公开(公告)号：US20210053858A1

公开(公告)日：2021-02-25

申请号：US16977975

申请日：2019-03-05

Applicant: CORNING INCORPORATED

Inventor： Anatoli Anatolyevich Abramov ,  Anping Liu ,  Michael Yoshiya Nishimoto ,  William Anthony Whedon ,  Jae Hyun Yu

IPC: C03B17/06 ,  G02B27/09 ,  G02B26/02

Abstract: A control apparatus for controlling a thickness of a substrate, such as a glass ribbon. The control apparatus comprises a laser assembly and a shielding assembly. The laser assembly generates an elongated laser beam traveling in a propagation direction along an optical path. The shielding assembly comprises at least one shield selectively disposed in the optical path. The shield is configured to decrease an optical intensity of a region of the elongated laser beam. The shielding assembly is configured to change an intensity profile of the elongated laser beam from an initial intensity profile to a targeted intensity profile. A desired targeted intensity profile can be dictated by an arrangement of the shield(s) relative to the optical path, and can be selected to affect a temperature change at portions of the substrate determined to benefit from a reduction in thickness.

公开(公告)号：US10144668B2

公开(公告)日：2018-12-04

申请号：US15504947

申请日：2015-08-13

Applicant: CORNING INCORPORATED

Inventor： Andrew Stephen Altman ,  Todd Benson Fleming ,  Anping Liu ,  James Joseph Watkins

IPC: C03B33/04 ,  C03B33/09

Abstract: Methods and apparatus for cutting a glass sheet along a cutting line into a desired shape. A laser source is configured to apply a laser beam to a beam location on the cutting line of the glass sheet. A source of cooling fluid is configured to apply a cooling fluid to a cooling band on the glass sheet to reduce a temperature of the glass sheet along the cooling path while elevating the temperature of the glass sheet at the beam location with the laser beam. The source of cooling fluid is configured to apply the cooling path as a cooling ring to circumscribe the beam location on the cutting line with the cooling band circumferentially spaced from the beam location while the cooling path and the beam location move simultaneously together in order to propagate a fracture in the glass sheet along the cutting line.

公开(公告)号：US20170240456A1

公开(公告)日：2017-08-24

申请号：US15432404

申请日：2017-02-14

Applicant: Corning Incorporated

Inventor： Ravindra Kumar Akarapu ,  Ming-Jun Li ,  Anping Liu ,  Barada Kanta Nayak ,  Bruce Warren Reding

IPC: C03B37/12 ,  C03B37/025 ,  G02B6/02

CPC classification number: C03B37/12 ,  C03B37/025 ,  C03B37/02727 ,  C03B2205/20 ,  C03B2205/42 ,  G02B5/10 ,  G02B6/02 ,  Y02P40/57

Abstract: A method and corresponding apparatus for processing optical fiber include directing light from a directed light source toward an optical fiber on a fiber draw. A fiber core of the optical fiber is heated, using at least the light from the directed light source, to a fiber core temperature within a glass transformation temperature range of the fiber core. The method can be used to reduce fictive temperature of the fiber core, with Rayleigh scattering being reduced, leading to lower attenuation losses in the fiber core.

公开(公告)号：US12151962B2

公开(公告)日：2024-11-26

申请号：US16977975

申请日：2019-03-05

Applicant: CORNING INCORPORATED

Inventor： Anatoli Anatolyevich Abramov ,  Anping Liu ,  Michael Yoshiya Nishimoto ,  William Anthony Whedon ,  Jae Hyun Yu

IPC: C03B17/06 ,  G02B26/02 ,  G02B27/09

Abstract: A control apparatus for controlling a thickness of a substrate, such as a glass ribbon. The control apparatus comprises a laser assembly and a shielding assembly. The laser assembly generates an elongated laser beam traveling in a propagation direction along an optical path. The shielding assembly comprises at least one shield selectively disposed in the optical path. The shield is configured to decrease an optical intensity of a region of the elongated laser beam. The shielding assembly is configured to change an intensity profile of the elongated laser beam from an initial intensity profile to a targeted intensity profile. A desired targeted intensity profile can be dictated by an arrangement of the shield(s) relative to the optical path, and can be selected to affect a temperature change at portions of the substrate determined to benefit from a reduction in thickness.

公开(公告)号：US20220080531A1

公开(公告)日：2022-03-17

申请号：US17403998

申请日：2021-08-17

Applicant: CORNING INCORPORATED

Inventor： Anping Liu ,  Craig John Mancusi Ungaro

IPC: B23K26/53 ,  B23K26/18 ,  B23K26/0622 ,  B23K26/06 ,  B23K26/073

Abstract: A method includes directing a laser beam onto a phase-adjustment device such that the laser beam downstream the phase-adjustment device is a modified Airy beam having a modified Airy beam focal region having a main lobe and a plurality of side lobes. The main lobe has a lobe aspect ratio of 1.2 or greater.

公开(公告)号：US10688599B2

公开(公告)日：2020-06-23

申请号：US15874004

申请日：2018-01-18

Applicant: Corning Incorporated

Inventor： Anping Liu ,  Matthew Ryan Ross

IPC: B23K26/53 ,  B23K26/364 ,  B23K26/0622 ,  B23K26/067 ,  B23K26/073 ,  C03B9/12 ,  C03C14/00 ,  C03B33/02 ,  C03C3/093 ,  B23K26/06 ,  B23K26/064 ,  B23K103/00

Abstract: A method for laser processing a transparent workpiece includes forming a contour line having defects in the transparent workpiece, which includes directing a pulsed laser beam oriented along a beam pathway through a beam converting element and through a phase modifying optical element such that the portion of the pulsed laser beam directed into the transparent workpiece includes a phase shifted focal line having a cross-sectional phase contour that includes phase contour ridges induced by the phase modifying optical element and extending along phase ridge lines. Moreover, the phase shifted focal line generates an induced absorption within the transparent workpiece to produce a defect within the transparent workpiece including a central defect region and a radial arm that extends outward from the central defect region in a radial defect direction oriented within 20° of the phase ridge lines of the phase shifted focal line.

公开(公告)号：US10345604B2

公开(公告)日：2019-07-09

申请号：US15874363

申请日：2018-01-18

Applicant: Corning Incorporated

Inventor： Ming-Jun Li ,  Anping Liu

IPC: G02B6/14 ,  G02B27/09 ,  G02B6/036

Abstract: An optical fiber for converting a Gaussian laser beam into a Bessel laser beam may include a first segment optically coupled to a second segment with a transition region, the first segment having a first outer diameter greater than a second outer diameter of the second segment. The first segment may include a first core portion with a first cladding portion extending around the first core portion. The first core portion may have an annular core region with a relative refractive index relative to the first cladding portion. The second segment may include a second core portion with a second cladding portion extending around the second core portion. The second core portion has a relative refractive index relative to the second cladding portion and the relative refractive index of the first annular core region may be substantially equal to the relative refractive index of the second core portion.

公开(公告)号：US20190129093A1

公开(公告)日：2019-05-02

申请号：US16169263

申请日：2018-10-24

Applicant: Corning Incorporated

Inventor： Ming-Jun Li ,  Anping Liu

IPC: G02B6/02 ,  G02B6/036 ,  G02B6/26 ,  G02B27/09 ,  H01S5/022

CPC classification number: G02B6/02076 ,  B23K26/0736 ,  B23K26/53 ,  G02B6/02338 ,  G02B6/036 ,  G02B6/03611 ,  G02B6/0365 ,  G02B6/03688 ,  G02B6/14 ,  G02B6/255 ,  G02B6/262 ,  G02B6/32 ,  G02B27/0927 ,  G02B27/0955 ,  G02B27/0994 ,  H01S5/02284

Abstract: An optical fiber for converting a Gaussian laser beam into a Bessel laser beam may include a first segment optically coupled to a second segment with a transition region, the first segment having a first outer diameter greater than a second outer diameter of the second segment. The first segment may include a first core portion with a first cladding portion extending around the first core portion. The second segment may include a second core portion with a second cladding portion extending around the second core portion. The optical fiber may have a non-axisymmetric refractive index profile or may be coupled to an end cap with a non-axisymmetric refractive index profile.

公开(公告)号：US20180221988A1

公开(公告)日：2018-08-09

申请号：US15874004

申请日：2018-01-18

Applicant: Corning Incorporated

Inventor： Anping Liu ,  Matthew Ryan Ross

IPC: B23K26/00 ,  B23K26/364 ,  B23K26/0622 ,  B23K26/067 ,  B23K26/073 ,  B23K26/06 ,  C03C14/00 ,  C03B33/02 ,  C03C3/093 ,  C03B9/12

Abstract: A method for laser processing a transparent workpiece includes forming a contour line having defects in the transparent workpiece, which includes directing a pulsed laser beam oriented along a beam pathway through a beam converting element and through a phase modifying optical element such that the portion of the pulsed laser beam directed into the transparent workpiece includes a phase shifted focal line having a cross-sectional phase contour that includes phase contour ridges induced by the phase modifying optical element and extending along phase ridge lines. Moreover, the phase shifted focal line generates an induced absorption within the transparent workpiece to produce a defect within the transparent workpiece including a central defect region and a radial arm that extends outward from the central defect region in a radial defect direction oriented within 20° of the phase ridge lines of the phase shifted focal line.

公开(公告)号：US20170203994A1

公开(公告)日：2017-07-20

申请号：US15404677

申请日：2017-01-12

Applicant: Corning Incorporated

Inventor： Minghan Chen ,  Ming-Jun Li ,  Anping Liu ,  Gaozhu Peng

IPC: C03B33/09 ,  B23K26/402 ,  B23K26/00 ,  C03B33/10

CPC classification number: C03B33/093 ,  B23K26/0608 ,  B23K26/354 ,  B23K26/402 ,  B23K26/53 ,  B23K2103/54 ,  C03B33/0222 ,  C03B33/102

Abstract: Systems and methods utilizing two Airy beams to process a non-rounded edge of a glass substrate or to cleave a glass substrate are disclosed. The method includes generating first and second Airy beams and causing them to cross at a crossing to define a curved intensity profile in the vicinity of the crossing point where the first and second Airy beams have respective local radii of curvature RA and RB. The method also includes scanning the curved intensity profile either along the non-rounded outer edge or through the glass along a scan path to form on the glass substrate a rounded outer edge having a radius of curvature RE that is smaller than the first and second local radii of curvature RA and RB. The radius of curvature RE can be adjusted by changing a beam angle between the first and second Airy beams.