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.

公开(公告)号：US4938550A

公开(公告)日：1990-07-03

申请号：US151616

申请日：1988-02-02

申请人： Takefumi Inagaki ,  Fumio Yamagishi ,  Hiroyuki Ikeda ,  Shin-ya Hasegawa

发明人： Takefumi Inagaki ,  Fumio Yamagishi ,  Hiroyuki Ikeda ,  Shin-ya Hasegawa

IPC分类号： G02B5/32 ,  G02B26/08

CPC分类号： G02B5/32 ,  G02B26/0808

摘要： A holographic deflection device having a tunable laser, and at least one hologram for deflecting light incident thereupon from the tunable laser, so that the deflection of the light can be controlled by a change of the wavelength of the beam from the tunable laser.

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。

公开(公告)号：US4848862A

公开(公告)日：1989-07-18

申请号：US105571

申请日：1987-10-08

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

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

IPC分类号： G02B26/10 ,  G06K7/10 ,  G06K7/12

CPC分类号： G06K7/10871

摘要： A laser beam scanner comprising a scanning window through which scanning beams are emitted, a plurality of hologram layers constituting the scanning window, and an optical system for impinging a laser beam on the hologram layers in a manner such that the trace of the laser beam scanning each hologram layer intersets that of the other hologram layers on the scanning window.

摘要翻译： 一种激光束扫描器，包括扫描光束发射的扫描窗口，构成扫描窗口的多个全息图层以及用于以激光束扫描轨迹的方式将激光束照射在全息图层上的光学系统 每个全息图层与扫描窗口上的其它全息图层的相交。

公开(公告)号：US4647143A

公开(公告)日：1987-03-03

申请号：US596704

申请日：1984-04-04

申请人： Kozo Yamazaki ,  Fumio Yamagishi ,  Hiroyuki Ikeda ,  Hiroshi Watanuki ,  Mitsuharu Ishii ,  Ichiro Sebata ,  Takefumi Inagaki

发明人： Kozo Yamazaki ,  Fumio Yamagishi ,  Hiroyuki Ikeda ,  Hiroshi Watanuki ,  Mitsuharu Ishii ,  Ichiro Sebata ,  Takefumi Inagaki

IPC分类号： G06K7/12 ,  G02B26/10 ,  G06K7/10 ,  G02B26/08

CPC分类号： G06K7/10871

摘要： Light-beam scanning apparatus mainly used for a bar-code reader in a point-of-sale system to identify sold articles. The apparatus includes a light-beam emitting device, a hologram disk having a plurality of hologram segments with different diffraction characteristics mounted along its circumference and being rotated at a predetermined speed, and a deflecting device for directing the emitted light beam from the light-beam emitting device to one side of the hologram disk in a first direction. The scanning apparatus has a first mirror group including a plurality of mirrors placed in a second direction corresponding to the other side of the hologram disk, each of which mirrors is arranged to receive a diffracted light beam from a corresponding hologram segment, and a second mirror group including a plurality of mirrors, each of which mirrors is placed to receive a light beam reflected by a corresponding mirror of the first mirror group and to reflect the incident light beam to a predetermined space positioned in the first direction where an article attached with a bar-code label is moved. In the apparatus, a light path from the other side of the hologram disk to the predetermined space has a predetermined length to form a predetermined scanning light pattern in the space.

摘要翻译： 光束扫描装置主要用于销售点系统中的条形码阅读器，用于识别出售物品。 该装置包括光束发射装置，具有沿其圆周安装并以预定速度旋转的具有不同衍射特征的多个全息片段的全息图盘，以及用于引导来自光束的发射光束的偏转装置 发射器件沿着第一方向到达全息图盘的一侧。 该扫描装置具有第一反射镜组，该第一反射镜组包括放置在与全息图光盘的另一侧相对应的第二方向的多个反射镜，每个反射镜被配置为接收来自对应全息图部分的衍射光束，以及第二反射镜 其包括多个反射镜，每个反射镜被放置成接收由第一反射镜组的相应反射镜反射的光束，并将入射光束反射到位于第一方向上的预定空间， 条形码标签被移动。 在该装置中，从全息盘的另一侧到预定空间的光路具有预定的长度，以在该空间中形成预定的扫描光图案。