Optical element feeding device and optical pickup unit using...

Details Optical element feeding device and optical pickup unit using... Optical element feeding device and optical pickup unit using...

2011-08-09

2011-08-09

Haley, Joseph (Department: 2627)

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

C369S044140, C369S044150, C369S044170, C369S044210, C369S044290, C369S044320, C369S044240, C369S053250

Reexamination Certificate

active

07995450

ABSTRACT:
In an optical element feeding device and an optical pickup unit using the same, in order to make the device compact and light and achieve a stable operation, the device has a main shaft and a sub shaft supporting a movable frame in which an optical element is arranged in such a manner as to be movable in a direction of an optical axis, a stepping motor, a lead screw rotating on the basis of a rotation of the stepping motor, a resin nut engaging with the lead screw and being movable in the direction of the optical axis on the basis of the rotation of the lead screw, and a spring pressing the movable frame in the direction of the optical axis so as to bring the movable frame into contact with the nut, and a cushioning material is provided between the nut and the movable frame so as to connect the nut and the movable frame.

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