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1. 发明授权

US06952389B2 Optical pickup device 失效
标题翻译：光学拾取装置
公开(公告)号：US06952389B2
公开(公告)日：2005-10-04
申请号：US10157861
申请日：2002-05-31
申请人： Chon-Su Kyoung , Seung-Man Oh , Ho-Seop Jeong
发明人： Chon-Su Kyoung , Seung-Man Oh , Ho-Seop Jeong
IPC分类号： G11B7/135 , G11B7/00 , G11B7/09 , G11B7/125 , G11B7/13
CPC分类号： G11B7/1381 , G11B7/0906 , G11B7/123 , G11B7/1275 , G11B7/131 , G11B7/1353 , G11B2007/0006
摘要： Disclosed herein is an optical pickup device. The optical pickup device has a lead frame package and a detecting unit. The lead frame package has a lead frame, a two-wavelength light source module and a hologram optical element. The lead frame has an opening formed to communicate with the outside. The two-wavelength light source module is arranged in a portion of the opening for emitting two beams having different wavelengths toward an optical disc. The hologram optical element is arranged over the two-wavelength light source module. Further, the hologram optical element includes a hologram pattern formed in its top and a wavefront-compensation hologram pattern formed on its bottom. The detecting unit has a board arranged beneath the lead frame package to be separated from and moved independently of the lead frame package, and a photo detector mounted on said board.
摘要翻译：本文公开了一种光学拾取装置。光拾取装置具有引线框封装和检测单元。引线框架封装具有引线框架，双波长光源模块和全息光学元件。引线框架具有形成为与外部连通的开口。双波长光源模块布置在开口的一部分中，以朝向光盘发射具有不同波长的两个光束。全息光学元件布置在双波长光源模块上。此外，全息光学元件包括形成在其顶部的全息图图案和形成在其底部的波前补偿全息图图案。检测单元具有布置在引线框架封装下方的板，以与引线框架封装独立地分离和移动，以及安装在所述板上的光电检测器。

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