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公开(公告)号：US20070104076A1
公开(公告)日：2007-05-10
申请号：US11506906
申请日：2006-08-21
IPC分类号： G11B7/00
CPC分类号： G11B7/131 , G11B7/1275
摘要： An optical pickup that includes: a monolithic laser diode; and a photo-detector including each light receiving portion formed on one substrate and corresponding to each laser beam emitted from the monolithic laser diode, wherein the monolithic laser diode is arranged such that each light emitting point belonging to the monolithic laser diode is positioned on each reference axis, and such that each reference axis is inclined from a direction orthogonal to each laminar face containing the each light emitting point in a direction orthogonal to the active layer by an angle.
摘要翻译： 一种光学拾取器，包括：单片激光二极管; 以及光检测器，其包括形成在一个基板上并对应于从单片激光二极管发射的每个激光束的每个光接收部分，其中单片激光二极管被布置为使得属于单片激光二极管的每个发光点位于每个 并且使得每个参考轴线从与活性层正交的方向上包含每个发光点的每个层状面垂直的方向倾斜一角度。
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公开(公告)号：US20070002717A1
公开(公告)日：2007-01-04
申请号：US11514902
申请日：2006-09-05
IPC分类号： G11B7/00
CPC分类号： G11B7/082 , G11B7/1275 , G11B7/131 , G11B7/22 , G11B2007/0006
摘要： According to a method for designing an optical pickup including a monolithic laser diode that emits a laser light beam for DVD recording and a laser light beam for CD playback, two photodetective portions provided on the same substrate for receiving the laser light beams, and an objective lens, for each of the emitting portions of the monolithic laser diode for emitting the DVD recording and CD playback laser light beams respectively, the specification of the error of the emission direction thereof is determined according to the following formula: |(Δθ ⊥1×Δθ1×Dpd1/Dob1−Δθ ⊥2×Δθ2×Dpd2/Dob2)×Kpd2|≦7, where, let the variables corresponding to the DVD recording laser light beam be followed by a subscript “1” and variables corresponding to the CD playback laser light beam be followed by a subscript “2”, Δθ ⊥ represents the emission angle; Δθ represents the sensitivity, to the emission angle, of the deviation of the gravity center of the intensity of the light exiting from the object lens; Dob represents the diameter of the light beam immediately after exiting from the object lens; Dpd represents the diameter of the spot formed by the light beam on the photodetective portion; Kpd represents the sensitivity of the deviation of light reception balance to the deviation of the photodetective portion; and a represents the tolerable value for the remnant deviation of light reception balance.
摘要翻译： 根据用于设计包括发射用于DVD记录的激光束的单片激光二极管和用于CD重放的激光束的光学拾取器的方法，设置在用于接收激光束的同一基板上的两个光电检测部分和目标 透镜，对于分别用于发射DVD记录和CD播放激光的单片激光二极管的每个发射部分，其发射方向的误差的规格根据以下公式确定：|（Deltatheta⊥ 1 xDeltatheta xDpd 1 / Dob 1→ - →2→2→2→2→2→ 其中，使与DVD记录激光相对应的变量为x / p2 2 后跟一个下标“1”，对应于CD播放激光光束的变量后跟一个下标“2”，Deltatheta⊥表示发射角; Deltatheta代表离开物镜的光强度的重心偏离对发射角的敏感度; Dob表示从物镜离开后立即直径的光束; Dpd表示由光电检测部分上的光束形成的光斑的直径; Kpd表示光接收平衡与光检测部的偏差的偏差的灵敏度; a表示光接收余量的残余偏差的容许值。
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公开(公告)号：US07778130B2
公开(公告)日：2010-08-17
申请号：US11871679
申请日：2007-10-12
IPC分类号： G11B7/00
CPC分类号： G11B7/0945 , G11B7/0053 , G11B7/0908
摘要： An optical disc apparatus comprises, an optical pickup, a signal extracting unit for reading address information and an RF signal from an optical disc based on signal read by the optical pickup, and a main controller for performing jitter control and focus control. At an initial reading of the optical disc, the main controller determines whether an address information detector succeeds in reading the address information. If not successful (NO in S3), the main controller offsets a defocus position to two points in plus and minus directions from a defocus position giving best jitter (S7), calculates an approximate curve of signal level characteristics with a peak value (S8), and adjusts and allows the defocus value to correspond to this peak value (S9). If the optical disc apparatus cannot read address information, depending on the defocus value, it increases the signal level of the address information by the defocus position adjustment.
摘要翻译： 光盘装置包括：光拾取器，用于基于由光学拾取器读取的信号从光盘读取地址信息和RF信号的信号提取单元，以及用于执行抖动控制和聚焦控制的主控制器。 在初始读取光盘时，主控制器确定地址信息检测器是否成功读取地址信息。 如果不成功（S3中为“否”），则主控制器将散焦位置偏离从给出最佳抖动的散焦位置（S7）的正负方向的两个点，以峰值计算信号电平特性的近似曲线（S8） ，并且调整并允许散焦值对应于该峰值（S9）。 如果光盘装置不能读取地址信息，则根据散焦值，通过散焦位置调整来增加地址信息的信号电平。
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公开(公告)号：US07680016B2
公开(公告)日：2010-03-16
申请号：US11514902
申请日：2006-09-05
IPC分类号： G11B7/00
CPC分类号： G11B7/082 , G11B7/1275 , G11B7/131 , G11B7/22 , G11B2007/0006
摘要： A method for designing an optical pickup is provided. The optical pick includes a monolithic laser diode that emits a laser light beam for DVD recording and a laser light beam for CD playback, two photodetective portions, and an objective lens, for each of the emitting portions of the monolithic laser diode for emitting the DVD recording and CD playback laser light beams respectively, the specification of the error of the emission direction thereof is determined according to the following formula: |(Δθ⊥1×Δθ1×Dpd1/Dob1−Δθ⊥2×Δθ2×Dpd2/Dob2)×Kpd2|≦α, where, “1” corresponds to the DVD recording laser light beam and “2” corresponds to the CD playback laser light beam, Δθ⊥ represents the emission angle; Δθ represents the sensitivity; Dob represents the diameter of the light beam; Dpd represents the diameter of the spot formed by the light beam; Kpd represents the sensitivity; and α represents the tolerable value.
摘要翻译： 提供了一种用于设计光学拾取器的方法。 光学拾取器包括发射用于DVD记录的激光束和用于CD重放的激光束的两片光电二极管，用于发射DVD的单片激光二极管的每个发射部分的两个光电检测部分和物镜 记录和CD播放激光光束，其发射方向的误差的规格根据下式确定：|（＆Dgr;＆amp; Thetas;⊥1×＆Dgr;＆Thetas; 1×Dpd1 / Dob1-＆Dgr;＆Thetas; ⊥2×＆Dgr;＆thetas; 2×Dpd2 / Dob2）×Kpd2 |＆nlE;α，其中，“1”对应于DVD记录激光束，“2”对应于CD播放激光束，＆D; ⊥表示发射角; ＆Dgr;＆thetas; 代表灵敏度; Dob表示光束的直径; Dpd表示由光束形成的光斑的直径; Kpd代表灵敏度; α表示可容忍的值。
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公开(公告)号：US20080089192A1
公开(公告)日：2008-04-17
申请号：US11871679
申请日：2007-10-12
IPC分类号： G11B7/00
CPC分类号： G11B7/0945 , G11B7/0053 , G11B7/0908
摘要： An optical disc apparatus comprises, an optical pickup, a signal extracting unit for reading address information and an RF signal from an optical disc based on signal read by the optical pickup, and a main controller for performing jitter control and focus control. At an initial reading of the optical disc, the main controller determines whether an address information detector succeeds in reading the address information. If not successful (NO in S3), the main controller offsets a defocus position to two points in plus and minus directions from a defocus position giving best jitter (S7), calculates an approximate curve of signal level characteristics with a peak value (S8), and adjusts and allows the defocus value to correspond to this peak value (S9). If the optical disc apparatus cannot read address information, depending on the defocus value, it increases the signal level of the address information by the defocus position adjustment.
摘要翻译： 光盘装置包括：光拾取器，用于基于由光学拾取器读取的信号从光盘读取地址信息和RF信号的信号提取单元，以及用于执行抖动控制和聚焦控制的主控制器。 在初始读取光盘时，主控制器确定地址信息检测器是否成功读取地址信息。 如果不成功（S 3中为“否”），则主控制器将散焦位置偏离从提供最佳抖动的散焦位置的正负方向的两个点（S 7），计算具有峰值的信号电平特性的近似曲线（ S 8），并且调整并允许散焦值对应于该峰值（S 9）。 如果光盘装置不能读取地址信息，则根据散焦值，通过散焦位置调整来增加地址信息的信号电平。
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公开(公告)号：US08199623B2
公开(公告)日：2012-06-12
申请号：US12256497
申请日：2008-10-23
申请人： Teruaki Sogawa , Masanori Takahashi
发明人： Teruaki Sogawa , Masanori Takahashi
IPC分类号： G11B7/00
CPC分类号： G11B7/127 , G11B7/1263 , G11B7/13
摘要： An optical pickup includes a semiconductor laser, a beam splitter, a collimating lens, an objective lens, an aperture and a front monitor. The beam splitter splits a light beam emitted by the semiconductor laser into transmitted light and reflected light. The front monitor detects luminous energy of the transmitted light. The front monitor is disposed near an optical axis of the transmitted light so that the following is satisfied: 1≦(S×L)/(s×f)≦6.8. S is an area of an entrance pupil of the objective lens, f is an optical distance from an emission portion of the semiconductor laser to the collimating lens, s is an effective receiving area of the front monitor, and L is an optical distance from the emission portion of the semiconductor laser to the front monitor.
摘要翻译： 光拾取器包括半导体激光器，分束器，准直透镜，物镜，孔径和前监视器。 分束器将由半导体激光器发射的光束分离成透射光和反射光。 前置显示器检测透射光的光能。 前面监视器设置在透射光的光轴附近，使得满足以下条件：1＆nlE;（S×L）/（s×f）＆nlE; 6.8。 S是物镜的入射光瞳的面积，f是从半导体激光器的发射部分到准直透镜的光学距离，s是前监视器的有效接收面积，L是距离 半导体激光器的发射部分到前监视器。
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公开(公告)号：US07269120B2
公开(公告)日：2007-09-11
申请号：US10759088
申请日：2004-01-20
申请人： Teruaki Sogawa , Fumiaki Mori , Noritaka Tanabe
发明人： Teruaki Sogawa , Fumiaki Mori , Noritaka Tanabe
IPC分类号： G11B21/16
CPC分类号： G11B7/12 , G11B7/08582 , G11B7/0933
摘要： An optical pickup includes a radiating plate made to abut against a rear surface of a laser diode by positioning an engaging hole provided penetratingly in a central portion of the radiating plate concentrically with the laser diode. Slits are formed in the radiating plate to form a pair of tongues in the manner of point symmetry about an axis of the engaging hole. Screw insertion portions formed in the respective tongues are communicates with the slits. As screws are passed through the screw inserting portions and are screwed in, the radiating plate is secured to the base. When the screws are screwed in, the axis is positioned on a phantom line connecting points of application of force generated at proximal end portions of the tongues. Distances from the axis to the respective points of application of force are set to be substantially identical.
摘要翻译： 光拾取器包括通过将与激光二极管同心地设置在辐射板的中心部分的配合孔定位而抵靠激光二极管的后表面的散热板。 在辐射板中形成狭缝，以围绕接合孔的轴线点对称的方式形成一对舌片。 形成在舌片中的螺纹插入部分与狭缝连通。 当螺钉穿过螺钉插入部分并被拧入时，散热板固定到基座上。 当螺钉被拧入时，轴线定位在连接在舌的近端部分处产生的力的施加点的假想线上。 从轴到相应的施加点的距离被设置为基本相同。
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公开(公告)号：US06931651B2
公开(公告)日：2005-08-16
申请号：US10661539
申请日：2003-09-15
申请人： Teruaki Sogawa , Fumiaki Mori , Noritaka Tanabe
发明人： Teruaki Sogawa , Fumiaki Mori , Noritaka Tanabe
IPC分类号： G11B7/08 , G11B7/00 , G11B7/085 , G11B7/12 , G11B7/13 , G11B7/135 , G11B7/22 , G11B17/00 , G11B21/16
摘要： An optical pickup has a pair of left and right leg portions formed integrally at both side edge portions of a rear end portion of a resilient plate. The leg portions extend forwardly along a horizontal longitudinal direction. A pair of fixing holes are penetratingly provided in the respective leg portions on a transverse phantom line passing through a central portion of the resilient plate and extending in a horizontal transverse direction and at positions spaced apart an equal interval from a longitudinal phantom line passing through the central portion of the resilient plate and extending in the horizontal longitudinal direction. A pair of fixing screws are screwed into a pair of threaded holes in a mounting surface of a base through the fixing holes, thereby fixing the leg portions to the mounting surface.
摘要翻译： 光学拾取器具有一对在弹性板的后端部的两个侧边缘部分整体形成的左右腿部。 腿部沿着水平纵向方向向前延伸。 在穿过弹性板的中心部分的横向虚线上，在相应的腿部上贯穿设置一对固定孔，并且在水平横向方向上以及与穿过 弹性板的中心部分并且在水平纵向方向上延伸。 一对固定螺钉通过固定孔拧入基座的安装表面上的一对螺纹孔中，从而将腿部固定到安装表面。
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公开(公告)号：US06874155B2
公开(公告)日：2005-03-29
申请号：US09971760
申请日：2001-10-09
申请人： Teruaki Sogawa , Takayuki Murakami , Hideki Kume
发明人： Teruaki Sogawa , Takayuki Murakami , Hideki Kume
IPC分类号： G11B17/028
CPC分类号： G11B17/0284
摘要： This chucking apparatus 1 is an apparatus for holding a disk 5 which has been placed on a turntable 3 of a disk player, and includes a magnet 13, a chuck disk 11, a chuck arm 17, first engaging faces 13b and second engaging faces 25c. The chuck disk 11 is arranged so as to be faced with the turntable 3, and adapted to hold the magnet 13. The chuck disk 11 is a disc-like member which has a plurality of claws 25 formed around the magnet 13 which has been held and projecting toward the turntable 3, and engaging parts 25a provided at distal end portions 25a of the plurality of claws 25 to be engaged with an outer circumference of the magnet 13. The chuck arm 17 holds the chuck disk 11 rotatably. The first and the second engaging faces 13b and 25c restrict the engaging parts 25a of the claws 25 from deflecting in a direction away from the magnet.
摘要翻译： 该夹持装置1是用于保持放置在盘播放器的转台3上的盘5的装置，包括磁铁13，卡盘盘11，卡盘臂17，第一卡合面13b和第二卡合面25c 。 卡盘盘11被配置成与转台3相对并且适于保持磁体13.卡盘盘11是具有多个形成在磁体13周围的多个爪25的盘状部件 并且朝向转台3突出，以及设置在多个爪25的前端部25a处的接合部25a，以与磁体13的外周接合。卡盘臂17可旋转地保持卡盘盘11。 第一和第二接合面13b和25c限制爪25的接合部分25a沿远离磁体的方向偏转。
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公开(公告)号：US06351444B1
公开(公告)日：2002-02-26
申请号：US09506450
申请日：2000-02-18
申请人： Teruaki Sogawa , Takayuki Murakami
发明人： Teruaki Sogawa , Takayuki Murakami
IPC分类号： G11B2102
CPC分类号： G11B7/08582 , G11B7/082
摘要： A pickup device including a movable frame that holds a pickup, and a main shaft and a sub shaft that guide travelling of the movable frame. The other end portion of the main shaft, and one and the other portions of the sub shaft are attached to a support frame via tilt adjusting mechanisms, respectively. The tilt adjusting mechanisms each includes a rising end face, a spring member which always elastically urges the end portion of the shaft in an upward direction, a countersunk head screw, and a tapped hole into which the countersunk head screw is to be screwed.
摘要翻译： 一种拾取装置，包括保持拾取器的可移动框架，以及引导可移动框架行进的主轴和副轴。 主轴的另一端部和副轴的一个和另一个部分分别通过倾斜调节机构附接到支撑框架。 倾斜调节机构各自包括上升端面，总是沿向上方向弹性地推动轴的端部的弹簧构件，埋头螺钉和埋头孔螺钉拧入其中的螺纹孔。
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