发明授权
- 专利标题： Disc drive apparatus that positions an objective lens within a disc cartridge at the time when the disc is rotated
- 专利标题（中）： 光盘驱动装置，其在盘旋转时将物镜定位在盘盒内
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申请号： US923968申请日： 1992-09-14
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公开(公告)号： US5357498A公开(公告)日： 1994-10-18
- 发明人: Tadao Yoshida , Hirotoshi Fujisawa
- 申请人： Tadao Yoshida , Hirotoshi Fujisawa
- 申请人地址： JPX Tokyo
- 专利权人： Sony Corporation
- 当前专利权人： Sony Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX3-025569 19910125
- 主分类号： G11B7/085
- IPC分类号： G11B7/085 ; G11B7/0037 ; G11B23/03
摘要：
A recording and/or reproducing apparatus is disclosed in which informational signals are recorded and/or reproduced by irradiating an optical disc 202 with a light beam from an optical pick-up device 1 through an recording and/or reproducing opening 205 which is formed in a disc cartridge 202 which rotatably houses an optical disc 203. The optical pick-up device 1 which is used for the recording and/or reproducing apparatus comprises a light source and an objective lens 5 for converging the light beam from the light source upon the signal recording area of the optical disc 203. When recording and/or reproducing of informational signal on and/or from the optical disc 203 is performed by the optical pick-up device 1, only the objective lens 5 is moved into the disc cartridge 202 via the recording and/or reproducing opening 205 formed on the disc cartridge 202 to shorten the distance between the objective lens 5 of the optical pick-up device 1 and the disc 203.
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