a lens-barrel 230 and driven by a two-dimensional lens actuator 255. As a result, no eccentricity is caused between the objective lens 212 and the coma aberration compensating element 211, with no astigmatism generated.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了减少由偏振轴的偏移产生的散光，以补偿通过跟踪操作补偿的像差，在像差补偿光学系统的彗差的补偿中，为了目的实现显示宽工作距离，易调整和高NA的一个物镜。解决方案：物镜212和彗形像差补偿元件211被一体化，固定在透镜镜筒230中并由二维透镜致动器255驱动。结果，在物镜212和彗差之间不产生偏心像差补偿元件211，不产生像散。

7. 发明专利

JP2014131099A Image pick-up device 有权
标题翻译：图像拾取器件
公开(公告)号：JP2014131099A
公开(公告)日：2014-07-10
申请号：JP2012286632
申请日：2012-12-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SAKIDA KOICHI , SHIMANO TAKESHI , OTA MITSUHIKO
IPC分类号： H04N5/232 , G06T5/20
CPC分类号： H04N5/217 , G02B27/0068 , H04N5/2254 , H04N5/23212
摘要： PROBLEM TO BE SOLVED: To provide a technique for reducing the circuit scale related to restored image processing in an image pick-up device, configured to increase the focal depth by modulating an optical image and to remove the modulation by restored image processing, and for making the image pick-up device also applicable to capturing of video.SOLUTION: An image pick-up device includes an image sensor (3), an optical system (2) including a phase plate (21) for modulating the optical transfer function of the optical image of an object, and focusing the optical image modulated through the phase plate (21) on the image capturing surface of the image sensor (3), and a spatial filtering section (6) performing restored image processing for removing the modulation by an optical phase filter, by performing two-dimensional spatial filtering of a focused image on the image capturing surface of the image sensor (3). Modulation characteristics given to the optical image by the phase plate (21) are differentiated in two horizontal and vertical directions orthogonal to each other, on the image capturing plane perpendicular to an optical axis.
摘要翻译：要解决的问题：提供一种用于减小与图像拾取装置中的恢复图像处理有关的电路规模的技术，其被配置为通过调制光学图像来增加焦深，并通过恢复的图像处理来去除调制，并且为使图像拾取装置也适用于拍摄视频。解决方案：图像拾取装置包括图像传感器（3），光学系统（2），其包括用于调制光学传递函数的相位板（21）物体的光学图像，并将通过相位板（21）调制的光学图像聚焦在图像传感器（3）的图像捕获表面上，以及空间滤波部分（6），执行恢复的图像处理以通过通过在图像传感器（3）的图像捕获表面上执行聚焦图像的二维空间滤波来实现光学相位滤波器。在垂直于光轴的图像捕获平面上，通过相位板（21）给予光学图像的调制特性在彼此正交的两个水平和垂直方向上不同。

8. 发明专利

JP2013222066A Phase filter and imaging camera system including the same 审中-公开
标题翻译：相位滤波器和成像摄像机系统，包括它们
公开(公告)号：JP2013222066A
公开(公告)日：2013-10-28
申请号：JP2012093487
申请日：2012-04-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIMANO TAKESHI
IPC分类号： G02B5/30
CPC分类号： H04N5/225 , G02B27/46
摘要： PROBLEM TO BE SOLVED: To solve the problem in which conventional phase filters have a large aspherical unevenness, require a time to process a cutting work of a metal mold, consume costs such as material expenses, an operation power supply and the like, have many waste by-products, have to shoulder an environmental load, and further as the unevenness is larger, a thickness is relatively thick, so that a size of an optical system inserting the conventional phase filters and a weight thereof increase.SOLUTION: The phase filter is inserted in the vicinity of a stop position of a camera optical system in an imaging camera system consisting of the camera optical system image-forming a photograph object on an image sensor surface and a system performing an image process to a detection image. At least one face of the phase filter includes three convex parts and three concave parts in an effective diameter, one of the three convex parts is shaped to have a maximum value in the effective diameter, one of the three concave parts is shaped to have a minimum value in the effective diameter, and remaining two convex parts and two concave parts are shaped into a non-rotationally asymmetrical aspherical surface such that the convex part and the concave part slant outward from the effective diameter.
摘要翻译：要解决的问题为了解决常规相位滤波器具有大的非球面不平度的问题，需要时间处理金属模具的切割工作，消耗诸如材料费用，操作电源等的成本，具有许多浪费的副产物必须承受环境负荷，并且随着不平坦度的增大，厚度相对较厚，使得插入常规相滤波器的光学系统的尺寸和重量增加。解决方案：相位滤波器在摄像机系统中插入相机光学系统的停止位置附近，该成像照相机系统包括在图像传感器表面上成像照片对象的摄像机光学系统和对检测图像执行图像处理的系统。相位滤波器的至少一个面包括有效直径的三个凸部和三个凹部，三个凸部中的一个成形为在有效直径上具有最大值，三个凹部中的一个被成形为具有有效直径的最小值，剩余的两个凸部和两个凹部成形为非旋转非对称非球面，使得凸部和凹部从有效直径向外倾斜。

9. 发明专利

JP2008269680A Optical head and optical disk device 审中-公开
标题翻译：光头和光盘设备
公开(公告)号：JP2008269680A
公开(公告)日：2008-11-06
申请号：JP2007108967
申请日：2007-04-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MIKAMI HIDEJI , HASHIZUME SHIGEO , SHIMANO TAKESHI , MIYAMOTO JIICHI , KUDO HIROMI
IPC分类号： G11B7/135
摘要： PROBLEM TO BE SOLVED: To provide an interference type optical head which has a signal amplification effect, facilitates the adjustment of the optical path difference of an interferometer and is suitable for downsizing of an optical system. SOLUTION: When making light to be used as reference light without irradiating an optical disk 108 interfere with reflected light from the optical disk and amplifying signals, the optical path length, polarization and optical axis of the reference light are adjusted by using a corner cube 112, a polarization compensation element 123 and a beam displacer 122 respectively. Thus, an amplification effect is stably obtained while keeping the whole size to be equal to the conventional one. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供具有信号放大效果的干涉型光学头，有助于干涉仪的光程差的调整，并且适合于缩小光学系统的尺寸。解决方案：在不照射光盘108的情况下使光用作参考光时，干涉来自光盘的反射光和放大信号，参考光的光程长度，偏振光和光轴通过使用拐角立方体112，偏振补偿元件123和光束置换器122。因此，在保持整体尺寸与常规尺寸相同的情况下，稳定地获得放大效果。版权所有（C）2009，JPO＆INPIT

10. 发明专利

JP2007207382A Optical disk device 有权
标题翻译：光盘设备
公开(公告)号：JP2007207382A
公开(公告)日：2007-08-16
申请号：JP2006027154
申请日：2006-02-03
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KUDO HIROMI , KUROKAWA TAKAHIRO , SHIMANO TAKESHI , MIYAMOTO JIICHI
IPC分类号： G11B7/125 , G11B7/09 , G11B7/135
CPC分类号： G11B7/0943 , G11B7/1369
摘要： PROBLEM TO BE SOLVED: To correct astigmatism influencing the recording reproducing for an information recording medium. SOLUTION: When an astigmatism exists and the amount of spherical aberration to be added is shifted in a state where automatic focus and tracking control are applied, there are cases where the amount of the spherical aberration, in which push pull signal amplitude becomes the maximum, and the amount of the spherical aberration, in which 2T signal amplitude becomes the maximum, are matched and unmatched. If no astigmatism exists, they match each other. Then, when unmatched, the correction is performed using an astigmatic compensation element and, when matched, identification of existence or nonexistence for the astigmatism and the correction according to the astigmatic angle component are performed using a focus error signal from an adjoining track. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：纠正影响信息记录介质的记录再现的像散。解决方案：当在自动对焦和跟踪控制的状态下存在散光并且要添加的球面像差的量发生偏移时，存在其中推挽信号振幅成为的球面像差量的情况 2T信号振幅变为最大的球面像差的最大值和量的匹配和不匹配。如果没有散光存在，它们会相互匹配。然后，当不匹配时，使用像散补偿元件进行校正，并且当匹配时，使用来自相邻轨道的聚焦误差信号来执行用于散光的识别或根据散光角分量的校正的识别。版权所有（C）2007，JPO＆INPIT

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