Diffractive lenses for vision correction
    1.
    发明申请
    Diffractive lenses for vision correction 失效
    用于视力矫正的衍射镜

    公开(公告)号:US20060055883A1

    公开(公告)日:2006-03-16

    申请号:US11180818

    申请日:2005-07-13

    IPC分类号: G02C7/06

    摘要: Diffractive lenses for vision correction are provided on a lens body having a first diffractive structure for splitting light into two or more diffractive orders to different focal distances or ranges, and a second diffractive structure, referred to as a multiorder diffractive (MOD) structure, for diffracting light at different wavelengths into a plurality of different diffractive orders to a common focal distance or range. In a bifocal application, the first and second diffractive structures in combination define the base power for distance vision correction and add power for near vision correction of the lens. The first and second diffractive structures may be combined on the same surface or located on different surfaces of the lens. The first diffractive structure may have blazed (i.e., sawtooth), sinusoidal, sinusoidal harmonic, square wave, or other shape profile. A sinusoidal harmonic diffractive structure is particularly useful in applications where smooth rather than sharp edges are desirable.

    摘要翻译: 用于视觉矫正的衍射透镜设置在具有用于将光分成两个或更多个衍射级到不同焦距或范围的第一衍射结构的透镜体以及被称为多阶衍射(MOD)结构的第二衍射结构,用于 将不同波长的光衍射成多个不同的衍射级到公共焦距或范围。 在双焦应用中,组合的第一和第二衍射结构限定了距离视力校正的基本功率,并为镜头的近视矫正增加了功率。 第一和第二衍射结构可以组合在相同的表面上或者位于透镜的不同表面上。 第一衍射结构可以具有闪耀(即锯齿波),正弦曲线,正弦谐波,方波或其他形状轮廓。 正弦谐波衍射结构在需要平滑而不是锋利边缘的应用中特别有用。

    Bifocal multiorder diffractive lenses for vision correction

    公开(公告)号:US20050264757A1

    公开(公告)日:2005-12-01

    申请号:US11194944

    申请日:2005-08-02

    IPC分类号: G02C7/04 G02C7/06

    摘要: A bifocal multiorder diffractive lens is provided having a lens body with one or more first regions having a first multiorder diffractive structure providing near vision correction, and one or more second regions having a second multiorder diffractive structure providing distance vision correction, in which the lens defines an aperture divided between the first and second regions. Such one or more first regions may represent one or more annular rings, or other portion of the lens, and the second region may occupy the portion of the lens aperture outside the first region. The lens body may be provided by a single optical element or multiple optical elements. When multiple optical elements are used, the multiorder diffractive structures may be located along an interior surface of the lens. In other embodiments, a bifocal multiorder diffractive lens is provided by a single or multiple element lens body having a multiorder diffractive structure for distance vision correction and one or more refractive regions to add power for near vision correction, or a single or multiple element lens body shaped for refractive power for distance vision correction and a multiorder diffractive structure for add power for near vision correction. The lens may represent a contact lens, a spectacle lens, or the optic portion of an intraocular implant (IOL). Multiorder diffractive structures may be optimized for performance for photopic and scotopic vision.

    DIFFRACTIVE LENSES FOR VISION CORRECTION
    3.
    发明申请
    DIFFRACTIVE LENSES FOR VISION CORRECTION 失效
    用于视觉校正的透镜

    公开(公告)号:US20060050234A1

    公开(公告)日:2006-03-09

    申请号:US10922600

    申请日:2004-08-20

    IPC分类号: G02C7/06 G02C7/04 A61F2/16

    摘要: Diffractive lenses for vision correction are provided on a lens body having a first diffractive structure for splitting light into two or more diffractive orders to different focal distances or ranges, and a second diffractive structure, referred to as a multiorder diffractive (MOD) structure, for diffracting light at different wavelengths into a plurality of different diffractive orders to a common focal distance or range. In a bifocal application, the first and second diffractive structures in combination define the base power for distance vision correction and add power for near vision correction of the lens. The first and second diffractive structures may be combined on the same surface or located on different surfaces of the lens. An optical element, such as a substrate or coating, may be integrated along one or both surfaces of the lens to provide the lens with smooth outer surface(s).

    摘要翻译: 用于视觉矫正的衍射透镜设置在具有用于将光分成两个或更多个衍射级到不同焦距或范围的第一衍射结构的透镜体以及被称为多阶衍射(MOD)结构的第二衍射结构,用于 将不同波长的光衍射成多个不同的衍射级到公共焦距或范围。 在双焦应用中,组合的第一和第二衍射结构限定了距离视力校正的基本功率,并为镜头的近视矫正增加了功率。 第一和第二衍射结构可以组合在相同的表面上或者位于透镜的不同表面上。 诸如基底或涂层的光学元件可以沿透镜的一个或两个表面一体化,以使透镜具有光滑的外表面。

    Bifocal multiorder diffractive lenses for vision correction
    4.
    发明申请
    Bifocal multiorder diffractive lenses for vision correction 失效
    双焦衍生透镜用于视力矫正

    公开(公告)号:US20050057720A1

    公开(公告)日:2005-03-17

    申请号:US10973041

    申请日:2004-10-25

    IPC分类号: G02C7/04 G02C7/06 G02C7/02

    摘要: A bifocal multiorder diffractive lens is provided having a lens body with one or more first regions having a first multiorder diffractive structure providing near vision correction, and one or more second regions having a second multiorder diffractive structure providing distance vision correction, in which the lens defines an aperture divided between the first and second regions. Such one or more first regions may represent one or more annular rings, or other portion of the lens, and the second region may occupy the portion of the lens aperture outside the first region. The lens body may be provided by a single optical element or multiple optical elements. When multiple optical elements are used, the multiorder diffractive structures may be located along an interior surface of the lens. In other embodiments, a bifocal multiorder diffractive lens is provided by a single or multiple element lens body having a multiorder diffractive structure for distance vision correction and one or more refractive regions to add power for near vision correction, or a single or multiple element lens body shaped for refractive power for distance vision correction and a multiorder diffractive structure for add power for near vision correction. The lens may represent a contact lens, a spectacle lens, or the optic portion of an intraocular implant (IOL). Multiorder diffractive structures may be optimized for performance for photopic and scotopic vision.

    摘要翻译: 提供了一种双焦衍射透镜,其具有具有一个或多个第一区域的透镜体,所述第一区域具有提供近视校正的第一多阶衍射结构,以及具有提供距离视力校正的第二多阶衍射结构的一个或多个第二区域,其中透镜定义 在第一和第二区域之间划分的孔。 这样的一个或多个第一区域可以表示一个或多个环形环或透镜的其他部分,并且第二区域可以占据第一区域外部的透镜孔的部分。 透镜体可以由单个光学元件或多个光学元件提供。 当使用多个光学元件时,多阶衍射结构可以沿着透镜的内表面定位。 在其它实施例中,双焦衍射透镜由具有用于距离视觉校正的多级衍射结构的单个或多个元件透镜体提供,并且一个或多个折射区域用于为近视校正添加功率,或单个或多个元件透镜体 用于距离视力校正的屈光力形状,以及用于近视矫正的附加功率的多阶衍射结构。 透镜可以表示隐形眼镜,眼镜镜片或眼内植入物(IOL)的光学部分。 多镜衍射结构可以针对明视觉和暗视觉的性能进行优化。

    Multiport wavelength-selective optical switch
    6.
    发明授权
    Multiport wavelength-selective optical switch 有权
    多端口波长选择光开关

    公开(公告)号:US07162115B2

    公开(公告)日:2007-01-09

    申请号:US10858139

    申请日:2004-06-01

    IPC分类号: G02B6/26

    摘要: An multiport, multi-wavelength optical switch having and array of angular beam-directing devices employs an anamorphic optical system that transforms a beam corresponding to a given wavelength of a given multi-wavelength input channel into a beam, at a plane of the angular beam-directing device array, having an elliptical Gaussian-beam waist in the angular-directing direction of the beam-directing device and in the orthogonal direction, with the waist in the angular-direction being larger than the waist in the orthogonal direction. Planar and non-planar emitter/receivers for use with the switch are disclosed.

    摘要翻译: 具有角波束定向装置和阵列的多端口多波长光开关采用变形光学系统,其将对应于给定多波长输入通道的给定波长的波束变换成波束,在角波束的平面处 定向装置阵列,其具有在导光装置的角度方向上的正交方向上的椭圆形高斯光束腰部,并且在正交方向上腰部在正交方向上大于腰部。 公开了与开关一起使用的平面和非平面发射器/接收器。

    Hybrid refractive/diffractive achromatic lens for optical data storage
systems
    7.
    发明授权
    Hybrid refractive/diffractive achromatic lens for optical data storage systems 失效
    用于光学数据存储系统的混合折射/衍射消色差透镜

    公开(公告)号:US5349471A

    公开(公告)日:1994-09-20

    申请号:US17712

    申请日:1993-02-16

    摘要: A diffractive/refractive hybrid lens for use in an optical data storage system as an objective is provided by a convex-plano singlet having a refractive element defined by plano-convex surfaces and a diffractive element defined by a Fresnel zone-like pattern on the plano surface which together provide the total power of the lens. The refractive lens is made of a high index, high dispersion glass so that the curvature and thickness of the refractive lens is minimized while providing a large numerical aperture (at least 0.45) at the expense of increased longitudinal chromatic aberration, which are compensated by the diffractive element and without the need for one or more additional curved surfaces as in low index biaspheric glass objective lenses for chromatic and mono-chromatic aberration reduction, which increases the thickness and curvatures of the lens. The invention enables longitudinal chromatic aberration to be corrected for at least a 10 nm band width around a center wavelength over a 20 nm range, as results when different lasers are used and as laser power varies during optical data storage on an optical data storage device (an optical disk). The thin, light weight low curvature achromat has maximum tolerance for various possible manufacturing errors such as decentering, variations in thickness of the lens, tilt and focal length especially for on-axis field of view less than 2.degree. while providing a very high quality spot (Strehl ratio of at least 0.9.).

    摘要翻译: 用作光学数据存储系统作为目的的衍射/折射混合透镜由具有由平凸表面限定的折射元件和由平面上的菲涅耳带状图案限定的衍射元件的凸平面单重晶片提供 一起提供透镜的总功率的表面。 折射透镜由高折射率高分散玻璃制成,使得折射透镜的曲率和厚度最小化,同时以增加的纵向色差为代价提供大的数值孔径(至少为0.45),其由 并且不需要一个或多个附加的弯曲表面,如在用于彩色和单色像差降低的低折射率偏置玻璃物镜中,这增加了透镜的厚度和曲率。 本发明使得能够在20nm范围内围绕中心波长的至少10nm带宽校正纵向色差,这是因为当使用不同的激光器并且在​​光学数据存储装置中的光学数据存储期间激光功率变化时的结果 光盘)。 薄的,重量轻的低曲率消色差对于各种可能的制造误差具有最大公差,例如偏心,透镜厚度变化,倾斜和焦距,特别是对于小于2°的轴上视场,同时提供非常高的质量点 (Strehl比至少为0.9)。