发明名称 |
Holographic memory and optical information recording and reproducing apparatus using the same |
摘要 |
A description is provided of an optical information recording and reproducing apparatus employing a holographic memory. The apparatus includes a mask disposed in an optical path of the signal light beam so as to cover a light intensity distribution of the signal light beam incident into the holographic memory at nearly a half portion thereof with respect to the center of the distribution of the zeroth-order diffracted light of the signal light beam. The center of a region of the holographic memory where the signal light beam and the reference light beam intersect with each other, is shifted by a distance substantially equal to twice the distance between peaks of the zeroth-order diffracted light or the first-order diffracted light of the signal light beam.
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申请公布号 |
US2002008889(A1) |
申请公布日期 |
2002.01.24 |
申请号 |
US20010925488 |
申请日期 |
2001.08.10 |
申请人 |
PIONEER CORPORATION, A JAPANESE CORPORATION |
发明人 |
TANAKA SATORU;KOUNO TOMOMITSU;HATANO HIDEKI;ITOH YOSHIHISA;MATSUSHITA HAJIME;YAMAJI TAKASHI |
分类号 |
G11B7/00;G03H1/10;G03H1/26;G11B7/0025;G11B7/0065;(IPC1-7):G03H1/00;G03H1/22 |
主分类号 |
G11B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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