公开(公告)号：US08547814B2

公开(公告)日：2013-10-01

申请号：US13228222

申请日：2011-09-08

申请人： Shinzoh Murakami ,  Mototaka Taneya ,  Takahide Ishiguro ,  Katsushige Masui ,  Satoru Fukumoto ,  Takeshi Horiguchi

发明人： Shinzoh Murakami ,  Mototaka Taneya ,  Takahide Ishiguro ,  Katsushige Masui ,  Satoru Fukumoto ,  Takeshi Horiguchi

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/1275

摘要： In a diffractive element, its grating pattern is so configured that a diffraction angle of a diffracted light beam of a light source that is subject to the first-order diffraction in a diffraction area is matched with an angle of a light beam passing through the diffractive area emitted from a light source and a light source position is matched with a light originating point of the light source that emits a light beam to be transmitted, and the center of light intensity distribution is matched with that of the light source passing through the diffractive element by inclining an optical axis of the light source. A position of the diffractive element is adjusted based on an electric current value generated when a reflected return path light beam of the light source is diffracted by the diffractive element and enters the light source.

摘要翻译： 在衍射元件中，其光栅图案被配置为使得衍射区域中经受一次衍射的光源的衍射光束的衍射角与通过衍射的光束的角度相匹配 从光源和光源位置发射的区域与发射要透射的光束的光源的发光点相匹配，并且光强度分布的中心与通过衍射的光源的光中心匹配 元件通过倾斜光源的光轴。 基于当光源的反射返回路径光束被衍射元件衍射并进入光源时产生的电流值来调节衍射元件的位置。

公开(公告)号：US20120063281A1

公开(公告)日：2012-03-15

申请号：US13228222

申请日：2011-09-08

申请人： Shinzoh MURAKAMI ,  Mototaka Taneya ,  Takahide Ishigro ,  Katsushige Masui ,  Satoru Fukumoto ,  Takeshi Horiguchi

发明人： Shinzoh MURAKAMI ,  Mototaka Taneya ,  Takahide Ishigro ,  Katsushige Masui ,  Satoru Fukumoto ,  Takeshi Horiguchi

IPC分类号： G11B7/125 ,  H01L21/68 ,  G02B27/42

CPC分类号： G11B7/1353 ,  G11B7/1275

摘要： In a diffractive element, its grating pattern is so configured that a diffraction angle of a diffracted light beam of a light source that is subject to the first-order diffraction in a diffraction area is matched with an angle of a light beam passing through the diffractive area emitted from a light source and a light source position is matched with a light originating point of the light source that emits a light beam to be transmitted, and the center of light intensity distribution is matched with that of the light source passing through the diffractive element by inclining an optical axis of the light source. A position of the diffractive element is adjusted based on an electric current value generated when a reflected return path light beam of the light source is diffracted by the diffractive element and enters the light source.

摘要翻译： 在衍射元件中，其光栅图案被配置为使得衍射区域中经受一次衍射的光源的衍射光束的衍射角与通过衍射的光束的角度相匹配 从光源和光源位置发射的区域与发射要透射的光束的光源的发光点相匹配，并且光强度分布的中心与通过衍射的光源的光中心匹配 元件通过倾斜光源的光轴。 基于当光源的反射返回路径光束被衍射元件衍射并进入光源时产生的电流值来调节衍射元件的位置。

公开(公告)号：US08059515B2

公开(公告)日：2011-11-15

申请号：US12581434

申请日：2009-10-19

申请人： Shinzoh Murakami ,  Takehiro Shiomoto ,  Katsushige Masui ,  Osamu Hamaoka

发明人： Shinzoh Murakami ,  Takehiro Shiomoto ,  Katsushige Masui ,  Osamu Hamaoka

IPC分类号： G11B7/135

CPC分类号： G11B7/0948 ,  G11B7/0903 ,  G11B7/131 ,  G11B7/1353

摘要： Provided is an optical pickup apparatus that can be made compact and is capable of producing stable push-pull signals. The optical pickup apparatus includes a light source, an objective lens, a diffraction element, a light-receiving element, and a control-driving section. The diffraction element receives light reflected from an optical recording medium. The light-receiving element receives light beams diffracted by the diffraction element. The light-receiving element has a plurality of light-receiving regions. The light-receiving region produces an output signal responsive to the quantity of the incident light beam. The control-driving section obtains differences among the output signals from a plurality of the light-receiving regions by calculation to derive a push-pull signal, and drives the objective lens under control on the basis of the push-pull signal.

摘要翻译： 提供一种可以制造得紧凑并且能够产生稳定的推挽信号的光学拾取装置。 光拾取装置包括光源，物镜，衍射元件，光接收元件和控制驱动部。 衍射元件接收从光记录介质反射的光。 光接收元件接收由衍射元件衍射的光束。 光接收元件具有多个光接收区域。 光接收区域响应入射光束的量产生输出信号。 控制驱动部通过计算得到来自多个受光区域的输出信号之间的差异，得到推挽信号，并根据推挽信号驱动物镜进行控制。

公开(公告)号：US20100097919A1

公开(公告)日：2010-04-22

申请号：US12581434

申请日：2009-10-19

申请人： Shinzoh MURAKAMI ,  Takehiro Shiomoto ,  Katsushige Masui ,  Osamu Hamaoka

发明人： Shinzoh MURAKAMI ,  Takehiro Shiomoto ,  Katsushige Masui ,  Osamu Hamaoka

IPC分类号： G11B7/135

CPC分类号： G11B7/0948 ,  G11B7/0903 ,  G11B7/131 ,  G11B7/1353

摘要： Provided is an optical pickup apparatus that can be made compact and is capable of producing stable push-pull signals. The optical pickup apparatus includes a light source, an objective lens, a diffraction element, a light-receiving element, and a control-driving section. The diffraction element receives light reflected from an optical recording medium. The light-receiving element receives light beams diffracted by the diffraction element. The light-receiving element has a plurality of light-receiving regions. The light-receiving region produces an output signal responsive to the quantity of the incident light beam. The control-driving section obtains differences among the output signals from a plurality of the light-receiving regions by calculation to derive a push-pull signal, and drives the objective lens under control on the basis of the push-pull signal.

摘要翻译： 提供一种可以制造得紧凑并且能够产生稳定的推挽信号的光学拾取装置。 光拾取装置包括光源，物镜，衍射元件，光接收元件和控制驱动部。 衍射元件接收从光记录介质反射的光。 光接收元件接收由衍射元件衍射的光束。 光接收元件具有多个光接收区域。 光接收区域响应入射光束的量产生输出信号。 控制驱动部通过计算得到来自多个受光区域的输出信号之间的差异，得到推挽信号，并根据推挽信号驱动物镜进行控制。

公开(公告)号：US06847665B2

公开(公告)日：2005-01-25

申请号：US10101696

申请日：2002-03-21

申请人： Shigehiro Yamada ,  Kazuhiro Tsuchida ,  Katsushige Masui ,  Toshiya Nagahama ,  Takahide Ishiguro ,  Naotaka Ohtsuka

发明人： Shigehiro Yamada ,  Kazuhiro Tsuchida ,  Katsushige Masui ,  Toshiya Nagahama ,  Takahide Ishiguro ,  Naotaka Ohtsuka

IPC分类号： G11B7/125 ,  H01L31/02 ,  H01S5/02 ,  H01S5/022 ,  H01S5/042 ,  H01S3/00

CPC分类号： H01S5/02248 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01S5/02276 ,  H01S5/042 ,  H01S5/0683 ,  H01L2924/00014

摘要： Not only a semiconductor laser element and a photodetector but also a capacitor connected to the photodetector is housed in a package to thereby reduce the distance from the capacitor to the photodetector so that power source noise is efficiently suppressed by the capacitor and a power source noise suppression effect is improved.

摘要翻译： 不仅半导体激光器元件和光电检测器，而且连接到光电检测器的电容器也被封装在封装中，从而减小了从电容器到光电检测器的距离，使得电源噪声被电容器有效地抑制，并且电源噪声抑制 效果提高。

公开(公告)号：US20060018212A1

公开(公告)日：2006-01-26

申请号：US11176938

申请日：2005-07-08

申请人： Kazuhiro Tsuchida ,  Satoru Fukumoto ,  Katsushige Masui ,  Kazunori Matsubara ,  Keiji Sakai

发明人： Kazuhiro Tsuchida ,  Satoru Fukumoto ,  Katsushige Masui ,  Kazunori Matsubara ,  Keiji Sakai

IPC分类号： G11B7/00

CPC分类号： G11B7/131 ,  G11B7/0912 ,  G11B7/1353

摘要： A focus error detecting device which can realize stable focus servo without causing a deterioration in the quality of a signal, is provided. The focus error detecting device outputs a reflected light detection result by an optical recording medium to control a distance between an objective lens and the optical recording medium. With respect to the focus error detecting device, between the objective lens and two split light-receiving segments, is provided a hologram element for bending an optical path so that part of light reflected by the optical recording medium enters the two split light-receiving segments, and splitting a light beam of reflected light entering the two split light-receiving segments into a plurality of parts.

摘要翻译： 提供一种能够实现稳定的聚焦伺服而不会导致信号质量下降的聚焦误差检测装置。 聚焦误差检测装置通过光学记录介质输出反射光检测结果，以控制物镜和光记录介质之间的距离。 关于聚焦误差检测装置，在物镜和两个分开的光接收部分之间设置有用于弯曲光路的全息元件，使得由光记录介质反射的光的一部分进入两个分开的光接收部分 并且将进入两个分开的光接收段的反射光的光束分成多个部分。

公开(公告)号：US07136409B2

公开(公告)日：2006-11-14

申请号：US10812317

申请日：2004-03-30

申请人： Masahiro Ikehara ,  Katsushige Masui ,  Kazuhiro Tsuchida ,  Keiji Sakai

发明人： Masahiro Ikehara ,  Katsushige Masui ,  Kazuhiro Tsuchida ,  Keiji Sakai

IPC分类号： H01S3/08 ,  G11B7/12

CPC分类号： G11B7/1353 ,  G02B27/106 ,  G02B27/1086 ,  G02B27/145 ,  G02B27/283 ,  G11B7/123 ,  G11B7/131 ,  G11B7/1381 ,  H01S5/02212 ,  H01S5/02248 ,  H01S5/02296

摘要： In this semiconductor laser device, a polarization hologram transmits an outgoing beam directed from a semiconductor laser chip to an optical disk as a forward beam without diffracting the beam, and diffracts a backward beam of the laser beam, which is a return beam of the forward beam that has been reflected by the optical disk, so that the backward beam is deflected from a direction directed toward the semiconductor laser chip part and further directed toward first, second photoreception parts. Therefore, optical loss on the forward way from the semiconductor laser chip to the optical disk can be reduced, and return light to the semiconductor laser chip can be suppressed, so that a high-power, high-sensitivity semiconductor laser device can be realized.

摘要翻译： 在该半导体激光器件中，偏振全息图将来自半导体激光器芯片的出射光束作为前向光束传输到光盘而不衍射光束，并且衍射作为向前的返回光束的激光束的反向光束 光束被反射的光束，使得反射光束从朝向半导体激光器芯片部分的方向偏转并进一步朝向第一，第二光接收部分。 因此，可以减少从半导体激光器芯片向光盘的正向移动的光损耗，并且可以抑制向半导体激光器芯片的返回光，从而可以实现高功率，高灵敏度的半导体激光器件。

公开(公告)号：US20050141391A1

公开(公告)日：2005-06-30

申请号：US11060680

申请日：2005-02-16

申请人： Tetsuo Ueyama ,  Keiji Sakai ,  Yukio Kurata ,  Katsushige Masui ,  Naotaka Otsuka ,  Renzaburo Miki ,  Hiroshige Hirajima ,  Noboru Fujita

发明人： Tetsuo Ueyama ,  Keiji Sakai ,  Yukio Kurata ,  Katsushige Masui ,  Naotaka Otsuka ,  Renzaburo Miki ,  Hiroshige Hirajima ,  Noboru Fujita

IPC分类号： G11B7/00 ,  G11B7/09 ,  G11B7/12 ,  G11B7/125 ,  G11B7/13 ,  G11B7/135 ,  G11B7/22

CPC分类号： G11B7/131 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0906 ,  G11B7/0908 ,  G11B7/0916 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/1381 ,  G11B7/22 ,  G11B2007/0006

摘要： An optical pickup can be provided, the optical pickup being capable of recording and playback of a plurality of optical disks having different specs by using light beams of different wavelengths, and further being suitable for integrating the semiconductor lasers and light receiving elements into a single package, by including: first and second semiconductor lasers adjacently disposed; a three-beam diffraction grating for generating three beams for tracking control; a second hologram element for diffracting light of the second semiconductor laser to guide it to a photosensor; a complex polarization beam splitter (PBS) for reflecting only light from the first semiconductor laser; and a first hologram element for diffracting light of the first semiconductor laser to guide it to the photosensor.

公开(公告)号：US5557116A

公开(公告)日：1996-09-17

申请号：US178399

申请日：1993-12-22

申请人： Katsushige Masui ,  Nobuyuki Miyauchi ,  Zenpei Tani ,  Hiroshi Chikugawa ,  Makoto Tsuji ,  Masaru Ogawa ,  Takehiro Shiomoto

发明人： Katsushige Masui ,  Nobuyuki Miyauchi ,  Zenpei Tani ,  Hiroshi Chikugawa ,  Makoto Tsuji ,  Masaru Ogawa ,  Takehiro Shiomoto

IPC分类号： H01S5/022 ,  H01L33/00 ,  H01S3/18

CPC分类号： H01S5/02244 ,  H01L24/97 ,  H01L2224/45144 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01S2301/176 ,  H01S5/02228 ,  H01S5/0683

摘要： A semiconductor laser device includes a base, a semiconductor laser chip and a resin layer enclosing the laser chip. The base may have a monitor photodiode mounted thereon in the vicinity of the laser chip. The resin layer enclosing the laser chip or both of the laser chip and the monitor diode chip is made of a single synthetic resin having a thickness not greater than 500 .mu.m and also having a surface substantially parallel to an outwardly oriented beam emitting end face of the laser chip.

摘要翻译： 半导体激光装置包括基底，半导体激光芯片和包围激光芯片的树脂层。 基座可以在激光芯片附近具有安装在其上的监视器光电二极管。 封装激光芯片或激光芯片和监视二极管芯片两者的树脂层由厚度不大于500μm的单一合成树脂制成，并且还具有基本上平行于向外定向的光束发射端面的表面 激光芯片。

公开(公告)号：US07483360B2

公开(公告)日：2009-01-27

申请号：US10954923

申请日：2004-09-29

申请人： Katsushige Masui ,  Kazuhiro Tsuchida ,  Kazunori Matsubara ,  Masahiro Ikehara ,  Keiji Sakai ,  Tetsuo Ueyama ,  Toshiya Nagahama

发明人： Katsushige Masui ,  Kazuhiro Tsuchida ,  Kazunori Matsubara ,  Masahiro Ikehara ,  Keiji Sakai ,  Tetsuo Ueyama ,  Toshiya Nagahama

IPC分类号： G11B7/00

CPC分类号： G11B7/131 ,  G11B7/0903 ,  G11B7/094 ,  G11B7/1353 ,  G11B2007/0013

摘要： To read information from a target information recording surface reliably by canceling DC offsets in tracking-signal detection signals is provided. In effecting tracking servo by 3-beam method, auxiliary light receiving domains D3—1, D3—2, D8—1, D8—2 are provided. The auxiliary light receiving domain receives images formed by the light returned from a different information recording surface from the one targeted for reading. Sub beams of ± first-order diffracted light enter the light receiving domains D3, D8, D1, D10. With respect to the diffraction direction of the hologram, the auxiliary light receiving domains D3—1, D3—2 (D8—1, D8—2) are provided on both sides of the light receiving domain D3 (D8). Since signals are computed as: D8−(D8—1+D8—2); and D3−(D3—1+D3—2) with the internal connection, DC offsets can be canceled in RES signals (D1+D3, D8+D10) used in the DPP method.

摘要翻译： 提供通过消除跟踪信号检测信号中的DC偏移来可靠地从目标信息记录表面读取信息。 通过三光束法实现跟踪伺服，提供辅助光接收域D3-1，D3-2，D8-1，D8-2。 辅助光接收区域接收由不同信息记录表面返回的光从与读取对象相对应的光形成的图像。 ±一级衍射光的子光进入光接收域D3，D8，D1，D10。 对于全息图的衍射方向，辅助光接收区域D3-1，D3-2（D8-1，D8-2）设置在光接收区域D3（D8）的两侧。 由于信号计算如下：D8-（D8-1 + D8-2）; 和D3-（D3-1 + D3-2）内部连接时，可以在DPP方式中使用的RES信号（D1 + D3，D8 + D10）中取消DC偏移。