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1. 发明授权

US07274633B2 Optical pickup 失效
标题翻译：光学拾音
公开(公告)号：US07274633B2
公开(公告)日：2007-09-25
申请号：US10822836
申请日：2004-04-13
申请人： Ryotaro Nakagawa
发明人： Ryotaro Nakagawa
IPC分类号： G11B7/00
CPC分类号： G11B7/22 , G11B7/13
摘要： An optical pickup in which a plate 2 provided with a photodiode 22 is bonded to an optical bench 1 through an adhesive agent layer 3 in a state in which a minute gap α is maintained between the plate 2 and the optical bench 1. Circular through holes 27 are formed in advance at a plurality of portions of the plate 2. The adhesive agent layer 3 is formed as an adhesive agent injected into the through holes 27 at the plurality of portions is forced out downward through the through holes 27 and is cured in the state of having reached an upper surface 12 of the optical bench 1. The amount of the adhesive agent injected with respect to each of the through holes is controlled so as to be fixed.
摘要翻译：其中在光盘2和光学平台1之间保持微小间隙α的状态下，通过粘合剂层3将具有光电二极管22的板2接合到光学平台1的光学拾取器。预先在板2的多个部分形成圆形通孔27。粘合剂层3形成为注入通孔27中的粘合剂，多个部分通过通孔27被向下推出，并且在已经到达光台1的上表面12的状态下固化。相对于每个通孔注入的粘合剂的量被控制为固定。

2. 发明申请

US20070104076A1 Optical pickup 审中-公开
标题翻译：光学拾音
公开(公告)号：US20070104076A1
公开(公告)日：2007-05-10
申请号：US11506906
申请日：2006-08-21
申请人： Ryotaro Nakagawa , Masanori Takahashi , Hideaki Funakoshi , Teruaki Sogawa
发明人： Ryotaro Nakagawa , Masanori Takahashi , Hideaki Funakoshi , Teruaki Sogawa
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。

3. 发明申请

US20070002717A1 Method for designing an optical pickup 失效
标题翻译：光学拾取器的设计方法
公开(公告)号：US20070002717A1
公开(公告)日：2007-01-04
申请号：US11514902
申请日：2006-09-05
申请人： Ryotaro Nakagawa , Masanori Takahashi , Hideaki Funakoshi , Teruaki Sogawa
发明人： Ryotaro Nakagawa , Masanori Takahashi , Hideaki Funakoshi , Teruaki Sogawa
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。}

4. 发明申请

US20050243662A1 Optical pickup 失效
标题翻译：光学拾音
公开(公告)号：US20050243662A1
公开(公告)日：2005-11-03
申请号：US11115279
申请日：2005-04-27
申请人： Ryotaro Nakagawa
发明人： Ryotaro Nakagawa
IPC分类号： G11B7/09 , G11B7/00 , G11B7/12
CPC分类号： G11B7/12 , G11B7/0933 , G11B7/0935
摘要： A lens holder is provided with a focusing coil for urging the lens holder in a focusing direction and tracking coils for urging the lens holder in a tracking direction in cooperation with magnets. A magnet is disposed in a space where the focusing coil and the tracking coil are opposed to each other in a through hole of the lens holder, such that a magnetized surface on one surface side of the magnet is opposed to the focusing coil and a magnetized surface on the other surface side thereof is opposed to the tracking coil.
摘要翻译：透镜保持器设置有聚焦线圈，用于在聚焦方向上推动透镜保持器，并且跟踪线圈用于与磁体协作地沿跟踪方向推动透镜保持器。磁体设置在聚焦线圈和跟踪线圈在透镜保持器的通孔中彼此相对的空间中，使得磁体的一个表面侧上的磁化表面与聚焦线圈相对，并且被磁化其另一表面侧的表面与跟踪线圈相对。

5. 发明授权

US08737186B2 Laser holder and optical pickup provided with same 有权
标题翻译：激光笔和光学拾音器都配有相同的
公开(公告)号：US08737186B2
公开(公告)日：2014-05-27
申请号：US13292216
申请日：2011-11-09
申请人： Ryotaro Nakagawa
发明人： Ryotaro Nakagawa
IPC分类号： G11B7/12
CPC分类号： G11B7/127 , G11B7/22 , H01S5/02208 , H01S5/02228 , H01S5/02244
摘要： A laser holder holds a semiconductor laser that has a metal frame part in which a semiconductor laser chip is mounted on one surface, and a resin part provided so as to surround the semiconductor laser chip. The laser holder is provided with an insertion part into which the semiconductor laser is inserted. The insertion part is provided with an aperture part that allows the resin part of the semiconductor laser inserted into the insertion part to be pushed from the exterior, and a wall surface part against which a reverse surface of the one surface of the metal frame part is pressed in a case where the resin part is pushed from the exterior.
摘要翻译：激光保持器保持半导体激光器，其具有在一个表面上安装半导体激光器芯片的金属框架部分和设置成围绕半导体激光器芯片的树脂部分。激光器保持器设置有插入半导体激光器的插入部。插入部设置有开口部，其允许插入到插入部的半导体激光器的树脂部分从外部被推出;以及壁表面部分，金属框架部分的一个表面的背面与该壁表面部分是在树脂部分被从外部推动的情况下被按压。

6. 发明申请

US20120113490A1 Laser Holder and Optical Pickup Provided With Same 有权
标题翻译：激光笔和光学拾音器相同
公开(公告)号：US20120113490A1
公开(公告)日：2012-05-10
申请号：US13292216
申请日：2011-11-09
申请人： Ryotaro NAKAGAWA
发明人： Ryotaro NAKAGAWA
IPC分类号： G02B26/08
CPC分类号： G11B7/127 , G11B7/22 , H01S5/02208 , H01S5/02228 , H01S5/02244
摘要： A laser holder holds a semiconductor laser that has a metal frame part in which a semiconductor laser chip is mounted on one surface, and a resin part provided so as to surround the semiconductor laser chip. The laser holder is provided with an insertion part into which the semiconductor laser is inserted. The insertion part is provided with an aperture part that allows the resin part of the semiconductor laser inserted into the insertion part to be pushed from the exterior, and a wall surface part against which a reverse surface of the one surface of the metal frame part is pressed in a case where the resin part is pushed from the exterior.
摘要翻译：激光保持器保持半导体激光器，其具有在一个表面上安装半导体激光器芯片的金属框架部分和设置成围绕半导体激光器芯片的树脂部分。激光器保持器设置有插入半导体激光器的插入部。插入部设置有开口部，其允许插入到插入部的半导体激光器的树脂部分从外部被推出;以及壁表面部分，金属框架部分的一个表面的背面与该壁表面部分是在树脂部分被从外部推动的情况下被按压。

7. 发明授权

US07680016B2 Method for designing an optical pickup 失效
标题翻译：光学拾取器的设计方法
公开(公告)号：US07680016B2
公开(公告)日：2010-03-16
申请号：US11514902
申请日：2006-09-05
申请人： Ryotaro Nakagawa , Masanori Takahashi , Hideaki Funakoshi , Teruaki Sogawa
发明人： Ryotaro Nakagawa , Masanori Takahashi , Hideaki Funakoshi , Teruaki Sogawa
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。

8. 发明申请

US20080259771A1 Optical Pickup Device 审中-公开
标题翻译：光学拾取装置
公开(公告)号：US20080259771A1
公开(公告)日：2008-10-23
申请号：US11834309
申请日：2007-08-06
申请人： Ryotaro NAKAGAWA
发明人： Ryotaro NAKAGAWA
IPC分类号： G11B7/00
CPC分类号： G11B7/0932 , G11B7/0956
摘要： An optical pickup device comprises a lens holder to hold an objective lens for irradiating a laser beam onto an optical disc; outer and inner circumferential side wires fixed at one ends thereof to outer and inner circumferential sides of the lens holder and extending substantially in parallel to the optical disc; a suspension holder for suspending and supporting the other ends of the outer and inner wires to cantilever the lens holder; and a magnetic drive circuit for driving the lens holder in a focusing direction and a tracking direction. The outer wires have an effective length longer than that of the inner wires. This makes it possible to tilt the objective lens so as to compensate the tilt of the optical disc, if any, at the time of recording and reproduction, thereby reducing jitter and improving recording and reproduction performance of the optical pickup device with simple structure.
摘要翻译：光学拾取装置包括：透镜保持器，用于保持用于将激光束照射到光盘上的物镜; 外周侧线和内周侧线固定在其一端处，并且与透镜保持器的外周侧和内周侧固定并且基本上平行于光盘延伸; 用于悬挂和支撑外线和内线的另一端以悬挂透镜架的悬架保持器; 以及用于在聚焦方向和跟踪方向上驱动透镜架的磁驱动电路。外线的长度比内线长。这使得可以倾斜物镜，以便在记录和再现时补偿光盘的倾斜（如果有的话），从而以简单的结构减少抖动并提高光学拾取装置的记录和再现性能。

9. 发明申请

US20080089192A1 Optical Disc Apparatus 有权
标题翻译：光盘装置
公开(公告)号：US20080089192A1
公开(公告)日：2008-04-17
申请号：US11871679
申请日：2007-10-12
申请人： Ryotaro NAKAGAWA , Teruaki Sogawa , Masanori Takahashi
发明人： Ryotaro NAKAGAWA , Teruaki Sogawa , Masanori Takahashi
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。

10. 发明申请

US20070206450A1 Optical pickup 有权
标题翻译：光学拾音
公开(公告)号：US20070206450A1
公开(公告)日：2007-09-06
申请号：US11711767
申请日：2007-02-28
申请人： Ryotaro Nakagawa
发明人： Ryotaro Nakagawa
IPC分类号： G11B7/00
CPC分类号： G11B7/0932
摘要： An optical pickup for disc device has elastic wires 15 reliably connected with a dumping gel box 6. Guide members 18 are provided integrally with the dumping gel box 6 along bottom edges of side surface 6 as of the dumping gel box 6 while portions of the guide members 18 opposing to the grooves 11 are cut out to form air outlet holes 19 for the communication of the grooves 11 with outside atmosphere. The connection wiring 13 in the form of a printed circuit film or strip is folded to have a U-shape and attached to a back surface 6b and the both side surfaces 6a of the dumping gel box 6 and both end portions 13a of the connection wiring 13 are tentatively adhered to the both side surfaces 6a of the dumping gel box 6 by quick drying adhesive 20. Thermosetting adhesive 14 is filled in the grooves 11 and heated to be set and finally adhere the both end portions 13a of the connection wiring 13 to the both side surfaces 6a of the dumping gel box 6. Ends 15b of elastic wires 15 extending from a lens holder 7 are attached against and soldered on lands 12 of the connection wiring 13.
摘要翻译：用于盘装置的光学拾取器具有与倾倒凝胶盒6可靠地连接的弹性丝线15。引导构件18与倾卸凝胶盒6一起设置在倾斜凝胶盒6的侧边缘上，同时切除与槽11相对的引导构件18的一部分，以形成用于连通的排气孔19 的槽11具有外部气氛。印刷电路膜或条带形式的连接布线13被折叠成具有U形并且附着到倾倒凝胶盒6的后表面6b和两个侧表面6a以及两个端部13a 通过快速干燥粘合剂20将连接配线13暂时粘接到倾倒凝胶盒6的两侧面6a。将热固性粘合剂14填充在槽11中并加热固化，最后将连接布线13的两端部分13a附着到倾倒凝胶盒6的两侧表面6a。从透镜保持件7延伸的端部15b的弹性线15被附着在焊接在连接布线13的焊盘12上。

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