Patents by Inventor David Lee Weidman
David Lee Weidman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240118495Abstract: In one embodiment, a coupler includes a glass tube having a refractive index n3 and a passageway, a first optical waveguide and a second optical waveguide positioned within the passageway, each of the first optical waveguide and the second optical waveguide comprising a core surrounded by a cladding. The glass tube further includes a tapered region having a taper length. A coupling region is present between the first optical waveguide and the second optical waveguide within the tapered region. A refractive index of the cladding is less than a refractive index of the core, and a lowest refractive index of the cladding of the first optical waveguide and the second optical waveguide is n2. Additionally, n3 is lower than n2 such that a value of ?2-3 is 0.07%??2-3?0.125, where ?2-3 equals (n22?n32)/2n22.Type: ApplicationFiled: October 10, 2022Publication date: April 11, 2024Inventors: Agnivo Gosai, Jeremy Alexander Graham, SR., William James Miller, David Lee Weidman, Aramais Robert Zakharian
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Patent number: 11912619Abstract: A textured glass article includes: a body comprising an aluminosilicate glass comprising greater than or equal to 16 wt % Al2O3, the body having at least a first surface; and a plurality of polyhedral surface features extending from the first surface, each of the plurality of polyhedral surface features comprising a base on the first surface, a plurality of facets extending from the first surface, and a surface feature size at the base greater than or equal to 10 ?m and less than or equal to 350 ?m, wherein the plurality of facets of each polyhedral surface feature converge toward one another.Type: GrantFiled: August 31, 2021Date of Patent: February 27, 2024Assignee: CORNING INCORPORATEDInventors: Xinyu Cao, Christine Cecala, Ling Chen, Wanghui Chen, Yuhui Jin, Cameron Robert Nelson, Jayantha Senawiratne, David Lee Weidman
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Publication number: 20230084912Abstract: Described herein are textured glass-based articles. The textured glass based articles may include a glass-based substrate including a first major surface and a second major surface. At least a portion of one or both of the first major surface and the second major surface is textured, wherein the portion of the one or both of the first major surface and the second major surface that are textured may have a sparkle at 140 ppi of less than or equal to 5% and an uncoupled distinctness-of-image of at least 78%. Methods for making such articles are also described herein.Type: ApplicationFiled: August 23, 2022Publication date: March 16, 2023Inventors: Christine Cecala, Ronghua Chen, Melanie Lian Geiger, Yuhui Jin, Florence Christine Monique Verrier, David Lee Weidman, Binwei Zhang
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Publication number: 20230064818Abstract: Glass-based substrates are described herein that may be processed by methods including applying a cover article onto a glass-based substrate, submerging the glass-based substrate in an etchant, and maintaining the submersion of the glass-based substrate in the etchant. The glass-based substrate may include a covered surface portion and an exposed surface portion. At least a portion of the covered surface portion may be in direct contact with the cover article. The covered surface portion may not be in contact with the etchant and the exposed surface portion may be in direct contact with the etchant. The etchant may contact the exposed surface portion and the cover article fora time sufficient to etch the exposed surface portion. The cover article may provide a barrier between the etchant and the covered surface portion for the entirety of the submerging.Type: ApplicationFiled: August 23, 2022Publication date: March 2, 2023Inventors: Huayun Deng, Melanie Lian Geiger, Richard Allen Hayes, Mingqian He, Yuhui Jin, Govindarajan Natarajan, Weijun Niu, Brian Paul Usiak, David Lee Weidman
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Publication number: 20220073418Abstract: A textured glass article includes: a body comprising an aluminosilicate glass comprising greater than or equal to 16 wt % Al2O3, the body having at least a first surface; and a plurality of polyhedral surface features extending from the first surface, each of the plurality of polyhedral surface features comprising a base on the first surface, a plurality of facets extending from the first surface, and a surface feature size at the base greater than or equal to 10 ?m and less than or equal to 350 ?m, wherein the plurality of facets of each polyhedral surface feature converge toward one another.Type: ApplicationFiled: August 31, 2021Publication date: March 10, 2022Applicant: Corning IncorporatedInventors: Xinyu Cao, Christine Cecala, Ling Chen, Wanghui Chen, Yuhui Jin, Cameron Robert Nelson, Jayantha Senawiratne, David Lee Weidman
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Publication number: 20220011468Abstract: A display article is described herein that includes: a substrate comprising a thickness and a primary surface; a textured surface region; and an antireflective coating disposed on the textured surface region. The textured surface region comprises structural features and an average texture height (Rtext) from 50 nm to 300 nm. The substrate exhibits a sparkle of less than 5%, as measured by PPD140, and a transmittance haze of less than 40%, at a 0° incident angle. The antireflective coating comprises alternating high refractive index and low refractive index layers. Each of the low index layers comprises a refractive index of less than or equal to 1.8, and each of the high index layers comprises a refractive index of greater than 1.8. The article also exhibits a first-surface average photopic specular reflectance (% R) of less than 0.3% at any incident angle from about 5° to 20° from normal at visible wavelengths.Type: ApplicationFiled: July 8, 2021Publication date: January 13, 2022Inventors: Shandon Dee Hart, Karl William Koch, III, Carlo Anthony Kosik Williams, Lin Lin, Cameron Robert Nelson, James Joseph Price, Jayantha Senawiratne, Florence Christine Monique Verrier, David Lee Weidman
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Publication number: 20210070652Abstract: A glass article is provided that includes: a glass substrate comprising a thickness and a primary surface; and a textured region defined by the primary surface. The textured region comprises a low spatial frequency region and a high spatial frequency region substantially superimposed within the low spatial frequency region. Further, the low spatial frequency region comprises an average lateral feature size that exceeds an average lateral feature size of the high spatial frequency region. In addition, the textured region comprises a surface roughness (Ra) from about 10 nm to about 1000 nm.Type: ApplicationFiled: September 9, 2020Publication date: March 11, 2021Inventors: Jaymin Amin, Yuhui Jin, Karl William Koch, III, Aize Li, David Lee Weidman
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Patent number: 10509307Abstract: High contrast, glass-based, writeable/erasable front projection screens are provided. The screens include a transparent glass sheet which has a front surface and a back surface separated by a distance d. The back surface is in optical contact with a diffusing element. During use of the projection screen, the glass sheet transmits image light from a projector to the diffusing element and the diffusing element reflects a portion of that light back through the glass sheet to a user. The screens have a user-facing surface that is a writable/erasable surface. In embodiments, the distance d is less than or equal to 0.2 millimeters, the whiteness W of the projection screen is less than or equal to 0.5, and/or the contrast C of the projection screen is at least 75%.Type: GrantFiled: July 28, 2015Date of Patent: December 17, 2019Assignee: CORNING INCORPORATEDInventors: Gordon Charles Brown, Jacques Gollier, Joan Deanna Gregorski, Vasudha Ravichandran, David Lee Weidman
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Publication number: 20190366682Abstract: A laminate structure is provided that allows the surface renewal and rework of a device by the selective removal of layers of the laminate. The selective removal may be achieved by heating or irradiating the laminate structure, such that an adhesive layer debonds and allows the removal of a damaged layer to provide a pristine surface.Type: ApplicationFiled: May 29, 2019Publication date: December 5, 2019Inventors: Dana Craig Bookbinder, Jean-Marc Martin Gerard Jouanno, Govindarajan Natarajan, David Lee Weidman, Nathaniel David Wetmore
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STRENGTHENED GLASS-BASED ARTICLES AND METHODS FOR REDUCING WARP IN STRENGTHENED GLASS-BASED ARTICLES
Publication number: 20190276356Abstract: Strengthened glass substrates and methods of reducing warp in strengthened glass substrates having 3D and 2.5D shapes are disclosed. In one embodiment, a strengthened glass-based article includes a first surface, a second surface opposite the first surface, and an edge between the first surface and the second surface. The edge is asymmetric with respect to a plane that is located at an average depth of the strengthened glass-based article and is parallel to the first surface and the second surface. The strengthened glass-based article has an expected warp WE based at least in part on a shape of the asymmetric edge of the strengthened glass-based article. An actual warp WA of the strengthened glass-based article is less than 85% of the expected warp metric WE of the strengthened glass-based article. The actual warp WA of the strengthened glass-based article is measured with a concave surface facing up.Type: ApplicationFiled: November 29, 2017Publication date: September 12, 2019Inventors: John Steele Abbott, Douglas Clippinger Allan, John Martin Darfin, Sumalee Likitvanichkul Fagan, David Lee Weidman, David Inscho Wilcox -
Publication number: 20170269466Abstract: High contrast, glass-based, writeable/erasable front projection screens are provided. The screens include a transparent glass sheet which has a front surface and a back surface separated by a distance d. The back surface is in optical contact with a diffusing element. During use of the projection screen, the glass sheet transmits image light from a projector to the diffusing element and the diffusing element reflects a portion of that light back through the glass sheet to a user. The screens have a user-facing surface that is a writable/erasable surface. In embodiments, the distance d is less than or equal to 0.2 millimeters, the whiteness W of the projection screen is less than or equal to 0.5, and/or the contrast C of the projection screen is at least 75%.Type: ApplicationFiled: July 28, 2015Publication date: September 21, 2017Inventors: Gordon Charles Brown, Jacques Gollier, Joan Deanna Gregorski, Vasudha Ravichandran, David Lee Weidman
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Patent number: 9604492Abstract: The invention relates to glass articles suitable for use as writable erasable marker boards. More particularly, disclosed is a strengthened glass article suitable for use as a writable erasable marker boards, wherein the glass sheet exhibits an ion exchanged glass having a front surface and a back surface and exhibiting a thickness of less than 2.0 mm and having a depth of layer (DOL) greater than 20 microns and a surface compressive strength of at least 300 MPa. The strengthened glass article exhibits certain optical properties which render it particularly suitable for use as a writable erasable marker boards electronic including: (1) shadow parallax to thickness ratio of less than 1 measured at a 60 degree incident light angle and for an index of refraction n; and, (2) a haze of less than 50%. Further disclosed is a markerboard with improved magnetic force attributes; sufficient to hold weak magnets in place.Type: GrantFiled: May 20, 2014Date of Patent: March 28, 2017Assignee: Corning IncorporatedInventors: Dana Craig Bookbinder, Jeffrey John Domey, Matthew Wade Fenton, David Lee Weidman
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Publication number: 20140255903Abstract: The invention relates to glass articles suitable for use as writable erasable marker boards. More particularly, disclosed is a strengthened glass article suitable for use as a writable erasable marker boards, wherein the glass sheet exhibits an ion exchanged glass having a front surface and a back surface and exhibiting a thickness of less than 2.0 mm and having a depth of layer (DOL) greater than 20 microns and a surface compressive strength of at least 300 MPa. The strengthened glass article exhibits certain optical properties which render it particularly suitable for use as a writable erasable marker boards electronic including: (1) shadow parallax to thickness ratio of less than 1 measured at a 60 degree incident light angle and for an index of refraction n; and, (2) a haze of less than 50%. Further disclosed is a markerboard with improved magnetic force attributes; sufficient to hold weak magnets in place.Type: ApplicationFiled: May 20, 2014Publication date: September 11, 2014Applicant: CORNING INCORPORATEDInventors: Dana Craig Bookbinder, Jeffrey John Domey, Matthew Wade Fenton, David Lee Weidman
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Publication number: 20140154661Abstract: The invention relates to glass articles suitable for use as writeable erasable marker boards. More particularly, disclosed is a strengthened glass article suitable for use as a writeable erasable marker boards, wherein the glass sheet exhibits an ion exchanged glass having a front surface and a back surface and exhibiting a thickness of less than 2.0 mm and having a depth of layer (DOL) greater than 20 microns and a surface compressive strength of at least 300 MPa. The strengthened glass article exhibits certain optical properties which render it particularly suitable for use as a writeable erasable marker boards electronic including: (1) shadow parallax of less than 1.73/n measured at 60 degree incident light angle and for an index of refraction n; and, (2) a haze of less than 50%. Further disclosed is a markerboard with improved magnetic force attributes; sufficient to hold weak magnets in place.Type: ApplicationFiled: December 2, 2013Publication date: June 5, 2014Applicant: CORNING INCORPORATEDInventors: Dana Craig Bookbinder, Jeffrey John Domey, Matthew Wade Fenton, David Lee Weidman
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Patent number: 8259385Abstract: A method for operating a wavelength-converted light source includes directing a pump beam having a fundamental wavelength from the laser source into an input facet of the wavelength conversion device such that a wavelength-converted output beam is emitted from an output facet of the wavelength conversion device in the field of view of an optical detector. A physical property of the wavelength conversion device is varied within individual ones of a succession of consecutive speckle reduction intervals having durations less than the integration time of the optical detector. The physical property of the wavelength conversion device is varied by an amount that is sufficient to change in a phase-matched (PM) wavelength of the wavelength conversion device. The fundamental wavelength of the pump beam is thereafter adjusted based on the change in the PM wavelength to maintain an efficiency of the wavelength conversion in the wavelength conversion device.Type: GrantFiled: October 22, 2009Date of Patent: September 4, 2012Assignee: Corning IncorporatedInventors: Martin Hempstead, Rostislav Vatchev Roussev, David Lee Weidman
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Publication number: 20110096390Abstract: A method for operating a wavelength-converted light source includes directing a pump beam having a fundamental wavelength from the laser source into an input facet of the wavelength conversion device such that a wavelength-converted output beam is emitted from an output facet of the wavelength conversion device in the field of view of an optical detector. A physical property of the wavelength conversion device is varied within individual ones of a succession of consecutive speckle reduction intervals having durations less than the integration time of the optical detector. The physical property of the wavelength conversion device is varied by an amount that is sufficient to change in a phase-matched (PM) wavelength of the wavelength conversion device. The fundamental wavelength of the pump beam is thereafter adjusted based on the change in the PM wavelength to maintain an efficiency of the wavelength conversion in the wavelength conversion device.Type: ApplicationFiled: October 22, 2009Publication date: April 28, 2011Inventors: Martin Hempstead, Rostislav Vatchev Roussev, David Lee Weidman
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Patent number: 6351588Abstract: An optical waveguiding fiber has a photosensitive core and a cladding that includes a photosensitive inner cladding region adjacent the core and an outer cladding region. The inner cladding region and the outer cladding region have substantially equal indices of refraction. The photosensitivity of the inner cladding region is sufficient to cause a modulation of the index of refraction of the inner cladding when exposed to ultraviolet light. In another aspect of the invention, the optical fiber includes a grating in the core, which extends radially into the inner cladding region. The core and the inner cladding region of the optical fiber are doped with concentrations of Ge and B sufficient to impart photosensitivity to the inner cladding region, and to result in an index of refraction in the inner cladding region substantially equal to the index of refraction of the outer cladding region.Type: GrantFiled: September 17, 1999Date of Patent: February 26, 2002Inventors: Vikram Bhatia, Adam K. Collier, Liang Dong, Marlene A. Marro, Gang Qi, Martin R. Swan, David Lee Weidman
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Patent number: 6201918Abstract: Athermalized optical waveguide devices and methods of making the athermalized devices are described. Boron is incorporated into the composition of the optical waveguides in order to athermalize the waveguides by reducing spectral shifts caused by changes in temperature. The invention includes the utilization of boron dopants in the core and cladding of optical waveguide devices such as Mach-Zehnder coupler devices and long period fiber gratings.Type: GrantFiled: December 11, 1997Date of Patent: March 13, 2001Assignee: Corning IncorporatedInventors: George Edward Berkey, Lisa Wan-I Liou, Robert Adam Modavis, Daniel Aloysius Nolan, David Lee Weidman