公开(公告)号：US07667899B2

公开(公告)日：2010-02-23

申请号：US12413106

申请日：2009-03-27

申请人： Tetsuya Ori

发明人： Tetsuya Ori

IPC分类号： G02B15/14

CPC分类号： G02B15/173

摘要： A positive first lens group G1, a negative second lens group G2, an aperture diaphragm St, a positive third lens group G3, and a positive fourth lens group G4 are sequentially arranged, and a movement of the lens groups and the aperture diaphragm St during zooming is optimized in combination with an appropriate conditional expression. During zooming, a position of the aperture diaphragm St on an optical axis at a wide-angle end is closer to an image plane than that at a telephoto end, and a space on the optical axis at the wide-angle end between the aperture diaphragm St and the third lens group G3 is larger than that at the telephoto end, thereby suppressing the length of the whole lens. Also, heights of rays passing through the first lens group G1 are lowered, thereby suppressing the lens diameter of the first lens group G1.

摘要翻译： 依次布置正的第一透镜组G1，负的第二透镜组G2，孔径光阑St，正的第三透镜组G3和正的第四透镜组G4，并且透镜组和孔径光阑St的移动 与适当的条件表达式组合优化缩放。 在变焦期间，孔径光阑St在广角端的光轴上的位置比望远端更靠近像面，并且在光阑的广角端处的光轴上的空间 St和第三透镜组G3大于望远端的距离，从而抑制整个透镜的长度。 此外，通过第一透镜组G1的光线的高度降低，从而抑制第一透镜组G1的透镜直径。

公开(公告)号：US20090296227A1

公开(公告)日：2009-12-03

申请号：US12471182

申请日：2009-05-22

申请人： Toshiaki Katsuma ,  Masao Mari ,  Yu Kitahara ,  Tetsuya Ori

发明人： Toshiaki Katsuma ,  Masao Mari ,  Yu Kitahara ,  Tetsuya Ori

IPC分类号： G02B3/00 ,  B29D11/00

CPC分类号： G02B13/0025 ,  G02B3/04 ,  G11B7/1353 ,  G11B7/1374

摘要： A laser beam output from a semiconductor laser light source 1 is transmitted through a cover glass 2 in the optical axis Z direction, is incident on a molded lens 4 in a state of divergent rays, is converted into convergent rays by the molded lens 4, and is applied onto a recording face 5 of the optical recording medium. A diaphragm 3 is arranged. An area of each lens surface onto which a luminous flux of the laser beam restricted by the diaphragm 3 is applied corresponds to an effective area. The following expression (1) is satisfied: d1−d0≧0.04 mm  (1) where d0 denotes an effective aperture of one of the lens surfaces, and d1 denotes an outer diameter of the one of the lens surfaces.

摘要翻译： 从半导体激光光源1输出的激光束沿着光轴Z方向透过盖玻璃2，以发散光线入射到模制透镜4上，通过模制透镜4转换成会聚光线， 并且被施加到光学记录介质的记录面5上。 设置有隔膜3。 每个透镜表面上施加受光阑3限制的激光束的光通量的区域对应于有效面积。 满足以下表达式（1）：d1-d0> = 0.04mm（1）其中d0表示透镜表面之一的有效孔径，d1表示透镜表面之一的外径。

公开(公告)号：US07589914B2

公开(公告)日：2009-09-15

申请号：US11826928

申请日：2007-07-19

申请人： Toshiaki Katsuma ,  Masao Mori ,  Yu Kitahara ,  Tetsuya Ori

发明人： Toshiaki Katsuma ,  Masao Mori ,  Yu Kitahara ,  Tetsuya Ori

IPC分类号： G02B13/18

CPC分类号： G02B13/0025 ,  G02B3/04 ,  G11B7/1353 ,  G11B7/1374

摘要： A laser beam output from a semiconductor laser light source 1 is transmitted through a cover glass 2 in the optical axis Z direction, is incident on a molded lens 4 in a state of divergent rays, is converted into convergent rays by the molded lens 4, and is applied onto a recording face 5 of the optical recording medium. A diaphragm 3 is arranged. An area of each lens surface onto which a luminous flux of the laser beam restricted by the diaphragm 3 is applied corresponds to an effective area. The following expression (1) is satisfied: d1−d0≧0.04 mm  (1) where d0 denotes an effective aperture of one of the lens surfaces, and d1 denotes an outer diameter of the one of the lens surfaces.

摘要翻译： 从半导体激光光源1输出的激光束沿着光轴Z方向透过盖玻璃2，以发散光线入射到模制透镜4上，通过模制透镜4转换成会聚光线， 并且被施加到光学记录介质的记录面5上。 设置有隔膜3。 每个透镜表面上施加受光阑3限制的激光束的光通量的区域对应于有效面积。 满足以下表达式（1）：<？in-line-formula description =“In-line formula”end =“lead”？> d1-d0> = 0.04 mm（1）<？in-line-formula description = “直线公式”end =“tail”？>其中d0表示一个透镜表面的有效孔径，d1表示透镜表面之一的外径。

公开(公告)号：US20090129241A1

公开(公告)日：2009-05-21

申请号：US12273139

申请日：2008-11-18

申请人： Toshiaki KATSUMA ,  Masao MORI ,  Tetsuya ORI ,  Yu KITAHARA

发明人： Toshiaki KATSUMA ,  Masao MORI ,  Tetsuya ORI ,  Yu KITAHARA

IPC分类号： G11B7/00

CPC分类号： G02B27/0031 ,  G11B7/1374

摘要： An objective lens consists of a single lens element, and has a light source side surface formed into a convex surface having a large curvature and an optical recording medium side surface has a small curvature. The both surfaces are aspheric surfaces. Also, the objective lens satisfies the following expressions (1) to (3): 0.7

摘要翻译： 物镜由单个透镜元件组成，具有形成为具有大曲率的凸面的光源侧面，光记录介质侧面的曲率小。 两个表面都是非球面。 此外，物镜满足以下表达式（1）〜（3）：<？in-line-formula description =“In-line formula”end =“lead”？> 0.7 <？in-line-formula description =“In-line formula”end =“lead”？> 0.70 <？in-line-formula description =“In-line Formulas”end =“lead”？> 0.48 其中NA表示物镜在光记录介质侧的数值孔径，d表示物镜的厚度 透镜在光轴上以mm表示，f表示物镜的焦距，单位为mm。 X等于（X1-X2）（n-1）/（NA.f），其中X1和X2表示与各个表面中的下垂量有关的值，n表示折射率。

公开(公告)号：US07457223B2

公开(公告)日：2008-11-25

申请号：US10922958

申请日：2004-08-23

申请人： Toshiaki Katsuma ,  Yu Kitahara ,  Tetsuya Ori ,  Masao Mori

发明人： Toshiaki Katsuma ,  Yu Kitahara ,  Tetsuya Ori ,  Masao Mori

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

摘要： An objective lens consists of two lens elements of different materials that are cemented. The lens surfaces that are cemented includes a phase function so that the cemented surface forms a optical diffractive surface that enables the objective lens to focus incident light of three different wavelengths with different numerical apertures onto different optical recording media. Three conditions are satisfied so as to achieve optimum imaging. The optical diffractive surface is shaped so that the order of the diffracted light of the shortest wavelength λ1 having the largest diffracted intensity is zero and different from the order of the diffracted light of the second wavelength λ2 having the largest diffracted intensity, and the order of the diffracted light of the first wavelength λ1 having the largest diffracted intensity is also different from the order of the diffracted light of the third wavelength λ3 having the largest diffracted intensity.

摘要翻译： 物镜由两种胶合的不同材料的透镜元件组成。 胶合的透镜表面包括相位功能，使得胶合表面形成光学衍射表面，使得物镜能够使具有不同数值孔径的三种不同波长的入射光聚焦到不同的光学记录介质上。 满足三个条件以实现最佳成像。 光衍射面成形为具有最大衍射强度的最短波长λ1的衍射光的次数为零，并且与衍射强度最大的第二波长λ2的衍射光的次序不同， 具有最大衍射强度的第一波长λ1的衍射光也与具有最大衍射强度的第三波长λ3的衍射光的次数不同。

公开(公告)号：US07443779B2

公开(公告)日：2008-10-28

申请号：US11019203

申请日：2004-12-23

申请人： Yu Kitahara ,  Tetsuya Ori ,  Toshiaki Katsuma ,  Masao Mori ,  Hiromitsu Yamakawa

发明人： Yu Kitahara ,  Tetsuya Ori ,  Toshiaki Katsuma ,  Masao Mori ,  Hiromitsu Yamakawa

IPC分类号： G11B7/00

CPC分类号： G11B7/1367 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

摘要： An objective optical system includes a diffractive optical element on the light source side of an objective lens for focusing incident light of three different wavelengths with two different numerical apertures onto three different optical recording media. The diffractive optical element is formed of two lens elements made of different materials that are cemented together at a diffractive surface. Three conditions are satisfied so as to achieve optimum imaging. The diffractive surface may be shaped so that the order of the diffracted light of the shortest wavelength λ2 having the largest diffracted intensity is different from the order of the diffracted light of the second wavelength λ2 having the largest diffracted intensity, and the order of the diffracted light of the first wavelength λ1 having the largest diffracted intensity is also different from the order of the diffracted light of the third wavelength λ3 having the largest diffracted intensity.

摘要翻译： 物镜光学系统包括在物镜的光源侧的衍射光学元件，用于将具有两个不同数值孔径的三种不同波长的入射光聚焦到三种不同的光记录介质上。 衍射光学元件由在衍射表面上胶合在一起的不同材料制成的两个透镜元件形成。 满足三个条件以实现最佳成像。 衍射表面可以被成形为使得具有最大衍射强度的最短波长λ1的衍射光的次序与具有最大衍射强度的第二波长λ2的衍射光的次序不同， 具有最大衍射强度的第一波长λ1的衍射光也与具有最大衍射强度的第三波长λ3的衍射光的顺序不同。

公开(公告)号：US07286463B2

公开(公告)日：2007-10-23

申请号：US10988638

申请日：2004-11-16

申请人： Yu Kitahara ,  Toshiaki Katsuma ,  Masao Mori ,  Tetsuya Ori

发明人： Yu Kitahara ,  Toshiaki Katsuma ,  Masao Mori ,  Tetsuya Ori

IPC分类号： G11B7/00

CPC分类号： G11B7/1392 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B2007/0006

摘要： An objective lens is formed as an objective lens element with a diffractive surface on one side. The objective lens focuses a collimated light beam of a first wavelength diffracted by the objective lens onto a first recording medium, a collimated light beam of a second wavelength diffracted by the objective lens onto a second recording medium, and a diverging light beam of a third wavelength diffracted by the objective lens onto a third recording medium. The three light beams are focused at three different working distances from the objective lens and the diffraction orders of the diffracted light of two of the light beams is the same. The objective lens satisfies certain conditions related to the shortest of the three different working distances, the focal length of the objective lens element at the shortest of the three wavelengths, and the thickness of the objective lens.

摘要翻译： 物镜形成为在一侧具有衍射面的物镜元件。 物镜将由物镜衍射的第一波长的准直光束聚焦到第一记录介质上，将由物镜衍射的第二波长的准直光束聚焦到第二记录介质上，并将第三波长的发散光束 波长由物镜衍射到第三记录介质上。 三个光束聚焦在与物镜三个不同的工作距离处，两个光束的衍射光的衍射级相同。 物镜满足与三个不同工作距离中最短的物体相关的某些条件，三个波长中最短的物镜的焦距和物镜的厚度。

公开(公告)号：US07215487B2

公开(公告)日：2007-05-08

申请号：US11365852

申请日：2006-03-02

申请人： Tetsuya Ori

发明人： Tetsuya Ori

IPC分类号： G02B15/14 ,  G02B13/04

CPC分类号： G02B15/177 ,  G02B27/646

摘要： A zoom lens includes a function of preventing blurring of an image due to movements, such as shaking of the zoom lens, by moving the second lens group, in order from the object side, orthogonally to the optical axis in order to correct for blurring of an image due to movements of the zoom lens. The zoom lens includes a first lens group having negative refractive power, a second lens group having positive refractive power, and a third lens group having positive refractive power. The first and second lens groups move along the optical axis during zooming, as does the third lens group in all but one embodiment of the invention. The zoom lens satisfies certain conditions related to the configuration of the lens elements and lens groups of the zoom lens in order to prevent blurring and to provide a compact zoom lens having excellent correction of aberrations.

摘要翻译： 变焦透镜包括通过从对象侧与光轴正交地移动第二透镜组来防止由于诸如摇动变焦透镜的移动而导致的图像模糊的功能，以便校正模糊 由于变焦镜头的移动引起的图像。 变焦透镜包括具有负屈光力的第一透镜组，具有正屈光力的第二透镜组和具有正折光力的第三透镜组。 第一透镜组和第二透镜组在变焦期间沿着光轴移动，与本发明的一个实施例中的第三透镜组一样。 变焦透镜满足与变焦透镜的透镜元件和透镜组的配置相关的某些条件，以防止模糊，并提供具有优异的像差校正的紧凑型变焦透镜。

公开(公告)号：US20070025204A1

公开(公告)日：2007-02-01

申请号：US11492085

申请日：2006-07-25

申请人： Masao Mori ,  Toshiaki Katsuma ,  Tetsuya Ori ,  Yu Kitahara

发明人： Masao Mori ,  Toshiaki Katsuma ,  Tetsuya Ori ,  Yu Kitahara

IPC分类号： G11B7/00 ,  G11B7/135

CPC分类号： G02B5/32 ,  G03H1/265 ,  G11B7/1353 ,  G11B7/13927 ,  G11B7/22

摘要： An objective optical system for optical recording media and an optical pickup device using the objective optical system includes a holographic optical element that includes angularly-multiplexed holograms for correcting spherical aberration and/or coma aberration due to variations in substrate thicknesses of recording media and errors by tilting the holographic optical element out of the plane perpendicular to the optical axis by specified amounts. A control system determines the spherical aberration and/or coma using a control unit and outputs command signals for controlling the amount of tilt. The angularly-multiplexed holograms may change an input substantially collimated light beam to a divergent or convergent light beam except when the substrate of the optical recording media has a specified thickness. Additionally, the holographic optical element may include wavelength-multiplexed holograms to correct for chromatic aberration due to mode hopping of a semiconductor laser light source.

摘要翻译： 用于光学记录介质的物镜光学系统和使用物镜光学系统的光学拾取装置包括全息光学元件，其包括用于校正由于记录介质的基板厚度的变化引起的球面像差和/或彗形像差的角度复用全息图和误差 将全息光学元件倾斜垂直于光轴的平面指定的量。 控制系统使用控制单元确定球面像差和/或彗差，并输出用于控制倾斜量的命令信号。 角度复用的全息图可以将输入的基本上准直的光束改变为发散或会聚的光束，除非光记录介质的基板具有指定的厚度。 另外，全息光学元件可以包括波长复用的全息图，以校正由于半导体激光光源的跳跃引起的色像差。

公开(公告)号：US20060215278A1

公开(公告)日：2006-09-28

申请号：US11365841

申请日：2006-03-02

申请人： Tetsuya Ori

发明人： Tetsuya Ori

IPC分类号： G02B15/14

CPC分类号： G02B15/173 ,  G02B27/646

摘要： A zoom optical system includes a function of preventing blurring of an image due to movements, such as shaking of the zoom optical system, by moving a lens element of the third lens group, in order from the object side, of four lens groups in a direction that is perpendicular to the optical axis in order to correct for movements of the zoom optical system that would otherwise create a blurred image. The second lens group from the object side has negative refractive power and the other three lens groups have positive refractive power. The second and fourth lens groups move along the optical axis during zooming. The zoom optical system satisfies certain conditions related to the configuration of the lens elements and lens groups of the zoom optical system in order to prevent blurring and to provide a compact zoom optical system having excellent correction of aberrations.

摘要翻译： 变焦光学系统包括通过从物体侧依次移动第三透镜组的透镜元件的四个透镜组的方式，防止由于诸如摇动变焦光学系统的移动而引起的图像模糊的功能 方向垂直于光轴，以便校正否则将产生模糊图像的变焦光学系统的运动。 来自物体侧的第二透镜组具有负折射光焦度，另外三个透镜组具有正折射光焦度。 第二和第四透镜组在变焦期间沿光轴移动。 变焦光学系统满足与变焦光学系统的透镜元件和透镜组的配置有关的某些条件，以防止模糊，并且提供具有优异的像差校正的紧凑变焦光学系统。