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公开(公告)号：KR1020030095824A
公开(公告)日：2003-12-24
申请号：KR1020020033399
申请日：2002-06-14
Applicant: 삼성전자주식회사
Abstract: PURPOSE: A photodetector structure and a method for controlling an angle between a laser major axis and a pit are provided to simply control an angle between a major axis of a laser unit and a pit in the range of about 45°, thereby improving the play signal characteristics and the corresponding force for double refraction disc. CONSTITUTION: A photodetector structure includes a main light sensor(50a), and first and second sub light sensors(50b,50c) disposed at both sides of the main light sensor. The first sub light sensor is divided into four parts asymmetrically. A line connected from a division center(p) of the first light sensor to a division center(q) of the main light sensor preferably forms 45° with respect to a horizontal direction. A distance(L) from the division centers is equal to an interval between first and second laser light sources in a light module. Since the first sub light sensor is asymmetrically divided into four parts, first and second light radiated from the first and second laser light sources are used commonly with respect to either side beam of three-splitted beams.
Abstract translation: 目的：提供一种用于控制激光长轴和凹坑之间的角度的光电检测器结构和方法，以简单地控制激光单元的长轴与凹坑之间的角度在约45°的范围内，从而改善了播放 信号特性和双折射光盘的对应力。 构成：光检测器结构包括主光传感器（50a），以及设置在主光传感器两侧的第一和第二子光传感器（50b，50c）。 第一副光传感器被不对称地分成四部分。 从第一光传感器的分割中心（p）连接到主光传感器的分割中心（q）的线优选地相对于水平方向形成45°。 来自分割中心的距离（L）等于光模块中的第一和第二激光光源之间的间隔。 由于第一子光传感器被不对称地分成四部分，所以从第一和第二激光光源照射的第一和第二光相对于三分裂光束的任一侧光束共同使用。
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公开(公告)号：KR1020080020901A
公开(公告)日：2008-03-06
申请号：KR1020060084409
申请日：2006-09-01
Applicant: 삼성전자주식회사
IPC: G11B7/1374 , G11B7/1365 , G11B7/1395
CPC classification number: G11B7/1356 , G11B7/1275 , G11B7/1365 , G11B7/1374 , G11B19/125 , G11B2007/0006
Abstract: An optical pick-up apparatus is provided to use BD and HD-DVD(High Definition-Digital Versatile Disk) in common and reduce manufacturing cost by using a beam splitter for inputting light to first and second objective lenses. An optical pick-up apparatus comprises a first objective lens(11), a second objective lens(13), a first light source(15), a first light detector(17), and a beam splitter(19). The first objective lens has a low numerical aperture for a recording medium of low density. The second objective lens has a high numerical aperture for a recording medium of high density. The first light source emits light of short wavelength for using the first and second objective lenses. The first light detector receives light which is outputted from the first light source and concentrated on the recording medium by the first and second objective lenses and then reflected. The beam splitter guides a portion of light emitted from the first light source to the first objective lens and the other portions to the second objective lens.
Abstract translation: 提供一种共同使用BD和HD-DVD（高分辨率数字通用盘）的光学拾取装置，并且通过使用用于将光输入到第一和第二物镜的分束器来降低制造成本。 光学拾取装置包括第一物镜（11），第二物镜（13），第一光源（15），第一光检测器（17）和分束器（19）。 对于低密度记录介质，第一物镜具有低数值孔径。 第二物镜具有高密度记录介质的高数值孔径。 第一光源发射使用第一和第二物镜的短波长的光。 第一光检测器接收从第一光源输出并由第一和第二物镜在记录介质上集中并然后被反射的光。 分束器将从第一光源发射的光的一部分引导到第一物镜，将其它部分引导到第二物镜。
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公开(公告)号：KR100467588B1
公开(公告)日：2005-01-24
申请号：KR1020020033399
申请日：2002-06-14
Applicant: 삼성전자주식회사
Abstract: PURPOSE: A photodetector structure and a method for controlling an angle between a laser major axis and a pit are provided to simply control an angle between a major axis of a laser unit and a pit in the range of about 45°, thereby improving the play signal characteristics and the corresponding force for double refraction disc. CONSTITUTION: A photodetector structure includes a main light sensor(50a), and first and second sub light sensors(50b,50c) disposed at both sides of the main light sensor. The first sub light sensor is divided into four parts asymmetrically. A line connected from a division center(p) of the first light sensor to a division center(q) of the main light sensor preferably forms 45° with respect to a horizontal direction. A distance(L) from the division centers is equal to an interval between first and second laser light sources in a light module. Since the first sub light sensor is asymmetrically divided into four parts, first and second light radiated from the first and second laser light sources are used commonly with respect to either side beam of three-splitted beams.
Abstract translation: 目的：提供一种用于控制激光主轴和凹坑之间的角度的光电检测器结构和方法，以简单地控制激光器单元的主轴与凹坑之间的角度在大约45°和deg的范围内，从而改善 播放信号特征和双折射盘的相应力。 构成：光检测器结构包括主光传感器（50a）以及设置在主光传感器两侧的第一和第二子光传感器（50b，50c）。 第一副光传感器不对称地分成四个部分。 从第一光传感器的分割中心（p）连接到主光传感器的分割中心（q）的线优选地形成45°＆amp; 相对于水平方向。 距离分割中心的距离（L）等于光模块中第一和第二激光源之间的间隔。 由于第一副光传感器被不对称地分成四个部分，所以从第一和第二激光源辐射的第一和第二光通常相对于三分离光束的任一侧光束被使用。
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公开(公告)号：KR100444989B1
公开(公告)日：2004-08-21
申请号：KR1020010085106
申请日：2001-12-26
Applicant: 삼성전자주식회사
IPC: G11B7/1395
Abstract: PURPOSE: A method for controlling the size of an optical spot is provided to simply control the size of the optical spot by controlling only thickness of a beam splitter without installing a concave lens. CONSTITUTION: A beam splitter(110) converts a path of light irradiated from a light source(100). A collimator lens(115) makes the light parallel. An objective lens(120) focuses the light at a recording medium(125). An optical detector(130) receives the light reflected from the recording medium. A light size constant α is decided by obtaining a slope of a graph obtained from a simulation related to changes in the size of an optical spot according to changes in thickness of the beam splitter. Thickness t of the beam splitter is controlled to satisfy the following formula: the size of the optical spot = t x α.
Abstract translation: 目的：提供一种用于控制光斑尺寸的方法，以通过仅控制分束器的厚度而不安装凹透镜来简单地控制光斑的尺寸。 构成：分束器（110）转换从光源（100）发射的光的路径。 准直透镜（115）使光平行。 物镜（120）将光聚焦在记录介质（125）上。 光检测器（130）接收从记录介质反射的光。 轻尺寸常数＆amp; 通过根据与分束器的厚度变化相关的光斑尺寸变化的仿真获得曲线的斜率来确定。 控制分束器的厚度t以满足下面的公式：光斑的大小= t×α。
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公开(公告)号：KR100438701B1
公开(公告)日：2004-07-05
申请号：KR1020010057179
申请日：2001-09-17
Applicant: 삼성전자주식회사
IPC: G11B7/1381
CPC classification number: G11B7/127 , G11B7/08 , G11B7/0956 , G11B7/1353 , G11B7/1381 , G11B7/13922 , G11B7/22 , G11B2007/0006
Abstract: An optical pickup includes a light source which emits first and second lights having different wavelengths for a first recording medium and a second recording medium having a relatively large thickness, respectively, an optical path changer which alters a traveling path of incident light, and an objective lens which focuses the first and second lights on the recording medium. While the light source emits the first light, a photodetector is adjusted to be aligned with the optical axis for the first recording medium. The light source and/or a sensing lens are adjusted in the direction of the optical axis, and the tilt of the objective lens is adjusted. Next, while the light source is operated to emit the second light, the light source is adjusted in a rotating direction. As such, an optical axis alignment is completed for the first and second recording media.
Abstract translation: 一种光学拾取器包括：光源，分别针对第一记录介质和第二记录介质分别发射具有不同波长的第一和第二光;光路改变器，改变入射光的行进路径;以及物镜 将第一和第二光聚焦在记录介质上的透镜。 当光源发射第一光时，光电检测器被调整为与第一记录介质的光轴对齐。 光源和/或传感透镜在光轴方向上被调节，并且物镜的倾斜被调节。 接着，在操作光源以发射第二光的同时，沿旋转方向调节光源。 如此，对于第一和第二记录介质完成光轴对齐。
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Patent Agency Ranking
公开(公告)号：KR100529315B1
公开(公告)日：2005-11-17
申请号：KR1020030029364
申请日：2003-05-09
Applicant: 삼성전자주식회사
IPC: G11B7/127 , G11B7/1365 , H01S5/022
CPC classification number: G11B7/1359 , G11B7/127 , G11B7/1365 , G11B7/1398
Abstract: 광픽업모듈 및 이를 채용한 광픽업장치가 개시된다. 개시된 광픽업모듈은 베이스와, 베이스 상에 설치되어 소정파장의 레이저빔을 조사하는 반도체레이저와, 반도체 레이저를 감싸는 캡의 소정 위치에 결합 설치되어 투과되는 레이저빔을 정형함과 아울러 입사 빔의 일부를 반사시키는 빔정형 윈도우와, 레이저빔의 진행경로에 대응되도록 빔 정형 윈도우의 전면에 설치되어 빔 정형 윈도우를 통과하면서 수평 편광된 레이저빔을 원형편광으로 만들고 광디스크로부터 반사된 광을 수직편광으로 만드는 1/4 편광판과 캡의 내부에 마련되어, 빔정형 윈도우에서 반사된 레이저빔을 수광하여 레이저 반도체에서 조사된 레이저빔을 모니터링하는 모니터용 광 검출기를 포함한다.
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公开(公告)号：KR100522594B1
公开(公告)日：2005-10-24
申请号：KR1020020065518
申请日：2002-10-25
Applicant: 삼성전자주식회사
IPC: G11B7/09 , G11B7/1398
CPC classification number: G11B7/1275 , G11B7/0932 , G11B2007/0006
Abstract: 축상의 광 및 비축상의 광 각각이 광기록매체의 해당 기록면에 원형 상의 광스폿을 형성하도록 된 구조의 트윈 레이저 다이오드를 광원으로 채용한 호환형 광픽업장치 및 광기록재생장치가 개시되어 있다.
이 개시된 호환형 광픽업장치는, 마운트와, 이 마운트 상에 이웃되게 설치되며 서로 다른 파장영역의 레이저 광을 조사하는 제1 및 제2광원을 구비한 광출력모듈과; 제1 및 제2광원 각각에서 출사된 광을 집속시켜 서로 포맷이 다른 광기록매체 각각에 맺히도록 하는 대물렌즈와; 광출력모듈과 대물렌즈 사이의 광로 상에 배치되어 입사광의 진행경로를 변환하는 광로변환수단과; 제1 및 제2광원에서 조사되고 광기록매체에서 반사된 후 광로변환수단을 경유하여 입사된 광을 수광하여 정보신호 및 오차신호를 검출하는 광검출기와; 대물렌즈를 포커스 오차신호 및 트랙오차신호를 보정하는 방향으로 구동하는 것으로 대물렌즈가 설치되는 가동부재를 구비하며, 제1 및 제2광원에서 조사된 광중 광의 중심이 대물렌즈의 주축을 벗어나서 진행하는 광을 이용하여 정보의 기록재생을 수행하는 경우 가동부재를 롤링(rolling)시킬 수 있도록 된 액츄에이터;를 포함하는 것을 특징으로 한다.-
公开(公告)号：KR100477640B1
公开(公告)日：2005-03-23
申请号：KR1020020001429
申请日：2002-01-10
Applicant: 삼성전자주식회사
IPC: G11B7/1395 , G11B7/1353
Abstract: 포맷이 서로 다른 복수의 기록매체에 각각 적합한 파장이 서로 다른 복수의 광을 출사하는 광원유니트와, 광원유니트쪽에서 입사된 광을 집속시켜 기록매체에 광스폿을 형성하는 대물렌즈와, 기록매체에서 반사된 광을 수광하여 정보신호 및/또는 오차신호를 검출하는 광검출기와, 광원유니트와 대물렌즈 사이의 광경로 상에 배치되어 입사되는 광의 진행 경로를 변환하며 광원유니트로부터 대물렌즈로 입사되는 복수의 광 중 적어도 일 광의 유효 빔 크기를 대응하는 기록매체를 위한 개구수에 맞게 조절하도록 일면에 제1홀로그램 패턴이 형성된 홀로그램 빔스프리터를 포함하는 것을 특징으로 하는 호환형 광픽업이 개시되어 있다.
개시된 호환형 광픽업은, 일면에 홀로그램 패턴이 형성된 홀로그램 빔스프리터를 구비하므로, 별도의 개구수 조절을 위한 디바이스가 불필요하여, 광학부품수가 종래에 비해 줄어든다. 따라서, 고온 동작에서의 불작동 문제가 크게 개선될 수 있다.-
公开(公告)号：KR1020050024973A
公开(公告)日：2005-03-11
申请号：KR1020030062242
申请日：2003-09-05
Applicant: 삼성전자주식회사
IPC: G11B7/085
Abstract: PURPOSE: An optical pickup device of an optical disk drive is provided to guide one end of an optical pickup unit on a main guide by a sliding bearing, and to slide other end thereof by contacting a receiving groove with a supplementary guide, thereby reducing a frictional force generated during a reciprocating motion. CONSTITUTION: An optical pickup unit(30) disposed in an optical pickup device(100) is connected to a main guide(43) by a sliding bearing(31). A supplementary guide receiving groove portion(101) is linearly contacted with a supplementary guide(102), and guides a path for the optical pickup unit(30) accessing to and being estranged from a turn table(20). By protruding a sliding projection(101a) in a position opposed to the supplementary guide(102), an external side of the supplementary guide(102) is linearly contacted.
Abstract translation: 目的：提供一种光盘驱动器的光学拾取装置，用于通过滑动轴承将光学拾取单元的一端引导到主引导件上，并通过使接收槽与辅助引导件接触而使其另一端滑动，从而减少 往复运动时产生的摩擦力。 构成：设置在光学拾取装置（100）中的光学拾取单元（30）通过滑动轴承（31）连接到主导向件（43）。 辅助引导件接收槽部分（101）与辅助引导件（102）线性接触，并引导用于光学拾取单元（30）进入和离开转台（20）的路径。 通过将滑动突起（101a）突出在与辅助引导件（102）相对的位置，辅助引导件（102）的外侧线性接触。
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公开(公告)号：KR1020040096357A
公开(公告)日：2004-11-16
申请号：KR1020030029364
申请日：2003-05-09
Applicant: 삼성전자주식회사
IPC: G11B7/127 , G11B7/1365 , H01S5/022
CPC classification number: G11B7/1359 , G11B7/127 , G11B7/1365 , G11B7/1398
Abstract: PURPOSE: An optical output module and an optical pickup device adopting the optical output module thereinto is provided to dispose a beam shaping window inside while disposing a 1/4 wavelength plate in the optical output module, and to prevent a beam reflected from an optical disk from being directly incident on an optical detector, thereby simplifying a structure and smoothly controlling a laser output. CONSTITUTION: An optical output module(30) comprises as follows. A semiconductor laser(41) and a monitoring optical detector(43) are installed on a base(31). A cap(33) covers the semiconductor laser(41) and the monitoring optical detector(43). A beam shaping window(45) is disposed on a proceeding path of a laser beam. A 1/4 polarizer(47) is installed on a front side of the beam shaping window(45), and forms the laser beam as a circular polarized beam.
Abstract translation: 目的：提供一种采用光输出模块的光输出模块和光拾取装置，在光输出模块中设置1/4波片，同时配置光束整形窗，防止从光盘反射的光束 从而直接入射到光学检测器上，从而简化结构并平滑地控制激光输出。 构成：光输出模块（30）包括如下。 半导体激光器（41）和监视光检测器（43）安装在基座（31）上。 盖（33）覆盖半导体激光器（41）和监视光检测器（43）。 光束整形窗口（45）设置在激光束的行进路径上。 在光束整形窗（45）的前侧安装有1/4偏振片（47），并将激光束形成为圆偏振光束。
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