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    BEAM MULTIPLEXER FOR WRITING REFRACTIVE INDEX CHANGES IN OPTICAL MATERIALS
    1.
    发明申请
    BEAM MULTIPLEXER FOR WRITING REFRACTIVE INDEX CHANGES IN OPTICAL MATERIALS 有权

    公开(公告)号：US20230038030A1

    公开(公告)日：2023-02-09

    申请号：US17968864

    申请日：2022-10-19

    申请人： University of Rochester

    发明人： Wayne H. Knox

    IPC分类号： A61F9/008

    摘要： A refractive index writing system includes a pulsed laser source, an objective lens for focusing an output of the pulsed laser source to a focal spot in an optical material, and a scanner for relatively moving the focal spot with respect to the optical material along a scan region. A beam multiplexer divides the output of the laser source into at least two working beams that are focused to variously shaped focal spots within the optical material. A controller controls at least one of a temporal and a spatial offset between the focal spots of the working beams together with the relative speed and direction of the scanner for maintaining an energy profile within the optical material along the scan region above a nonlinear absorption threshold of the optical material and below a breakdown threshold of the optical materials.

    Device, System and Method For The Detection and Screening of Plastic Microparticles
    2.
    发明申请
    Device, System and Method For The Detection and Screening of Plastic Microparticles 有权

    公开(公告)号：US20220228964A1

    公开(公告)日：2022-07-21

    申请号：US17579515

    申请日：2022-01-19

    申请人： University of Rochester

    发明人： Wayne H. Knox ,  Gregory Madejski ,  James Lionel McGrath

    IPC分类号： G01N15/06 ,  B01D71/02 ,  B01D61/20

    摘要： A device, system and method for the detection and screening of plastic microparticles in a sample is disclosed. A nanoporous silicon nitride membrane is used to entrap plastic microparticles contained in the sample. The sample may be a water sample, an air sample, or other liquid or gas sample. The entrapped plastic microparticles are then heated or otherwise processed on the nanoporous silicon nitride membrane. An imaging system observes the nanoporous silicon nitride membrane with tic entrapped plastic microparticles to determine the type and quantity of the various plastic microparticles that are entrapped on the membrane.

    SCALABLE MANUFACTURING WITH LASER INDUCED REFRACTIVE INDEX CHANGE
    3.
    发明申请
    SCALABLE MANUFACTURING WITH LASER INDUCED REFRACTIVE INDEX CHANGE 有权

    公开(公告)号：US20220001495A1

    公开(公告)日：2022-01-06

    申请号：US17293740

    申请日：2019-11-14

    申请人： University of Rochester

    发明人： Wayne H. Knox ,  Ruiting Huang

    IPC分类号： B23K26/53 ,  B23K26/0622 ,  B23K26/067 ,  G02B27/14 ,  G05B19/4099 ,  A61F2/16 ,  A61F2/14

    摘要： Methods of designing a laser writing system for modifying a plurality of ophthalmic devices, and systems designed in accordance with those methods. One example of such a method includes: (a) determining at least one material characteristic of the ophthalmic devices, determined over a range of laser writing system parameters; (b) determining at least one design characteristic of the ophthalmic device; and (c) using at least the determined material and design characteristics, configuring at least one system parameter of the laser writing system to optimize throughput of the laser writing system, the laser writing system including: (i) a laser configured to generate a laser beam, (ii) a splitter configured to split the laser beam into a plurality of outputs, and (iii) a plurality of writing heads, each writing head configured to direct at least one of the outputs to an ophthalmic device to write one or more localized refractive index modifications into the ophthalmic device.

    BEAM MULTIPLEXER FOR WRITING REFRACTIVE INDEX CHANGES IN OPTICAL MATERIALS
    5.
    发明申请
    BEAM MULTIPLEXER FOR WRITING REFRACTIVE INDEX CHANGES IN OPTICAL MATERIALS 审中-公开

    公开(公告)号：US20200054485A1

    公开(公告)日：2020-02-20

    申请号：US16499527

    申请日：2018-03-08

    申请人： University of Rochester

    发明人： Wayne H. Knox

    IPC分类号： A61F9/008

    摘要： A refractive index writing system includes a pulsed laser source, an objective lens for focusing an output of the pulsed laser source to a focal spot in an optical material, and a scanner for relatively moving the focal spot with respect to the optical material along a scan region. A beam multiplexer divides the output of the laser source into at least two working beams that are focused to variously shaped focal spots within the optical material. A controller controls at least one of a temporal and a spatial offset between the focal spots of the working beams together with the relative speed and direction of the scanner for maintaining an energy profile within the optical material along the scan region above a nonlinear absorption threshold of the optical material and below a breakdown threshold of the optical materials.

    Optical material and method for modifying the refractive index
    6.
    发明授权
    Optical material and method for modifying the refractive index 有权

    公开(公告)号：US10543076B2

    公开(公告)日：2020-01-28

    申请号：US13782257

    申请日：2013-03-01

    申请人： University of Rochester

    发明人： Wayne H. Knox ,  Li Ding ,  Jay F. Kunzler ,  Dharmendra M. Jani

    IPC分类号： A61F2/16 ,  A61F9/008 ,  G02C7/04

    摘要： A laser system for modifying the index of refraction of an optical hydrogel material. The laser system comprises a computer program to determine the position and shape of refractive structures to be written into the optical hydrogel material to correct a patient's vision, and a focused laser that generates laser light having a wavelength of from 400 nm to 900 nm, and which operates with an average power of 10 mW to 1000 mW to produce a pulse energy from 0.05 nJ to 1000 nJ with a peak intensity at focus of greater than 1013 W/cm2. The refractive structures exhibit a change in the index of refraction of 0.01 to 0.06 in the optical hydrogel material.

    METHOD FOR MODIFYING THE REFRACTIVE INDEX OF AN OPTICAL MATERIAL AND RESULTING OPTICAL VISION COMPONENT
    7.
    发明申请
    METHOD FOR MODIFYING THE REFRACTIVE INDEX OF AN OPTICAL MATERIAL AND RESULTING OPTICAL VISION COMPONENT 有权
    修改光学材料的折射率和光学视觉成分的方法

    公开(公告)号：US20150378065A1

    公开(公告)日：2015-12-31

    申请号：US14849058

    申请日：2015-09-09

    申请人： University of Rochester

    发明人： Wayne H. Knox ,  Dharmendra Jani ,  Li Ding

    IPC分类号： G02B3/00

    CPC分类号： G02B3/0087 ,  A61F2/1618 ,  A61F2/1627 ,  A61F9/00834 ,  A61L27/16 ,  A61L27/50 ,  A61L27/52 ,  A61L2400/18 ,  A61L2430/16 ,  G02B2003/0093 ,  G02C2202/12 ,  G02C2202/14 ,  C08L33/10

    摘要： A method for modifying the refractive index of an optical polymeric material. The method comprises continuously irradiating predetermined regions of an optical, polymeric material with femtosecond laser pulses to form a gradient index refractive structure within the material. The optical polymeric material can include a photosensitizer to increase the photoefficiency of the two-photo process resulting in the formation of the observed refractive structures. An optical device includes an optical, polymeric lens material having an anterior surface and posterior surface and an optical axis intersecting the surfaces and at least one laser-modified, GRIN layer disposed between the anterior surface and the posterior surface and arranged along a first axis 45° to 90° to the optical axis. The at least one laser-modified GRIN layer comprises a plurality of adjacent refractive segments characterized by a variation in index of refraction across at least one of at least a portion of the adjacent segments and along each segment.

    摘要翻译： 一种用于改变光学聚合物材料的折射率的方法。 该方法包括用飞秒激光脉冲连续照射光学聚合材料的预定区域，以在材料内形成梯度折射率折射结构。 光学聚合物材料可以包括光敏剂以增加双光过程的光效率，导致观察到的折射结构的形成。 光学装置包括具有前表面和后表面的光学聚合物透镜材料和与表面相交的光轴以及设置在前表面和后表面之间并且沿着第一轴线45布置的至少一个激光修饰的GRIN层 °至90°。 所述至少一个激光修饰的GRIN层包括多个相邻的折射片段，其特征在于相邻片段的至少一部分中的至少一个和沿着每个片段的折射率的变化。

    Optical Material and Method for Modifying the Refractive Index
    8.
    发明申请
    Optical Material and Method for Modifying the Refractive Index 审中-公开
    用于改变折射率的光学材料和方法

    公开(公告)号：US20130178934A1

    公开(公告)日：2013-07-11

    申请号：US13782257

    申请日：2013-03-01

    申请人： Bausch & Lomb Incorporated ,  University of Rochester

    发明人： Wayne H. Knox ,  Li Ding ,  Jay F. Kunzler ,  Dharmendra M. Jani

    IPC分类号： A61F2/16 ,  A61F9/008

    CPC分类号： A61F2/1624 ,  A61F2/16 ,  A61F2/1627 ,  A61F2/1635 ,  A61F9/008 ,  A61F9/00834 ,  A61F2009/00842 ,  A61F2009/00897 ,  G02C7/04 ,  G02C2202/14

    摘要： A laser system for modifying the index of refraction of an optical hydrogel material. The laser system comprises a computer program to determine the position and shape of refractive structures to be written into the optical hydrogel material to correct a patient's vision, and a focused laser that generates laser light having a wavelength of from 400 nm to 900 nm, and which operates with an average power of 10 mW to 1000 mW to produce a pulse energy from 0.05 nJ to 1000 nJ with a peak intensity at focus of greater than 1013 W/cm2. The refractive structures exhibit a change in the index of refraction of 0.01 to 0.06 in the optical hydrogel material.

    摘要翻译： 一种用于改变光学水凝胶材料的折射率的激光系统。 激光系统包括计算机程序，以确定要写入光学水凝胶材料的折射结构的位置和形状以校正患者的视力;以及聚焦激光，其产生波长为400nm至900nm的激光，以及 其以10mW至1000mW的平均功率工作，以产生从0.05nJ到1000nJ的脉冲能量，并且焦点处的峰值强度大于1013W / cm 2。 折射结构在光学水凝胶材料中表现出0.01至0.06的折射率变化。