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    • 54. 发明授权
    • Hologram recording device
    • 全息记录装置
    • US07719734B2
    • 2010-05-18
    • US12356992
    • 2009-01-21
    • Kazushi UnoKoichi TezukaHiroyasu Yoshikawa
    • Kazushi UnoKoichi TezukaHiroyasu Yoshikawa
    • G03H1/00
    • G11B7/1374G03H1/04G03H2240/51G03H2240/52G11B7/0065G11B7/1392
    • A hologram recording device records holograms by interference between an recording beam and a reference beam. The device includes an objective lens exhibiting a predetermined aberration. It is supposed that the laser beam applied to the beam splitter has an light intensity of 1, the recording beam and the reference beam emitted from the beam splitter have light intensities of P and 1−P, respectively, the optical magnification for the recording beam traveling from the beam splitter to the objective lens is a, and N pixels are used for modulation of the recording beam in the spatial light modulator. When the recording beam at the predetermined region has an amplitude 1/k times the amplitude of the reference beam, and the amplitude of the recording beam is X times as great as when there is no aberration, the predetermined aberration of the objective lens is determined to satisfy the formula: 0
    • 全息记录装置通过记录光束和参考光束之间的干涉来记录全息图。 该装置包括具有预定像差的物镜。 假设施加到分束器的激光束的光强度为1,从分束器发射的记录光束和参考光束分别具有P和1-P的光强度,记录光束的光学倍率 从分束器传播到物镜是a,并且N个像素用于调制空间光调制器中的记录光束。 当预定区域的记录光束具有参考光束的振幅的1 / k倍的幅度,并且记录光束的幅度是当不存在像差时的X倍,所以确定物镜的预定像差 以满足公式:0
    • 57. 发明申请
    • HOLOGRAM RECORDING/REPRODUCING DEVICE, HOLOGRAM RECORDING/REPRODUCING METHOD, AND HOLOGRAM RECORDING MEDIUM
    • HOLOGRAM记录/再现设备,HOLOGRAM记录/再现方法和HOLOGRAM记录介质
    • US20090279153A1
    • 2009-11-12
    • US12507643
    • 2009-07-22
    • Yasumasa IwamuraKoichi TezukaHiroyasu YoshikawaKazushi UnoYuzuru Yamakage
    • Yasumasa IwamuraKoichi TezukaHiroyasu YoshikawaKazushi UnoYuzuru Yamakage
    • G03H1/26
    • G11B7/0065G11B7/00781
    • The hologram recording/reproducing apparatus is for recording a hologram by emitting a recording beam (S) modulated by a spatial light modulator and a reference beam (R) having a same wavelength as the recording beam onto a hologram recording medium (B) so that the beams overlap each other with polarization direction (p) of the beams being matched to interfere with each other, and for reproducing the hologram by exposing the hologram recording medium storing the hologram to the reference beam to generate diffracted light and receiving the diffracted light by an imaging device. The spatial light modulator is controlled so as to form a data area (H0) corresponding to information to be recorded and a plurality of mark areas (H1) for detecting a position of the data area in the hologram recording medium (B) in recording of the hologram. The mark areas (H1) are formed at positions not to be overlapped by a beam scattering region which may be generated along a polarizing direction (p) of the reference beam on an outward side of the data area (H0).
    • 全息记录/再现装置用于通过将由空间光调制器调制的记录光束(S)和与记录光束具有相同波长的参考光束(R)发射到全息图记录介质(B)上来记录全息图,使得 光束彼此重叠,偏振方向(p)相互干扰,并且通过将存储全息图的全息图记录介质曝光到参考光束以再现全息图,以产生衍射光并通过以下方式接收衍射光 成像装置。 控制空间光调制器以形成对应于要记录的信息的数据区域(H0)和用于在记录中检测全息图记录介质(B)中的数据区域的位置的多个标记区域(H1) 全息图。 标记区域(H1)形成在与数据区域(H0)的外侧上的参考光束的偏振方向(p)不同的光束散射区域不重叠的位置处。
    • 58. 发明申请
    • HOLOGRAM RECORDING DEVICE AND HOLOGRAM RECORDING METHOD
    • HOLOGRAM记录装置和HOLOGRAM记录方法
    • US20090122374A1
    • 2009-05-14
    • US12270614
    • 2008-11-13
    • Kazushi UnoKouichi TezukaHiroyasu YoshikawaYasumasa IwamuraYuzuru Yamakage
    • Kazushi UnoKouichi TezukaHiroyasu YoshikawaYasumasa IwamuraYuzuru Yamakage
    • G03H1/04
    • G03H1/04G03H1/0465G03H1/265G03H2222/35G11B7/0065G11B7/00772G11B7/08564G11B7/128G11B7/1392
    • A hologram recorder (A) records a hologram in a hologram recording medium (B) by interference of a recording beam (S) irradiated at a predetermined incident angle to the medium (B) via a spatial light modulator (2) incliningly in a predetermined direction with a reference beam (R) irradiated incliningly in an opposite direction to the recording beam (S) so that the beams (S,R) crosses at a predetermined crossing angle. The recorder includes a beam modulator (1) for converting a Gaussian-beam having a Gaussian-distribution of intensity into a parallel beam having an intensity distribution tending to be uniform and allowing the parallel beam to travel to the spatial modulator (2) as the recording beam (S). The Gaussian-beam has a center axis (Gs) decentered from an optical axis (1A) of the beam modulator (1) in a decentering direction including a directional component of the predetermined direction in which the recording beam (S) is inclined or an opposite directional component thereto.
    • 全息记录器(A)通过经由空间光调制器(2)以预定的角度倾斜地以预定的入射角照射到记录介质(B)的记录光束(S),将全息图记录在全息记录介质(B)中 方向与以与记录光束(S)相反的方向倾斜地照射的参考光束(R),使得光束(S,R)以预定的交叉角度交叉。 记录器包括用于将具有强度的高斯分布的高斯光束转换成具有趋于均匀的强度分布的并行光束的光束调制器(1),并且允许并行光束作为所述空间调制器(2)行进到空间调制器 记录光束(S)。 高斯光束具有从波束调制器(1)的光轴(1A)偏心的中心轴(Gs),该偏心方向包括记录光束(S)倾斜的预定方向的方向分量或 与其相反的方向分量。
    • 60. 发明申请
    • Hologram recording device
    • 全息记录装置
    • US20070263268A1
    • 2007-11-15
    • US11880129
    • 2007-07-20
    • Hiroyasu YoshikawaKouichi TezukaKazushi Uno
    • Hiroyasu YoshikawaKouichi TezukaKazushi Uno
    • G03H1/10
    • G03H1/0404G03H1/0402G03H2001/0415G03H2223/13G03H2223/17G03H2225/24G03H2250/42G11B7/0065G11B7/1395G11C13/042
    • A hologram recorder A1 includes a light source (1) of a coherent light beam and a spatial light modulator (5A) for modulating a part of the light beam from the light source (1) into a recording beam which carries two-dimensional information. Another part of the light beam is used as a reference beam to interfere with the recording beam. The recording beam and the reference beam are directed to a hologram recording medium (B). A semi-translucent optical device (4) is disposed between the light source (1) and the spatial light modulator (SA) for letting a part of the beam travel to the spatial light modulator (5A) as a transmitted beam while letting another part of the beam travel to the hologram recording medium (B) as a reflected beam. The recording beam and the reference beam, after being separated from each other by the optical device (4) as the transmitted beam and the reflected beam, travel along the same optical path (L) to irradiate the hologram recording medium (B).
    • 全息记录器A 1包括相干光束的光源(1)和用于将来自光源(1)的光束的一部分调制成记录光束的空间光调制器(5A),该记录光束携带二维 信息。 光束的另一部分被用作参考光束以干涉记录光束。 记录光束和参考光束被引导到全息记录介质(B)。 半光半导体光学器件(4)设置在光源(1)和空间光调制器(SA)之间,用于使一部分光束作为透射光束行进到空间光调制器(5A),同时让另一个 光束的一部分作为反射光束行进到全息图记录介质(B)。 记录光束和参考光束在作为透射光束和反射光束的光学装置(4)彼此分离之后,沿着相同的光路(L)行进以照射全息图记录介质(B)。