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    • 5. 发明申请
    • OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE AND OPTICAL INFORMATION RECORDING/REPRODUCING METHOD
    • 光信息记录/再现设备和光信息记录/再现方法
    • US20150146511A1
    • 2015-05-28
    • US14533192
    • 2014-11-05
    • Hitachi-LG Data Storage, Inc.
    • Kouji FUJITA
    • G11B7/08G11B7/007G11B7/1353
    • G11B7/082G11B7/00772G11B7/083G11B7/08564G11B7/0956G11B7/1353
    • In an optical information recording/reproducing device that radiates signal light and reference light to a recording medium, forms a hologram, and records information and emits the reference light to the hologram of the recording medium and reproduces information, a laser light source that generates the signal light and the reference light; a light angle control unit that controls an angle of the reference light incident on the recording medium; a light detecting unit that detects diffracted light when the reference light is radiated; a positioning unit that allocates an address to the recording medium and performs positioning of the recording medium for the address; a tilt measuring unit that measures a tilt of the recording medium; and a control unit that controls the incidence angle of the reference light, on the basis of a tilt measurement result in a recording mode, in a reproduction mode, are included.
    • 在将信号光和参考光照射到记录介质的光学信息记录/再现装置中,形成全息图,并记录信息并将参考光发射到记录介质的全息图并再现信息;激光源, 信号灯和参考灯; 光角控制单元,其控制入射在记录介质上的参考光的角度; 光检测单元,其在参考光被照射时检测衍射光; 定位单元,其向所述记录介质分配地址并执行所述地址的记录介质的定位; 倾斜测量单元,其测量记录介质的倾斜度; 并且包括在再现模式中基于记录模式的倾斜测量结果来控制参考光的入射角的控制单元。
    • 7. 发明申请
    • DIGITAL HOLOGRAM DISPLAY DEVICE
    • 数字HOLOGRAM显示设备
    • US20140118508A1
    • 2014-05-01
    • US13949443
    • 2013-07-24
    • LG DISPLAY CO., LTD.
    • Minsung YOONSunwoo KIMMinyoung SHIN
    • G03H1/14
    • G03H1/02G02F1/292G03H1/0841G03H1/2294G03H2001/0224G03H2225/22G03H2225/32G11B7/0065G11B7/083H04N13/31
    • The present disclosure relates to a digital hologram display device displaying 3D image as a hologram by using a complex modulation. The digital hologram display device comprising a spatial light modulator including a first pixel outputting a first modulation light by modulating a phase of a first plane-polarized light and a second pixel outputting a second modulation light by modulating the phase of the first plane-polarized light, wherein the second pixel is adjacent to the first pixel; and a light combiner changing a path of the first modulation light outputted from the first pixel so that the path of the first modulation light corresponds to a path of the second modulation light outputted from the second pixel for combining the first modulation light with the second modulation light, wherein a phase of the first modulation light is different from a phase of the second modulation light.
    • 数字全息图显示装置技术领域本公开涉及通过使用复数调制来显示3D图像作为全息图的数字全息图显示装置。 数字全息图显示装置包括空间光调制器,该空间光调制器包括通过调制第一平面偏振光的相位而输出第一调制光的第一像素和通过调制第一平面偏振光的相位而输出第二调制光的第二像素 ,其中所述第二像素与所述第一像素相邻; 以及组合器,其改变从所述第一像素输出的所述第一调制光的路径,使得所述第一调制光的路径对应于从所述第二像素输出的所述第二调制光的路径,用于将所述第一调制光与所述第二调制 光,其中所述第一调制光的相位与所述第二调制光的相位不同。
    • 8. 发明授权
    • Optical information recording/reproducing apparatus and optical information reproducing apparatus
    • 光信息记录/再现装置和光信息再现装置
    • US08659982B2
    • 2014-02-25
    • US12961571
    • 2010-12-07
    • Hideharu MikamiHarukazu Miyamoto
    • Hideharu MikamiHarukazu Miyamoto
    • G11B20/00G11B7/00G11B7/135G11B27/36
    • G11B7/083G03H2001/0441G03H2210/562G11B7/00781G11B2007/00656
    • In a system of detecting an interference light with a light not irradiated onto an optical disc to increase the S/N ratio, it is difficult to stably acquire a reproduced signal with a simple configuration. Since the recording density is not improved, an improvement in transfer rate is difficult. In an optical information recording/reproducing apparatus where two optical beams face each other and are focused at the same place of a recording medium to record a standing wave developed by interference of the two optical beams, a phase difference of the two optical beams is modulated in a multiple stage and recorded. During reproduction, an interference light of a reproduced light from the recording medium and another reproduction reference light is detected as a reproduced signal, and a phase servo control stabilizing the phase of interference during reproduction by using a low frequency component of the reproduced signal is conducted.
    • 在利用未照射到光盘上的光来检测干涉光以提高S / N比的系统中,难以以简单的结构稳定地获取再生信号。 由于记录密度没有改善,传输速率的提高是困难的。 在其中两个光束彼此面对并聚焦在记录介质的相同位置以记录由两个光束的干涉产生的驻波的光信息记录/再现装置中,两个光束的相位差被调制 在多个阶段并记录下来。 在再现期间,检测来自记录介质的再现光的干涉光和另一个再现参考光作为再现信号,并且通过使用再现信号的低频分量来进行稳定再现期间的干扰相位的相位伺服控制 。