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    • 4. 发明授权
    • Space-variant subwavelength dielectric grating and applications thereof
    • 空间变化的亚波长介质光栅及其应用
    • US07190521B2
    • 2007-03-13
    • US10484772
    • 2002-09-13
    • Erez HasmanZeev BomzonVladimir Kleiner
    • Erez HasmanZeev BomzonVladimir Kleiner
    • G02B5/18
    • G02B5/1809
    • An optical device includes a planar subwavelength grating (10) formed in a dielectric material and having a laterally varying, continuous grating vector. When used to modulate a beam of laterally uniform polarized electromagnetic radiation incident thereon, the device passes the incident beam with a predetermined, laterally varying transmissivity and/or retardation. When used to effect polarization state transformation, the device transforms a beam of electromagnetic radiation incident thereon into a transmitted beam having a predetermined, laterally varying polarization state. The device (214) can be used to provide radially polarized electromagnetic radiation for accelerating subatomic particles or for cutting a workpiece. The device (108) also can be used, in conjuction with a mechanism for measuring the lateral variation of the intensity of the transmitted beam, for measuring all four Stokes parameters that define the polarization state of the incident beam.
    • 光学器件包括形成在电介质材料中并具有横向变化的连续光栅矢量的平面亚波长光栅(10)。 当用于调制入射在其上的横向均匀极化的电磁辐射束时,该装置以预定的横向变化的透射率和/或延迟使入射光束通过。 当用于实现偏振态变换时,该装置将入射到其上的电磁辐射束变换成具有预定的横向变化的偏振状态的透射光束。 器件(214)可用于提供用于加速亚原子粒子或切割工件的径向极化电磁辐射。 该装置(108)还可以与用于测量透射光束的强度的横向变化的机构一起使用,用于测量限定入射光束的偏振状态的所有四个斯托克斯参数。
    • 5. 发明授权
    • Method and apparatus for color-coded optical profilometer
    • 彩色光学轮廓仪的方法和装置
    • US5880846A
    • 1999-03-09
    • US918587
    • 1997-08-19
    • Erez HasmanAsher A. FriesemNir Davidson
    • Erez HasmanAsher A. FriesemNir Davidson
    • G01B11/25G01B11/24
    • G01B11/2509G01B2210/50
    • A triangulation optical system and method for determining at least one coordinate of a surface of an object, along at least one coordinate axis which is substantially transverse to the surface. The method includes the steps of providing incident light of a substantially wide wavelength bandwidth propagating along the axis. Passing the light through an axially dispersing optics so that the light of different wavelengths is focussed at different locations relative to the axis. The different locations defining a multi-colored measuring area and a distance between extreme locations along the axis defining a depth of measuring range. Further, off-axis imaging of the measuring area, detecting intensity of the image and determining the coordinate of the intersection of the surface with the measuring area.
    • 一种三角测量光学系统和方法,用于沿着基本上横向于表面的至少一个坐标轴确定物体的表面的至少一个坐标。 该方法包括提供沿着轴传播的基本上宽的波长带宽的入射光的步骤。 使光通过轴向分散光学元件,使得不同波长的光聚焦在相对于轴的不同位置处。 定义多色测量区域的不同位置以及沿轴线的极限位置之间的距离限定了测量范围的深度。 此外,测量区域的离轴成像,检测图像的强度并确定表面与测量区域的交点的坐标。
    • 8. 发明授权
    • Space-variant subwavelength polarization grating and applications thereof
    • 空间变化的亚波长偏振光栅及其应用
    • US06972906B2
    • 2005-12-06
    • US10017932
    • 2001-12-18
    • Erez HasmanZeev BomzonVladimir Kleiner
    • Erez HasmanZeev BomzonVladimir Kleiner
    • B23K26/06G02B5/18G02B5/30G21K1/16
    • G21K1/16B23K26/064B23K26/0643B23K26/0648B23K26/0665G02B5/1809G02B5/1866G02B5/3058
    • An optical device includes a plurality of metallic stripes, arranged in a substantially planar, subwavelength grating having a laterally varying, continuous grating vector, deposited on a substrate such as GaAs or ZnSe. When used as a polarizer, the device passes a laterally uniform polarized beam of electromagnetic radiation incident thereon with a predetermined, laterally varying transmissivity. When used to effect polarization state transformation, the device transforms a beam of electromagnetic radiation incident thereon into a transmitted beam having a predetermined, laterally varying polarization state. The device can be used to provide radially polarized electromagnetic radiation for accelerating subatomic particles or for cutting a workpiece. The device also can be used, in conjunction with a mechanism for measuring the lateral variation of the intensity of the transmitted beam, for measuring the polarization state of the incident beam.
    • 光学装置包括多个金属条,布置在具有横向变化的连续光栅矢量的基本上平面的亚波长光栅中,沉积在诸如GaAs或ZnSe的衬底上。 当用作偏振器时,器件以预定的横向变化的透射率通过入射在其上的横向均匀的电磁辐射的偏振光束。 当用于实现偏振态变换时,该装置将入射到其上的电磁辐射束变换成具有预定的横向变化的偏振状态的透射光束。 该装置可用于提供用于加速亚原子粒子或切割工件的径向极化电磁辐射。 该装置还可以与用于测量透射光束的强度的横向变化的机构结合使用,以测量入射光束的偏振状态。
    • 9. 发明授权
    • Multilevel diffractive optical element
    • 多级衍射光学元件
    • US06369948B2
    • 2002-04-09
    • US09801808
    • 2001-03-09
    • Yochay DanzigerErez HasmanAsher Friesem
    • Yochay DanzigerErez HasmanAsher Friesem
    • G02B518
    • G02B5/1876
    • A multilevel diffractive optical element comprising a base and a plurality of phase zones having phase levels of a substantially identical height h, each phase zone being defined by a local modulation depth d and a local number of phase levels &xgr;=d/h, the local number of phase levels &xgr; per phase zone being a real number, an integer of which defines the number of complete levels in the phase zone, which complete levels have identical widths, and a fraction of which, in at least one phase zone, defines an incomplete level which is narrower than the complete levels, said local number of phase levels &xgr;=&xgr;(x, y) varying among different phase zones so as to provide corresponding variation of said local modulation depth d=d(x, y) whereby local diffraction efficiencies and consequently an overall diffraction efficiency of the optical element is arbitrarily controlled.
    • 一种多级衍射光学元件,包括基极和具有基本相同高度h的相位电平的多个相位区域,每个相位区域由局部调制深度d和本地相位级数xgr = d / h定义, 本地相位级数xgr 每个相位区域是实数,其整数定义了相位区域中的完整水平的数量,其完整水平具有相同的宽度,并且其一部分在至少一个相位区域中限定较窄的不完整水平 表示本地数量的相位水平&xgr; =&xgr(x,y)在不同相位区域之间变化,以便提供所述局部调制深度d = d(x,y)的相应变化,由此局部衍射效率和 因此光学元件的总体衍射效率是任意控制的。