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1. 发明申请

US20070064574A1 Semiconductor laser apparatus, optical pick-up and optical information apparatus 审中-公开
标题翻译：半导体激光装置，光学拾取和光学信息装置
公开(公告)号：US20070064574A1
公开(公告)日：2007-03-22
申请号：US11521664
申请日：2006-09-15
申请人： Yoshiaki Komma , Seiji Nishino , Hidenori Wada , Teruhiro Shiono , Sadao Mizuno , Hiroshi Shiroiwa
发明人： Yoshiaki Komma , Seiji Nishino , Hidenori Wada , Teruhiro Shiono , Sadao Mizuno , Hiroshi Shiroiwa
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B7/123 , G11B7/1275 , G11B2007/0006
摘要： A transmission diffraction grating body including a base material being substantially transparent with respect to wavelength λ1 and having a refractive index n0; another base material being substantially transparent with respect to wavelength λ1 and having a refractive index n1, which is formed on the base material having a refractive index n0; and a relief diffraction grating formed on the base material having a refractive index n1; wherein the refractive indexes n1 and n0 satisfy the relationship: n1>n0. Thus, the base material having a refractive index n1 can be formed of a high refractive index material, and when the depth of grating of the diffraction grating is set so that the diffraction grating diffracts the light with wavelength λ1 and does not diffract the light with wavelength λ2, the depth of grating of the diffraction grating can be made to be shallow, thus preventing the loss of the amount of the light with wavelength λ1. Furthermore, since base materials each having a different refractive index are bonded to each other to form a diffraction grating body, it is possible to minimize the use amount of the relatively expensive material having a high refractive index. Furthermore, since the most of the diffraction grating body can be formed of a material having a low refractive index, it is possible to lower the height of the diffraction index body.
摘要翻译：透射衍射光栅体，其包括相对于波长λ1基本上透明且具有折射率n 0的基材; 另一种基材相对于波长λ1基本上是透明的，并且具有折射率n 1，其形成在折射率为n 0的基材上; 以及形成在折射率为n 1的基材上的浮雕衍射光栅; 其中折射率n 1和n 0满足关系：n 1> n 0。因此，具有折射率n 1的基材可以由高折射率材料形成，并且当衍射光栅的光栅的深度被设置为使得衍射光栅衍射具有波长λ1的光并且不衍射具有波长λ2的光，衍射光栅的光栅深度可以变浅，从而防止波长λ1的光量的损失。此外，由于各自具有不同折射率的基材彼此结合以形成衍射光栅体，所以可以使具有高折射率的相对昂贵的材料的使用量最小化。此外，由于衍射光栅体的大部分可以由具有低折射率的材料形成，因此可以降低衍射指数体的高度。

2. 发明授权

US07656777B2 Optical recording medium, optical information processor, and optical recording/reproducing method 有权
标题翻译：光记录介质，光信息处理器和光记录/再现方法
公开(公告)号：US07656777B2
公开(公告)日：2010-02-02
申请号：US10516220
申请日：2003-05-26
申请人： Hiroaki Yamamoto , Teruhiro Shiono , Tatsuo Ito , Seiji Nishino , Sadao Mizuno
发明人： Hiroaki Yamamoto , Teruhiro Shiono , Tatsuo Ito , Seiji Nishino , Sadao Mizuno
IPC分类号： G11B7/24
CPC分类号： G11B7/243 , G11B7/00455 , G11B7/24038 , G11B7/257
摘要： An optical recording medium which is a multilayer optical recording medium including a plurality of recording layers and records or reproduces information by the irradiation of light having a wavelength of λ0. At least one recording layer out of a plurality of recording layers includes a variable absorption film. The variable absorption film contains a material in which an electron energy has a band structure, and the absorption end of an absorption spectrum moves toward a longer wavelength side with a rise in temperature when light is absorbed by transition between electron bands, has a first absorptance to light having a wavelength of λ0 when a film temperature is a first temperature (application environment temperature), and has a second absorptance higher than the first absorptance to light having a wavelength of λ0 when a film temperature is a second temperature higher than the first temperature.
摘要翻译：一种光记录介质，其是包括多个记录层的多层光记录介质，并且通过照射波长为λ0的光记录或再现信息。多个记录层中的至少一个记录层包括可变吸收膜。可变吸收膜含有电子能量具有带状结构的材料，并且当光被电子带之间的过渡吸收时，吸收光谱的吸收端随着温度升高而向较长波长侧移动，具有第一吸收率当膜温度为第一温度（施加环境温度）时具有λ0的波长的光，并且当膜温度比第一温度高的第一温度时，具有比第一吸光度高于具有波长λ0的光的第二吸收率温度。

3. 发明授权

US06987615B2 Diffractive optical element and optical head using the same 有权
$Diffractive optical element and optical head using the same$
标题翻译：衍射光学元件和使用其的光学头
公开(公告)号：US06987615B2
公开(公告)日：2006-01-17
申请号：US10264467
申请日：2002-10-04
申请人： Teruhiro Shiono , Hidenori Wada , Seiji Nishino
发明人： Teruhiro Shiono , Hidenori Wada , Seiji Nishino
IPC分类号： G02B5/18
CPC分类号： G11B7/1275 , G02B5/1871 , G11B2007/0006
摘要： A diffractive optical element emits substantially zero order diffracted light when light with a wavelength of 0.35 μm to 0.45 μm is incident and emits substantially first-order diffracted light when light with a wavelength of 0.6 μm to 0.7 μm is incident. The diffractive optical element includes a substrate and a grating portion formed on the substrate. The grating portion has a step-wise cross section with any one of levels selected from four levels, five levels and six levels. The diffractive optical element emits substantially zero-order diffracted light when light with a first wavelength λ1 satisfying the relationship: 0.35 μm≦λ1≦0.45 μm is incident and emits substantially first-order diffracted light when light with a second wavelength λ2 satisfying the relationship: 0.6 μm≦λ2≦0.7 μm is incident.
摘要翻译：当波长为0.35μm至0.45μm的光入射时，衍射光学元件发射基本为零级的衍射光，并且当入射具有0.6μm至0.7μm波长的光时，发射基本上为一级的衍射光。衍射光学元件包括基板和形成在基板上的光栅部分。光栅部分具有从四个级别，五个级别和六个级别中选择的任何一个级别的逐步横截面。当具有第一波长λ1的满足0.35μm<λλ=0.45μm的关系的光入射时，衍射光学元件发射基本上为零级的衍射光，并且当具有第二波长λ的光时发射基本上一级的衍射光 2满足关系：0.6mum <=λ2 <=0.7μm是入射的。

4. 发明申请

US20060233072A1 Optical head 有权
标题翻译：光头
公开(公告)号：US20060233072A1
公开(公告)日：2006-10-19
申请号：US11451779
申请日：2006-06-13
申请人： Teruhiro Shiono , Keiichi Matsuzaki , Hidenori Wada , Seiji Nishino
发明人： Teruhiro Shiono , Keiichi Matsuzaki , Hidenori Wada , Seiji Nishino
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G11B7/1353 , G11B7/1367 , G11B7/1369 , G11B7/13922
摘要： An optical head with excellent optical characteristics even when using a light source that substantially has a wavelength broadening is provided. The optical head includes a light source, an objective lens for focusing a light beam emitted from the light source on an information recording medium and a photodetector for detecting the light beam reflected from the information recording medium, wherein defocusing correction means and spherical aberration correction means are provided in an optical path between the light source and the information recording medium. Since both the defocusing correction means and the spherical aberration correction means are provided, while defocusing of a focused spot on the information recording medium caused by a wavelength broadening of the light source and chromatic aberration of the optical system can be corrected, the spherical aberration of the optical system caused by wavelength difference between a design wavelength and an incident wavelength also can be corrected. As a result, excellent optical characteristics can be obtained.
摘要翻译：提供即使在使用基本上具有波长变宽的光源的情况下也具有优异的光学特性的光学头。光头包括光源，用于将从光源发射的光束聚焦在信息记录介质上的物镜和用于检测从信息记录介质反射的光束的光电检测器，其中散焦校正装置和球面像差校正装置设置在光源和信息记录介质之间的光路中。由于设置了散焦校正装置和球面像差校正装置两者，所以可以校正由光源的波长变宽和光学系统的色差引起的信息记录介质上的聚焦点的散焦，也可以校正由设计波长和入射波长之间的波长差引起的光学系统。结果，可以获得优异的光学特性。

5. 发明授权

US07085203B2 Optical head with defocusing correction and spherical aberration correction 有权
标题翻译：具有散焦校正和球面像差校正的光学头
公开(公告)号：US07085203B2
公开(公告)日：2006-08-01
申请号：US09794434
申请日：2001-02-27
申请人： Teruhiro Shiono , Keiichi Matsuzaki , Hidenori Wada , Seiji Nishino
发明人： Teruhiro Shiono , Keiichi Matsuzaki , Hidenori Wada , Seiji Nishino
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G11B7/1353 , G11B7/1367 , G11B7/1369 , G11B7/13922
摘要： An optical head with excellent optical characteristics even when using a light source that substantially has a wavelength broadening is provided. The optical head includes a light source, an objective lens for focusing a light beam emitted from the light source on an information recording medium and a photodetector for detecting the light beam reflected from the information recording medium, wherein defocusing correction means and spherical aberration correction means are provided in an optical path between the light source and the information recording medium. Since both the defocusing correction means and the spherical aberration correction means are provided, while defocusing of a focused spot on the information recording medium caused by a wavelength broadening of the light source and chromatic aberration of the optical system can be corrected, the spherical aberration of the optical system caused by wavelength difference between a design wavelength and an incident wavelength also can be corrected. As a result, excellent optical characteristics can be obtained.
摘要翻译：提供即使在使用基本上具有波长变宽的光源的情况下也具有优异的光学特性的光学头。光头包括光源，用于将从光源发射的光束聚焦在信息记录介质上的物镜和用于检测从信息记录介质反射的光束的光电检测器，其中散焦校正装置和球面像差校正装置设置在光源和信息记录介质之间的光路中。由于提供了散焦校正装置和球面像差校正装置两者，所以可以校正由光源的波长变宽和光学系统的色差引起的信息记录介质上的聚焦点的散焦，也可以校正由设计波长和入射波长之间的波长差引起的光学系统。结果，可以获得优异的光学特性。

6. 发明授权

US07268947B2 Diffractive optical element and optical head using the same 有权
$Diffractive optical element and optical head using the same$
标题翻译：衍射光学元件和使用其的光学头
公开(公告)号：US07268947B2
公开(公告)日：2007-09-11
申请号：US11049232
申请日：2005-02-01
申请人： Teruhiro Shiono , Hidenori Wada , Seiji Nishino
发明人： Teruhiro Shiono , Hidenori Wada , Seiji Nishino
IPC分类号： G02B5/18 , G11B7/00
CPC分类号： G11B7/1275 , G02B5/1871 , G11B2007/0006
摘要： A diffractive optical element emits substantially zero order diffracted light when light with a wavelength of 0.35 μm to 0.45 μm is incident and emits substantially first-order diffracted light when light with a wavelength of 0.6 μm to 0.7 μm is incident. The diffractive optical element includes a substrate and a grating portion formed on the substrate. The grating portion has a step-wise cross section with any one of levels selected from four levels, five levels and six levels. The diffractive optical element emits substantially zero-order diffracted light when light with a first wavelength λ1 satisfying the relationship: 0.35 μm≦λ1≦0.45 μm is incident and emits substantially first-order diffracted light when light with a second wavelength λ2 satisfying the relationship: 0.6 μm≦λ2≦0.7 μm is incident.
摘要翻译：当波长为0.35μm至0.45μm的光入射时，衍射光学元件发射基本为零级的衍射光，并且当入射具有0.6μm至0.7μm波长的光时，发射基本上为一级的衍射光。衍射光学元件包括基板和形成在基板上的光栅部分。光栅部分具有从四个级别，五个级别和六个级别中选择的任何一个级别的逐步横截面。当具有满足以下关系的第一波长λ1的光时，衍射光学元件发射基本为零级的衍射光，即当第二波长λ2的光满足以下条件时，基本上为一级衍射光关系：0.6 mum <= lambda2 <= 0.7 mum是事件。

7. 发明授权

US07394733B2 Optical head with spherical aberration correction and method of using same 有权
标题翻译：具有球面像差校正的光学头及其使用方法
公开(公告)号：US07394733B2
公开(公告)日：2008-07-01
申请号：US11451779
申请日：2006-06-13
申请人： Teruhiro Shiono , Keiichi Matsuzaki , Hidenori Wada , Seiji Nishino
发明人： Teruhiro Shiono , Keiichi Matsuzaki , Hidenori Wada , Seiji Nishino
IPC分类号： G11B7/00
CPC分类号： G11B7/13925 , G11B7/1353 , G11B7/1367 , G11B7/1369 , G11B7/13922
摘要： An optical head with excellent optical characteristics even when using a light source that substantially has a wavelength broadening is provided. The optical head includes a light source, an objective lens for focusing a light beam emitted from the light source on an information recording medium and a photodetector for detecting the light beam reflected from the information recording medium, wherein defocusing correction means and spherical aberration correction means are provided in an optical path between the light source and the information recording medium. Since both the defocusing correction means and the spherical aberration correction means are provided, while defocusing of a focused spot on the information recording medium caused by a wavelength broadening of the light source and chromatic aberration of the optical system can be corrected, the spherical aberration of the optical system caused by wavelength difference between a design wavelength and an incident wavelength also can be corrected. As a result, excellent optical characteristics can be obtained.
摘要翻译：提供即使在使用基本上具有波长变宽的光源的情况下也具有优异的光学特性的光学头。光头包括光源，用于将从光源发射的光束聚焦在信息记录介质上的物镜和用于检测从信息记录介质反射的光束的光电检测器，其中散焦校正装置和球面像差校正装置设置在光源和信息记录介质之间的光路中。由于提供了散焦校正装置和球面像差校正装置两者，所以可以校正由光源的波长变宽和光学系统的色差引起的信息记录介质上的聚焦点的散焦，也可以校正由设计波长和入射波长之间的波长差引起的光学系统。结果，可以获得优异的光学特性。

8. 发明申请

US20050152036A1 Diffractive optical element and optical head using the same 有权
$Diffractive optical element and optical head using the same$
标题翻译：衍射光学元件和使用其的光学头
公开(公告)号：US20050152036A1
公开(公告)日：2005-07-14
申请号：US11049232
申请日：2005-02-01
申请人： Teruhiro Shiono , Hidenori Wada , Seiji Nishino
发明人： Teruhiro Shiono , Hidenori Wada , Seiji Nishino
IPC分类号： G02B5/18 , G11B7/00 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1275 , G02B5/1871 , G11B2007/0006
摘要： A diffractive optical element emits substantially zero order diffracted light when light with a wavelength of 0.35 μm to 0.45 μm is incident and emits substantially first-order diffracted light when light with a wavelength of 0.6 μm to 0.7 μm is incident. The diffractive optical element includes a substrate and a grating portion formed on the substrate. The grating portion has a step-wise cross section with any one of levels selected from four levels, five levels and six levels. The diffractive optical element emits substantially zero-order diffracted light when light with a first wavelength λ1 satisfying the relationship: 0.35 μm≦λ1≦0.45 μm is incident and emits substantially first-order diffracted light when light with a second wavelength λ2 satisfying the relationship: 0.6 μm≦λ2≦0.7 μm is incident.
摘要翻译：当波长为0.35μm至0.45μm的光入射时，衍射光学元件发射基本为零级的衍射光，并且当入射具有0.6μm至0.7μm波长的光时，发射基本上为一级的衍射光。衍射光学元件包括基板和形成在基板上的光栅部分。光栅部分具有从四个级别，五个级别和六个级别中选择的任何一个级别的逐步横截面。当具有满足以下关系的第一波长λ1的光时，衍射光学元件发射基本为零级的衍射光，即当第二波长λ2的光满足以下条件时，基本上为一级衍射光关系：0.6 mum <= lambda2 <= 0.7 mum是事件。

9. 发明授权

US06584059B1 Information recording and reproducing apparatus 失效
标题翻译：信息记录和再现装置
公开(公告)号：US06584059B1
公开(公告)日：2003-06-24
申请号：US09501380
申请日：2000-02-09
申请人： Tetsuo Saimi , Seiji Nishino , Hidenori Wada , Teruhiro Shiono , Keiichi Matsuzaki
发明人： Tetsuo Saimi , Seiji Nishino , Hidenori Wada , Teruhiro Shiono , Keiichi Matsuzaki
IPC分类号： G11B700
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/131 , G11B7/1369 , G11B7/14 , G11B2007/0006
摘要： An information recording and reproducing apparatus in accordance with the present invention has a radiation light source, a collimator turning a light beam emitted from the radiation light source into substantially parallel light, a light beam convergence member focusing the light beam on an information carrier, a light beam polarization-branching member branching the light beam by polarization, a variable wave plate located between the collimator and the light beam convergence member, photo detectors receiving the light beam branched by the light beam polarization-branching member and outputting a current according to an incident light quantity, and an output level judging member judging whether an output of the photo detectors is larger or smaller than a predetermined value. When the photo detectors receive a small light quantity because the information carrier is highly birefringent, the variable wave plate is switched from a ¼ wavelength plate to a zero-wave plate, thus constantly obtaining a stable reproducing signal with an excellent S/N.
摘要翻译：根据本发明的信息记录和再现装置具有辐射光源，将从辐射光源发射的光束转换成基本平行的光的准直仪，将光束聚焦在信息载体上的光束会聚部件，光束偏振分支部件通过偏振分支光束，位于准直器和光束会聚部件之间的可变波片，接收由光束偏振分支部件分支的光束的光检测器，并根据以及判断光电检测器的输出是否大于或小于预定值的输出电平判断部件。由于信息载体高度双折射，当光电检测器接收到小的光量时，可变波片从1/4波片切换到零波片，从而不断获得具有优异S / N的稳定再现信号。

10. 发明授权

US07764589B2 Confocal optical system aperture detector that measures a light quantity balance of light received to detect a position displacement, and a confocal optical system aperture position controller, an optical head and a position detecting method performing the same 失效
标题翻译：共焦光学系统孔径检测器，其测量接收到的光的光量平衡以检测位置位移，以及共焦光学系统孔径位置控制器，光学头和执行其的位置检测方法
公开(公告)号：US07764589B2
公开(公告)日：2010-07-27
申请号：US10595995
申请日：2005-04-20
申请人： Tatsuo Itoh , Teruhiro Shiono , Seiji Nishino
发明人： Tatsuo Itoh , Teruhiro Shiono , Seiji Nishino
IPC分类号： G11B7/00
CPC分类号： G11B7/1381 , G02B21/0032 , G02B21/006 , G02B21/008 , G11B2007/0013
摘要： In a confocal optical system having a light source 13, a first focusing means 14, a second focusing means 16, an aperture 17, and a detector 18 including a plurality of light reception regions, a position displacement is detected by detecting an intensity distribution of an image caused by a position displacement between a focusing spot of the second focusing means 16 and the aperture 17, by the detector 18. Further, the position displacement is corrected by controlling the aperture position using driving means 19 and control means 20. Also, a position displacement of the aperture 17 in the optical axis direction is detected and corrected on the basis of a change in an output of the detector 18 by oscillating the aperture 17 in the optical axis direction.
摘要翻译：在具有光源13，第一聚焦装置14，第二聚焦装置16，孔17和包括多个光接收区域的检测器18的共焦光学系统中，通过检测位置偏移来检测位置偏移由检测器18由第二聚焦装置16的聚焦光点与光圈17之间的位置偏移引起的图像。此外，通过使用驱动装置19和控制装置20控制光圈位置来校正位置偏移。另外，基于孔17在光轴方向的振荡，基于检测器18的输出的变化来检测和校正孔17的光轴方向的位置位移。

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