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    • 5. 发明授权
    • Holographic recording and reconstructing apparatus and method
    • 全息记录和重建装置及方法
    • US07502151B2
    • 2009-03-10
    • US11388473
    • 2006-03-24
    • Mitsuru ToishiTomiji TanakaMikio Sugiki
    • Mitsuru ToishiTomiji TanakaMikio Sugiki
    • G03H1/02
    • G11B7/0065G11B7/00781G11B7/126
    • A holographic recording and reconstructing apparatus includes a light source having a variable oscillation wavelength; a temperature sensing unit operable to sense temperature; and a control unit operable to record information about a temperature sensed by the temperature sensing unit on a holographic recording medium during recording, to obtain the information about the temperature from the holographic recording medium and obtain a temperature sensed by the temperature sensing unit during reconstruction, to determine the amount of wavelength shift to counteract the effects of a change in the dimension of the holographic recording medium between recording and reconstruction based on the difference between the temperatures, and to shift the oscillation wavelength of the light source by the determined amount.
    • 全息记录和重建装置包括具有可变振荡波长的光源; 温度检测单元,其可操作以感测温度; 以及控制单元,其可操作以在记录期间在全息记录介质上记录关于由温度感测单元感测的温度的信息,以获得关于来自全息记录介质的温度的信息,并获得在重建期间由温度感测单元感测的温度, 确定波长偏移的量,以抵消在记录和重构之间的全息记录介质的尺寸变化的影响,基于温度之间的差异,并且将光源的振荡波长移动所确定的量。
    • 7. 发明申请
    • HOLOGRAPHIC RECONSTRUCTION APPARATUS, HOLOGRAPHIC RECORDING/RECONSTRUCTION APPARATUS, AND HOLOGRAPHIC RECONSTRUCTION METHOD
    • 全息重建装置,全息记录/重建装置和全息重建方法
    • US20070268538A1
    • 2007-11-22
    • US11749571
    • 2007-05-16
    • Koji IshiokaMikio SugikiAtsushi FukumotoMasaaki Hara
    • Koji IshiokaMikio SugikiAtsushi FukumotoMasaaki Hara
    • G03H1/10
    • G03H1/22G03H1/2286G11B7/005G11B7/0065G11B7/128
    • A holographic reconstruction apparatus is provided. The holographic reconstruction apparatus reconstructs recording data recorded on a holographic recording medium from diffracted light generated by emitting reference light from a laser light source to the holographic recording medium. The apparatus includes a spatial light modulator applying spatial modulation on a light beam to form a predetermined reference light pattern for generating the reference light; an array optical detector detecting the luminance of a reconstructed image generated by the diffracted light and generating reconstruction data based on the luminance; and a controller controlling the spatial light modulator to form, as the predetermined reference light pattern, a first reference light pattern and a second reference light pattern, which is a reversal of the first reference light pattern, and reconstructing the recording data on the basis of after-calculation reconstruction data according to a difference between first and second reconstruction data based on the first and second reference light patterns.
    • 提供全息重建装置。 全息重建装置从由激光光源发出的参考光产生的衍射光全息记录介质上,记录在全息记录介质上记录的数据。 该装置包括空间光调制器,其对光束施加空间调制以形成用于产生参考光的预定参考光图案; 阵列光学检测器,检测由衍射光产生的重建图像的亮度,并基于亮度生成重建数据; 以及控制所述空间光调制器的控制器,作为所述预定参考光图案,形成作为所述第一参考光图案的反转的第一参考光图案和第二参考光图案,并且基于 根据第一和第二参考光图案,根据第一和第二重建数据之间的差异来计算后重建数据。
    • 9. 发明授权
    • Hologram recording/reproducing device and recording/reproducing optical apparatus
    • 全息记录/再现装置和记录/再现光学装置
    • US07965607B2
    • 2011-06-21
    • US11520481
    • 2006-09-13
    • Atsushi FukumotoMikio SugikiKenji TanakaNaoto KojimaMitsuru Toishi
    • Atsushi FukumotoMikio SugikiKenji TanakaNaoto KojimaMitsuru Toishi
    • G11B7/0065G11B7/00
    • G11B7/1374G03H1/0465G03H1/12G03H2223/13G03H2223/17G03H2225/55G11B7/0065G11B7/00772
    • A hologram recording/reproducing device includes a recording/reproducing optical unit performing recording and reproducing operations on a hologram recording/reproducing medium. The optical unit includes a laser light source emitting laser light; a spatial-light modulator generating signal light and reference light from the laser light, the signal light and reference light having a common light path; a phase mask disposed near the modulator or in a conjugate plane of the modulator and transmitting at least the reference light; and an objective lens including a first lens portion and a second lens portion. The first lens portion is disposed at an inner peripheral portion of the objective lens and serves as a Fourier transformation lens focusing the signal light to a predetermined point. The second lens portion is disposed at an outer peripheral portion of the objective lens and has focuses continuously or discretely disposed in an optical-axis direction of the objective lens and at portions in the medium near the predetermined point.
    • 全息记录/再现装置包括在全息记录/再现介质上执行记录和再现操作的记录/再现光学单元。 光学单元包括发射激光的激光光源; 产生来自激光的信号光和参考光的空间光调制器,信号光和参考光具有公共光路; 设置在所述调制器附近或所述调制器的共轭平面中并且至少透射所述参考光的相位掩模; 以及包括第一透镜部分和第二透镜部分的物镜。 第一透镜部分设置在物镜的内周部分,并且用作将信号光聚焦到预定点的傅里叶变换透镜。 第二透镜部分设置在物镜的外周部分处,并且在物镜的光轴方向上以及介质中靠近预定点的部分连续地或离散地设置。
    • 10. 发明申请
    • Hologram recording/reproducing device and recording/reproducing optical apparatus
    • 全息记录/再现装置和记录/再现光学装置
    • US20070153663A1
    • 2007-07-05
    • US11520481
    • 2006-09-13
    • Atsushi FukumotoMikio SugikiKenji TanakaNaoto KojimaMitsuru Toishi
    • Atsushi FukumotoMikio SugikiKenji TanakaNaoto KojimaMitsuru Toishi
    • G11B7/00
    • G11B7/1374G03H1/0465G03H1/12G03H2223/13G03H2223/17G03H2225/55G11B7/0065G11B7/00772
    • A hologram recording/reproducing device includes a recording/reproducing optical unit performing recording and reproducing operations on a hologram recording/reproducing medium. The optical unit includes a laser light source emitting laser light; a spatial-light modulator generating signal light and reference light from the laser light, the signal light and reference light having a common light path; a phase mask disposed near the modulator or in a conjugate plane of the modulator and transmitting at least the reference light; and an objective lens including a first lens portion and a second lens portion. The first lens portion is disposed at an inner peripheral portion of the objective lens and serves as a Fourier transformation lens focusing the signal light to a predetermined point. The second lens portion is disposed at an outer peripheral portion of the objective lens and has focuses continuously or discretely disposed in an optical-axis direction of the objective lens and at portions in the medium near the predetermined point.
    • 全息记录/再现装置包括在全息记录/再现介质上执行记录和再现操作的记录/再现光学单元。 光学单元包括发射激光的激光光源; 产生来自激光的信号光和参考光的空间光调制器,信号光和参考光具有公共光路; 设置在所述调制器附近或所述调制器的共轭平面中并且至少透射所述参考光的相位掩模; 以及包括第一透镜部分和第二透镜部分的物镜。 第一透镜部分设置在物镜的内周部分,并且用作将信号光聚焦到预定点的傅里叶变换透镜。 第二透镜部分设置在物镜的外周部分处,并且在物镜的光轴方向上以及介质中靠近预定点的部分连续地或离散地设置。