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140 条记录 (耗时 0.029 秒)

    Uneven-surface data detection apparatus
    2.
    发明授权
    Uneven-surface data detection apparatus 失效
    不均匀数据检测装置

    公开(公告)号：US4728186A

    公开(公告)日：1988-03-01

    申请号：US833276

    申请日：1986-02-27

    申请人： Shin Eguchi ,  Seigo Igaki ,  Hironori Yahagi ,  Fumio Yamagishi ,  Hiroyuki Ikeda ,  Takefumi Inagaki

    发明人： Shin Eguchi ,  Seigo Igaki ,  Hironori Yahagi ,  Fumio Yamagishi ,  Hiroyuki Ikeda ,  Takefumi Inagaki

    IPC分类号： G02B6/26 ,  G02B6/35 ,  G06K9/00 ,  G07C9/00 ,  G06K9/74

    CPC分类号： G06K9/00046 ,  G02B6/26 ,  G06K9/00899 ,  G07C9/00158 ,  G02B6/3522

    摘要： An uneven-surface data detection apparatus, includes a transparent plate having an uneven-surface contact portion against which an uneven surface to be detected is pressed. A light source illuminates the uneven-surface contact portion through the transparent plate. An uneven-surface image drawing out optical element draws out the light reflected on the uneven-surface contact portion of the transparent plate. A detector detects the light drawn out from the transparent plate by the optical element.Light reflected by a projection-facing portion of the uneven surface contact portion to be introduced into the detector diverges from a propagation direction of light reflected by a recess-facing portion of the uneven surface contact portion. The optical element is arranged to guide the light reflected by the projection-facing portion into the detector.

    摘要翻译： 不平坦面数据检测装置包括具有不平坦面接触部分的透明板，所述不平坦表面被按压到所述不平坦表面的接触部分。 光源通过透明板照亮不平坦表面的接触部分。 引出光学元件的不平坦表面图像抽出在透明板的不平坦表面接触部分上反射的光。 检测器通过光学元件检测从透明板引出的光。 被引入检测器的不平坦表面接触部分的面向投影部分反射的光从不平坦表面接触部分的面向凹部的反射的光的传播方向发散。 光学元件被布置成将由面向投射的部分反射的光引导到检测器中。

    Optical scanner using planar reflection holograms
    5.
    发明授权
    Optical scanner using planar reflection holograms 失效
    光学扫描仪采用平面反射全息图

    公开(公告)号：US5245170A

    公开(公告)日：1993-09-14

    申请号：US978509

    申请日：1992-11-18

    申请人： Hirokazu Aritake ,  Toshiyuki Ichikawa ,  Kozo Yamazaki ,  Fumio Yamagishi ,  Hiroyuki Ikeda

    发明人： Hirokazu Aritake ,  Toshiyuki Ichikawa ,  Kozo Yamazaki ,  Fumio Yamagishi ,  Hiroyuki Ikeda

    IPC分类号： G06K7/10

    CPC分类号： G06K7/10871 ,  G06K7/10663 ,  G06K7/10693

    摘要： An optical scanner suitable for use with a bar code reader includes a light source for generating a laser beam, a laser beam scanning device, a scanning pattern generating optical system, and a signal light condensing optical system for deflecting scattered signal light scattered by an object to be read to introduce the light to a photo-detector. The scanning pattern generating optical system or signal light condensing optical system includes strips of planar reflective holograms disposed substantially in parallel with each other in one plane to produce a reflection beam having an angle of reflection which is different from an angle of incidence of the laser beam thereon. Another embodiment discloses a condenser integrated with one of plane mirrors for deflecting the scan beam to form a hologram module of the reflection type. The scanner is a miniaturized apparatus as a result of the reflection holograms.

    摘要翻译： 适用于条形码读取器的光学扫描器包括用于产生激光束的光源，激光束扫描装置，扫描图形生成光学系统和用于偏转由物体散射的散射信号光的信号聚光光学系统 被读取以将光引入光电检测器。 扫描图形生成光学系统或信号聚光光学系统包括在一个平面中基本上彼此平行设置的平面反射全息图条，以产生具有不同于激光束的入射角的反射角的反射光束 上。 另一实施例公开了一种与平面镜之一集成的电容器，用于偏转扫描光束以形成反射型全息图模块。 扫描仪是作为反射全息图的结果的小型化装置。

    Method for detecting tracking error in optical disk system and its optical system devices thereof
    6.
    发明授权
    Method for detecting tracking error in optical disk system and its optical system devices thereof 失效
    光盘系统跟踪误差检测方法及其光学系统装置

    公开(公告)号：US5224082A

    公开(公告)日：1993-06-29

    申请号：US830753

    申请日：1992-02-06

    申请人： Kaneyuki Kurokawa ,  Masayuki Kato ,  Satoshi Maeda ,  Fumio Yamagishi ,  Hiroyuki Ikeda

    发明人： Kaneyuki Kurokawa ,  Masayuki Kato ,  Satoshi Maeda ,  Fumio Yamagishi ,  Hiroyuki Ikeda

    IPC分类号： G11B7/09

    CPC分类号： G11B7/09

    摘要： A method for detecting a tracking error in a process of tracking a groove track on a recording medium includes the steps of: irradiating a first light spot onto a groove track on a recording medium as a focused light beam for carrying out recording, reproducing, or erasing of information on the groove track of the recording medium; and irradiating a second and a third light spots onto an area around the groove track on the recording medium as focused light beams simultaneously with the irradiation of the first light spot, the second and third light spots are irradiated onto an area around the groove track on one side of the first light spot in a manner such that each of the second and third light spots covers both an inside and outside of the groove track.

    摘要翻译： 一种用于在跟踪记录介质上的凹槽轨道的过程中检测跟踪误差的方法包括以下步骤：将第一光斑照射到作为聚焦光束的记录介质上的凹槽轨道上，以执行记录，再现或 擦除记录介质凹槽轨迹上的信息; 并且将第二和第三光点照射到作为聚焦光束的记录介质上的凹槽轨道周围的区域上，同时照射第一光点，将第二和第三光斑照射到凹槽轨道周围的区域上 第一光点的一侧以使得第二和第三光斑中的每一个都覆盖凹槽轨道的内部和外部的方式。

    Beam scanner
    7.
    发明授权
    Beam scanner 失效
    光束扫描仪

    公开(公告)号：US4948213A

    公开(公告)日：1990-08-14

    申请号：US329327

    申请日：1989-03-27

    申请人： Shin-ya Hasegawa ,  Fumio Yamagishi ,  Hiroyuki Ikeda ,  Shigetake Iwata

    发明人： Shin-ya Hasegawa ,  Fumio Yamagishi ,  Hiroyuki Ikeda ,  Shigetake Iwata

    IPC分类号： G02B26/10

    CPC分类号： G02B26/106

    摘要： A light beam scanning apparatus includes a rotatable holographic disk having a hologram which is constructed by an interference of a reference wave and an objective wave, which is a coma wave, the coma wave having a focal length which decreases toward the outer periphery from the inner periphery of the holographic disk in a radial direction. The focal length has a different direction perpendicular to the radial direction, so that when the hologram of the holographic disk which rotates is reconstructed by a reconstruction wave, the scanning is effected by the beams diffracted by the hologram.

    Method and apparatus for light beam scanning using a hologram
    9.
    发明授权
    Method and apparatus for light beam scanning using a hologram 失效
    使用全息图进行光束扫描的方法和装置

    公开(公告)号：US4925262A

    公开(公告)日：1990-05-15

    申请号：US273624

    申请日：1988-11-17

    申请人： Fumio Yamagishi ,  Shinya Hasegawa ,  Hiroyuki Ikeda

    发明人： Fumio Yamagishi ,  Shinya Hasegawa ,  Hiroyuki Ikeda

    IPC分类号： G06K7/12 ,  G02B5/32 ,  G02B26/10 ,  G06K15/12 ,  H04N1/113

    CPC分类号： G06K15/1285 ,  G02B26/106

    摘要： A method for constructing a hologram on a transparent disk which includes two steps. First, irradiating a reference wave light beam having a diverging spherical wave front from a first point light source located at a predetermined distance on a center axis of the transparent disk. Second, irradiating an object wave light beam having a diverging spherical wave front from a second point light source located at a predetermined distance on a normal line away from a predetermined distance from the center axis. The result is interference between the reference wave light beam irradiated by the first point light source and the object wave light beam irradiated by the second point light source on the transparent disk and the formation of interference fringes having an extreme value of a spatial frequency as a hologram in one embodiment, a reconstruction beam is irradiated to the position, or in the vicinity of the extreme value.

    摘要翻译： 一种在透明盘上构造全息图的方法，包括两个步骤。 首先，从位于透明盘的中心轴上的预定距离的第一点光源照射具有发散的球面波前的参考波光束。 其次，从距离中心轴规定距离的法线上距预定距离的第二点光源照射具有发散球面波的物波光束。 结果是由第一点光源照射的参考波光束与由透明盘上的第二点光源照射的物体光束之间的干涉，以及具有空间频率的极值的干涉条纹的形成为 在一个实施例中，全息图将重建光束照射到极值的位置或附近。