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12 条记录 (耗时 0.013 秒)

    Laser beam scanner and its fabricating method
    2.
    发明公开
    Laser beam scanner and its fabricating method 失效
    激光束扫描仪及其制作方法

    公开(公告)号：EP0214018A3

    公开(公告)日：1989-06-07

    申请号：EP86401720.7

    申请日：1986-07-31

    申请人： FUJITSU LIMITED

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

    IPC分类号： G02B26/10 ,  G02B5/32

    CPC分类号： G02B26/106 ,  Y10S359/90

    摘要： There is provided a laser beam scanner comprising a beam source (563) for generating a semiconductor laser beam (565): a rotary hologram (721) for diffracting the semiconductor laser beam (565) to form a scanning beam (567) on a surface (564) to be scanned ; and an aberration correcting stationary hologram (561) disposed between the beam source (563) and the rotary hologram (721). wherein the stationary hologram (561) is constructed with an object wave and a reference wave being interfered on a stationary hologram substrate subject that an aberration of the scanning beam (567) on the surface to be scanned shall be corrected, the object wave being a spherical wave having an aberration, a wavelength shorter than that of the semiconductor laser beam (565). and an incident angle which is not vertical but inclined with respect to the stationary hologram substrate.

    Laser beam scanner and its fabricating method
    4.
    发明公开
    Laser beam scanner and its fabricating method 失效
    Laserstrahlscanner und Herstellungsverfahren。

    公开(公告)号：EP0214018A2

    公开(公告)日：1987-03-11

    申请号：EP86401720.7

    申请日：1986-07-31

    申请人： FUJITSU LIMITED

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

    IPC分类号： G02B26/10 ,  G02B5/32

    CPC分类号： G02B26/106 ,  Y10S359/90

    摘要： There is provided a laser beam scanner comprising a beam source (563) for generating a semiconductor laser beam (565): a rotary hologram (721) for diffracting the semiconductor laser beam (565) to form a scanning beam (567) on a surface (564) to be scanned ; and an aberration correcting stationary hologram (561) disposed between the beam source (563) and the rotary hologram (721). wherein the stationary hologram (561) is constructed with an object wave and a reference wave being interfered on a stationary hologram substrate subject that an aberration of the scanning beam (567) on the surface to be scanned shall be corrected, the object wave being a spherical wave having an aberration, a wavelength shorter than that of the semiconductor laser beam (565). and an incident angle which is not vertical but inclined with respect to the stationary hologram substrate.

    摘要翻译： 提供了一种激光束扫描器，其包括用于产生半导体激光束（565）的光束源（563）; 用于衍射半导体激光束（565）以在待扫描的表面（564）上形成扫描光束（567）的旋转全息图（721） 以及设置在光束源（563）和旋转全息图（721）之间的像差校正固定全息图（561），其中固定全息图（561）由对象波和参考波构成，固定的全息图基板对象 要扫描的表面上的扫描光束（567）的象差应被校正，对象波是具有比半导体激光束（565）短的波长的像差的球面波，以及入射角 不是垂直的，而是相对于静止的全息图衬底倾斜。

    Optical pickup
    5.
    发明公开
    Optical pickup 失效
    光学扫描设备。

    公开(公告)号：EP0195657A2

    公开(公告)日：1986-09-24

    申请号：EP86301994.9

    申请日：1986-03-19

    申请人： FUJITSU LIMITED

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

    IPC分类号： G11B7/135

    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 medium, such as an optical diskette, comprises a light source (11) for irradiating a light beam (L,) onto an optical diskette (D), an optical sensor (15) for detecting a light beam (L 10 ) reflected from the optical diskette, and an optical system including a wave plate and two hologram lenses (12,13). The first hologram lens (13) diffracts the light beam (L 7 ) from the light source, and the second hologram lens (12) transmits the same light beam (L 7 ). On the other hand, the second hologram lens (12) diffracts the reflected light beam (L 10 ) from the optical diskette (D) towards the optical sensor (15), and the first hologram lens (13) transmits the same reflected light beam. (L 10 ). The light and compact- sized hologram lenses (12,13) enable a reduction in the access time to the optical diskette (D).
    A hologram lens assembly, suitable for use in an optical pickup, is also disclosed.

    Beam scanner
    8.
    发明公开
    Beam scanner 失效
    光束扫描仪

    公开(公告)号：EP0334631A3

    公开(公告)日：1991-07-24

    申请号：EP89302835.7

    申请日：1989-03-22

    申请人： FUJITSU LIMITED

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

    IPC分类号： G02B26/10 ,  G02B5/32

    CPC分类号： G02B26/106

    摘要： A light beam scanning apparatus comprising a rotatable holographic disk (4) having a hologram which is constructed by an interference of a reference wave (13) and an object wave (9), 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 (4). 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.

    Beam scanner
    10.
    发明公开
    Beam scanner 失效
    光束扫描仪

    公开(公告)号：EP0334631A2

    公开(公告)日：1989-09-27

    申请号：EP89302835.7

    申请日：1989-03-22

    申请人： FUJITSU LIMITED

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

    IPC分类号： G02B26/10 ,  G02B5/32

    CPC分类号： G02B26/106

    摘要： A light beam scanning apparatus comprising a rotatable holographic disk (4) having a hologram which is constructed by an interference of a reference wave (13) and an object wave (9), 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 (4). 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.

    摘要翻译： 一种光束扫描装置，其特征在于，包括：具有由参考波（13）和作为彗形波的物波（9）的干涉而构成的全息图的可旋转全息盘（4），所述彗形波具有焦距 其从全息光盘的内周沿着径向方向（4）朝外周边减小。 焦距具有与径向垂直的不同方向，从而当旋转的全息盘的全息图由重建波重建时，扫描受到由全息图衍射的光束的影响。