发明名称 |
Optical information processor with prismatic correction of laser beam shape |
摘要 |
An optical information processor comprising a semiconductor laser device which has a rectangular light emitting region, a disk, and an optical system which includes a prism for converting a non-circular beam emergent from the laser device into a circular beam, the circular beam being projected onto the disk by the optical system thereby to record or play back predetermined information.
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申请公布号 |
US4333173(A) |
申请公布日期 |
1982.06.01 |
申请号 |
US19800152297 |
申请日期 |
1980.05.22 |
申请人 |
HITACHI, LTD. |
发明人 |
YONEZAWA, SEIJI;SUGIYAMA, TOSHIO;OJIMA, MASAHIRO |
分类号 |
G02B13/10;G02B27/09;G11B7/09;G11B7/13;G11B7/135;(IPC1-7):G11B7/12 |
主分类号 |
G02B13/10 |
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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