发明名称 PHOTO DETECTING DEVICE AND HOLOGRAPHIC DATA REPRODUCING APPARATUS FOR MULTILAYERED HOLOGRAPHIC DATA STORAGE MEDIUM
摘要 Provided are a photo detecting device and a holographic data reproducing apparatus for a multilayered holographic data storage medium using the photo detecting device. The holographic data reproducing apparatus, which can reproduce a large amount of information recorded in multiple layers of a holographic data storage medium, includes a focusing lens focusing a plurality reproducing signal beams generated when a reference beam is incident on the holographic data storage medium and having focal points formed at different locations on the same optical axis, a volume hologram device generating secondary signal beams which travel in different directions by diffracting a plurality of reproducing signal beams having different focal points, a fourier lens focusing the secondary signal beams generated from the volume hologram device, and an optical detector array detecting the secondary signal beams focused by the fourier lens.
申请公布号 US2008180768(A1) 申请公布日期 2008.07.31
申请号 US20070951569 申请日期 2007.12.06
申请人 SAMSUNG ELECTRONICS CO., LTD. 发明人 KIM JI-DEOG;YI JONG-SU
分类号 G03H1/26;G02B5/32;G11B7/135 主分类号 G03H1/26
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