发明授权
- 专利标题： Optical system for optical information recording/reproducing apparatus having a galvano mirror
- 专利标题（中）： 具有电流镜的光学信息记录/再现装置的光学系统
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申请号： US242048申请日： 1994-05-13
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公开(公告)号： US5420848A公开(公告)日： 1995-05-30
- 发明人: Nobuaki Date , Kazuhiko Matsuoka , Kenichi Sasaki
- 申请人： Nobuaki Date , Kazuhiko Matsuoka , Kenichi Sasaki
- 申请人地址： JPX Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX2-203963 19900802; JPX2-203964 19900802; JPX3-025090 19910128; JPX3-194932 19910709; JPX3-173949 19910715
- 主分类号： G11B7/085
- IPC分类号： G11B7/085 ; G11B7/125 ; G11B7/00
摘要：
An optical system for an optical information recording/reproduction apparatus, includes a light source, an objective lens for focusing a light beam from the light source on a recording medium, a beam splitter arranged between the light source and the objective lens, a detector for detecting a light beam split by the beam splitter, a galvano mirror arranged between the objective lens and the beam splitter, the galvano mirror having an opening, and a sensor for receiving the light beam from the light source via the opening.
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