专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明申请

US20090116529A1 SEMICONDUCTOR LASER APPARATUS, METHOD OF MANUFACTURING SEMICONDUCTOR LASER APPARATUS, AND OPTICAL PICKUP APPARATUS 失效
标题翻译：半导体激光装置，制造半导体激光装置的方法和光学拾取装置
公开(公告)号：US20090116529A1
公开(公告)日：2009-05-07
申请号：US12348573
申请日：2009-01-05
申请人： Masayuki HATA , Yasuyuki Bessho , Yasuhiko Nomura , Masayuki Shono , Kenji Nagatomi , Yoichi Tsuchiya
发明人： Masayuki HATA , Yasuyuki Bessho , Yasuhiko Nomura , Masayuki Shono , Kenji Nagatomi , Yoichi Tsuchiya
IPC分类号： H01S5/00
CPC分类号： H01S5/4043 , H01L2224/48091 , H01S5/02212 , H01S5/02272 , H01S5/02276 , H01S5/4087 , H01L2924/00014
摘要： A monolithic red/infrared semiconductor laser device is joined to a blue-violet semiconductor laser device. The distance between a blue-violet emission point in the blue-violet semiconductor laser device and an infrared emission point in an infrared semiconductor laser device is significantly shorter than the distance between a red emission point in a red semiconductor laser device and the infrared emission point. A blue-violet laser beam, a red laser beam, and an infrared laser beam respectively emitted from the blue-violet emission point, the red emission point, and the infrared emission point are introduced into a photodetector after being incident on an optical disk by an optical system comprising a polarizing beam splitter, a collimator lens, a beam expander, a λ/4 plate, an objective lens, a cylindrical lens, and an optical axis correction element.
摘要翻译：单片红/红外半导体激光器件连接到蓝紫色半导体激光器件。蓝紫色半导体激光装置中的蓝紫色发射点与红外线半导体激光装置的红外线发射点之间的距离明显短于红色半导体激光装置的红色发射点与红外线发射点。从蓝紫色发射点，红色发射点和红外线发射点分别发射的蓝紫色激光束，红色激光束和红外激光束被入射到光盘上之后被引入光电检测器包括偏振分束器，准直透镜，光束扩展器，λ/ 4板，物镜，柱面透镜和光轴校正元件的光学系统。

32. 发明申请

US20060140078A1 Optical pickup device 失效
标题翻译：光学拾取装置
公开(公告)号：US20060140078A1
公开(公告)日：2006-06-29
申请号：US11302343
申请日：2005-12-14
申请人： Kenji Nagatomi , Seiji Kajiyama , Yoichi Tsuchiya
发明人： Kenji Nagatomi , Seiji Kajiyama , Yoichi Tsuchiya
IPC分类号： G11B7/00
CPC分类号： G11B7/1381 , G11B7/123 , G11B7/1275 , G11B7/1353 , G11B7/1365 , G11B7/1378 , G11B7/1398 , G11B2007/0006 , G11B2007/13727
摘要： Provided is an optical pickup device capable of suppressing an increase in the number of parts and complication of an optical system while a diffraction grating is used as an optical axis correcting element. Three kinds of blue, red, and infrared laser light beams are emitted from laser element provided in the same CAN package. A blue light emitting point (wavelength: 405 nm) and an infrared light emitting point (wavelength: 780 nm) are arranged in a layer forming direction of the laser elements such that an interval (d2) between the light emitting points becomes shorter than an interval (d1) between each of the light emitting points and a red light emitting point. An optical axis of the laser light beam emitted from the red light emitting point (wavelength: 650 nm) is aligned with an optical axis of the laser light beam emitted from the blue or infrared light emitting point by using the diffraction grating. The number of diffraction gratings for optical axis correction can be made to one and a single photo detector can be commonly used for laser light beams having different wavelengths.
摘要翻译：提供了一种能够抑制在使用衍射光栅作为光轴校正元件的情况下部件数量增加和光学系统的复杂性的光学拾取装置。从相同CAN封装中提供的激光元件发射三种蓝色，红色和红外激光束。在激光元件的层形成方向上布置蓝色发光点（波长：405nm）和红外发光点（波长：780nm），使得发光点之间的间隔（d 2）变得短于每个发光点和红色发光点之间的间隔（d 1）。从红色发光点（波长：650nm）发射的激光束的光轴与通过使用衍射光栅从蓝色或红外光发射点发射的激光束的光轴对准。用于光轴校正的衍射光栅的数量可以制成一个，并且单个光电检测器可以被普遍用于具有不同波长的激光束。

33. 发明授权

US08345528B2 Optical pickup device 失效
标题翻译：光学拾取装置
公开(公告)号：US08345528B2
公开(公告)日：2013-01-01
申请号：US12872276
申请日：2010-08-31
申请人： Kenji Nagatomi
发明人： Kenji Nagatomi
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G11B7/131 , G11B7/1381 , G11B2007/0006
摘要： An optical pickup device includes an objective lens portion which converges laser light at a first focal point and a second focal point; an actuator which positions the first focal point or the second focal point on a recording layer in a disc; an astigmatism element which sets a first focal line position and a second focal line position of the laser light reflected on the disc away from each other in a propagating direction of the laser light; a spectral element which disperses four light fluxes obtained by dividing the laser light reflected on the disc in four from each other; and a photodetector having a sensor group which receives the four light fluxes dispersed by the spectral element.
摘要翻译：一种光学拾取装置，包括在第一焦点和第二焦点处会聚激光的物镜部分; 致动器，其将所述第一焦点或所述第二焦点定位在盘中的记录层上; 设置在激光的传播方向上在盘上反射的激光的第一焦线位置和第二焦线位置彼此远离的散光元件; 将通过将在盘上反射的激光分割成四个而获得的四个光束的光谱元件彼此分成四个; 以及具有传感器组的光电检测器，其接收由光谱元件分散的四个光通量。

34. 发明申请

US20120099414A1 OPTICAL PICKUP DEVICE 审中-公开
标题翻译：光学拾取器件
公开(公告)号：US20120099414A1
公开(公告)日：2012-04-26
申请号：US13282216
申请日：2011-10-26
申请人： Kenji Nagatomi
发明人： Kenji Nagatomi
IPC分类号： G11B7/135
CPC分类号： G11B7/1378 , G11B7/1275 , G11B7/1353 , G11B7/1359 , G11B2007/0006
摘要： An astigmatism element converges reflected light to generate focal lines, and a light separating element separates light fluxes of the reflected light entered into four first areas from each other. Two of the first areas are disposed in a direction along which a pair of vertically opposite angles defined by first and second straight lines are aligned, and the other two of the first areas are disposed in a direction along which the other pair of vertically opposite angles are aligned. Each of the four first areas is divided into two segment areas by a second area. The reflected light to be entered into the second area is guided to a position on the outside of sensors of a photodetector, and light fluxes of the reflected light to be entered into the paired segment areas are irradiated, on the photodetector, at positions away from each other.
摘要翻译：散光元件会聚反射光以产生焦线，并且光分离元件将入射到四个第一区域的反射光的光束彼此分离。第一区域中的两个沿着由第一和第二直线限定的一对垂直相对角度对准的方向设置，另外两个第一区域沿另一对垂直相对角度的方向设置对齐。四个第一区域中的每一个被第二区域分成两个区段区域。要进入第二区域的反射光被引导到光电检测器的传感器的外侧的位置，并且将要进入成对的区域区域的反射光的光束照射在光电检测器上的位置处彼此。

35. 发明申请

US20120075981A1 OPTICAL PICKUP DEVICE 失效
标题翻译：光学拾取器件
公开(公告)号：US20120075981A1
公开(公告)日：2012-03-29
申请号：US13238286
申请日：2011-09-21
申请人： Kenji Nagatomi
发明人： Kenji Nagatomi
IPC分类号： G11B7/135
CPC分类号： G11B7/1378 , G11B7/1353 , G11B7/1381 , G11B2007/0013
摘要： Two light flux areas are disposed in a direction along which a pair of vertically opposite angles defined by first and second straight lines are aligned, and the other two light flux areas are disposed in a direction along which the other pair of vertically opposite angles are aligned. A spectral element sets propagating directions of divided elements of each of light fluxes obtained by dividing each of the light fluxes by a third straight line intersecting with the first and second straight lines by an angle of 45 degrees, or by a fourth straight line orthogonal to the third straight line to disperse the divided elements on a photodetector. The photodetector is provided with sensors which individually receive the divided elements of the light fluxes.
摘要翻译：两个光通量区域沿着由第一和第二直线限定的一对垂直相对角度对准的方向设置，另外两个光通量区域沿另一对垂直相对角度对齐的方向设置。光谱元件将通过将每个光束除以与第一和第二直线相交的第三直线乘以45度的角度而获得的每个光束的分割元件的传播方向，或者将与第第三直线将分离的元件分散在光电检测器上。光电检测器设置有分别接收光通量的分割元件的传感器。

36. 发明授权

US08121013B2 Optical pickup apparatus and optical disc apparatus 失效
标题翻译：光拾取装置和光盘装置
公开(公告)号：US08121013B2
公开(公告)日：2012-02-21
申请号：US12567299
申请日：2009-09-25
申请人： Kenji Nagatomi , Yoichi Tsuchiya
发明人： Kenji Nagatomi , Yoichi Tsuchiya
IPC分类号： G11B7/135
CPC分类号： G11B7/094 , G11B7/0901 , G11B7/0912 , G11B7/0943 , G11B7/133 , G11B7/1353 , G11B7/1378 , G11B2007/0013
摘要： An optical pickup apparatus changes a propagation direction of luminous fluxes, out of a laser light reflected by a disc, in four luminous flux regions set about a laser optical axis so as to mutually disperse these luminous fluxes. A signal light region in which only a signal light is present appears on a detection surface of a photodetector. A plurality of sensors for a signal light are placed at positions irradiated with the signal light within the region. When an arithmetic process is performed on a detection signal outputted from each sensor, a DC component occurring in a tracking error signal is suppressed.
摘要翻译：光拾取装置将由光反射的激光中的光束的传播方向改变为围绕激光光轴设置的四个光通量区域中，以便相互分散这些光通量。在光电检测器的检测表面上出现仅存在信号光的信号光区域。用于信号光的多个传感器被放置在用该区域内的信号光照射的位置处。当对从每个传感器输出的检测信号执行运算处理时，抑制在跟踪误差信号中出现的DC分量。

37. 发明申请

US20100271926A1 OPTICAL PICKUP DEVICE AND OPTICAL DISC DEVICE 失效
标题翻译：光学拾取装置和光盘装置
公开(公告)号：US20100271926A1
公开(公告)日：2010-10-28
申请号：US12768510
申请日：2010-04-27
申请人： Kenji Nagatomi
发明人： Kenji Nagatomi
IPC分类号： G11B7/135
CPC分类号： G11B7/1378 , G11B7/0903 , G11B7/0912 , G11B7/094 , G11B7/133
摘要： An optical pickup device imparts different astigmatisms from each other to light fluxes in four light flux areas formed around an optical axis of laser light, out of the laser light reflected on a disc. The optical pickup device also changes the propagating directions of the light fluxes in the light flux areas to separate the light fluxes in the light flux areas each other. A signal light area where only signal light exists is defined on a detection surface of a photodetector. Eight sensing portions are arranged at a position corresponding to the signal light area. According to this arrangement, only the signal light is received by the sensing portions to thereby suppress deterioration of a detection signal resulting from stray light. Further, a push-pull signal, whose DC component is suppressed, is obtained by computing an output from the eight sensing portions by a predetermined formula.
摘要翻译：光拾取装置将不同的散光彼此分配给在光盘上反射的激光中形成在激光的光轴周围的四个光通量区域中的光通量。光学拾取装置还改变光束区域中的光束的传播方向，以分离光束区域中的光束。仅在信号光存在的信号光区域被限定在光检测器的检测表面上。八个感测部分布置在对应于信号光区域的位置处。根据这种布置，只有信号光被感测部分接收，从而抑制由杂散光引起的检测信号的劣化。此外，通过以预定公式计算来自八个感测部分的输出，获得DC分量被抑制的推挽信号。

38. 发明申请

US20100208569A1 OPTICAL PICKUP DEVICE 失效
标题翻译：光学拾取器件
公开(公告)号：US20100208569A1
公开(公告)日：2010-08-19
申请号：US12708071
申请日：2010-02-18
申请人： Kenji Nagatomi
发明人： Kenji Nagatomi
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B7/1367
摘要： An optical pickup device has an astigmatism element, a polarization setting element, and a polarizer. The astigmatism element converges laser light reflected on a disc in a first direction and a second direction to form a first focal line and a second focal line. The polarization setting element makes polarization directions of light fluxes different from each other, the light fluxes being obtained by dividing a light flux of the laser light transmitted through the astigmatism element into two by a straight line parallel to the first direction. The polarizer transmits light having polarization directions obtained by inverting the polarization directions set by the polarization setting element with respect to the straight line parallel to the first direction, respectively.
摘要翻译：光学拾取装置具有像散元件，偏振设置元件和偏振器。散光元件在第一方向和第二方向上会聚在盘上反射的激光，以形成第一焦线和第二焦线。偏光设定元件使光束的偏振方向彼此不同，通过将通过像散元件透射的激光的光束分割成与第一方向平行的直线来获得光束。偏振器透射具有偏振方向的光，该偏振方向通过相对于平行于第一方向的直线反转由偏振设置元件设置的偏振方向而获得。

39. 发明申请

US20060126673A1 Optical pickup device 失效
公开(公告)号：US20060126673A1
公开(公告)日：2006-06-15
申请号：US11290505
申请日：2005-12-01
申请人： Kenji Nagatomi , Seiji Kajiyama
发明人： Kenji Nagatomi , Seiji Kajiyama
IPC分类号： H01S3/10
CPC分类号： H01S5/022 , G11B7/123 , G11B7/1275 , G11B7/1353 , G11B7/1378 , G11B7/1381 , G11B7/1398 , G11B2007/0006 , G11B2007/13727 , H01S5/005 , H01S5/02212 , H01S5/4031 , H01S5/4043 , H01S5/4087
摘要： Provided is an optical pickup device in which the deterioration of optical characteristics of a laser light beam due to a deviation of an optical axis can be smoothly suppressed with a simple structure. An objective lens becomes a finite system for only a laser light beam for CD (780 nm in wavelength). A three-wavelength laser is disposed such that an optical axis of the laser light beam for CD is aligned with an optical axis of an optical system including a polarization BS to an optical axis correcting element. In this case, the large deterioration of the optical properties of the laser light beam for CD, which cannot be sufficiently compensated even if the objective lens is tilted, does not occur. A stable recording and reproducing operation using the laser light beam for CD can be performed. At this time, although an optical axis of a laser light beam for DVD and an optical axis of a laser light beam for next-generation DVD are deviated from an optical axis of the optical system, the laser light beams are incident on the objective lens as infinite system light beams, so the deterioration of the optical properties due to the deviation can be suppressed by tilting the objective lens.

40. 发明授权

US08446809B2 Optical pickup device and optical disc device 失效
标题翻译：光拾取装置和光盘装置
公开(公告)号：US08446809B2
公开(公告)日：2013-05-21
申请号：US12763565
申请日：2010-04-20
申请人： Kenji Nagatomi
发明人： Kenji Nagatomi
IPC分类号： G11B7/00
CPC分类号： G11B7/0909 , G11B2007/0013
摘要： An optical pickup device imparts different astigmatisms from each other to light fluxes in four light flux areas A through D formed around an optical axis of laser light, out of the laser light reflected on a disc. The optical pickup device also changes the propagating directions of the light fluxes in the light flux areas A through D to separate the light fluxes in the light flux areas A through D from each other. A signal light area where only signal light exists is defined on a detection surface of a photodetector. Sensing portions are arranged at a position corresponding to the signal light area. Accordingly, only the signal light is received by the sensing portions, thereby suppressing deterioration of a detection signal resulting from stray light.
摘要翻译：光拾取装置将不同的散光彼此分配给在光盘上反射的激光中形成在激光的光轴周围的四个光通量区域A至D中的光通量。光拾取装置还改变光束区域A至D中的光束的传播方向，以将光通量区域A至D中的光束彼此分离。仅在信号光存在的信号光区域被限定在光检测器的检测表面上。感测部分布置在对应于信号光区域的位置处。因此，只有信号光被感测部分接收，从而抑制由杂散光引起的检测信号的劣化。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式