公开(公告)号：US06965482B2

公开(公告)日：2005-11-15

申请号：US10895352

申请日：2004-07-21

申请人： Yasuyuki Sugi ,  Takesuke Maruyama

发明人： Yasuyuki Sugi ,  Takesuke Maruyama

IPC分类号： G02B13/00 ,  G02B3/00 ,  G02B13/18 ,  G11B7/00 ,  G11B7/135 ,  G11B7/1374

CPC分类号： G11B7/1374 ,  G02B3/00 ,  G11B7/1353 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006

摘要： When the DVD provided with the DVD substrate 2 having thickness t2 of 0.6 mm is installed in the optical disc apparatus, the light beam 4 having wavelength λ1=655 nm is used as luminous flux of numerical aperture NA=0.63 to be condensed on the information surface 2a on the DVD substrate 2. When the CD provided with the CD substrate 3 having thickness t2 of 1.2 mm is installed in the optical disc apparatus, the light beam 5 having wavelength λ2=790 nm is effectively used as luminous flux of approximate numerical aperture NA=0.45 to be condensed on the information surface 3a on the DVD substrate 3. The wavefront aberration caused by a thickness difference between the DVD substrate 2 and CD substrate 3 is canceled out by the chromatic aberration caused by a wavelength difference between the light beams 4 and 5. Therefore, in spite of the difference in the transparent substrates, the light beams are suitably condensed respectively on the information surface 2a and 3a.

摘要翻译： 当设置有厚度为0.2mm的DVD基板2的DVD被安装在光盘装置中时，波长λ1 = 655nm的光束4是 用作数值孔径NA = 0.63的光通量在DVD基板2上的信息表面2a上聚光。 当光盘装置中安装有具有1.2mm厚度t 2的CD基板3的CD时，波长λ2 = 790nm的光束5是 有效地用作近似数值孔径NA = 0.45的光通量在DVD基板3上的信息表面3a上聚焦。 由DVD基板2和CD基板3之间的厚度差引起的波前像差由于光束4,5之间的波长差造成的色差而抵消。 因此，尽管透明基板的差异，光束分别适当地冷凝在信息表面2a和3a上。

公开(公告)号：US06678096B2

公开(公告)日：2004-01-13

申请号：US10330289

申请日：2002-12-30

申请人： Yasuyuki Sugi ,  Takesuke Maruyama

发明人： Yasuyuki Sugi ,  Takesuke Maruyama

IPC分类号： G02B1318

CPC分类号： G11B7/1374 ,  G02B3/00 ,  G11B7/1353 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006

摘要： When the DVD provided with the DVD substrate 2 having thickness t2of 0.6 mm is installed in the optical disc apparatus, the light beam 4 having wavelength &lgr;1=655 nm is used as luminous flux of numerical aperture NA=0.63 to be condensed on the information surface 2a on the DVD substrate 2. When the CD provided with the CD substrate 3 having thickness t2 of 1.2 mm is installed in the optical disc apparatus, the light beam 5 having wavelength &lgr;2=790 nm is effectively used as luminous flux of approximate numerical aperture NA=0.45 to be condensed on the information surface 3a on the DVD substrate 3. The wavefront aberration caused by a thickness difference between the DVD substrate 2 and CD substrate 3 is canceled out by the chromatic aberration caused by a wavelength difference between the light beams 4 and 5. Therefore, in spite of the difference in the transparent substrates, the light beams are suitably condensed respectively on the information surface 2a and 3a.

摘要翻译： 当设置有厚度为0.2mm的DVD基板2的DVD被安装在光盘装置中时，使用波长λ1= 655nm的光束4作为数值孔径NA = 0.63的光通量在信息表面上被冷凝 当设置有厚度t2为1.2mm的CD基板3的CD安装在光盘装置中时，波长λ2= 790nm的光束5被有效地用作近似数值孔径的光通量 NA = 0.45被聚集在DVD基板3上的信息表面3a上。由DVD基板2和CD基板3之间的厚度差引起的波前像差由于光束之间的波长差引起的色差而被抵消 因此，尽管透明基板的差异，光束分别适当地冷凝在信息表面2a和3a上。

公开(公告)号：US5699341A

公开(公告)日：1997-12-16

申请号：US711466

申请日：1996-09-11

申请人： Yasuyuki Sugi ,  Toshio Sugiyama ,  Nobuo Imada ,  Hidenori Shinohara ,  Yukio Fukui

发明人： Yasuyuki Sugi ,  Toshio Sugiyama ,  Nobuo Imada ,  Hidenori Shinohara ,  Yukio Fukui

IPC分类号： G11B7/00 ,  G11B7/135 ,  G11B19/12

CPC分类号： G11B7/13925 ,  G11B19/12 ,  G11B7/1376 ,  G11B7/1378 ,  G11B2007/0006

摘要： The present invention comprises an arrangement with removable optical element having a predetermined focal distance in the light path between a light source and an objective lens, so as to insert said optical element into the light path between the light source and the objective lens for playing back or recording onto one type of thickness of disk plates, as well as to remove it therefrom for playing back or recording onto another type of thickness of disk plates. Alternatively, by retaining variably the distance between the light source and the collimator lens, the distance between the light source and the collimator lens along with the light path is variably changed according to the thickness of the disk plate being inserted. Then by determining the type of the disk inserted and accordingly selectably inserting/removing the optical element, only one objective lens may be used to conform to the disk plates having different thicknesses.

摘要翻译： 本发明包括具有在光源和物镜之间的光路中具有预定焦距的可拆卸光学元件的装置，以便将所述光学元件插入光源和物镜之间的光路中以便回放 或记录在一种类型的盘片的厚度上，以及将其从中移除，以便播放或记录到另一种厚度的盘片上。 或者，通过可变地保持光源和准直透镜之间的距离，光源与准直透镜之间的距离以及光路可根据插入的盘片的厚度而变化。 然后，通过确定插入的盘的类型并相应地可选择地插入/移除光学元件，可以仅使用一个物镜来符合具有不同厚度的盘片。

公开(公告)号：US07619836B2

公开(公告)日：2009-11-17

申请号：US12232801

申请日：2008-09-24

申请人： Yoshiaki Minakawa ,  Yasuyuki Sugi

发明人： Yoshiaki Minakawa ,  Yasuyuki Sugi

IPC分类号： G02B9/06 ,  G02B9/04 ,  G11B7/00

CPC分类号： G02B9/08 ,  G02B13/003

摘要： An imaging lens unit comprising, in order from the object side, a first lens having a meniscus shape with its convex surface on the object side, an aperture stop and a second lens having a meniscus shape with its convex surface on the image side. A maximal value of a tangent angle within a range of a lens surface effective diameter of the surface on the object side of the first lens is 70 to 90 degrees. A maximal value of a tangent angle within a range of a lens surface effective diameter of the surface on the image side of the second lens is 70 to 90 degrees.

摘要翻译： 一种成像透镜单元，其从物体侧起依次包括具有在物体侧上具有凸面的弯月面形状的第一透镜，具有在像侧上具有凸面的弯月面形状的孔径光阑和第二透镜。 在第一透镜的物体侧的表面的透镜表面有效直径的范围内的切线角的最大值为70〜90度。 在第二透镜的图像侧的表面的透镜表面有效直径的范围内的切线角的最大值为70度至90度。

公开(公告)号：US06836378B2

公开(公告)日：2004-12-28

申请号：US10670209

申请日：2003-09-26

申请人： Yasuyuki Sugi ,  Takesuke Maruyama

发明人： Yasuyuki Sugi ,  Takesuke Maruyama

IPC分类号： G02B1318

CPC分类号： G11B7/1374 ,  G02B3/00 ,  G11B7/1353 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006

摘要： When the DVD provided with the DVD substrate 2 having thickness t2 of 0.6 mm is installed in the optical disc apparatus, the light beam 4 having wavelength &lgr;1=655 nm is used as luminous flux of numerical aperture NA=0.63 to be condensed on the information surface 2a on the DVD substrate 2. When the CD provided with the CD substrate 3 having thickness t2 of 1.2 mm is installed in the optical disc apparatus, the light beam 5 having wavelength &lgr;2=790 nm is effectively used as luminous flux of approximate numerical aperture NA=0.45 to be condensed on the information surface 3a on the DVD substrate 3. The wavefront aberration caused by a thickness difference between the DVD substrate 2 and CD substrate 3 is canceled out by the chromatic aberration caused by a wavelength difference between the light beams 4 and 5. Therefore, in spite of the difference in the transparent substrates, the light beams are suitably condensed respectively on the information surface 2a and 3a.

摘要翻译： 当设置有厚度t2为0.6mm的DVD基板2的DVD被安装在光盘装置中时，使用波长λ1= 655nm的光束4作为数据孔径NA = 0.63的光通量在信息上被浓缩 表面2a在DVD基板2上。当具有厚度t2为1.2mm的CD基板3的CD安装在光盘装置中时，具有波长λ2= 790nm的光束5被有效地用作近似数值的光通量 孔径NA = 0.45被聚集在DVD基板3上的信息表面3a上。由DVD基板2和CD基板3之间的厚度差引起的波前像差由于光线之间的波长差引起的色差而被抵消 因此，尽管透明基板的差异，光束分别适当地冷凝在信息表面2a和3a上。

公开(公告)号：US06507009B1

公开(公告)日：2003-01-14

申请号：US09347530

申请日：1999-07-06

申请人： Kunikazu Ohnishi ,  Takeshi Shimano ,  Shigeru Nakamura ,  Masayuki Inoue ,  Yukio Fukui ,  Yasuyuki Sugi ,  Shinji Fujita ,  Mitsuhiko Ota

发明人： Kunikazu Ohnishi ,  Takeshi Shimano ,  Shigeru Nakamura ,  Masayuki Inoue ,  Yukio Fukui ,  Yasuyuki Sugi ,  Shinji Fujita ,  Mitsuhiko Ota

IPC分类号： G02B704

CPC分类号： G11B7/131 ,  G11B7/00718 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0909 ,  G11B7/094 ,  G11B7/0943

摘要： It is desirable to greatly reduce the disturbance that arises in a focusing error signal by a astigmatic detection method and offset that arises in the tracking error signal by a push-pull method when reproducing various information storing disks, such as a DVD-RAM disk. It is also desirable to provide an optical disk apparatus which is able to reproduce a variety of high density optical disks, such as DVD-RAM and DVD-ROM disks, as well as conventional disks, such as CD, CD-ROM, CD-R disks, by using a simple optional head. For this purpose, an optical disk apparatus irradiates three optical beams produced by a diffraction grating on the specified position of an optical disk and detects reflected light using a specified optical detector divided into twelve parts.

摘要翻译： 期望通过散像检测方法和再现各种信息存储盘（例如DVD-RAM盘）时通过推挽方法在跟踪误差信号中产生的偏移来大大降低在聚焦误差信号中产生的干扰。 还希望提供能够再现诸如DVD-RAM和DVD-ROM盘的各种高密度光盘以及诸如CD，CD-ROM，CD-ROM等常规盘的光盘装置， R盘，通过使用简单的可选头。 为此，光盘装置将由衍射光栅产生的三个光束照射在光盘的指定位置上，并使用分为十二部分的特定光学检测器检测反射光。

公开(公告)号：US5301064A

公开(公告)日：1994-04-05

申请号：US680703

申请日：1991-04-04

申请人： Yasuyuki Sugi ,  Yoshiaki Tachibana

发明人： Yasuyuki Sugi ,  Yoshiaki Tachibana

IPC分类号： G02B15/163 ,  G02B15/17 ,  G02B15/14

CPC分类号： G02B15/17

摘要： A rear focusing type zoom lens system which comprises, as arrayed sequentially when viewed from the object side, a first lens group having a positive refracting power, second and third lens groups having negative refracting powers, respectively, and serving for zooming function when moved along an optical axis, a fourth lens group having a positive refracting power and constantly fixed stationarily, and a fifth lens group having a positive refracting power and serving for image formation function, wherein focusing is performed by moving a single lens element of the fifth lens group along the optical axis. Due to this arrangement, the number of the lens elements required to move for focusing can be reduced while assuring a high variable magnification power and a smaller F-value.

摘要翻译： 一种后聚焦型变焦透镜系统，其特征在于，从物体侧观察时依次排列具有正折射率的第一透镜组，具有负折射光的第二透镜组和第三透镜组，并且当沿着该方向移动时用于变焦功能 光轴，具有正折射力并恒定地固定的第四透镜组以及具有正折射率并用于图像形成功能的第五透镜组，其中通过移动第五透镜组的单个透镜元件进行聚焦 沿着光轴。 由于这种布置，可以减少用于聚焦的移动所需的透镜元件的数量，同时确保高可变放大倍数功率和较小的F值。