公开(公告)号：US20110188367A1

公开(公告)日：2011-08-04

申请号：US13015984

申请日：2011-01-28

申请人： Soo Han PARK ,  Bong Gi KIM ,  Ichiro MORISHITA

发明人： Soo Han PARK ,  Bong Gi KIM ,  Ichiro MORISHITA

IPC分类号： G11B7/135

CPC分类号： G11B7/1353 ,  G11B7/1275 ,  G11B7/1376 ,  G11B2007/0006 ,  G11B2007/13727

摘要： An optical pickup includes a collimator lens having a diverging lens and a converging lens, such that it maintains a constant focal length and has a short optical path length. The collimator lens of the optical pickup device includes a diverging lens located at the side of a light source and a converging lens located at the side of generating parallel light or gentle oscillation light. In addition, the diverging lens and the converging lens of the collimator lens may be integrated, or may also be formed of a hologram optical element. As a result, the optical pickup device can be configured in the form of a slim structure using the collimator lens having a short optical path length.

摘要翻译： 光拾取器包括具有发散透镜和会聚透镜的准直透镜，使得其保持恒定的焦距并且具有短的光程长度。 光拾取装置的准直透镜包括位于光源侧的发散透镜和位于产生平行光或平缓振荡光的一侧的会聚透镜。 此外，准直透镜的发散透镜和会聚透镜可以一体化，或者也可以由全息光学元件形成。 结果，光拾取装置可以使用具有短的光路长度的准直透镜来构造成细长结构的形式。