公开(公告)号：US5550779A

公开(公告)日：1996-08-27

申请号：US326783

申请日：1994-10-20

申请人： Geofrrey W. Burr ,  Fai H. Mok ,  Demetri Psaltis

发明人： Geofrrey W. Burr ,  Fai H. Mok ,  Demetri Psaltis

IPC分类号： G11B7/0065 ,  G11C13/04 ,  G11C7/00

CPC分类号： G11B7/0065 ,  G11C13/042

摘要： The invention is embodied in an optical memory having a holographic recording medium capable of storing respective holograms in respective storage spots, the memory including a coherent collimated reference beam and an information-bearing object beam illuminating the recording medium, a segmented optical array including a stack of plural segmented optical sub-arrays, each of the segmented optical sub-arrays including an array of generally parallel optical strips, each optical strip having a strip length extending parallel to the optical strips, respective optical strips of all of the sub-arrays providing an optical path for the reference beam to respective recording spots in the holographic recording medium whenever the reference beam is incident within the strip length, two optical strips in different sub-arrays with optical paths to the same recording spot being separated by at least an out-of-plane multiplexing difference angle subtended by paths of the reference beam to the two optical strips, a reference beam steering apparatus for scanning the reference beam to different locations on the segmented optical array, and a modulator apparatus for modulating the object beam with a succession of input patterns simultaneously with the scanning of the reference beam by the reference beam steering apparatus so as to record a plurality of angle multiplexed and out-of-plane multiplexed holograms in at least one of the recording spots. Each of the sub-arrays corresponds to a different out-of-plane multiplexing angle of the reference beam.

摘要翻译： 本发明体现在具有全息记录介质的光学存储器中，该全息记录介质能够将相应的全息图存储在相应的存储点中，存储器包括相干准直参考光束和照射记录介质的信息承载物体光束，包括堆叠的分段光学阵列 多个分段光学子阵列中的每个分段光学子阵列包括大致平行的光学条带的阵列，每个光学条具有平行于光学条带延伸的条带长度，所有子阵列的相应光学条带提供 每当参考光束入射到条带长度内时，参考光束到全息记录介质中的相应记录点的光路，在具有到相同记录光点的光路的不同子阵列中的两个光学条带被至少一个外部 由参考光束的路径对向到两个选择的面间复用差分角度 用于将参考光束扫描到分段光学阵列上的不同位置的参考光束转向装置，以及用于通过参考光束转向与参考光束的扫描同时用一系列输入图案调制物体光束的调制器装置 装置，以便在至少一个记录点中记录多个角度多路复用和面外复用全息图。 每个子阵列对应于参考光束的不同的平面外多路复用角。