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：US06801369B2

公开(公告)日：2004-10-05

申请号：US10140432

申请日：2002-05-08

申请人： Yutaka Kusuyama

发明人： Yutaka Kusuyama

IPC分类号： G02B1318

CPC分类号： C03B23/047 ,  C03B21/02 ,  G02B3/06

摘要： The method of manufacturing an optical lens in accordance with the present invention includes a drawing optical lens preform preparing step of preparing a drawing optical lens preform comprising a first curved face part, formed aspheric in one side face thereof, functioning as an optically active part, and a second curved face part, formed in a side face opposite from the first curved face part, having a curvature smaller than that of the first curved face part; a drawing step of drawing the drawing optical lens preform to a desirable outer diameter; and an optical lens preparing step of preparing an optical lens 1 by slicing the drawn drawing optical lens preform. Since the second curved face part is formed, distortions can be restrained from occurring due to the drawing in this manufacturing method.

摘要翻译： 根据本发明的制造光学透镜的方法包括：绘制光学透镜预制件的准备步骤，准备包括在其一个侧面中形成为非球面的第一弯曲面部分，其起到光学活性部分的作用， 以及第二弯曲面部，形成在与所述第一弯曲面部相反侧的侧面，其曲率比所述第一弯曲面部的曲率小。 将绘图光学透镜预成型件拉制成所需的外径的拉伸步骤; 以及光学透镜准备步骤，通过切割拉伸光学透镜预制件来制备光学透镜1。 由于形成了第二曲面部，所以可以通过制造方法的拉伸来抑制变形。

公开(公告)号：US06801368B2

公开(公告)日：2004-10-05

申请号：US10679058

申请日：2003-10-02

申请人： Hans J. Coufal ,  John A. Hoffnagle ,  Carl M. Jefferson

发明人： Hans J. Coufal ,  John A. Hoffnagle ,  Carl M. Jefferson

IPC分类号： G02B1318

CPC分类号： G02B19/0057 ,  G02B13/18 ,  G02B19/0014 ,  G02B27/09 ,  G02B27/0927 ,  G02B27/0944 ,  G02B27/0955 ,  G03F7/70075

摘要： An optical beam transformation system includes a first and a second optical element, each of which has a non-reentrant surface. The system transforms a substantially non-uniform optical input beam (such as a Gaussian) to a substantially uniform output beam. The first and second optical elements are arranged in either a Keplerian or Galilean configuration. The aspheric surface of the second optical element is related to the aspheric surface of the first optical element by a ray-tracing function that maps substantially all of an input light beam that is incident on the first optical element to a collimated output light beam that is output from the second optical element. Preferably, the output light beam has a Fermi-Dirac intensity distribution, and the ray-tracing function maps the input light beam to the output beam out to the (1/e)6 intensity radius of the input light beam.

摘要翻译： 光束转换系统包括第一和第二光学元件，每个光学元件具有非凹入表面。 系统将基本上不均匀的光输入光束（例如高斯）转换成基本均匀的输出光束。 第一和第二光学元件以开普勒或伽利略配置布置。 第二光学元件的非球面通过光线跟踪功能与第一光学元件的非球面相关，该光线跟踪功能将入射在第一光学元件上的输入光束基本上全部映射到准直的输出光束 从第二光学元件输出。 优选地，输出光束具有费米 - 迪拉克强度分布，并且光线跟踪功能将输入光束映射到输入光束的输出光束的（1 / e）6强度半径。

公开(公告)号：US06744567B2

公开(公告)日：2004-06-01

申请号：US10092677

申请日：2002-03-05

申请人： Young-Sik Kim

发明人： Young-Sik Kim

IPC分类号： G02B1318

CPC分类号： G11B7/1353 ,  G11B7/1374 ,  G11B2007/13725

摘要： A lens for an optical recording and reproducing system includes: a plane of incidence on which a light generated from a light source is made incident; a first reflection side for reflecting a light passing through a plane of incidence; and a second reflection side for reflecting again the light that has been reflected on the first reflection side, the second reflection side being coated with a reflection material and being formed to be parabolic. The lens for an optical recording and reproducing system is very small in its size and weight, compared to the conventional lens for an optical recording system. In addition, the lens has a large numerical aperture and a less light loss by using one focussing lens without an objective lens, so that an information recording and reproducing efficiency can be heightened. Moreover, the height of the lens and the overall system where the lens is mounted can be remarkably reduced, so that the present invention provides an ultra-thin optical recording system that can be employed for a mobile instrument.

摘要翻译： 用于光学记录和再现系统的透镜包括：入射从光源产生的光的入射平面; 用于反射通过入射平面的光的第一反射面; 以及第二反射侧，用于再次反射已经在第一反射侧被反射的光，第二反射面涂覆有反射材料并且被形成为抛物线。 与用于光学记录系统的常规透镜相比，用于光学记录和再现系统的透镜的尺寸和重量非常小。 此外，通过使用没有物镜的一个聚焦透镜，透镜具有大的数值孔径和较少的光损失，使得可以提高信息记录和再现效率。 此外，透镜的安装高度和透镜的整体系统的高度可以大大降低，从而本发明提供了可用于移动式仪器的超薄型光学记录系统。

公开(公告)号：US06646817B2

公开(公告)日：2003-11-11

申请号：US09864236

申请日：2001-05-25

申请人： Toshiaki Katsuma

发明人： Toshiaki Katsuma

IPC分类号： G02B1318

CPC分类号： G11B7/1392 ,  G11B7/1374 ,  G11B2007/0006 ,  G11B2007/13727

摘要： An objective lens for converging two wavelengths of light to their predetermined positions is constituted by two or three lenses. Respective materials for forming adjacent lenses are chosen such that the respective refractive indices of adjacent lenses substantially equal each other with respect to only one of the two wavelengths of light, whereas the form of each lens surface is configured so as to suppress aberration in the objective lens as a whole.

公开(公告)号：US06633439B1

公开(公告)日：2003-10-14

申请号：US09714007

申请日：2000-11-16

申请人： Baoxi Xu ,  Minyu Liu ,  Tow Chong Chong ,  Gaoqiang Yuan

发明人： Baoxi Xu ,  Minyu Liu ,  Tow Chong Chong ,  Gaoqiang Yuan

IPC分类号： G02B1318

CPC分类号： G11B7/1374 ,  G11B7/122 ,  G11B7/1387 ,  G11B11/10532 ,  G11B11/10554 ,  G11B11/1058 ,  G11B2007/13727

摘要： The present invention provides an improved optical reading and recording system utilizing optical system employing an aspherical solid immersion lens (SIL). The improved optical system has an aspherical SIL between an objective lens and the recording media. The aspherical SIL reduces the focused electromagnetic radiation beam spot size by providing an increased numeric aperture (NA) of the optical system. The aspherical surface of the SIL provide greater manufacturing and operating tolerances between the objective lens and the aspherical SIL. Greater manufacturing tolerances provide an easier to manufacture optical system. Increased ease of manufacture reduces the cost of optical systems.

摘要翻译： 本发明提供了利用采用非球面固体浸没透镜（SIL）的光学系统的改进的光学读取和记录系统。 改进的光学系统在物镜和记录介质之间具有非球面SIL。 非球面SIL通过提供光学系统的增加的数值孔径（NA）来减少聚焦的电磁辐射束斑点尺寸。 SIL的非球面表面在物镜和非球面SIL之间提供更大的制造和工作公差。 更大的制造公差提供了更容易制造的光学系统。 增加制造的便利性降低光学系统的成本。

公开(公告)号：US06507443B2

公开(公告)日：2003-01-14

申请号：US09725568

申请日：2000-11-30

申请人： Toshitake Kitagawa

发明人： Toshitake Kitagawa

IPC分类号： G02B1318

CPC分类号： G02B13/0025 ,  G02B3/02 ,  G02B13/18

摘要： A lens comprises a single lens, both surfaces of the lens is a meniscus-shaped and aspheric lens, and side surface side thereof is a convex surface, and, when a refractive index of the lens is represented by n, a central thickness thereof is represented by t, a radius of curvature of a concave face thereof is represented by r1, the radius of curvature of the convex face thereof is represented by r2, and a focal length thereof is represented by f, the lens satisfies the following equations: - 0.2

摘要翻译： 透镜包括单个透镜，透镜的两个表面是弯月形非球面透镜，其侧表面侧是凸面，并且当透镜的折射率由n表示时，其中心厚度为 由t表示，其凹面的曲率半径由r1表示，其凸面的曲率半径由r2表示，其焦距由f表示，透镜满足以下等式：

公开(公告)号：US06239921B1

公开(公告)日：2001-05-29

申请号：US09457747

申请日：1999-12-10

申请人： Masashi Isono

发明人： Masashi Isono

IPC分类号： G02B1318

CPC分类号： G02B9/10 ,  G02B13/04

摘要： A taking lens system has, from the object side, a front lens unit, an aperture stop, and a rear lens unit. The front lens unit is composed of two lens elements that are, from the object side, a positive glass element and a negative plastic lens element. The rear lens unit has a positive plastic lens element disposed at the image-side end thereof. On the object side of this positive plastic lens element is disposed solely a lens element made of glass. The following condition is fulfilled: |f×fa/Ha2+f×fb/Hb2|≦300 where f represents the focal length of the entire taking lens system; fa represents the focal length of the negative plastic lens element of the front lens unit; fb represents the focal length of the positive plastic lens element of the rear lens unit; Ha represents the height of incidence at which an axial F-number ray enters the negative plastic lens element of the front lens unit; and Hb represents the height of incidence at which an axial F-number ray enters the positive plastic lens element of the rear lens unit.

摘要翻译： 摄像透镜系统从物体侧具有前透镜单元，孔径光阑和后透镜单元。 前透镜单元由从物体侧起的正玻璃元件和负塑料透镜元件的两个透镜元件组成。 后透镜单元具有设置在其图像侧端部的正塑料透镜元件。 在该正塑料透镜元件的物体侧仅设置由玻璃制成的透镜元件。 满足以下条件：其中f表示整个拍摄镜头系统的焦距; fa表示前透镜单元的负塑料透镜元件的焦距; fb表示后透镜单元的正塑料透镜元件的焦距; Ha表示轴向F数射线进入前透镜单元的负塑料透镜元件的入射高度; Hb表示轴向F数射线进入后透镜单元的正塑料透镜元件的入射高度。

公开(公告)号：US06836377B1

公开(公告)日：2004-12-28

申请号：US10009837

申请日：2002-08-22

申请人： Hanoch Kislev ,  Arkady Glukhovsky ,  Gavriel Meron ,  Gavriel J. Iddan

发明人： Hanoch Kislev ,  Arkady Glukhovsky ,  Gavriel Meron ,  Gavriel J. Iddan

IPC分类号： G02B1318

CPC分类号： A61B1/041 ,  A61B1/00096 ,  A61B1/051 ,  A61B1/0661 ,  A61B1/31 ,  G02B17/00 ,  G02B23/2407 ,  G02B27/0018 ,  H04N7/18

摘要： An optical system for illuminating and viewing a target (15) in which an illumination element (16) and a receiving element (13) are disposed behind a single optical window (14), and which obtains data essentially free of backscatter and stray light. The optical window (14) is configure such that is defines a shape having at least one focal curve, i.e., an ellipsoid shape dome. The illumination element (16) and the receiving element (13) are geometrically positioned on the focal curve plane or in proximity of the focal curve plane, such that, when illuminating, rays from the illumination element internally reflected from the optical window (14) will not incident on the receiving element (13).

摘要翻译： 一种用于照明和观看目标（15）的光学系统，其中照明元件（16）和接收元件（13）设置在单个光学窗口（14）的后面，并且获得基本上没有反向散射和杂散光的数据。 光学窗口（14）被构造成使得具有至少一个焦点曲线的形状即椭球形圆顶。 照明元件（16）和接收元件（13）几何地位于焦平面或焦平面附近，使得当照明时，来自光学窗（14）内部反射的来自照明元件的光线 不会发生在接收元件（13）上。

公开(公告)号：US06791764B2

公开(公告)日：2004-09-14

申请号：US10386439

申请日：2003-03-13

申请人： Shigeru Hosoe

发明人： Shigeru Hosoe

IPC分类号： G02B1318

CPC分类号： G02B5/1895 ,  G02B5/1852 ,  G02B5/1876 ,  Y10T83/9319 ,  Y10T407/23

摘要： An optical element has diffractive grooves. Each diffractive groove includes a first surface approximated by a predetermined optical function; a second surface extending in a direction to cross the first surface and being parallel to the optical axis; and a third surface to connect the first surface and the second surface. A width of the third surface in the direction perpendicular to the optical axis is 0.5% to 15% of the sum of a width of the first surface in the direction perpendicular to the optical axis and the width of the third surface in the direction perpendicular to the optical axis.