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    • 23. 发明授权
    • Liquid crystal optical element and optical device
    • 液晶光学元件和光学元件
    • US07209426B2
    • 2007-04-24
    • US10500881
    • 2003-11-07
    • Nobuyuki Hashimoto
    • Nobuyuki Hashimoto
    • G11B7/00
    • G11B7/1369G11B7/0948G11B7/0956G11B7/13925G11B7/13927G11B19/02G11B2007/0006G11B2007/0013
    • The invention is directed to the provision of a liquid crystal optical element, for correcting wavefront aberrations (principally, coma aberration and spherical aberration), that can be mounted separately from an objective lens, and an optical apparatus using such a liquid crystal optical element. The liquid crystal optical element according to the invention includes a first transparent substrate, a second transparent substrate, a liquid crystal sealed between the first and second transparent substrates, and an electrode pattern as a region for advancing or delaying the phase of a light beam and thereby correcting wavefront aberration, wherein the region is formed smaller than the field of view of the objective lens so that the region substantially stays within the field of view of the objective lens regardless of the tracking motion of tracking means.
    • 本发明涉及提供用于校正可与物镜分开安装的波前像差(主要是彗形像差和球面像差)的液晶光学元件以及使用这种液晶光学元件的光学装置。 根据本发明的液晶光学元件包括第一透明基板,第二透明基板,密封在第一和第二透明基板之间的液晶,以及作为用于使光束的相位前进或延迟的区域的电极图案,以及 从而校正波前像差,其中该区域形成为小于物镜的视场,使得该区域基本上保持在物镜的视场内,而与跟踪装置的跟踪运动无关。
    • 24. 发明申请
    • Wavefront aberration correcting device and optical pickup equipped with the same
    • 波前像差校正装置和配备其的光学拾取器
    • US20050237897A1
    • 2005-10-27
    • US10527053
    • 2004-03-10
    • Yasuhiro TakakiEi-ichiro NishiharaNobuyuki Hashimoto
    • Yasuhiro TakakiEi-ichiro NishiharaNobuyuki Hashimoto
    • G02F1/13G11B7/135
    • G11B7/13927G02F1/13G02F2001/133776G02F2201/38G02F2203/18G11B7/1369
    • An object of the present invention is to provide a wavefront aberration correcting device comprising a liquid crystal deivce that maximizes transmittance and minimizes light transmittance fluctuations even when the liquid crystal is driven by voltage. Disclosed is a wavefront aberration correcting device for correcting a wavefront aberration of light generated in an optical path of an optical system for irradiating light onto a recording medium or guiding the reflected light reflected by the abovementioned recording medium is characterized in that it comprises a pair of opposing transparent electrode layers provided in the abovementioned optical path; and a liquid crystal sandwiched between the abovementioned transparent electrode layers, for generating phase change in passing light due to voltage applied to the abovementioned transparent electrode layers, the abovementioned transparent electrode layer is arranged on an antireflective body comprising a substrate, and a finestructure formed on a substrate and having a concave-convex structure.
    • 本发明的目的是提供一种波前像差校正装置,其包括使得透射率最大化并且即使当液晶被电压驱动时也使光透射率波动最小化的液晶衍射。 公开了一种用于校正在光学系统的光路中产生的用于将光照射到记录介质上或引导由上述记录介质反射的反射光的波前像差的波前像差校正装置,其特征在于,它包括一对 设置在上述光路中的相对的透明电极层; 以及夹在上述透明电极层之间的液晶,由于施加到上述透明电极层上的电压而产生通过光的相变,上述透明电极层设置在包括基板的抗反射体上,并且形成在 基板并具有凹凸结构。
    • 25. 发明申请
    • Liquid crystal optical element and an optical device
    • 液晶光学元件和光学器件
    • US20050140859A1
    • 2005-06-30
    • US11067648
    • 2005-02-28
    • Nobuyuki HashimotoShinya Sato
    • Nobuyuki HashimotoShinya Sato
    • G02F1/1335G02F1/1343G02F1/1333
    • G02F1/133512G02F1/134309
    • The present invention provides a compact liquid crystal optical element for optical modulation and a compact optical device. A liquid crystal optical element for optical modulation is prepared by connecting two transparent substrates, each formed with a transparent electrode and an orientation film, with a sealing member, leaving a clearance between the two transparent substrates. On at least one surface of at least one of these transparent substrates, a diaphragm is formed using a shielding member. With this arrangement, it is possible to provide a more compact liquid crystal optical element than has been conventionally available. At the same time, it is possible to substantially reduce the occurrence of noise. Therefore, it is possible to provide a liquid crystal optical element and an optical device having excellent performance.
    • 本发明提供一种用于光调制的紧凑型液晶光学元件和紧凑型光学器件。 通过将两个形成有透明电极和取向膜的透明基板与密封构件连接,在两个透明基板之间留有间隙来制备用于光学调制的液晶光学元件。 在这些透明基板中的至少一个的至少一个表面上,使用屏蔽构件形成隔膜。 通过这种布置,可以提供比传统可用的更紧凑的液晶光学元件。 同时,可以显着地减少噪声的发生。 因此,可以提供具有优异性能的液晶光学元件和光学装置。
    • 27. 发明授权
    • Optical device for super-resolution
    • 用于超分辨率的光学设备
    • US06721258B1
    • 2004-04-13
    • US10018566
    • 2001-12-20
    • Nobuyuki Hashimoto
    • Nobuyuki Hashimoto
    • G11B700
    • B82Y10/00G02B27/286G02B27/58G11B7/00G11B7/1369G11B7/1381G11B7/1387G11B2007/13727
    • The present invention is directed to the provision of an optical device that can easily eliminate only side lobes or side lobe components from a super-resolution optical spot. The optical device comprises: blocking means for blocking a portion of first linearly polarized light; a polarizing beam splitter for transmitting the first linearly polarized light therethrough, and for reflecting second linearly polarized light whose plane is oriented at right angles relative to the first linearly polarized light; a quarter-wave plate for converting the first linearly polarized light into first circularly polarized light and the first circularly polarized light into the first linearly polarized light, while converting second circularly polarized light, whose plane is rotating in a direction opposite to the first circularly polarized light, into the second linearly polarized light; a first converging lens for forming an optical spot on the optical disk, and for allowing reflected light caused by the optical spot by reflection from the optical disk to pass therethrough in a backward direction; and a second converging lens for focusing a beam of light reflected by the polarizing beam splitter onto a light detector.
    • 本发明涉及提供一种光学装置,其可以容易地从超分辨率光点消除旁瓣或旁瓣分量。 光学装置包括:用于阻挡第一线性偏振光的一部分的阻挡装置; 偏振分束器,用于透射第一线偏振光,并且用于反射相对于第一线性偏振光直线定向的第二直线偏振光; 用于将第一直线偏振光转换成第一圆偏振光的第四波长板和第一圆偏振光转换成第一线偏振光,同时转换第二圆偏振光,其平面沿与第一圆偏振光相反的方向旋转 光,进入第二线偏振光; 用于在光盘上形成光点的第一会聚透镜,并且用于允许来自光盘的反射引起的由光点引起的反射光沿反向通过; 以及用于将由偏振分束器反射的光束聚焦到光检测器上的第二会聚透镜。
    • 28. 发明授权
    • Printing-plate mounting-position instruction system
    • 印版安装位置指令系统
    • US06257141B1
    • 2001-07-10
    • US09326597
    • 1999-06-07
    • Nobuyuki HashimotoChuuji Miyauchi
    • Nobuyuki HashimotoChuuji Miyauchi
    • B41L4714
    • B41F27/1206B41P2227/60Y10S101/36
    • A printing-plate mounting-position instruction system instructs a worker where to mount a plurality of printing plates in a rotary printing press. The system includes a controller, a reader, a judging device, and a display device. The controller creates assignment information for assigning printing plates to mounting positions on each of plate cylinders used in each of printing units on the basis of production instruction information. The reader reads a mark on a printing plate for printing-surface information. The judging device is connected to the controller and the reader and collates the assignment information received from the controller and the printing-surface information received from the reader, thereby judging the location where the printing plate is to be mounted. The display device displays the result of the judgment.
    • 印版安装位置指令系统指示在旋转印刷机中安装多个印版的工人。 该系统包括控制器,读取器,判断装置和显示装置。 控制器基于生产指示信息,创建分配信息,用于将印版分配给每个印刷单元中使用的每个印版滚筒上的安装位置。 读卡器在印版上读取打印面信息的标记。 判断装置连接到控制器和读取器,并且对从控制器接收的分配信息和从读取器接收的打印面信息进行核对,从而判断要安装印版的位置。 显示装置显示判断结果。
    • 29. 发明授权
    • Optical information processor
    • 光信息处理器
    • US5847788A
    • 1998-12-08
    • US646142
    • 1996-05-07
    • Nobuyuki Hashimoto
    • Nobuyuki Hashimoto
    • G02F1/13G02B27/28G02B27/46G02F3/00G06E3/00G02F1/1335G02F1/133
    • G03H1/02G02B27/28G02B27/46G06E3/001G03H1/2294G03H2001/0224G03H2222/31G03H2225/22G03H2225/32G03H2225/36
    • An optical information processor according to the present invention comprises a spatial light modulator 1 illuminated by linearly polarized coherent light and a linear polarization detector element 2 for detecting light diffracted by the spatial light modulator 1, wherein a rotatory polarization element of the spatial light modulator 1 is arranged in such a manner that the direction of the major molecular axis 11 thereof at the incident light side substantially conforms to the linear polarization axis direction (Y-axis direction) of the coherent light and the linear polarization detector element 2 is arranged in such a manner that the detecting axis 21 thereof crosses substantially at right angles with the major polarization axis of the zero-order diffracted light 4 included in the diffracted light described above. As a result, it is possible to effectively reduce the zero-order diffracted light component which is not modulated by the spatial light modulator without increasing the entire length of the optical system so much and without requiring excessive electric circuit or processing time.
    • 根据本发明的光信息处理器包括由线性偏振相干光照明的空间光调制器1和用于检测由空间光调制器1衍射的光的线偏振检测器元件2,其中空间光调制器1的旋转偏振元件 以使其入射光侧的主分子轴11的方向基本上与相干光的线偏振轴方向(Y轴方向)一致的方式配置,线偏振检测元件2配置成 其检测轴21与包括在上述衍射光中的零级衍射光4的主偏振轴基本成直角地交叉的方式。 结果,可以有效地减少由空间光调制器未调制的零级衍射光分量,而不会增加光学系统的整个长度,而不需要过多的电路或处理时间。