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公开(公告)号：US4957336A
公开(公告)日：1990-09-18
申请号：US269412
申请日：1988-11-10
IPC分类号： G02B26/10
CPC分类号： G02B26/106 , Y10S359/90
摘要： A high precision laser beam scanner is provided which is able to shape a beam generated by a laser, suppress the influence of jitter of a scanning beam due to mode hopping of a semiconductor laser, and reduce aberration of the scanning beam. A beam source generates a semiconductor laser beam, which is diffracted by a rotary hologram, forming a scanning beam on a surface to be scanned. An aberration correcting stationary hologram is disposed between the beam source and the rotary hologram. The stationary hologram is constructed with an object wave and a reference wave, which interfere on a stationary hologram substrate subject so that an aberration of the scanning beam on the surface to be scanned shall be corrected. The object wave is a spherical wave which has an aberration, a wave length shorter than that of the semiconductor laser beam, and an incident angle which is not vertical but is inclined with respect to the stationary hologram substrate. A method for fabricating the laser beam scanner is also provided.
摘要翻译： 提供了能够对由激光产生的光束进行成形的高精度激光束扫描器，抑制由于半导体激光器的跳跃而导致的扫描光束的抖动的影响，并且减小扫描光束的像差。 光束源产生通过旋转全息图衍射的半导体激光束，在要扫描的表面上形成扫描光束。 像差校正固定全息图设置在光束源和旋转全息图之间。 固定全息图由对象波和参考波构成，其干涉固定的全息图基板对象，使得要扫描的表面上的扫描光束的像差被校正。 对象波是具有像差，波长短于半导体激光束的像差的球面波，并且不是垂直但相对于静止全息图基板倾斜的入射角。 还提供了一种用于制造激光束扫描器的方法。
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公开(公告)号：US4824191A
公开(公告)日：1989-04-25
申请号：US173050
申请日：1988-03-28
CPC分类号： G11B7/1353 , G02B5/32 , G11B7/08547 , G11B7/1372
摘要： An optical pickup for reading out information from an information recording media, such as an optical diskette, comprises a light source for irradiating light beam onto an optical diskette, an optical sensor for detecting the light beam reflected at the optical diskette, and an optical system including a wave plate and two hologram lenses. The first hologram lens diffracts the light beam from the light source, and the second hologram lens transmits the same light beam. On the other hand, the second hologram lens diffracts the reflected light beam from the optical diskette toward the optical sensor, and the first hologram lens transmits the same reflected light beam.
摘要翻译： 用于从诸如光盘的信息记录介质读出信息的光学拾取器包括用于将光束照射到光盘上的光源，用于检测在光盘上反射的光束的光学传感器，以及光学系统 包括波片和两个全息图透镜。 第一全息透镜衍射来自光源的光束，第二全息透镜透射相同的光束。 另一方面，第二全息图透镜将来自光盘的反射光衍射到光学传感器，并且第一全息透镜透射相同的反射光束。
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公开(公告)号：US4938550A
公开(公告)日：1990-07-03
申请号：US151616
申请日：1988-02-02
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.
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公开(公告)号：US4655541A
公开(公告)日：1987-04-07
申请号：US675870
申请日：1984-11-28
申请人： Kozo Yamazaki , Fumio Yamagishi , Hiroyuki Ikeda , Takefumi Inagaki , Ichiro Sebata , Shunji Kitagawa , Masayuki Kato , Toshiyuki Ichikawa
发明人： Kozo Yamazaki , Fumio Yamagishi , Hiroyuki Ikeda , Takefumi Inagaki , Ichiro Sebata , Shunji Kitagawa , Masayuki Kato , Toshiyuki Ichikawa
CPC分类号： G06K7/10871 , G02B26/106
摘要： A hologram scanner includes a laser source, a rotary body having a rotational axis at least one hologram facet arranged on the rotary body for diffracting a laser beam from the laser source to scan an object and receive the scattered light from the object for detection thereof, a motor means for driving the rotary body, and an optical detector for detecting the scattered light received and diffracted by the hologram facet. The hologram facet is inclined with respect to the rotational axis of the rotary body.
摘要翻译： 全息扫描器包括激光源，旋转体，旋转体具有设置在旋转体上的至少一个全息面，用于衍射来自激光源的激光束扫描物体并接收来自物体的散射光进行检测， 用于驱动旋转体的马达装置和用于检测由全息图面接收和衍射的散射光的光学检测器。 全息小面相对于旋转体的旋转轴线倾斜。
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公开(公告)号：US4968108A
公开(公告)日：1990-11-06
申请号：US356679
申请日：1989-05-24
CPC分类号： G02B5/32 , G03H1/00 , G03H1/0005 , G03H2001/0413 , G03H2001/186 , G03H2001/2234
摘要： A method for constructing and reconstructing a hologram. The hologram is constructed by irradiating two construction beams having different incidence angles onto a hologram record medium to form interference fringe patterns therein. The hologram is reconstructed by irradiating a reconstruction beam onto the interference fringe patterns so as to diffract the reconstruction beam in accordance with the interference fringe patterns. At least one of the two construction beams irradiates the hologram record medium through at least one optical deviation element. The incidence angle of the reconstruction beam is different from that of each construction beam and is arranged to be nearly a Bragg angle at any point of the hologram.
摘要翻译： 一种构造和重建全息图的方法。 通过将具有不同入射角的两个结构光束照射到全息图记录介质上以在其中形成干涉条纹图案来构造全息图。 通过将重建光束照射到干涉条纹图案上来重建全息图，以便根据干涉条纹图案衍射重建光束。 两个构造束中的至少一个通过至少一个光学偏差元件照射全息图记录介质。 重建梁的入射角不同于每个结构梁的入射角，并且被布置成在全息图的任何点处几乎是布拉格角。
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6.发明授权Optical system with grating lens assembly for correcting wavelength aberrations 失效具有用于校正波长像差的光栅透镜组件的光学系统
公开(公告)号：US4832464A
公开(公告)日：1989-05-23
申请号：US98532
申请日：1987-09-18
CPC分类号： G11B7/1353 , G02B5/32 , G11B7/1372
摘要： An optical system having a grating lens assembly including a first grating lens which diffracts rays of a beam incident thereupon so as to provide non-parallel diffraction rays and a second grating lens which converges the non-parallel diffraction rays at a predetermined point substantially without aberration.
摘要翻译： 一种具有光栅透镜组件的光学系统，包括：第一光栅透镜，衍射入射到其上的光束，以提供不平行的衍射光线;以及第二光栅透镜，其将非平行衍射光线在基本上不具有像差 。
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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
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。
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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
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。
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公开(公告)号：US4904033A
公开(公告)日：1990-02-27
申请号：US196754
申请日：1988-05-18
申请人： Hiroyuki Ikeda , Fumio Yamagishi , Shinya Hasegawa , Syunji Kitagawa , Kozo Yamazaki , Takefumi Inagaki
发明人： Hiroyuki Ikeda , Fumio Yamagishi , Shinya Hasegawa , Syunji Kitagawa , Kozo Yamazaki , Takefumi Inagaki
CPC分类号： G03H1/0248 , G03H1/202 , G03H1/0005 , G03H1/265 , G03H2001/205 , G03H2001/2615 , G03H2222/36 , G03H2250/12 , Y10S359/90
摘要： A method for constructing a hologram by use of a master hologram which includes a predetermined pattern of interference fringes formed thereon by optical interference of a plurality of constructing coherent light beams incident at different angles. The method includes preparing a photosensitive medium, in which the hologram is to be formed, on the master hologram, and copying the master hologram onto the photo-sensitive medium by impinging copying light beams onto the master hologram at an incident angle different from the angles of the constructing beams.
摘要翻译： 一种通过使用主全息图构成全息图的方法，该主全息图包括通过以不同角度入射的多个构成相干光束的光学干涉在其上形成的干涉条纹的预定图案。 该方法包括在主全息图上制备其中要形成全息图的光敏介质，并通过以不同于角度的入射角照射到主全息图上来将主全息图复制到光敏介质上 的构造梁。
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公开(公告)号：US4810046A
公开(公告)日：1989-03-07
申请号：US120727
申请日：1987-11-16
CPC分类号： G06K15/1285 , G02B26/106
摘要： In a light beam scanning apparatus using a hologram rotator, a post-hologram is provided for further diffracting a light beam diffracted by the hologram rotator to a direction opposite to that of the direction in which the light beam is diffracted by the hologram rotator. By combining the kinds of wave fronts used for forming the holograms of the holograms rotator and the post-hologram, the light beam scanning apparatus reduces the deviation of the light beam scanning position caused by the mode hopping of a laser diode, and an improved linear scanning of the light beam and/or image focusing characteristic is obtained.
摘要翻译： 在使用全息图旋转器的光束扫描装置中，提供后全息图，用于进一步将由全息图旋转器衍射的光束衍射到与通过全息图旋转器衍射光束的方向相反的方向。 通过组合用于形成全息图旋转器的全息图和后全息图的波前的种类，光束扫描装置减少了由激光二极管的模式跳变引起的光束扫描位置的偏差，并且改善的线性 获得光束的扫描和/或图像聚焦特性。
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