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公开(公告)号：US06686697B2
公开(公告)日：2004-02-03
申请号：US10281233
申请日：2002-10-28
IPC分类号： H05B4136
CPC分类号： H05B33/089 , Y02B20/341
摘要： A circuit protects a light element and prevents a breakdown of a laser diode (LD) when electric static discharge (ESD) occurs. The circuit protects the light element in a drive to control an operation of the light element, which radiates light onto a disc. Here, the drive includes a switch between an active node of the light element and a predetermined potential so that the switch is short-circuited in a normal state, but is open when the drive operates. The light element is protected from static electricity or a surge voltage in a manufacturing process thereof or under a user environment. As a result, the probability that the light element is broken down is remarkably reduced.
摘要翻译： 电路保护光元件并防止当发生静电放电（ESD）时激光二极管（LD）的击穿。 电路保护驱动器中的光元件以控制将光照射到盘上的光元件的操作。 这里，驱动器包括在光元件的主动节点和预定电位之间的开关，使得开关在正常状态下短路，但是当驱动器工作时打开。 光元件在其制造过程中或在用户环境下被保护免受静电或浪涌电压的影响。 结果，光元件分解的概率显着降低。
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2.发明授权Optical pickup for cutting off optical noise and optical recording and/or reproducing apparatus using the same 有权用于切断光学噪声的光学拾取器及使用其的光学记录和/或再现装置公开(公告)号：US07355953B2
公开(公告)日：2008-04-08
申请号：US10686785
申请日：2003-10-17
IPC分类号： G11B7/125
CPC分类号： G11B7/1395 , G11B7/1263 , G11B7/1353 , G11B2007/13727
摘要： An optical pickup includes a light source which emits light, a grating which separates a portion of the light emitted from the light source, a reflecting member which reflects another portion of the light emitted from the light source, a monitoring photodetector disposed on a traveling path of the light reflected from the reflecting member and which measures the reflected light, an optical path changer which changes an optical path of the light separated by the grating, an objective lens light which condenses the light the optical path of which is changed onto a disc, and a signal detecting photodetector which receives the light reflected from the disc.
摘要翻译： 光拾取器包括发光的光源，分离从光源发出的光的一部分的光栅，反射从光源发射的光的另一部分的反射部件，设置在行进路径上的监视光电检测器 从反射构件反射并测量反射光的光，改变由光栅分离的光的光路的光路改变器，将其光路改变为光盘的光会聚的物镜光 以及接收从盘反射的光的信号检测光电检测器。
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