Patents by Inventor Thomas Mitra

Thomas Mitra 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).

  • Publication number: 20240134918
    Abstract: Systems and methods for dynamic user profile projection are provided. One or more aspects of the systems and methods includes computing, by a prediction component, a predicted number of lookups for a future time period based on a lookup history of a user profile using a lookup prediction model; comparing, by the prediction component, the predicted number of lookups to a lookup threshold; and transmitting, by a projection component, the user profile to an edge server based on the comparison.
    Type: Application
    Filed: October 23, 2022
    Publication date: April 25, 2024
    Inventors: Nathan Ng, Tung Mai, Thomas Greger, Kelly Quinn Nicholes, Antonio Cuevas, Saayan Mitra, Somdeb Sarkhel, Anup Bandigadi Rao, Ryan A. Rossi, Viswanathan Swaminathan, Shivakumar Vaithyanathan
  • Publication number: 20240134919
    Abstract: Systems and methods for dynamic user profile management are provided. One aspect of the systems and methods includes receiving, by a lookup component, a request for a user profile; computing, by a profile component, a time-to-live (TTL) refresh value for the user profile based on a lookup history of the user profile; updating, by the profile component, a TTL value of the user profile based on the request and the TTL refresh value; storing, by the profile component, the user profile and the updated TTL value in the edge database; and removing, by the edge database, the user profile from the edge database based on the updated TTL value.
    Type: Application
    Filed: October 23, 2022
    Publication date: April 25, 2024
    Inventors: Nathan Ng, Tung Mai, Thomas Greger, Kelly Quinn Nicholes, Antonio Cuevas, Saayan Mitra, Somdeb Sarkhel, Anup Bandigadi Rao, Ryan A. Rossi, Viswanathan Swaminathan, Shivakumar Vaithyanathan
  • Patent number: 10254552
    Abstract: A laser device comprises first and second laser units to respectively emit first and second laser beams that propagate in first and second directions and that are polarized in first and second polarization directions and a polarization coupling prism arranged to couple the two laser beams. The coupling prism comprises: a light entry surface to receive the first laser beam; a reflecting surface to reflect the first laser beam at an angle greater than the limit angle of total inner reflection; and a light exit surface through which the first laser beam exits the prism. The second laser unit is arranged relative to the polarization coupling prism to cause the second laser beam to impinge on and be reflected at the light exit surface in the same direction as the first laser beam exiting the prism, resulting in a collinear superposition of the first and second laser beams.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: April 9, 2019
    Assignee: LIMO GmbH
    Inventors: Thomas Mitra, Sabine Dommers-Völkel
  • Patent number: 10025106
    Abstract: A lighting device (1) including at least one laser-diode bar with a plurality of emitters arranged adjacently to one another in a first direction and able to emit sub-beams during operation. The sub-beams having a lower beam divergence in a first direction that forms a slow-axis direction than in a second direction that forms a fast-axis direction and is perpendicular to the first direction. At least some of the emitters having a height offset in relation to the other emitters. A fast collimation means positioned behind the at least one laser-diode bar in a beam-propagation direction perpendicular to the slow-axis direction and the fast-axis direction. Beam transformation means positioned behind the fast-axis collimation means in the beam-propagation direction and designed to rotate the sub-beams through 90° as they pass thorough said means.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: July 17, 2018
    Assignee: LIMO PATENTVERWALTUNG GMBH & CO. KG
    Inventor: Thomas Mitra
  • Patent number: 10025108
    Abstract: The assembly to homogenize a light beam, especially from an excimer laser, has at least two optical functional surfaces (26) in succession along the light path (z). Two groups of refractive or diffractive imaging elements are at the optical surfaces as cylinder lenses (30, 30?, 32), with at least two imaging elements of different characteristics within at least one of the groups. The light beam is finally carried through a Fourier lens (28) to the working plane (29).
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: July 17, 2018
    Assignee: LIMO PATENTVERWALTUNG GmbH & Co. KG
    Inventor: Thomas Mitra
  • Patent number: 9823479
    Abstract: Device for shaping laser radiation (10a, 10c), comprising a component (1) having an entrance face (2) and an exit face (3), a first lens array (4) on the entrance face (2) with a plurality of lenses (5a, 5c, 5e) juxtaposed in the X-direction, and a second lens array (6) on the exit face (3) with a plurality of lenses (7a, 7c, 7e) juxtaposed in the Y-direction, wherein the laser radiation (10a, 10c) is deflected by a first one of the lenses (5a, 5c, 5e) of the first lens array (4) with respect to the X- and Y-direction by a different angle than from a second one of the lenses (5a, 5c, 5e) of the first lens array (4), and/or wherein the laser radiation (10a, 10c) is deflected by a first of the lenses (7a, 7c, 7e) of the second lens array (6) with respect to the X- and Y-direction by a different angle than by a second one of the lenses (7a, 7c, 7e) of the second lens array (6).
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: November 21, 2017
    Assignee: LIMO PATENTVERWALTUNG GMBH & CO. KG
    Inventor: Thomas Mitra
  • Publication number: 20170299876
    Abstract: A laser array comprises first and second laser unit to respectively emit a first and second laser beams that propagate in a first and second directions and that are polarized in first and second polarization directions and a polarization coupling prism arranged to couple the two laser beams. The coupling prism comprises: a light entry surface to receive the first laser beam; a reflecting surface to reflect the first laser beam at an angle greater than the limit angle of total inner reflection; and a light exit surface through which the first laser beam exits the prism. The second laser unit is arranged relative to the polarization coupling prism to cause the second laser beam to impinge on and be reflected at the light exit surface in the same direction as the first laser beam exiting the prism, resulting in a collinear superposition of the first and second laser beams.
    Type: Application
    Filed: April 18, 2017
    Publication date: October 19, 2017
    Inventors: Thomas MITRA, Sabine DOMMERS-VÖLKEL
  • Patent number: 9746677
    Abstract: The invention relates to a device for applying laser radiation (13) to the outside of a rotationally symmetric component (11), comprising a plurality of lenses (10), which are designed and/or arranged in such a way that the axis of symmetry (12) of the component (11) lies at the focal point of each of the lenses (10).
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: August 29, 2017
    Assignee: LIMO PATENTVERWALTUNG GMBH & CO. KG
    Inventor: Thomas Mitra
  • Patent number: 9513484
    Abstract: A device focuses laser light into a working plane. The device contains a deflection mirror and a cylindrical lens. A lens apex of the cylindrical lens has an offset and which has a first transmission portion and a second transmission portion different from the first transmission portion. The device further has retroreflector device with an optical axis. The deflection mirror is arranged in the beam path of the device such that it can deflect the laser light during the operation of the device such that the light can propagate substantially parallel to the optical axis of the retroreflector device and can be transmitted through the first transmission portion of the cylindrical lens, and can then be reflected back by the retroreflector device such that the laser light can be transmitted through the second transmission portion of the cylindrical lens and can be focused into the working plane.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: December 6, 2016
    Assignee: LIMO Patentverwaltung GmbH & Co. KG
    Inventor: Thomas Mitra
  • Publication number: 20160291331
    Abstract: Device for shaping laser radiation (10a, 10c ), comprising a component (1) having an entrance face (2) and an exit face (3), a first lens array (4) on the entrance face (2) with a plurality of lenses (5a, 5c, 5e ) juxtaposed in the X-direction, and a second lens array (6) on the exit face (3) with a plurality of lenses (7a, 7c, 7e ) juxtaposed in the Y-direction, wherein the laser radiation (10a, 10c ) is deflected by a first one of the lenses (5a, 5c, 5e ) of the first lens array (4) with respect to the X- and Y-direction by a different angle than from a second one of the lenses (5a, 5c, 5e ) of the first lens array (4), and/or wherein the laser radiation (10a, 10c ) is deflected by a first of the lenses (7a, 7c, 7e ) of the second lens array (6) with respect to the X- and Y-direction by a different angle than by a second one of the lenses (7a, 7c, 7e ) of the second lens array (6).
    Type: Application
    Filed: December 15, 2014
    Publication date: October 6, 2016
    Inventor: Thomas Mitra
  • Publication number: 20160151862
    Abstract: The invention relates to a device for the processing of a surface of a workpiece or for the post-treatment of a coating on the outside or the inside of a workpiece, in particular a metal workpiece, preferably a tube, comprising a processing head (2) that can be moved through the workpiece or outside of the workpiece, an optical fiber (5), an arrangement for feeding laser light (10) to the processing head (2) or means for producing laser light in the processing head (2), and optical arrangement (7) arranged in the processing head, which can apply the laser light (10) to the inside or the outside of the workpiece.
    Type: Application
    Filed: February 11, 2013
    Publication date: June 2, 2016
    Inventors: Paul Alexander HARTEN, Peter BRUNS, Vitalij LISSOTSCHENKO, Thomas MITRA
  • Publication number: 20160116750
    Abstract: The invention relates to a device for applying laser radiation (13) to the outside of a rotationally symmetric component (11), comprising a plurality of lenses (10), which are designed and/or arranged in such a way that the axis of symmetry (12) of the component (11) lies at the focal point of each of the lenses (10).
    Type: Application
    Filed: May 14, 2014
    Publication date: April 28, 2016
    Inventor: Thomas MITRA
  • Publication number: 20160025987
    Abstract: A lighting device (1) including at least one laser-diode bar with a plurality of emitters arranged adjacently to one another in a first direction and able to emit sub-beams during operation. The sub-beams having a lower beam divergence In a first direction that forms a slow-axis direction than in a second direction that forms a fast-axis direction and is perpendicular to the first direction. At least some of the emitters having a height offset in relation to the other emitters. A fast collimation means positioned behind the at least one laser-diode bar in a beam-propagation direction perpendicular to the slow-axis direction and the fast-axis direction. Beam transformation means positioned behind the fast-axis collimation means in the beam-propagation direction and designed to rotate the sub-beams through 90° as they pass thorough said means.
    Type: Application
    Filed: March 14, 2014
    Publication date: January 28, 2016
    Inventor: Thomas MITRA
  • Publication number: 20160011426
    Abstract: The assembly to homogenize a light beam, especially from an excimer laser, has at least two optical functional surfaces (26) in succession along the light path (z). Two groups of refractive or diffractive imaging elements are at the optical surfaces as cylinder lenses (30, 30, 32), with at least two imaging elements of different characteristics within at least one of the groups. The light beam is finally carried through a Fourier lens (28) to the working plane (29).
    Type: Application
    Filed: March 4, 2014
    Publication date: January 14, 2016
    Inventor: Thomas MITRA
  • Publication number: 20150224601
    Abstract: A method recuperates unused optical radiation energy of an optical machining apparatus having at least one light source, in particular a laser light source or a light source having a number of LEDs. The method includes operating the at least one light source and generating electromagnetic radiation, subjecting at least one workpiece to the electromagnetic radiation in order to machine the workpiece, and capturing at least a part of the electromagnetic radiation not used for machining the at least one workpiece in a beam trap device of at least one recuperation apparatus. At least a part of the radiation energy of the electromagnetic radiation captured by the beam trap device of the at least one recuperation apparatus is converted into electrical energy. A recuperation apparatus also recuperates unused electromagnetic radiation energy of an optical machining apparatus as does an optical machining apparatus.
    Type: Application
    Filed: July 9, 2013
    Publication date: August 13, 2015
    Inventor: Thomas Mitra
  • Publication number: 20150212331
    Abstract: A device focuses laser light into a working plane. The device contains a deflection mirror and a cylindrical lens. A lens apex of the cylindrical lens has an offset and which has a first transmission portion and a second transmission portion different from the first transmission portion. The device further has retroreflector device with an optical axis. The deflection mirror is arranged in the beam path of the device such that it can deflect the laser light during the operation of the device such that the light can propagate substantially parallel to the optical axis of the retroreflector device and can be transmitted through the first transmission portion of the cylindrical lens, and can then be reflected back by the retroreflector device such that the laser light can be transmitted through the second transmission portion of the cylindrical lens and can be focused into the working plane.
    Type: Application
    Filed: September 5, 2013
    Publication date: July 30, 2015
    Inventor: Thomas Mitra
  • Patent number: 8639071
    Abstract: An apparatus for forming laser radiation. The apparatus can form the laser radiation such that the laser radiation can enter an optical fiber. The apparatus contains a first lens device for deflection and/or imaging or collimation of the laser radiation with respect to a first direction, and a second lens device for deflection and/or imaging or collimation of the laser radiation with respect to a second direction. The first and the second lens devices are provided in or on a component.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: January 28, 2014
    Assignee: LIMO PatentverwaltungGmbH & Co. KG
    Inventors: Lutz Aschke, Andreas Bayer, Udo Fornahl, Jens Meinschien, Thomas Mitra
  • Publication number: 20140003456
    Abstract: The invention relates to a device for transforming the profile of a laser beam (5) into a laser beam (5) with a rotationally symmetrical intensity distribution such as an M-profile or a rotationally symmetrical top-hat profile, said device comprising at least one lens array (1) with at least two lenses (5) through which the laser beam (5) that is to be transformed can pass, and optical means which can direct the laser beam (5) that has passed through the at least one lens array (1) onto a working plane (3) and/or superimpose at least some sections of said laser beam on the working plane (3), the lenses (7) of the at least one lens array (1) being arranged coaxially or concentrically with respect to one another.
    Type: Application
    Filed: January 10, 2012
    Publication date: January 2, 2014
    Applicant: LIMO Patentverwaltung GmbH & Co.KG
    Inventors: Iouri Mikliaev, Jens Meinschien, Thomas Mitra
  • Patent number: 8587868
    Abstract: Device for splitting a light beam (1), including at least one lens array (3) with a plurality of lenses (3a-3i) of which at least two have a mutually differing, positive focal length, wherein the light beam (1) that is to be split can pass through the at least one lens array (3) and form at least some mutually separated, at least partially convergent subbeams (1a-1i) after passing through the plurality of lenses (3a-3i), and deflecting means (4) with a plurality of deflecting elements that are arranged downstream of the at least one lens array (3) and can deflect at least some of the subbeams (1a-1i), wherein at least two of the deflecting elements have a different spacing (da-di) from the at least one lens array (3).
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: November 19, 2013
    Assignee: LIMO Patentverwaltung GmbH & Co. KG
    Inventors: Thomas Mitra, Jana Fründt
  • Patent number: 8416500
    Abstract: A device for beam forming includes at least two laser light sources capable of emitting laser radiation and an optical device capable of influencing the laser radiation such that the laser radiation has an intensity distribution in a working plane that at least partially corresponds to a top-hat distribution at least with regard to one direction. The laser beam may be at least partially overlapped by the optical device. The laser beam is a single-mode laser beam at least with regard to a direction perpendicular to the distribution direction.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: April 9, 2013
    Assignee: Limo Patentverwaltung GmbH & Co. KG
    Inventors: Thomas Mitra, Lutz Aschke, Daniel Bartoschewski