Invention Grant
- Patent Title: Optical information processor with prismatic correction of laser beam shape
- Patent Title (中): 光学信息处理器，棱镜校正激光束形状
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Application No.: US152297Application Date: 1980-05-22
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Publication No.: US4333173APublication Date: 1982-06-01
- Inventor: Seiji Yonezawa , Toshio Sugiyama , Masahiro Ojima
- Applicant: Seiji Yonezawa , Toshio Sugiyama , Masahiro Ojima
- Applicant Address: JPX Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JPX Tokyo
- Priority: JPX54-74664 19790615; JPX54-148846[U]JPX 19791029
- Main IPC: G02B13/10
- IPC: G02B13/10 ; G02B27/09 ; G11B7/09 ; G11B7/13 ; G11B7/135 ; G11B7/12
Abstract:
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.
Public/Granted literature
- US5383863A Attachment for maximum safety of hypodermic syringes Public/Granted day:1995-01-24
Information query
