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1. 发明授权

US08154978B2 Optical pickup apparatus 失效
标题翻译：光拾取装置
公开(公告)号：US08154978B2
公开(公告)日：2012-04-10
申请号：US12040518
申请日：2008-02-29
申请人： Tohru Hotta , Ryoichi Kawasaki , Kenji Kan , Hiroyuki Shindo
发明人： Tohru Hotta , Ryoichi Kawasaki , Kenji Kan , Hiroyuki Shindo
IPC分类号： G11B7/00 , G02B1/10
CPC分类号： G11B7/1374 , G11B7/139
摘要： An optical pickup apparatus comprising: an objective lens configured to focus laser light having the Gaussian distribution properties emitted from a laser diode to a signal recording layer of an optical disc; and an adjustment coating formed on a surface of an incident face of the objective lens on which the laser light is to be made incident, the adjustment coating being configured to adjust transmittance of the laser light passing through the objective lens, the adjustment coating being formed on the surface of the incident face such that the transmittance is lowered as a numerical aperture of the objective lens is reduced.
摘要翻译：一种光学拾取装置，包括：物镜，被配置为将具有从激光二极管发射的高斯分布特性的激光聚焦到光盘的信号记录层; 以及形成在要使激光入射的物镜的入射面的表面上的调整涂层，调整涂层被配置为调节通过物镜的激光的透射率，形成调整涂层在入射面的表面上，由于物镜的数值孔径减小，透射率降低。

2. 发明申请

US20080212452A1 OPTICAL PICKUP APPARATUS 失效
公开(公告)号：US20080212452A1
公开(公告)日：2008-09-04
申请号：US12040518
申请日：2008-02-29
申请人： Tohru Hotta , Ryoichi Kawasaki , Kenji Kan , Hiroyuki Shindo
发明人： Tohru Hotta , Ryoichi Kawasaki , Kenji Kan , Hiroyuki Shindo
IPC分类号： G11B7/00 , G02B1/10
CPC分类号： G11B7/1374 , G11B7/139
摘要： An optical pickup apparatus comprising: an objective lens configured to focus laser light having the Gaussian distribution properties emitted from a laser diode to a signal recording layer of an optical disc; and an adjustment coating formed on a surface of an incident face of the objective lens on which the laser light is to be made incident, the adjustment coating being configured to adjust transmittance of the laser light passing through the objective lens, the adjustment coating being formed on the surface of the incident face such that the transmittance is lowered as a numerical aperture of the objective lens is reduced.
摘要翻译：一种光学拾取装置，包括：物镜，被配置为将具有从激光二极管发射的高斯分布特性的激光聚焦到光盘的信号记录层; 以及形成在要使激光入射的物镜的入射面的表面上的调整涂层，调整涂层被配置为调节通过物镜的激光的透射率，形成调整涂层在入射面的表面上，由于物镜的数值孔径减小，透射率降低。

3. 发明授权

US08363533B2 Optical pickup apparatus 失效
标题翻译：光拾取装置
公开(公告)号：US08363533B2
公开(公告)日：2013-01-29
申请号：US13416858
申请日：2012-03-09
申请人： Tohru Hotta , Ryoichi Kawasaki , Kenji Kan , Hiroyuki Shindo
发明人： Tohru Hotta , Ryoichi Kawasaki , Kenji Kan , Hiroyuki Shindo
IPC分类号： G11B7/00 , G02B1/10
CPC分类号： G11B7/1374 , G11B7/139
摘要： An optical pickup apparatus includes an objective lens having a numeric aperture and an incident face. An antireflection coating is formed on the incident face. A collimating lens converts laser light from a laser diode into parallel light, and causes the parallel light to be made incident on the incident face through the antireflection coating. The thickness of the antireflection coating causes a transmittance of laser light that enters the objective lens to be: set at a first predetermined transmittance value, when the numeric aperture is between zero and a first predetermined numeric aperture value; set to correlate linearly with the numeric aperture when the numeric aperture is between the first predetermined numeric aperture value and a second predetermined numeric aperture value; and set at a second predetermined transmittance value, when the numeric aperture is between the second predetermined numeric aperture value and a third predetermined numeric aperture value.
摘要翻译：光学拾取装置包括具有数字孔径和入射面的物镜。在入射面上形成防反射涂层。准直透镜将来自激光二极管的激光转换为平行光，并使平行光通过抗反射涂层入射到入射面上。当数值孔径在零和第一预定数值孔径值之间时，防反射涂层的厚度使进入物镜的激光的透射率设定为第一预定透射率值; 当数值孔径在第一预定数值孔径值和第二预定数值孔径值之间时，被设置为与数字孔径线性相关; 并且当所述数值孔径在所述第二预定数值孔径值和第三预定数值孔径值之间时，设定在第二预定透射率值。

4. 发明申请

US20120170441A1 OPTICAL PICKUP APPARATUS 失效
公开(公告)号：US20120170441A1
公开(公告)日：2012-07-05
申请号：US13416858
申请日：2012-03-09
申请人： Tohru Hotta , Ryoichi Kawasaki , Kenji Kan , Hiroyuki Shindo
发明人： Tohru Hotta , Ryoichi Kawasaki , Kenji Kan , Hiroyuki Shindo
IPC分类号： G11B7/1376 , G11B7/1374
CPC分类号： G11B7/1374 , G11B7/139
摘要： An optical pickup apparatus includes an objective lens having a numeric aperture and an incident face. An antireflection coating is formed on the incident face. A collimating lens converts laser light from a laser diode into parallel light, and causes the parallel light to be made incident on the incident face through the antireflection coating. The thickness of the antireflection coating causes a transmittance of laser light that enters the objective lens to be: set at a first predetermined transmittance value, when the numeric aperture is between zero and a first predetermined numeric aperture value; set to correlate linearly with the numeric aperture when the numeric aperture is between the first predetermined numeric aperture value and a second predetermined numeric aperture value; and set at a second predetermined transmittance value, when the numeric aperture is between the second predetermined numeric aperture value and a third predetermined numeric aperture value.
摘要翻译：光学拾取装置包括具有数字孔径和入射面的物镜。在入射面上形成防反射涂层。准直透镜将来自激光二极管的激光转换为平行光，并使平行光通过抗反射涂层入射到入射面上。当数值孔径在零和第一预定数值孔径值之间时，防反射涂层的厚度使进入物镜的激光的透射率设定为第一预定透射率值; 当数值孔径在第一预定数值孔径值和第二预定数值孔径值之间时，被设置为与数字孔径线性相关; 并且当所述数值孔径在所述第二预定数值孔径值和第三预定数值孔径值之间时，设定在第二预定透射率值。

5. 发明授权

US06907053B2 Semiconductor laser device, and optical pickup apparatus using the device 失效
标题翻译：半导体激光装置以及使用该装置的光拾取装置
公开(公告)号：US06907053B2
公开(公告)日：2005-06-14
申请号：US10183509
申请日：2002-06-28
申请人： Kenji Ohgiyama , Kiyoaki Tsumura , Koji Yamashita , Toshio Takeuchi , Susumu Ishida , Kenji Kan
发明人： Kenji Ohgiyama , Kiyoaki Tsumura , Koji Yamashita , Toshio Takeuchi , Susumu Ishida , Kenji Kan
IPC分类号： G11B7/08 , G11B7/125 , H01S5/00 , H01S5/022 , H01S5/024 , H01S3/04
CPC分类号： H01S5/02244 , G11B7/082 , G11B7/127 , H01L2224/48091 , H01L2224/48247 , H01S5/005 , H01S5/02216 , H01S5/02292 , H01S5/02469 , H01L2924/00014
摘要： A semiconductor laser element and a protective wall surrounding the element are provided on the surface of a metal frame of a semiconductor laser device. Circumferential portions are provided on an outer periphery of the metal frame for rotating the optical axis of light originating from a light-emitting point of the semiconductor laser element to a direction along the surface of the metal frame. By way of a guide of an optical pickup base corresponding to the circumferential portions, the semiconductor laser device is mounted on the optical pickup base.
摘要翻译：半导体激光元件和围绕元件的保护壁设置在半导体激光器件的金属框架的表面上。在金属框架的外周设置有圆周部分，用于将源自半导体激光元件的发光点的光的光轴旋转到沿着金属框架的表面的方向。通过对应于圆周部分的光学拾取器基座的引导，半导体激光器件安装在光学拾取器基座上。

6. 发明授权

US07616550B2 Optical pickup unit 失效
标题翻译：光学拾取单元
公开(公告)号：US07616550B2
公开(公告)日：2009-11-10
申请号：US11424501
申请日：2006-06-15
申请人： Kenji Kan
发明人： Kenji Kan
IPC分类号： G11B7/135
CPC分类号： G11B7/1359 , G11B7/1275 , G11B7/1369 , G11B7/1374 , G11B7/1376 , G11B7/1378 , G11B7/1381 , G11B7/13925
摘要： An optical pickup unit is disclosed that comprises a first light-emitting element capable of emitting first-wavelength light; a second light-emitting element capable of emitting second-wavelength light whose wavelength is different from that of the first-wavelength light; a polarizing mirror transmitting or reflecting the first-wavelength light and reflecting the second-wavelength light; a first objective lens converging the first-wavelength light on a first medium; and a second objective lens converging the first-wavelength light or the second-wavelength light on a second medium.
摘要翻译：公开了一种光拾取单元，其包括能够发射第一波长光的第一发光元件; 能够发射波长与第一波长光的波长不同的第二波长光的第二发光元件; 透射或反射第一波长光并反射第二波长光的偏振镜; 将第一波长光会聚在第一介质上的第一物镜; 以及将第一波长光或第二波长光会聚在第二介质上的第二物镜。

7. 发明申请

US20050047310A1 Spherical aberration corrector plate comprising two wedge-shaped plates enabled to relatively shift 审中-公开
标题翻译：球面像差校正板包括两个能够相对移动的楔形板
公开(公告)号：US20050047310A1
公开(公告)日：2005-03-03
申请号：US10881831
申请日：2004-06-29
申请人： Kenji Kan
发明人： Kenji Kan
IPC分类号： G02B13/00 , G11B7/00 , G11B7/125 , G11B7/135 , G11B7/1365 , G11B7/1369 , G11B7/1392
CPC分类号： G11B7/1369 , G11B7/0948 , G11B7/1365 , G11B7/13925 , G11B7/13927
摘要： A spherical aberration corrector plate has two wedge-shaped plates having inclined planes opposed to each other. The two wedge-shaped plates have a constant refractive index and are enabled to relatively shift in at least a direction perpendicular to an optical axis. The two wedge-shaped plates are shifted with the inclined planes in contact with each other. Alternatively, the two wedge-shaped plates may be put into a state where the inclined planes are in contact with each other when the two wedge-shaped plate extremely come close to each other. Otherwise, the two wedge-shaped plates may be put into a state where the inclined plates are apart from each other.
摘要翻译：球面像差校正板具有两个彼此相对的倾斜平面的楔形板。两个楔形板具有恒定的折射率，并且能够在垂直于光轴的至少一个方向上相对移动。两个楔形板与倾斜平面彼此接触地移动。或者，当两个楔形板彼此非常接近时，两个楔形板可以进入彼此接触的状态。否则，两个楔形板可以进入倾斜板彼此分开的状态。

8. 发明授权

US6134210A Laser beam emitting device and an optical pickup provided with the laser beam emitting device 失效
标题翻译：激光束发射装置和设置有激光束发射装置的光学拾取器
公开(公告)号：US6134210A
公开(公告)日：2000-10-17
申请号：US87320
申请日：1998-05-29
申请人： Osamu Masakado , Kenji Kan
发明人： Osamu Masakado , Kenji Kan
IPC分类号： G11B7/135 , G11B7/125 , G11B7/13 , H01S5/022 , H01S5/0683 , G11B7/00
CPC分类号： G11B7/131 , G11B7/126 , G11B7/133 , H01S5/005 , H01S5/0683
摘要： A laser beam emitting device has a laser beam source for emitting a laser beam having a prescribed effective optical path region; and a light-receiving element positioned outside the effective optical path region of the laser beam emitted by the laser beam source and having a plurality of light-receiving regions for detecting intensity of the emitted laser beam. In this device, the output of the laser beam source is adjusted in response to the intensity of the emitted laser beam detected by at least one of the plurality of the light-receiving regions of the light-receiving element. The light-receiving element includes a first light-receiving region located at a position near the optical axis and a second light-receiving region located at a position farther from the optical axis than the position of the first light-receiving region. The arrangement of the first and second light-receiving regions can provide at least three sensitivity levels by selecting one of electrical current values outputted from the plurality of light-receiving regions or any combination of these electrical current values. The laser beam emitting device is provided in an optical pickup for use in an optical disc drive such as CD-R drive.
摘要翻译：激光发射装置具有用于发射具有规定的有效光路区域的激光束的激光束源; 以及光接收元件，其位于由激光束源发射的激光束的有效光路区域的外侧，并具有用于检测发射的激光束的强度的多个光接收区域。在该装置中，响应于由受光元件的多个光接收区域中的至少一个检测到的发射激光束的强度来调节激光束源的输出。光接收元件包括位于靠近光轴的位置处的第一光接收区域和位于比第一光接收区域的位置更远离光轴的位置处的第二光接收区域。第一和第二光接收区域的布置可以通过选择从多个光接收区域输出的电流值之一或这些电流值的任何组合来提供至少三个灵敏度水平。激光束发射装置设置在用于诸如CD-R驱动器的光盘驱动器中的光学拾取器中。

9. 发明申请

US20060285473A1 OPTICAL PICKUP UNIT 失效
标题翻译：光学拾取单元
公开(公告)号：US20060285473A1
公开(公告)日：2006-12-21
申请号：US11424501
申请日：2006-06-15
申请人： Kenji Kan
发明人： Kenji Kan
IPC分类号： G11B7/135
CPC分类号： G11B7/1359 , G11B7/1275 , G11B7/1369 , G11B7/1374 , G11B7/1376 , G11B7/1378 , G11B7/1381 , G11B7/13925
摘要： An optical pickup unit is disklosed that comprises a first light-emitting element capable of emitting first-wavelength light; a second light-emitting element capable of emitting second-wavelength light whose wavelength is different from that of the first-wavelength light; a polarizing mirror transmitting or reflecting the first-wavelength light and reflecting the second-wavelength light; a first objective lens converging the first-wavelength light on a first medium; and a second objective lens converging the first-wavelength light or the second-wavelength light on a second medium.
摘要翻译：一种光拾取单元，其包括能够发射第一波长光的第一发光元件; 能够发射波长与第一波长光的波长不同的第二波长光的第二发光元件; 透射或反射第一波长光并反射第二波长光的偏振镜; 将第一波长光会聚在第一介质上的第一物镜; 以及将第一波长光或第二波长光会聚在第二介质上的第二物镜。

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