公开(公告)号：US20150279410A1

公开(公告)日：2015-10-01

申请号：US14627353

申请日：2015-02-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yohichi SAITOH ,  Hideki HAYASHI ,  Jun-ichi ASADA

IPC: G11B7/1392 ,  G11B7/003

CPC classification number: G11B7/13927 ,  G11B7/003 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/094 ,  G11B7/13 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1362 ,  G11B7/1381 ,  G11B7/14 ,  G11B7/24009 ,  G11B2007/0003

Abstract: An optical recording and playback apparatus o includes: a light source configured to emit a light beam; a tracking mirror configured to change a direction of the light beam; a collimator configured to form the light beam into a parallel light beam; an objective lens configured to collect the parallel light beam to the optical tape; a lens actuator configured to adjust a position of the objective lens in a focus direction of the optical tape and a position of the objective lens in a tracking direction of the optical tape; a polarization hologram plate configured to separate a reflected light beam of the light beam; a photodetector receiving elements configured to receive the plurality of light fluxes; and a control circuit configured to control the lens actuator and the tracking mirror. The tracking mirror is disposed near the light source, and movable in the tracking direction.

Abstract translation: 光学记录和重放装置o包括：被配置为发射光束的光源; 配置为改变光束的方向的跟踪反射镜; 准直器，被配置为将光束形成为平行光束; 配置成将平行光束收集到光带的物镜; 透镜致动器，被配置为调整所述物镜在所述光带的聚焦方向上的位置以及所述物镜在所述光带的跟踪方向上的位置; 被配置为分离光束的反射光束的偏振全息图板; 被配置为接收所述多个光束的光电检测器接收元件; 以及控制电路，被配置为控制透镜致动器和跟踪反射镜。 跟踪反射镜设置在光源附近，并可沿跟踪方向移动。