公开(公告)号：US08665425B2

公开(公告)日：2014-03-04

申请号：US13640709

申请日：2011-04-05

申请人： Kazuyuki Ogura ,  Masahiro Okitsu ,  Youichi Ogawa ,  Kyu Takada

发明人： Kazuyuki Ogura ,  Masahiro Okitsu ,  Youichi Ogawa ,  Kyu Takada

IPC分类号： G01B9/00 ,  G01M11/02

CPC分类号： G01M11/0221 ,  G01M11/025

摘要： In an eccentricity measuring method according to the present invention, a first position of a light source image formed by reflection at one optical surface is measured (S2), a predetermined second position related to another optical surface is measured (S3), and a relative eccentricity between both optical surfaces is calculated based on the first and second positions (S5). Therefore, the eccentricity measuring method enables measurement of eccentricity by a same measurement optical system regardless of a radius of curvature of an optical surface of an optical element.

摘要翻译： 在根据本发明的偏心测量方法中，测量在一个光学表面上由反射形成的光源图像的第一位置（S2），测量与另一个光学表面相关的预定的第二位置（S3），并且相对 基于第一和第二位置计算两个光学表面之间的偏心度（S5）。 因此，偏心测量方法能够通过相同的测量光学系统来测量偏心度，而与光学元件的光学表面的曲率半径无关。

公开(公告)号：US20130027692A1

公开(公告)日：2013-01-31

申请号：US13640709

申请日：2011-04-05

申请人： Kazuyuki Ogura ,  Masahiro Okitsu ,  Youichi Ogawa ,  Kyu Takada

发明人： Kazuyuki Ogura ,  Masahiro Okitsu ,  Youichi Ogawa ,  Kyu Takada

IPC分类号： G01B11/14

CPC分类号： G01M11/0221 ,  G01M11/025

摘要： In an eccentricity measuring method according to the present invention, a first position of a light source image formed by reflection at one optical surface is measured (S2), a predetermined second position related to another optical surface is measured (S3), and a relative eccentricity between both optical surfaces is calculated based on the first and second positions (S5). Therefore, the eccentricity measuring method enables measurement of eccentricity by a same measurement optical system regardless of a radius of curvature of an optical surface of an optical element.

摘要翻译： 在根据本发明的偏心测量方法中，测量在一个光学表面上由反射形成的光源图像的第一位置（S2），测量与另一个光学表面相关的预定的第二位置（S3），并且相对 基于第一和第二位置计算两个光学表面之间的偏心度（S5）。 因此，偏心测量方法能够通过相同的测量光学系统来测量偏心度，而与光学元件的光学表面的曲率半径无关。

公开(公告)号：US5764397A

公开(公告)日：1998-06-09

申请号：US755013

申请日：1996-11-22

申请人： Nozomu Inoue ,  Yujiro Nomura ,  Takashi Hama ,  Kyu Takada

发明人： Nozomu Inoue ,  Yujiro Nomura ,  Takashi Hama ,  Kyu Takada

IPC分类号： G02B26/12 ,  G02B26/08

CPC分类号： G02B26/129

摘要： An optical scanner comprises: a light source; beam shaping optics for transforming an optical beam from the light source into a convergent beam; a rotating polygonal mirror having at least a first reflecting face for deflecting the convergent beam and a second reflecting face; and transmission optics having a lens, with which the optical beam deflected by the first reflecting face of the rotating polygonal mirror is allowed to be incident on the second reflecting face of the rotating polygonal mirror, with the optical beam incident on the second reflecting face of the rotating polygonal mirror being deflected therefrom to produce a scanning optical beam which scans a predetermined surface to be scanned, wherein the convergent optical beam forms a focused image at a point located between the first reflecting face of the rotating polygonal mirror and the lens in the transmission optics.

摘要翻译： 光学扫描器包括：光源; 光束整形光学器件，用于将光束从光源变换成会聚光束; 旋转多面镜，具有至少第一反射面，用于偏转会聚光束和第二反射面; 以及具有透镜的透射光学器件，由旋转多面镜的第一反射面偏转的光束通过该透镜入射到旋转多面镜的第二反射面上，光束入射在旋转多面镜的第二反射面上 旋转多面镜从其偏转以产生扫描要扫描的预定表面的扫描光束，其中会聚光束在位于旋转多面镜的第一反射面和透镜之间的点处形成聚焦图像 传输光学。

公开(公告)号：US08786965B2

公开(公告)日：2014-07-22

申请号：US13498575

申请日：2010-08-17

申请人： Kenichi Ishii ,  Kyu Takada

发明人： Kenichi Ishii ,  Kyu Takada

IPC分类号： G02B3/02 ,  G02B3/00 ,  G11B7/1374

CPC分类号： G11B7/1374 ,  B23B1/00 ,  B23B27/005 ,  B23B27/06 ,  B29C33/424 ,  B29D11/00009 ,  B29D11/0048 ,  G02B5/1895 ,  G11B7/1353 ,  G11B7/13922 ,  G11B7/22 ,  G11B2007/0006

摘要： A method for processing a material for a die for molding an objective lens which is formed with a multilevel structure on the curved surface thereof, wherein the transfer surface of the objective lens is cut by a tool having a cutting face, the outline of which includes a linear first edge portion, a linear second edge portion extending in a direction which intersects the first edge portion at an acute angle thereto, and a third edge portion which joins the ends of the first and second edge portions, while the die material is rotated around the axis thereof, in a state in which at least the first edge portion and the second edge portion of the tool is inclined with respect to the axis and while the tool is moved only in the axial direction and in the direction which intersects the axis.

摘要翻译： 一种在其弯曲表面上形成多层结构的用于模制成型物镜的模具的材料的处理方法，其中物镜的转印面被具有切割面的工具切割，其轮廓包括 线性第一边缘部分，沿着与第一边缘部分成锐角相交的方向延伸的线性第二边缘部分，以及连接第一边缘部分和第二边缘部分的端部的第三边缘部分，同时模具材料旋转 在其工具的至少第一边缘部分和第二边缘部分相对于轴线倾斜的状态下，并且当工具仅在轴向方向和与轴线相交的方向上移动时 。

公开(公告)号：US08111602B2

公开(公告)日：2012-02-07

申请号：US12999856

申请日：2009-06-01

申请人： Kyu Takada ,  Kiyono Tateyama ,  Kentarou Nakamura

发明人： Kyu Takada ,  Kiyono Tateyama ,  Kentarou Nakamura

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G02B3/04 ,  G02B5/1895 ,  G11B7/1374 ,  G11B7/13922

摘要： Provided are an optical pickup apparatus and an objective lens which can record and/or reproduce information for discs with different recording densities and can realize simplification of the structure of themselves and reducing cost. When the expression (1) is satisfied, step differences of a step structure can be further reduced than those in the case that d1=λ1(n−1) holds, and fine grooves corresponding to a steps structure, formed on an optical-surface transfer surface of a mold for molding the objective lens become shallow, to be easily processed. In addition, the moldability is enhanced because the material of the objective lens easily enters the inner portion of the grooves. Further, a fluctuation of a diffraction efficiency caused when wavelength of a light flux changes or temperature changes is reduced so that information can be recorded and/or reduced stably.

摘要翻译： 提供一种能够记录和/或再现具有不同记录密度的盘的信息的光学拾取装置和物镜，并且可以实现其自身的结构的简化并降低成本。 当满足表达式（1）时，阶梯结构的步长差可以比在d1 =λ1（n-1）成立的情况下的阶梯差更进一步降低，并且形成在光学表面上的与阶梯结构相对应的细槽 用于模制物镜的模具的转印表面变浅，易于加工。 此外，由于物镜的材料容易进入槽的内部，所以成型性得到提高。 此外，当光束波长变化或温度变化时引起的衍射效率的波动减小，从而可以稳定地记录和/或降低信息。

公开(公告)号：US20120182628A1

公开(公告)日：2012-07-19

申请号：US13498575

申请日：2010-08-17

申请人： Kenichi Ishii ,  Kyu Takada

发明人： Kenichi Ishii ,  Kyu Takada

IPC分类号： G02B3/02 ,  B29D11/00

CPC分类号： G11B7/1374 ,  B23B1/00 ,  B23B27/005 ,  B23B27/06 ,  B29C33/424 ,  B29D11/00009 ,  B29D11/0048 ,  G02B5/1895 ,  G11B7/1353 ,  G11B7/13922 ,  G11B7/22 ,  G11B2007/0006

摘要： A method for processing a material for a die for molding an objective lens which is formed with a multilevel structure on the curved surface thereof, wherein the transfer surface of the objective lens is cut by a tool having a cutting face, the outline of which includes a linear first edge portion, a linear second edge portion extending in a direction which intersects the first edge portion at an acute angle thereto, and a third edge portion which joins the ends of the first and second edge portions, while the die material is rotated around the axis thereof, in a state in which at least the first edge portion and the second edge portion of the tool is inclined with respect to the axis and while the tool is moved only in the axial direction and in the direction which intersects the axis.

摘要翻译： 一种在其弯曲表面上形成多层结构的用于模制成型物镜的模具的材料的处理方法，其中物镜的转印面被具有切割面的工具切割，其轮廓包括 线性第一边缘部分，沿着与第一边缘部分成锐角相交的方向延伸的线性第二边缘部分，以及连接第一边缘部分和第二边缘部分的端部的第三边缘部分，同时模具材料旋转 在其工具的至少第一边缘部分和第二边缘部分相对于轴线倾斜的状态下，并且当工具仅在轴向方向和与轴线相交的方向上移动时 。

公开(公告)号：US06445483B1

公开(公告)日：2002-09-03

申请号：US08886469

申请日：1997-07-01

申请人： Kyu Takada ,  Nozomu Inoue ,  Takashi Hama ,  Yujiro Nomura

发明人： Kyu Takada ,  Nozomu Inoue ,  Takashi Hama ,  Yujiro Nomura

IPC分类号： G02B2608

摘要： An improved optical scanning apparatus is adapted to be such that at either end of the scan range, an optical beam deflected by a reflecting surface of a scanner will pass through an anamorphic lens in scanning optics at a position spaced from its optical axis in the sub-scanning direction. The anamorphic lens has such a sectional profile in the sub-scanning direction that the lens thickness at one end of the sub-scanning direction differs from the thickness at the other end. Also, a high speed optical scanning apparatus based on the dual incidence and the oblique incidence, can prevent a positional variation of a scanning line that is due to a shift of each facet of the rotating polygonal mirror, which is caused by an offset of the rotating axis of the rotating polygonal mirror. The scanning apparatus includes a light source, a rotating polygonal mirror with a plural number of reflecting surfaces for reflecting and deflecting an optical beam emitted from the light source, transfer optics for receiving the optical beam that is reflected and deflected by a first reflecting surface of the rotating polygonal mirror and transferring the optical beam to a second reflecting surface of the mirror, and scanning optics for scanning a scanned surface with the optical beam that is reflected and deflected by the second reflecting surface.

公开(公告)号：US5771062A

公开(公告)日：1998-06-23

申请号：US261946

申请日：1994-06-17

申请人： Yujiro Nomura ,  Takashi Suzuki ,  Kyu Takada ,  Nozomu Inoue

发明人： Yujiro Nomura ,  Takashi Suzuki ,  Kyu Takada ,  Nozomu Inoue

IPC分类号： G02B5/09 ,  G02B26/10 ,  G02B27/00 ,  B41J2/47 ,  G01D15/34 ,  G02B26/00

CPC分类号： G02B27/0031 ,  G02B26/10 ,  G02B5/09

摘要： The improved beam scanning apparatus has an optical element that is driven to rotate by means of a drive means so as to be capable of continuous angular displacement with respect to the beam from a light source. The optical element deflects the incident beam so that it is focused to form image on the image plane. It is provided with an entrance face, a reflecting face and an exit face which have their shape specified in such a way as to achieve effective correction of aberration, provide higher resolution, and reduce the size and cost of the apparatus.

摘要翻译： 改进的光束扫描装置具有通过驱动装置被驱动旋转以便能够相对于来自光源的光束连续的角位移的光学元件。 光学元件偏转入射光束，使其聚焦以在图像平面上形成图像。 其具有入射面，反射面和出射面，其形状规定为能够有效校正像差，提供更高的分辨率，并且减小设备的尺寸和成本。

公开(公告)号：US5673136A

公开(公告)日：1997-09-30

申请号：US604901

申请日：1996-02-22

申请人： Nozomu Inoue ,  Takashi Hama ,  Yujiro Nomura ,  Kyu Takada

发明人： Nozomu Inoue ,  Takashi Hama ,  Yujiro Nomura ,  Kyu Takada

IPC分类号： B41J2/44 ,  G02B7/00 ,  G02B26/10 ,  G02B26/12 ,  G03G15/04 ,  G02B26/08

CPC分类号： G02B7/008 ,  G02B26/12

摘要： An optical scanner that has a simple construction and which yet exhibits satisfactory imaging performance under varying temperature conditions. Of the two orthogonal scanning cross sections of scanning optics (i.e., the main and sub-scanning cross sections), the one that involves the greater movement of the image plane due to the temperature-dependent changes in optical characteristics (e.g. the variation in the operating wavelength of a light source, the index variation of a lens material and the thermal expansion of a lens itself) is adapted to be the same as the other cross section that involves the greater movement of the image plane due to the change in the distance from the light source to a collimator lens. If necessary, additional correction is effected in such a way that the scanning cross section that involves the greater overall movement of the image plane after correction for temperature changes is adapted to be different from the cross section that involves the greater amount of optical field curvature.

摘要翻译： 一种光学扫描仪，具有简单的结构，并且在变化的温度条件下表现出令人满意的成像性能。 在扫描光学器件的两个正交扫描横截面（即主扫描和副扫描截面）中，由于光学特性的温度依赖性变化（例如， 光源的工作波长，透镜材料的折射率变化和透镜本身的热膨胀）适合于与由于距离变化引起的图像平面更大移动的另一横截面相同 从光源到准直透镜。 如果需要，进行附加的校正，使得在校正温度变化之后涉及图像平面的更大整体运动的扫描横截面适于与涉及更大量的光场曲率的横截面不同。

公开(公告)号：US5610647A

公开(公告)日：1997-03-11

申请号：US971908

申请日：1992-12-18

申请人： Kyu Takada

发明人： Kyu Takada

IPC分类号： B41J2/47 ,  G02B26/12 ,  G06K15/12 ,  H04N1/113 ,  H04N1/12 ,  H04N1/19 ,  H04N1/191 ,  H04N1/195 ,  G03G13/04 ,  B41J2/435 ,  G02B26/10

CPC分类号： H04N1/1917 ,  B41J2/473 ,  G02B26/123 ,  G06K15/1261 ,  H04N1/1911 ,  H04N1/19505 ,  H04N1/19515 ,  H04N1/19531 ,  H04N1/19547 ,  H04N1/19563 ,  H04N1/19573 ,  H04N1/19589 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/19

摘要： An image forming apparatus including an image bearing member, a charging unit, a laser beam scanning apparatus and a developing unit. The laser beam scanning apparatus includes a semiconductor laser array for emitting laser beams, a collimator lens for collimating the beams, a rotating polygon mirror for deflecting the beams collimated by the lens, and an aperture stop between the laser array and the mirror. The following relations between the aforementioned elements of the apparatus are satisfied: ##EQU1## where f is a focal length of the collimator lens; s is a distance between a focal point on a mirror side of the collimator lens and the aperture stop; t is a distance between one of the light emitting portions that is spaced farthest, relative to others of the light emitting portions, from the optical axis; D is a diameter of the aperture stop, and d is a diameter of each of the laser beams collimated by the collimator lens.

摘要翻译： 一种图像形成装置，包括图像承载部件，充电单元，激光束扫描装置和显影单元。 激光束扫描装置包括用于发射激光束的半导体激光器阵列，用于准直光束的准直透镜，用于偏转由透镜准直的光束的旋转多面镜，以及激光阵列和反射镜之间的孔径光阑。 满足上述装置的要素之间的关系：＆lt; IMAGE＆gt;＆lt; IMAGE＆gt;其中f是准直透镜的焦距; s是准直透镜的镜侧上的焦点与孔径光阑之间的距离; t是相对于其他发光部分距离光轴最远的一个发光部分之间的距离; D是孔径光阑的直径，d是由准直透镜准直的每个激光束的直径。