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    • 66. 发明授权
    • Optical recording device and optical recording and reproduction device
    • 光记录装置及光记录再生装置
    • US08050164B2
    • 2011-11-01
    • US12266285
    • 2008-11-06
    • Jiro MinabeYasuhiro Ogasawara
    • Jiro MinabeYasuhiro Ogasawara
    • G11B7/00
    • G11B7/1381G03H1/04G03H1/0465G03H2222/35G11B7/0065G11B7/1378
    • An optical recording device includes a light source, a spatial light modulator, a correcting optical system and a light guiding section. The spatial light modulator includes plural pixels, a signal light region that displays a signal light pattern, and a reference light region that displays a reference light pattern. The spatial light modulator modulates and outputs incident light for each pixel in accordance with a display pattern. The correcting optical system includes a pair of axicon lenses that correct the emitted light from the light source so as to flatten the light intensity distribution thereof on an irradiated surface of the spatial light modulator. The light guiding section guides the corrected light to the spatial light modulator. The signal light and the reference light are irradiated onto an optical recording medium simultaneously and a hologram is recorded into the optical recording medium.
    • 光记录装置包括光源,空间光调制器,校正光学系统和导光部。 空间光调制器包括多个像素,显示信号光图案的信号光区域和显示参考光图案的参考光区域。 空间光调制器根据显示图案调制并输出每个像素的入射光。 校正光学系统包括一对旋转透镜,其校正来自光源的发射光,以使其在空间光调制器的照射表面上的光强度分布变平。 导光部将校正后的光导向空间光调制器。 信号光和参考光同时照射到光学记录介质上,并将全息图记录到光学记录介质中。
    • 67. 发明申请
    • OPTICAL REPRODUCTION DEVICE, OPTICAL RECORDING/REPRODUCTION DEVICE, AND OPTICAL REPRODUCTION METHOD
    • 光学再现设备,光学记录/再现设备和光学再现方法
    • US20090231650A1
    • 2009-09-17
    • US12255013
    • 2008-10-21
    • Jiro MinabeYasuhiro Ogasawara
    • Jiro MinabeYasuhiro Ogasawara
    • G03H1/12
    • G11B7/0065G11B7/1353G11B7/1395
    • There is provided an optical reproduction device that reproduces a hologram that is recorded on an optical recording medium by interference between a signal light and a reference light coaxial to the signal light. The device has: a coherent light source; a light distribution unit distributing light from the light source, to a signal light optical path and a reference light optical path; a spatial light modulator that includes a signal light region and a reference light region, a spatial light modulator, a first irradiation optical system spatially separating light distributed to the reference light optical path and light distributed to the signal light optical path, making optical axes of both lights coincide, and irradiating the both lights onto the spatial light modulator; and a second irradiation optical system irradiating reference light onto the optical recording medium as reading light, and reproducing the hologram.
    • 提供了一种光学再现装置,其通过信号光和与信号光同轴的参考光之间的干涉再现记录在光学记录介质上的全息图。 该装置具有:相干光源; 配光单元,其将来自所述光源的光分配到信号光路和参考光路; 包括信号光区域和参考光区域的空间光调制器,空间光调制器,空间分离分配给参考光光路的光和分布到信号光光路的光的第一照射光学系统,使光轴 两个灯重合,并将两个光照射到空间光调制器上; 以及将参考光照射到光记录介质上作为读取光并再现全息图的第二照射光学系统。
    • 68. 发明授权
    • Optical reproduction device, optical recording/reproduction device, and optical reproduction method
    • 光学再现装置,光学记录/再现装置和光学再现方法
    • US07952975B2
    • 2011-05-31
    • US12255013
    • 2008-10-21
    • Jiro MinabeYasuhiro Ogasawara
    • Jiro MinabeYasuhiro Ogasawara
    • G11B7/00
    • G11B7/0065G11B7/1353G11B7/1395
    • There is provided an optical reproduction device that reproduces a hologram that is recorded on an optical recording medium by interference between a signal light and a reference light coaxial to the signal light. The device has: a coherent light source; a light distribution unit distributing light from the light source, to a signal light optical path and a reference light optical path; a spatial light modulator that includes a signal light region and a reference light region, a spatial light modulator, a first irradiation optical system spatially separating light distributed to the reference light optical path and light distributed to the signal light optical path, making optical axes of both lights coincide, and irradiating the both lights onto the spatial light modulator; and a second irradiation optical system irradiating reference light onto the optical recording medium as reading light, and reproducing the hologram.
    • 提供了一种光学再现装置,其通过信号光和与信号光同轴的参考光之间的干涉再现记录在光学记录介质上的全息图。 该装置具有:相干光源; 配光单元,其将来自所述光源的光分配到信号光路和参考光路; 包括信号光区域和参考光区域的空间光调制器,空间光调制器,空间分离分配给参考光光路的光和分布到信号光光路的光的第一照射光学系统,使光轴 两个灯重合,并将两个光照射到空间光调制器上; 以及将参考光照射到光记录介质上作为读取光并再现全息图的第二照射光学系统。