公开(公告)号：US07330419B2

公开(公告)日：2008-02-12

申请号：US11443751

申请日：2006-05-31

申请人： Seiji Nishino ,  Hidenori Wada ,  Yoshiaki Komma ,  Sadao Mizuno ,  Keiichi Matsuzaki

发明人： Seiji Nishino ,  Hidenori Wada ,  Yoshiaki Komma ,  Sadao Mizuno ,  Keiichi Matsuzaki

IPC分类号： G11B7/00

CPC分类号： G11B7/1398 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1372 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/13925

摘要： An optical head device includes a focusing optical system for focusing a laser beam emitted from a semiconductor laser light source on an optical information medium with an objective lens. A chromatic aberration correction element for correcting chromatic aberration occurring in the objective lens is provided between the semiconductor laser light source and the optical information medium. A light distribution correction element in which the transmittance increases with the distance from the center of the aperture surface of the objective lens is provided so as to correct a reduction of the intensity of the light incident on the aperture surface of the objective lens with the distance from the center of the aperture surface.

摘要翻译： 光头装置包括聚焦光学系统，用于将从半导体激光光源发射的激光束聚焦在具有物镜的光信息介质上。 在半导体激光光源和光信息介质之间设置用于校正物镜中出现的色像差的色像差校正元件。 提供透光率随着距离物镜的孔径表面的中心的距离而增加的光分布校正元件，以便校正入射到物镜的孔表面上的光的强度的降低，距离 从孔表面的中心。

公开(公告)号：US07889622B2

公开(公告)日：2011-02-15

申请号：US11597996

申请日：2005-05-31

申请人： Hidenori Wada ,  Sadao Mizuno ,  Yoshiaki Komma ,  Keiichi Matsuzaki

发明人： Hidenori Wada ,  Sadao Mizuno ,  Yoshiaki Komma ,  Keiichi Matsuzaki

IPC分类号： G11B7/00

CPC分类号： G11B7/12 ,  G11B7/1356

摘要： An optical head for recording or reproducing a signal on or from an optical recording medium including a light source, an objective lens for condensing light emitted from the light source to the optical recording medium, and a light-separating device arranged between the light source and the objective lens in order to separate the light reflected from the optical recording medium from the light emitted from the light source. The light-separating device includes a first glass, a multilayer film formed on the first glass, and an adhesive layer arranged on the multilayer film in order to bond a second glass onto the multilayer film. The majority of the light emitted from the light source enters into the light-separating device through the first glass and is reflected by the multilayer film.

摘要翻译： 一种用于在包括光源的光记录介质上或从光记录介质上记录或再现信号的光学头，用于将从光源发射的光聚焦到光记录介质的物镜，以及布置在光源和 物镜，以将从光记录介质反射的光与从光源发射的光分离。 光分离装置包括第一玻璃，形成在第一玻璃上的多层膜和布置在多层膜上的粘合层，以将第二玻璃粘合到多层膜上。 从光源发射的大部分光通过第一玻璃进入分光装置，并被多层膜反射。

公开(公告)号：US20080013414A1

公开(公告)日：2008-01-17

申请号：US11597996

申请日：2005-05-31

申请人： Hidenori Wada ,  Sadao Mizuno ,  Yoshiaki Komma ,  Keiichi Matsuzaki

发明人： Hidenori Wada ,  Sadao Mizuno ,  Yoshiaki Komma ,  Keiichi Matsuzaki

IPC分类号： G11B7/00

CPC分类号： G11B7/12 ,  G11B7/1356

摘要： An optical head for recording or reproducing a signal on or from an optical recording medium comprising a light source, an objective lens for condensing light emitted from the light source to the optical recording medium, and a light-separating means arranged between the light source and the objective lens in order to separate the light reflected from the optical recording medium from the light emitted from the light source is characterized in that the light-separating means consists of a first glass, a multilayer film formed on the first glass, and an adhesive layer arranged on the multilayer film in order to bond a second glass onto the multilayer film, and the majority of the light emitted from the light source enters into the light-separating means through the first glass and is reflected by the multilayer film.

摘要翻译： 一种用于在包括光源的光记录介质上或从光记录介质上记录或再现信号的光学头，用于将从光源发射的光聚焦到光记录介质的物镜，以及布置在光源和 为了将从光记录介质反射的光与从光源发射的光分离，物镜的特征在于，分光装置由第一玻璃，形成在第一玻璃上的多层膜和粘合剂 层，以将第二玻璃粘合到多层膜上，并且从光源发射的大部分光通过第一玻璃进入分光装置，并被多层膜反射。

公开(公告)号：US20060233071A1

公开(公告)日：2006-10-19

申请号：US11443750

申请日：2006-05-31

申请人： Seiji Nishino ,  Hidenori Wada ,  Yoshiaki Komma ,  Sadao Mizuno ,  Keiichi Matsuzaki

发明人： Seiji Nishino ,  Hidenori Wada ,  Yoshiaki Komma ,  Sadao Mizuno ,  Keiichi Matsuzaki

IPC分类号： G11B7/00

CPC分类号： G11B7/1398 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1372 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/13925

摘要： An optical head device includes a focusing optical system for focusing a laser beam emitted from a semiconductor laser light source on an optical information medium with an objective lens. A chromatic aberration correction element for correcting chromatic aberration occurring in the objective lens is provided between the semiconductor laser light source and the optical information medium. A light distribution correction element in which the transmittance increases with the distance from the center of the aperture surface of the objective lens is provided so as to correct a reduction of the intensity of the light incident on the aperture surface of the objective lens with the distance from the center of the aperture surface.

公开(公告)号：US20060215505A1

公开(公告)日：2006-09-28

申请号：US11443751

申请日：2006-05-31

申请人： Seiji Nishino ,  Hidenori Wada ,  Yoshiaki Komma ,  Sadao Mizuno ,  Keiichi Matsuzaki

发明人： Seiji Nishino ,  Hidenori Wada ,  Yoshiaki Komma ,  Sadao Mizuno ,  Keiichi Matsuzaki

IPC分类号： G11B7/00

CPC分类号： G11B7/1398 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1372 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/13925

摘要： An optical head device includes a focusing optical system for focusing a laser beam emitted from a semiconductor laser light source on an optical information medium with an objective lens. A chromatic aberration correction element for correcting chromatic aberration occurring in the objective lens is provided between the semiconductor laser light source and the optical information medium. A light distribution correction element in which the transmittance increases with the distance from the center of the aperture surface of the objective lens is provided so as to correct a reduction of the intensity of the light incident on the aperture surface of the objective lens with the distance from the center of the aperture surface.

公开(公告)号：US08184522B2

公开(公告)日：2012-05-22

申请号：US12983427

申请日：2011-01-03

申请人： Hidenori Wada ,  Sadao Mizuno ,  Yoshiaki Komma ,  Keiichi Matsuzaki

发明人： Hidenori Wada ,  Sadao Mizuno ,  Yoshiaki Komma ,  Keiichi Matsuzaki

IPC分类号： G11B7/00

CPC分类号： G11B7/12 ,  G11B7/1356

摘要： An optical head for recording or reproducing a signal on or from an optical recording medium including a light source, an objective lens for condensing light emitted from the light source to the optical recording medium, and a light-separating device arranged between the light source and the objective lens in order to separate the light reflected from the optical recording medium from the light emitted from the light source. The light-separating device includes a first glass, a multilayer film formed on the first glass, and an adhesive layer arranged on the multilayer film in order to bond a second glass onto the multilayer film. The majority of the light emitted from the light source enters into the light-separating device through the first glass and is reflected by the multilayer film.

摘要翻译： 一种用于在包括光源的光记录介质上或从光记录介质上记录或再现信号的光学头，用于将从光源发射的光聚焦到光记录介质的物镜，以及布置在光源和 物镜，以将从光记录介质反射的光与从光源发射的光分离。 光分离装置包括第一玻璃，形成在第一玻璃上的多层膜和布置在多层膜上的粘合层，以将第二玻璃粘合到多层膜上。 从光源发射的大部分光通过第一玻璃进入分光装置，并被多层膜反射。

公开(公告)号：US07480227B2

公开(公告)日：2009-01-20

申请号：US11443750

申请日：2006-05-31

申请人： Seiji Nishino ,  Hidenori Wada ,  Yoshiaki Komma ,  Sadao Mizuno ,  Keiichi Matsuzaki

发明人： Seiji Nishino ,  Hidenori Wada ,  Yoshiaki Komma ,  Sadao Mizuno ,  Keiichi Matsuzaki

IPC分类号： G11B7/00

CPC分类号： G11B7/1398 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1372 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/13925

摘要： An optical head device includes a focusing optical system for focusing a laser beam emitted from a semiconductor laser light source on an optical information medium with an objective lens. A chromatic aberration correction element for correcting chromatic aberration occurring in the objective lens is provided between the semiconductor laser light source and the optical information medium. A light distribution correction element in which the transmittance increases with the distance from the center of the aperture surface of the objective lens is provided so as to correct a reduction of the intensity of the light incident on the aperture surface of the objective lens with the distance from the center of the aperture surface.

摘要翻译： 光头装置包括聚焦光学系统，用于将从半导体激光光源发射的激光束聚焦在具有物镜的光信息介质上。 在半导体激光光源和光信息介质之间设置用于校正物镜中出现的色像差的色像差校正元件。 提供透光率随着距离物镜的孔径表面的中心的距离而增加的光分布校正元件，以便校正入射到物镜的孔表面上的光的强度的降低，距离 从孔表面的中心。

公开(公告)号：US07110342B2

公开(公告)日：2006-09-19

申请号：US10264297

申请日：2002-10-02

申请人： Seiji Nishino ,  Hidenori Wada ,  Yoshiaki Komma ,  Sadao Mizuno ,  Keiichi Matsuzaki

发明人： Seiji Nishino ,  Hidenori Wada ,  Yoshiaki Komma ,  Sadao Mizuno ,  Keiichi Matsuzaki

IPC分类号： G11B7/00

CPC分类号： G11B7/1398 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1372 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/13925

摘要： An optical head device includes a focusing optical system for focusing a laser beam emitted from a semiconductor laser light source on an optical information medium with an objective lens. A chromatic aberration correction element for correcting chromatic aberration occurring in the objective lens is provided between the semiconductor laser light source and the optical information medium. A light distribution correction element in which the transmittance increases with the distance from the center of the aperture surface of the objective lens is provided so as to correct a reduction of the intensity of the light incident on the aperture surface of the objective lens with the distance from the center of the aperture surface.

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。

公开(公告)号：US5644413A

公开(公告)日：1997-07-01

申请号：US501351

申请日：1995-07-12

申请人： Yoshiaki Komma ,  Sadao Mizuno ,  Makoto Kato ,  Hidenori Wada ,  Seiji Nishino

发明人： Yoshiaki Komma ,  Sadao Mizuno ,  Makoto Kato ,  Hidenori Wada ,  Seiji Nishino

IPC分类号： G02B5/18 ,  G02B5/32 ,  G11B7/09 ,  G11B7/125 ,  G11B7/135

CPC分类号： G11B7/1353 ,  G02B5/1876 ,  G02B5/32 ,  G11B7/126 ,  G11B7/127 ,  G11B7/1359 ,  G11B7/1376 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/0912 ,  Y10S359/90

摘要： An optical head apparatus consists of a semiconductor laser for radiating a light beam, a first collimator lens for collimating the light beam, a wedge-like prism for reshaping the light beam, a beam splitter for transmitting the light beam in an outgoing path and splitting the light beam in an incoming path, an objective lens for converging the light beam at an information medium in which information is stored, a plane type of hologram lens integrally formed with the objective lens for excessively correcting chromatic aberration of the objective lens to cancel out chromatic aberration of the collimator lens, a second collimator lens for converging the light beam split, a photo detector for detecting intensity of the light beam converged to obtain an information signal and servo signals, and an actuating unit for slightly moving the objective lens and the hologram lens according to the servo signals. A wavelength of the light beam is lengthened as intensity of the light beam is increased. Even though an astigmatic difference occurs in the semiconductor laser, the change of a focal length of the collimator lens cancels out the change of the astigmatic difference to prevent the occurrence of astigmatic aberration.

摘要翻译： 光头装置由用于照射光束的半导体激光器，用于准直光束的第一准直透镜，用于整形光束的楔形棱镜，用于在输出路径中传输光束的分束器和分离器 入射路径中的光束，用于在存储信息的信息介质处会聚光束的物镜，与物镜整体形成的平面型全息透镜，用​​于过度校正物镜的色差以抵消 准直透镜的色差，用于会聚光束的第二准直透镜，用于检测会聚的光束的强度的光检测器，以获得信息信号和伺服信号，以及用于使物镜稍微移动的致动单元 全息透​​镜根据伺服信号。 当光束的强度增加时，光束的波长被延长。 即使在半导体激光器中出现散像差异，准直透镜的焦距的变化抵消像散差的变化，从而防止散光像差的发生。