公开(公告)号：US06777667B2

公开(公告)日：2004-08-17

申请号：US09993487

申请日：2001-11-27

申请人： Daisuke Koreeda

发明人： Daisuke Koreeda

IPC分类号： G02B2608

CPC分类号： H04N1/053 ,  H04N1/113 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0098 ,  H04N2201/04762

摘要： Disclosed is a scanning optical system that includes a laser source for emitting a laser beam, a scanning deflector that deflects the laser beam, an imaging optical system that converges the scanning laser beam onto an object surface, first and second mirrors that bend the optical path of the scanning laser beam. The first and second mirrors are movable to adjust the optical path length between the deflector and the object surface for changing a width of the scanning range on the object surface. Since the optical path length is adjusted by moving the first and second mirror, which changes the width of the scanning range, correcting the size error of the printed image. When the size error of the printed image is detected, an operator moves the first and second mirrors to correct it.

摘要翻译： 公开了一种扫描光学系统，其包括用于发射激光束的激光源，使激光束偏转的扫描偏转器，将扫描激光束会聚到物体表面上的成像光学系统，使光路弯曲的第一和第二反射镜 的扫描激光束。 第一和第二反射镜可移动以调节偏转器和物体表面之间的光程长度，以改变物体表面上扫描范围的宽度。 由于通过移动改变扫描范围的宽度的第一和第二反射镜来调整光程长度，校正打印图像的尺寸误差。 当检测到打印图像的尺寸误差时，操作者移动第一和第二反射镜以对其进行校正。

公开(公告)号：US06731419B2

公开(公告)日：2004-05-04

申请号：US10290161

申请日：2002-11-08

申请人： Daisuke Koreeda

发明人： Daisuke Koreeda

IPC分类号： G02B2608

CPC分类号： G02B26/125 ,  G02B26/123

摘要： There is provided a scanning optical system, which is provided with a deflector that deflects the plurality of beams, and an imaging optical system that converges the plurality of beams deflected by the deflector to form a plurality of beam spots on surfaces to be scanned, respectively. The imaging optical system has at least one lens whose position is changeable in a plane including an optical reference axis thereof and parallel with the main scanning direction. In this configuration, the imaging optical system satisfies a condition: 0.05

摘要翻译： 提供了一种扫描光学系统，其设置有偏转多个光束的偏转器，以及成像光学系统，其收敛由偏转器偏转的多个光束，以在待扫描的表面上分别形成多个光束点 。 成像光学系统具有至少一个透镜，其位置在包括其光学参考轴并且与主扫描方向平行的平面中是可变的。 在该结构中，成像光学系统满足条件：0.05

公开(公告)号：US06396627B1

公开(公告)日：2002-05-28

申请号：US09584943

申请日：2000-06-01

申请人： Satoru Tachihara ,  Chinari Tanaka ,  Daisuke Koreeda ,  Tetsuya Nakamura ,  Nobutaka Minefuji ,  Takaomi Sekiya ,  Eiichi Ito

发明人： Satoru Tachihara ,  Chinari Tanaka ,  Daisuke Koreeda ,  Tetsuya Nakamura ,  Nobutaka Minefuji ,  Takaomi Sekiya ,  Eiichi Ito

IPC分类号： G02B2106

CPC分类号： G02B21/22

摘要： The stereoscopic microscope includes a common close-up optical system that faces an object, a pair of zoom optical systems that form a pair of primary image, a pair of field stops, a pair of relay optical systems that relay the primary images to form a pair of secondary images, an inter-axis distance reducing element, an image taking device and an illuminating optical system. The object light rays incident on the close-up optical system form the primary images having predetermined parallax at the field stops through the zoom optical systems. The inter-axis distance reducing element reduces the inter-axis distance of the right and left light rays. The primary images are re-imaged by the relay optical systems as the secondary images on the adjacent regions on the single image taking surface of the image taking device, respectively.

摘要翻译： 立体显微镜包括面向物体的共同的特写光学系统，形成一对原始图像的一对变焦光学系统，一对场停止，一对中继光学系统，其中继主要图像以形成 一对二次图像，轴间距离减小元件，摄像装置和照明光学系统。 入射在特写光学系统上的物体光线通过变焦光学系统形成在场停止处具有预定视差的主要图像。 轴间距减小元件减小左右光线的轴间距离。 主要图像由继电光学系统重新成像为分别在摄像装置的单个图像拍摄表面上的相邻区域上的次要图像。

公开(公告)号：US20120075979A1

公开(公告)日：2012-03-29

申请号：US13311671

申请日：2011-12-06

申请人： Koichi MARUYAMA ,  Yoshiyuki TASHIRO ,  Daisuke KOREEDA

发明人： Koichi MARUYAMA ,  Yoshiyuki TASHIRO ,  Daisuke KOREEDA

IPC分类号： G11B7/1353

CPC分类号： G11B7/1367 ,  G02B27/42 ,  G02B27/4238 ,  G02B27/4294 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

摘要： A method of designing an optical element to be used for an optical system in which each of a plurality of light beams having different design wavelengths passes through the optical element is provided. The method includes determining at least two types of optical path difference functions including first and second optical path difference functions in such a manner that proportion, brought by the first optical path difference function, between diffraction orders at which diffraction efficiencies of the plurality of light beams are maximized is different from proportion, brought by the second optical path difference function, between diffraction orders at which diffraction efficiencies of the plurality of light beams are maximized, and obtaining a shape defined by combining the at least two types of optical path difference functions so as to apply the obtained shape to at least one surface of surfaces of the optical element.

摘要翻译： 提供一种设计用于光学系统的光学元件的方法，其中具有不同设计波长的多个光束中的每一个通过光学元件。 该方法包括确定包括第一和第二光程差函数的至少两种类型的光程差函数，使得由第一光程差函数带来的比例在衍射级之间，衍射级之间的多个光束的衍射效率 最大化不同于由第二光程差函数引起的比例，在多个光束的衍射效率最大化的衍射级之间，并且获得通过组合至少两种类型的光程差函数而定义的形状 以将获得的形状施加到光学元件的表面的至少一个表面。

公开(公告)号：US07839752B2

公开(公告)日：2010-11-23

申请号：US11536004

申请日：2006-09-28

申请人： Daisuke Koreeda ,  Koichi Maruyama ,  Shuichi Takeuchi ,  Yoshiyuki Tashiro

发明人： Daisuke Koreeda ,  Koichi Maruyama ,  Shuichi Takeuchi ,  Yoshiyuki Tashiro

IPC分类号： G11B7/135

CPC分类号： G11B7/1374 ,  G11B7/1275 ,  G11B7/13922 ,  G11B2007/0006

摘要： There is provided an optical disc drive for recordation/reproduction for three types of optical discs by selectively using one of three types of light beams. The optical disc drive comprises an objective lens. The objective lens has a step structure which gives an optical path length difference to an incident beam at each step. When the third laser beam passes through the objective lens, the objective lens produces normal diffraction order light converging to a recording surface of the third optical disc and undesired diffraction order light converging to a point deviating from the recording surface of the third optical disc. A distance from a point to which the normal diffraction order light converges to a point to which the undesired diffraction order light converges is larger than or equal to twice a pull-in range of a focus error signal obtained when the third optical disc is used.

摘要翻译： 通过选择性地使用三种类型的光束之一，提供了用于三种类型的光盘的记录/再现的光盘驱动器。 光盘驱动器包括物镜。 物镜具有在每个步骤中给入射光束的光程长度差的阶梯结构。 当第三激光束通过物镜时，物镜产生会聚到第三光盘的记录表面的正常衍射级光，并且不期望的衍射级光会聚到偏离第三光盘的记录表面的点。 从法线衍射级光收敛到不期望的衍射级光会聚的点的距离大于或等于当使用第三光盘时获得的聚焦误差信号的拉入范围的两倍。

公开(公告)号：US20090154325A1

公开(公告)日：2009-06-18

申请号：US12330861

申请日：2008-12-09

申请人： Satoshi INOUE ,  Daisuke KOREEDA ,  Shuichi TAKEUCHI

发明人： Satoshi INOUE ,  Daisuke KOREEDA ,  Shuichi TAKEUCHI

IPC分类号： G11B7/00

CPC分类号： G11B7/13922 ,  G11B7/0908 ,  G11B7/1374 ,  G11B2007/0006

摘要： There is provided an objective lens for information recording/reproducing for three types of optical discs, which includes a first area contributing to converging a third light beam onto a record surface of a third optical disc. The first area includes a phase shift structure having refractive surface zones concentrically formed about a predetermined axis. The phase shift structure includes first and second step groups. The first step group is configured such that an optical path length difference ΔOPD1 (nm) given by each step of the first step group to a first light beam satisfies a condition: 2N1+1.10

摘要翻译： 提供了一种用于三种类型的光盘的信息记录/再现的物镜，其包括有助于将第三光束会聚到第三光盘的记录表面上的第一区域。 第一区域包括具有围绕预定轴线同心地形成的折射表面区域的相移结构。 相移结构包括第一和第二步骤组。 第一步骤组被配置为使得由第一步骤组的每个步骤给出的第一光束的光程长度差ΔOPD1（nm）满足条件：2N1 + 1.10 <|ΔOPD1/λ1| <2N1 + 1.40，其中 N1是整数或零，并且第二步骤组被配置为使得由第二步骤组的每个步骤给予的第一光束的光程长度差ΔOPD2（nm）满足条件：2N2-0.10 <|ΔOPD2/ lambda1 | <2N2 + 0.10，其中N2是整数。

公开(公告)号：US20090052305A1

公开(公告)日：2009-02-26

申请号：US12195639

申请日：2008-08-21

申请人： Daisuke KOREEDA ,  Shuichi TAKEUCHI

发明人： Daisuke KOREEDA ,  Shuichi TAKEUCHI

IPC分类号： G11B7/135

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

摘要： There is provided an optical pick-up including first to third light sources respectively emitting first to third light beams, a first coupling lens, and an objective lens formed to converge each of the first, second and third light beams onto the first, second and third optical discs, respectively. The objective lens has a step structure including a plurality of concentrically formed refractive surface zones divided by steps, the step structure having a function of giving, at each step, an optical path length difference of approximately 2λ1 to the first light beam. The first coupling lens causes the first light beam to be incident on the objective lens as a converging beam. The objective lens is positioned to satisfy a condition: −0.35

摘要翻译： 提供了包括分别发射第一至第三光束的第一至第三光源的光学拾取器，第一耦合透镜和物镜，其将第一，第二和第三光束中的每一个会聚到第一，第二和第二光束上， 第三光盘。 物镜具有阶梯结构，其包括多个同心形成的折射表面区域，该台阶结构具有在每个步骤中给予大约2λ1与第一光束的光程差的功能。 第一耦合透镜使第一光束作为会聚光束入射到物镜上。 物镜被定位成满足条件：<？in-line-formula description =“In-line Formulas”end =“lead”？> -0.35

公开(公告)号：US20070286054A1

公开(公告)日：2007-12-13

申请号：US11762096

申请日：2007-06-13

申请人： Tomokazu KOIZUMI ,  Shuichi TAKEUCHI ,  Daisuke KOREEDA

发明人： Tomokazu KOIZUMI ,  Shuichi TAKEUCHI ,  Daisuke KOREEDA

IPC分类号： G11B7/00

CPC分类号： G02B27/1013 ,  G02B27/144 ,  G02B27/145 ,  G11B7/1353 ,  G11B7/1374 ,  G11B2007/0006

摘要： An objective lens for an optical information recording/reproducing device (executing information reading or writing on first through third optical discs having different data densities and different protective layer thicknesses t1-t3 (t1≦t2≦t3)) by selectively using first through third substantially collimated light beams having first through third wavelengths λ1-λ3 (λ1 m(λ2)≧m(λ3)≧1.

摘要翻译： 用于光学信息记录/再现装置的物镜（执行具有不同数据密度和不同保护层厚度t 1 -t 3（t 1 <= t 2 <= t 3）的第一至第三光盘的信息读取或写入） 通过选择性地使用具有第一至第三波长λ1-λ3（λ1<λ3）的第一至第三基本上准直的光束）包括在固结表面处胶合在一起的第一光学构件和第二光学构件。 在固定数值孔径NA 3所需的入射高度（在第三光盘上进行信息读/写所需）的入射高度的至少一个区域设置有包括环形区域的衍射结构。 衍射结构形成为使得其衍射效率最大化的第一至第三光束的衍射级m（λ1），m（λ2）和m（λ3）满足m（λ1）> m（λ2）> = m（λ3）> = 1。

公开(公告)号：US07239598B2

公开(公告)日：2007-07-03

申请号：US10867736

申请日：2004-06-16

申请人： Koichi Maruyama ,  Daisuke Koreeda

发明人： Koichi Maruyama ,  Daisuke Koreeda

IPC分类号： G11B7/00

CPC分类号： G11B7/1367 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1374 ,  G11B2007/0006

摘要： There is provided an objective lens for an optical pick-up which is used to record/reproduce data to/from at least three types of optical discs. Thicknesses t1, t2 and t3 of cover layers of first, second third optical discs are t1≅0.6 mm, t2≅0.6 mm, and t3≅1.2 mm. Numerical apertures NA1, NA2 and NA3 for the first, second and third optical discs satisfy a relationship NA1≧NA2>NA3. When the first optical disc is used, a substantially collimated light beam is incident on the objective lens. When the second or third optical disc is used, a diverging beam is incident on the objective lens. With regard to magnifications M1, M2 and M3 and focal lengths f1, f2 and f3 of the objective lens for the first, second and third optical discs, the following conditions (1), (2) and (3) are satisfied: −0.02

摘要翻译： 提供了用于光学拾取器的物镜，其用于向/从至少三种类型的光盘记录/再现数据。 第一，第二三个光盘的覆盖层的厚度t 1，t 2和t 3分别为t 1≅0.6mm，t 2≅0.6 mm，t 3≅1.2mm。 第一，第二和第三光盘的数值孔径NA 1，NA 2和NA 3满足关系NA 1> = NA 2> NA 3。 当使用第一光盘时，基本上准直的光束入射到物镜上。 当使用第二或第三光盘时，发散光束入射到物镜上。 关于用于第一，第二和第三光盘的物镜的放大率M 1，M 2和M 3以及焦距f 1，f 2和f 3，以下条件（1），（2）和（3 ）满足：<？in-line-formula description =“In-line formula”end =“lead”？> - 0.02 <？in-line-formula description =“In-line Formulas”end =“lead”？> - 0.10 <？in-line-formula description =”In-line Formulas“end =”lead“？> - 0.29

公开(公告)号：US20070014211A1

公开(公告)日：2007-01-18

申请号：US11456943

申请日：2006-07-12

申请人： Daisuke Koreeda ,  Koichi Maruyama ,  Shuichi Takeuchi ,  Yoshiyuki Tashiro

发明人： Daisuke Koreeda ,  Koichi Maruyama ,  Shuichi Takeuchi ,  Yoshiyuki Tashiro

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G11B2007/0006

摘要： There is provided an objective lens used for three types of optical discs including by selectively using one of three types of light beams. At least one of surfaces of the objective lens is provided with a first region converging the third light beam on a recoding surface of the third optical disc. The first region has a step structure configured to have concentric refractive surface zones and to give an optical path length difference to an incident beam at each step formed between adjacent refractive surface zones. The step structure is configured such that the optical path length difference given by each step is substantially equal to an odd multiple of a wavelength of a first light beam, and a value of differentiation of an optical path difference function defining the step structure crosses zero in a height ranging from 30% to 70% of an effective diameter of the first region.

摘要翻译： 提供了一种用于三种类型的光盘的物镜，包括通过选择性地使用三种类型的光束之一。 物镜的至少一个表面设置有将第三光束会聚在第三光盘的记录表面上的第一区域。 第一区域具有构造成具有同心折射表面区域并且在相邻折射表面区域之间形成的每个台阶处的入射光束的光程长度差异的台阶结构。 台阶结构被配置为使得由每个步骤给出的光程长度差基本上等于第一光束的波长的奇数倍，并且限定步骤结构的光程差函数的微分值在零 高度为第一区域的有效直径的30％至70％。