发明授权
US5111447A Integral pick up for an optical digital disc using saw deflection and
lense
失效
使用表面偏光和透镜对光学数字光盘进行整合
- 专利标题: Integral pick up for an optical digital disc using saw deflection and lense
- 专利标题(中): 使用表面偏光和透镜对光学数字光盘进行整合
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申请号: US548203申请日: 1990-07-05
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公开(公告)号: US5111447A公开(公告)日: 1992-05-05
- 发明人: Tsukasa Yamashita , Nobuhisa Inoue , Mori Kazuhiko , Masaharu Matano , Isao Taguchi
- 申请人: Tsukasa Yamashita , Nobuhisa Inoue , Mori Kazuhiko , Masaharu Matano , Isao Taguchi
- 申请人地址: JPX Kyoto
- 专利权人: Omron Tateisi Electronics Co.
- 当前专利权人: Omron Tateisi Electronics Co.
- 当前专利权人地址: JPX Kyoto
- 优先权: JPX57-180257 19821014; JPX57-190645 19821029
- 主分类号: G11B7/085
- IPC分类号: G11B7/085 ; G11B7/09 ; G11B7/12
摘要:
A photo-pickup wherein a light emitting portion, a surface acoustic wave generating portion, a lens portion, a light receiving portion and a control portion are integrally integrated on a base plate formed on its surface with a light transmission path. The light emitting portion propagates a light beam to the light transmission path. The light beam propagating in the light transmission path is first deflected within a plane of the light transmission path by surface acoustic wave propagating on the light transmission path and propagated towards the lens portion. The lens portion is provided to project the light beam outside from the light transmission path and effect two-dimentional focusing of the projected beam and adjustment of focal position. The light receiving portion comprises a combination of a plurality of light receiving elements disposed at suitable intervals from the projected position of the light beam to receive a reflected light of the light beam. The control portion is provided to receive an output of the light receiving portion to process a signal and supply said control signal to the surface acoustic wave generating portion and lens portion, thereby effecting the control of deflection angle of the light beam, two-dimensional focusing of the projected beam and control of focal position.
公开/授权文献
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