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1. 发明授权

US08660159B2 Laser diode, optical pickup device, optical disk apparatus, and optical communications equipment 有权
标题翻译：激光二极管，光学拾取装置，光盘装置和光通信设备
公开(公告)号：US08660159B2
公开(公告)日：2014-02-25
申请号：US12533840
申请日：2009-07-31
申请人： Kanji Takeuchi , Kenji Sahara
发明人： Kanji Takeuchi , Kenji Sahara
IPC分类号： H01S5/00
CPC分类号： H01S5/2231 , H01S5/2004 , H01S2301/18
摘要： A laser diode capable of reducing a radiating angle θ⊥ in the vertical direction, an optical pickup device, an optical disk apparatus, and optical communications equipment, all equipped with the laser diode which increases optical coupling efficiency. It has a first cladding layer of the first conductive type formed on a substrate, with an active layer on top of the first cladding layer and a second cladding layer of the second conductive type on top of the active layer. In at least the first or second cladding layer, it is formed of at least one optical guide layer having a higher refractive index than the first or second cladding layer and operating to expand a beam waist in the waveguide. This operation contributes to widening a region in which to shut up light, enabling a radiating angle θ⊥ in the vertical direction to be reduced.
摘要翻译：能够减小垂直方向上的辐射角度θ⊥的激光二极管，光学拾取装置，光盘装置和光通信设备，其全都配备有提高光耦合效率的激光二极管。它具有形成在基板上的第一导电类型的第一包覆层，在第一覆层的顶部具有有源层，在有源层顶部具有第二导电类型的第二覆层。在至少第一或第二包覆层中，由至少一个具有比第一或第二覆层更高的折射率的光导层形成，并且在波导中扩展束腰。该操作有助于加宽闭合光的区域，从而能够减小垂直方向的照射角度θ⊥。

2. 发明授权

US07379226B2 Variable optical attenuator 失效
标题翻译：可变光衰减器
公开(公告)号：US07379226B2
公开(公告)日：2008-05-27
申请号：US11881875
申请日：2007-07-30
申请人： Teruhisa Nakamura , Hidenori Nakata , Kenji Sahara , Yuko Ohta
发明人： Teruhisa Nakamura , Hidenori Nakata , Kenji Sahara , Yuko Ohta
IPC分类号： G02F1/09 , G02B5/30
CPC分类号： G02F1/093 , G02F2201/16 , G02F2201/17 , G02F2203/48
摘要： A variable optical attenuator comprising a separation/combination birefringent element, fixed polarization rotation means, a convex lens, variable polarization rotation means, and a mirror which are arranged in that order. The fixed polarization rotation means has a compensation film Faraday element placed in a cylindrical permanent magnet, and the variable polarization rotation means has a base film Faraday element that is placed outside the cylindrical permanent magnet, and an electromagnet applying a variable magnetic field thereto. Thereby, both the Faraday elements are magnetized in directions different from each other.
摘要翻译：一种可变光衰减器，包括按顺序布置的分离/组合双折射元件，固定偏振旋转装置，凸透镜，可变偏振旋转装置和反射镜。固定偏振旋转装置具有放置在圆筒形永磁体中的补偿膜法拉第元件，并且可变偏振旋转装置具有放置在圆筒形永磁体外部的基膜法拉第元件和向其施加可变磁场的电磁体。从而，两个法拉第元件在彼此不同的方向被磁化。

3. 发明申请

US20050163180A1 Laser diode, optical pickup device, optical disk apparatus, and optical communications equipment 有权
标题翻译：激光二极管，光学拾取装置，光盘装置和光通信设备
公开(公告)号：US20050163180A1
公开(公告)日：2005-07-28
申请号：US11087797
申请日：2005-03-23
申请人： Kanji Takeuchi , Kenji Sahara
发明人： Kanji Takeuchi , Kenji Sahara
IPC分类号： G11B7/125 , H01S5/20 , H01S5/223 , H01S5/343 , H01S5/00
CPC分类号： H01S5/2231 , H01S5/2004 , H01S2301/18
摘要： A laser diode capable of reducing a radiating angle θ⊥ in the vertical direction, an optical pickup device, an optical disk apparatus, and optical communications equipment, all equipped with the laser diode which increases optical coupling efficiency. It has a first cladding layer of the first conductive type formed on a substrate, with an active layer on top of the first cladding layer and a second cladding layer of the second conductive type on top of the active layer. In at least the first or second cladding layer, it is formed of at least one optical guide layer having a higher refractive index than the first or second cladding layer and operating to expand a beam waist in the waveguide. This operation contributes to widening a region in which to shut up light, enabling a radiating angle θ⊥ in the vertical direction to be reduced.
摘要翻译：能够减小垂直方向上的辐射角度θ⊥的激光二极管，光学拾取装置，光盘装置和光通信设备，其全都配备有提高光耦合效率的激光二极管。它具有形成在基板上的第一导电类型的第一包覆层，在第一覆层的顶部具有有源层，在有源层顶部具有第二导电类型的第二覆层。在至少第一或第二包覆层中，由至少一个具有比第一或第二覆层更高的折射率的光导层形成，并且在波导中扩展束腰。该操作有助于加宽闭合光的区域，从而能够减小垂直方向的照射角度θ⊥。

4. 发明授权

US07580435B2 Laser diode, optical pickup device, optical disk apparatus, and optical communications equipment 有权
标题翻译：激光二极管，光学拾取装置，光盘装置和光通信设备
公开(公告)号：US07580435B2
公开(公告)日：2009-08-25
申请号：US11087797
申请日：2005-03-23
申请人： Kanji Takeuchi , Kenji Sahara
发明人： Kanji Takeuchi , Kenji Sahara
IPC分类号： H01S5/00
CPC分类号： H01S5/2231 , H01S5/2004 , H01S2301/18
摘要： A laser diode capable of reducing a radiating angle θ⊥ in the vertical direction, an optical pickup device, an optical disk apparatus, and optical communications equipment, all equipped with the laser diode which increases optical coupling efficiency. It has a first cladding layer of the first conductive type formed on a substrate, with an active layer on top of the first cladding layer and a second cladding layer of the second conductive type on top of the active layer. In at least the first or second cladding layer, it is formed of at least one optical guide layer having a higher refractive index than the first or second cladding layer and operating to expand a beam waist in the waveguide. This operation contributes to widening a region in which to shut up light, enabling a radiating angle θ⊥ in the vertical direction to be reduced.
摘要翻译：能够减小垂直方向上的辐射角度θ⊥的激光二极管，光学拾取装置，光盘装置和光通信设备，其全都配备有提高光耦合效率的激光二极管。它具有形成在基板上的第一导电类型的第一包覆层，在第一覆层的顶部具有有源层，在有源层顶部具有第二导电类型的第二覆层。在至少第一或第二包覆层中，由至少一个具有比第一或第二覆层更高的折射率的光导层形成，并且在波导中扩展束腰。该操作有助于加宽闭合光的区域，从而能够减小垂直方向的照射角度θ⊥。

5. 发明授权

US5940423A Semiconductor laser, optical pickup device, and optical record and/or reproducing apparatus 失效
标题翻译：半导体激光器，光学拾取装置和光学记录和/或再现装置
公开(公告)号：US5940423A
公开(公告)日：1999-08-17
申请号：US873106
申请日：1997-06-11
申请人： Kenji Sahara
发明人： Kenji Sahara
IPC分类号： H01S5/00 , H01S5/20 , H01S5/223 , H01S5/323 , H01S3/19
CPC分类号： H01S5/2231 , H01S5/204 , H01S5/32316
摘要： A semiconductor laser comprises: a substrate, a first cladding layer on the substrate, an active layer on the first cladding layer, a second cladding layer on the active layer; and the second cladding layer has a plurality of steps of equivalent complex index of refraction disposed to be parallel to p-n junction direction and to be perpendicular to a cavity direction. In an optical pickup device using a semiconductor laser as a light source thereof, the semiconductor laser comprises: a substrate, a first cladding layer on the substrate, an active layer on the first cladding layer, a second cladding layer on the active layer; and the second cladding layer has a plurality of equivalent complex index of refraction disposed to be parallel to p-n junction direction and to be perpendicular to a cavity direction. In an optical record and/or reproducing apparatus using semiconductor laser as a light source thereof, the semiconductor laser comprises: a substrate, a first cladding layer on the substrate, an active layer on the first cladding layer, a second cladding layer on the active layer; and the second cladding layer has a plurality of steps of equivalent complex index of refraction disposed to be parallel to p-n junction direction and to be perpendicular to a cavity direction.
摘要翻译：半导体激光器包括：基板，基板上的第一包层，第一包层上的有源层，有源层上的第二包层; 并且所述第二包层具有多个等效复折射率的设置成平行于p-n结方向并垂直于空腔方向的步骤。在使用半导体激光器作为其光源的光拾取装置中，半导体激光器包括：基板，基板上的第一包层，第一包层上的有源层，有源层上的第二包层; 并且所述第二包层具有多个等效复折射率，其设置为平行于p-n结方向并且垂直于空腔方向。在使用半导体激光器作为其光源的光学记录和/或再现装置中，半导体激光器包括：基板，基板上的第一包层，第一包层上的有源层，活性层上的第二包层层; 并且所述第二包层具有多个等效复折射率的设置成平行于p-n结方向并垂直于空腔方向的步骤。

6. 发明授权

US5708645A Semiconductor laser device to detect a divided reflected light beam 失效
标题翻译：半导体激光装置检测分光反射光束
公开(公告)号：US5708645A
公开(公告)日：1998-01-13
申请号：US730142
申请日：1996-10-15
申请人： Kenji Sahara , Hironobu Narui , Masato Doi , Osamu Matsuda
发明人： Kenji Sahara , Hironobu Narui , Masato Doi , Osamu Matsuda
IPC分类号： G11B11/10 , G11B7/12 , G11B11/105 , H01L31/10 , H01S5/00 , H01S5/026 , G11B7/13
CPC分类号： G11B7/1365 , G11B11/10543 , G11B7/123
摘要： An optical device for detecting a magneto-optical signal can be simplified and miniaturized in arrangement. An optical device for detecting a magneto-optical signal includes an optical element in which a light-emitting portion and a light receiving portion are closely disposed on a common substrate and in which reflected-back light obtained from a magneto-optical medium after light from the light-emitting portion was reflected on the magneto-optical medium is detected at a position near confocal position by the light receiving portion and another light receiving element. The reflected-back light from the magneto-optical medium is divided. One reflected-back light is detected by the light receiving portion of the optical element and the other reflected-back light is detected by another light receiving element.
摘要翻译：用于检测磁光信号的光学装置可以被简化并且在布置中小型化。用于检测磁光信号的光学装置包括光学元件，其中发光部分和光接收部分紧密地布置在公共基板上，并且其中从光电介质获得的反射光在来自在由光接收部和另一光接收元件接近共焦位置的位置处检测出在光磁介质上反射的发光部。来自磁光介质的反射光被分开。一个反射光由光学元件的光接收部分检测，另一个反射光被另一个光接收元件检测。

7. 发明申请

US20090304037A1 Laser Diode, Optical Pickup Device, Optical Disk Apparatus, and Optical Communications Equipment 有权
标题翻译：激光二极管，光学拾取装置，光盘装置和光通信设备
公开(公告)号：US20090304037A1
公开(公告)日：2009-12-10
申请号：US12533840
申请日：2009-07-31
申请人： Kanji Takeuchi , Kenji Sahara
发明人： Kanji Takeuchi , Kenji Sahara
IPC分类号： H01S5/00
CPC分类号： H01S5/2231 , H01S5/2004 , H01S2301/18
摘要： A laser diode capable of reducing a radiating angle θ⊥ in the vertical direction, an optical pickup device, an optical disk apparatus, and optical communications equipment, all equipped with the laser diode which increases optical coupling efficiency. It has a first cladding layer of the first conductive type formed on a substrate, with an active layer on top of the first cladding layer and a second cladding layer of the second conductive type on top of the active layer. In at least the first or second cladding layer, it is formed of at least one optical guide layer having a higher refractive index than the first or second cladding layer and operating to expand a beam waist in the waveguide. This operation contributes to widening a region in which to shut up light, enabling a radiating angle θ⊥ in the vertical direction to be reduced.
摘要翻译：能够减小垂直方向上的辐射角度θ⊥的激光二极管，光学拾取装置，光盘装置和光通信设备，其全都配备有提高光耦合效率的激光二极管。它具有形成在基板上的第一导电类型的第一包覆层，在第一覆层的顶部具有有源层，在有源层顶部具有第二导电类型的第二覆层。在至少第一或第二包覆层中，由至少一个具有比第一或第二覆层更高的折射率的光导层形成，并且在波导中扩展束腰。该操作有助于加宽闭合光的区域，从而能够减小垂直方向的照射角度θ⊥。

8. 发明授权

US5920587A Optical device and method of manufacturing the same 失效
标题翻译：光学装置及其制造方法
公开(公告)号：US5920587A
公开(公告)日：1999-07-06
申请号：US801169
申请日：1997-02-18
申请人： Hironobu Narui , Masato Doi , Kenji Sahara , Yoshinobu Higuchi
发明人： Hironobu Narui , Masato Doi , Kenji Sahara , Yoshinobu Higuchi
IPC分类号： H01S5/00 , H01S5/026 , H01S5/18 , H01S3/18
CPC分类号： H01S5/0264 , H01S5/0262 , H01S5/18
摘要： A semiconductor laser device having light output monitoring light-receiving portion can be fabricated monolithically. A semiconductor laser element (LD) composed of a first cladding layer (22), an active layer (23) and a second cladding layer (24) is formed on a semiconductor substrate (21). A light-receiving portion (PD.sub.1) of a pn junction is formed on the semiconductor substrate (21) disposed behind the semiconductor laser element (LD) by diffusion or selective growth.
摘要翻译：具有光输出监视光接收部分的半导体激光器件可以被整体地制造。在半导体衬底（21）上形成由第一覆层（22），有源层（23）和第二覆层（24）构成的半导体激光元件（LD）。通过扩散或选择性生长，在设置在半导体激光元件（LD）后面的半导体衬底（21）上形成pn结的光接收部分（PD1）。

9. 发明授权

US5883913A Optical device 失效
标题翻译：光学装置
公开(公告)号：US5883913A
公开(公告)日：1999-03-16
申请号：US513760
申请日：1995-08-21
申请人： Masato Doi , Hironobu Narui , Kenji Sahara , Osamu Matsuda
发明人： Masato Doi , Hironobu Narui , Kenji Sahara , Osamu Matsuda
IPC分类号： G02B6/12 , G02B6/42 , G11B7/09 , G11B7/12 , G11B7/125 , G11B7/13 , H01S5/026 , H01S5/18 , H01S3/18
CPC分类号： G11B7/127 , G02B6/4246 , G11B7/123 , G11B7/133 , H01S5/0262 , G02B2006/12104 , G02B2006/12121 , G02B2006/12123 , G11B7/0912 , H01S5/18
摘要： An optical device has an optical element 21 comprising a light-emitting region 1 and a light-detecting region 4 disposed closely to each other on a common substrate 9. Returning light L.sub.R from an irradiated medium which is irradiated with light L emitted by the light-emitting region 1 is detected by the light-detecting region 4. The returning light is applied to a light-detecting region 4 at an incident angle .alpha. in the range of 0.degree.
摘要翻译： PCT No.PCT / JP94 / 02178 Sec。 371日期：1996年3月25日 102（e）1996年3月25日PCT 1993年12月27日PCT公布。 WO95 / 18444 PCT出版物日期1995年7月6日光学装置具有光学元件21，该光学元件21包括在公共基板9上彼此紧密配置的发光区域1和光检测区域4.从照射光的照射介质返回光LR 由光检测区域4检测由发光区域1发射的光。返回的光以0°<90°的入射角α被施加到光检测区域4。

10. 发明授权

US5679947A Optical device having a light emitter and a photosensor on the same optical axis 失效
标题翻译：在同一光轴上具有光发射器和光传感器的光学装置
公开(公告)号：US5679947A
公开(公告)日：1997-10-21
申请号：US613858
申请日：1996-03-11
申请人： Masato Doi , Hironobu Narui , Osamu Matsuda , Kenji Sahara
发明人： Masato Doi , Hironobu Narui , Osamu Matsuda , Kenji Sahara
IPC分类号： G11B11/10 , G11B7/12 , G11B7/125 , G11B7/13 , G11B11/105 , H01S5/026 , H01S5/18 , H01J3/14
CPC分类号： G11B7/127 , G11B11/10545 , G11B7/123 , G11B7/133 , H01S5/0262 , H01S5/18
摘要： An optical device structure can be simplified and miniaturized on the whole. A fabrication of optical device can be simplified and the optical device can be improved in reliability. The optical device can increase its output, operate a light emitting light source with a reduced power and reduce a power consumption by increasing a quantity of reflected-back light to a photosensor device, i.e., a quantity of photosensed light. An optical device includes a light emitting section (1), a radiated section (2), a converging means (3) and a photosensor section (4). Light emitted from the light emitting section (1) is converged and radiated on the radiated section (2) by the converging means (3). Reflected-back light (L.sub.R) reflected from the radiated section (2) is converged and the photosensor section (4) is disposed near a confocal of the converging means (3) concerning reflected-back light from the radiated section (2). Light emitted from the light emitting section (1) is passed through a path of the same axis and photosensed by the photosensor section (4) as shown by a one-dot chain line (a) representing the optical axis before and after the emitted light is reflected by the radiated section (2).
摘要翻译：光学装置结构整体上可以简化和小型化。可以简化光学器件的制造，并且可以提高光学器件的可靠性。光学装置可以增加其输出，通过增加向光电传感器装置的反射光量（即一定数量的光照射）来降低功率来操作发光光源并降低功率消耗。光学装置包括发光部分（1），辐射部分（2），会聚装置（3）和光电传感器部分（4）。从发光部（1）发射的光通过会聚装置（3）会聚并辐射在辐射部（2）上。从辐射部分（2）反射的反射光（LR）会聚，并且光电传感器部分（4）设置在会聚装置（3）的共焦点附近，涉及来自辐射部分（2）的反射光。从光发射部分（1）发射的光通过相同轴线的路径并由光电传感器部分（4）照射，如在发射光之前和之后的表示光轴的单点划线（a）所示被辐射部分（2）反射。

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