Patents by Inventor Lieu-Kim Dang
Lieu-Kim Dang 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: 20230001563Abstract: A handheld working tool for treating a workpiece comprises a tool nose provided for contacting the workpiece at a working point, and an indicator provided for indicating a reference point on a surface of the workpiece at a predetermined distance to the working point when the tool nose contacts the workpiece at the working point.Type: ApplicationFiled: December 2, 2020Publication date: January 5, 2023Inventors: Lieu-Kim DANG, Jann SCHRANER, Neil O'DOWD
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Publication number: 20230003523Abstract: A laser system (10) for generating a linear laser marking (38) on a projection surface (37), including: a laser beam source (11), which generates a laser beam (28) and emits it along a propagation direction (29), an offset device (16) having a first interface (21), at which a first deflection of the laser beam is effected, and a conical mirror (14), which is embodied as a right cone having a cone axis (15) and a reflective lateral surface (26), wherein the conical mirror (14) is arranged in the beam path of the laser beam downstream of the offset device (16). The offset device (16) is embodied as rotatable about an axis of rotation (17), wherein the axis of rotation is arranged coaxially with respect to the cone axis (15).Type: ApplicationFiled: December 7, 2020Publication date: January 5, 2023Inventor: Lieu-Kim DANG
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Publication number: 20220413309Abstract: A laser system (10) for generating a linear laser marking (34) on a projection surface (33), including a laser beam source (11), which generates a laser beam (25) and emits it along a propagation direction (26), a first beam shaping optical unit (12) embodied as a collimation optical unit and having a first optical axis (13), and a conical mirror (14) which is embodied as a right cone having a cone axis (15) and a reflective lateral surface (22) and is arranged in the beam path of the laser beam downstream of the collimation optical unit (12), wherein the cone axis (15) is oriented parallel to the first optical axis (13). The laser system (10) includes a second beam shaping optical unit (16), which is arranged in the beam path of the laser beam upstream of the conical mirror (14) and reshapes the laser beam into a ring beam (28) having an intensity minimum in the center of the beam.Type: ApplicationFiled: December 7, 2020Publication date: December 29, 2022Inventor: Lieu-Kim DANG
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Publication number: 20220342042Abstract: An apparatus for optically measuring a distance to a target object which is embodied as a scattering target object or a reflecting target object. The apparatus has a distance measuring device and an adjustment device. In the distance measuring device, a laser beam is generated which is adjusted with the aid of the adjustment device to an external optical unit. The adjustment device includes a beam shaping optical unit and a focal shift device.Type: ApplicationFiled: September 7, 2020Publication date: October 27, 2022Inventors: Torsten GOGOLLA, Rafal CIESLAK, Petra EYRICH, Lieu-Kim DANG
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Patent number: 9568311Abstract: An optical system for shaping a laser beam is disclosed. The system includes a first optical element that has a lateral surface which is designed as a reflecting surface for the laser beam, where the lateral surface reshapes the laser beam at least in some segments thereof into a ring-shaped laser beam. The at least segmentally ring-shaped laser beam propagates in a propagation plane. A further optical element is provided for shaping the ring-shaped laser beam that shapes the ring-shaped laser beam at least in some segments thereof in a plane parallel to the propagation plane of the laser beam.Type: GrantFiled: December 21, 2011Date of Patent: February 14, 2017Assignee: Hilti AktiengesellschaftInventors: Lieu-Kim Dang, Christoph Wuersch
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Patent number: 9025231Abstract: A laser system (1) for creating a laser marking (23) on a substrate (4, 7), having a laser device (2) with a beam source (11) that emits a laser beam (14) along a first optical axis (16), and having a deflection unit (3) with a deflection lens (19) that deflects the laser beam (14) along a second optical axis (22), whereby the first and second optical axes (16, 22) are arranged at an angle of 90°, and the deflection unit (3) can be adjusted with respect to the laser device (2).Type: GrantFiled: June 13, 2012Date of Patent: May 5, 2015Assignee: Hilti AktiengesellschaftInventors: Lieu-Kim Dang, Christoph Wuersch
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Patent number: 8994927Abstract: A measuring device for the measurement of a distance to a target object has a beam source which is designed as an electrical-optical component and which emits a transmission beam. A detector, which is designed as a further electrical-optical component, receives a reception beam that is reflected and/or scattered by the target object. A beam splitting lens is configured to deflect the transmission and/or reception beam. Alternatively or additionally, the measuring device includes a beam shaping lens is configured for shaping the transmission and/or reception beam. A lens support is configured to accommodate the electrical-optical components. The lens support also accommodates the beam splitting lens and/or the beam shaping lens. The lens support has a first wafer for accommodating the electrical-optical components and a second wafer for accommodating the beam splitting lens, and/or the beam shaping lens.Type: GrantFiled: December 18, 2012Date of Patent: March 31, 2015Assignee: Hilti AktiengesellschaftInventor: Lieu-Kim Dang
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Patent number: 8919002Abstract: A laser system for creating a linear laser marking, including a radiation source that emits a laser beam and that emits it along a direction of propagation, a focusing lens assembly with an optical axis, and a conical mirror that, at least in certain areas, is configured as a straight cone with a cone axis and a reflecting lateral surface. The conical mirror is arranged in the beam path of the laser beam behind the focusing lens assembly, and the cone axis is oriented parallel to the optical axis of the focusing lens assembly. The direction of propagation of the laser beam is inclined at an angle relative to the optical axis of the focusing lens assembly.Type: GrantFiled: December 10, 2012Date of Patent: December 30, 2014Assignee: Hilti AktiengesellschaftInventor: Lieu-Kim Dang
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Patent number: 8806767Abstract: A laser instrument and a method for adjusting the laser power is disclosed. The laser instrument includes a laser device which generates a laser beam and a rotating device which moves the laser device back and forth around an axis of rotation between a first turning point and a second turning point. The laser beam generates a laser line between a first end point and a second end point on a target surface. A control device is provided which adjusts the laser power of the laser beam as a function of a rotation angle and/or an angular velocity of the rotating device.Type: GrantFiled: July 20, 2011Date of Patent: August 19, 2014Assignee: Hilti AktiengesellschaftInventors: Andreas Winter, Sasha Lukic, Lieu-Kim Dang
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Patent number: 8789956Abstract: An optical system for shaping a laser beam includes an optical element with a base member having a lower base, an upper base, and a lateral surface. The lateral surface includes a transmitting surface for the laser beam, and the base member includes a first cutout portion having a lower base arranged in the upper base of the base member, and a lateral surface that has a first reflecting surface for the laser beam and generates an at least segmentally ring-shaped laser beam. The base member includes a second cutout portion having a lower base arranged in the lower base of the base member, an upper base that includes a transmitting surface for the laser beam, and a lateral surface abutting the lower and upper base. The lateral surface includes a second reflecting surface for the at least segmentally ring-shaped laser beam.Type: GrantFiled: December 21, 2011Date of Patent: July 29, 2014Assignee: Hilti AktiengesellschaftInventors: Lieu-Kim Dang, Stefan Barth
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Publication number: 20130016414Abstract: A laser system (1) for creating a laser marking (23) on a substrate (4, 7), having a laser device (2) with a beam source (11) that emits a laser beam (14) along a first optical axis (16), and having a deflection unit (3) with a deflection lens (19) that deflects the laser beam (14) along a second optical axis (22), whereby the first and second optical axes (16, 22) are arranged at an angle of 90°, and the deflection unit (3) can be adjusted with respect to the laser device (2).Type: ApplicationFiled: June 13, 2012Publication date: January 17, 2013Applicant: Hilti AktiengesellschaftInventors: Lieu-Kim Dang, Christoph Wuersch
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Publication number: 20120327662Abstract: An optical system for shaping a laser beam is disclosed. The system includes a first optical element that has a lateral surface which is designed as a reflecting surface for the laser beam, where the lateral surface reshapes the laser beam at least in some segments thereof into a ring-shaped laser beam. The at least segmentally ring-shaped laser beam propagates in a propagation plane. A further optical element is provided for shaping the ring-shaped laser beam that shapes the ring-shaped laser beam at least in some segments thereof in a plane parallel to the propagation plane of the laser beam.Type: ApplicationFiled: December 21, 2011Publication date: December 27, 2012Applicant: Hilti AktiengesellschaftInventors: Lieu-Kim Dang, Christoph Wuersch
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Publication number: 20120187868Abstract: A laser instrument and a method for adjusting the laser power is disclosed. The laser instrument includes a laser device which generates a laser beam and a rotating device which moves the laser device back and forth around an axis of rotation between a first turning point and a second turning point. The laser beam generates a laser line between a first end point and a second end point on a target surface. A control device is provided which adjusts the laser power of the laser beam as a function of a rotation angle and/or an angular velocity of the rotating device.Type: ApplicationFiled: July 20, 2011Publication date: July 26, 2012Applicant: Hilti AktiengesellschaftInventors: Andreas WINTER, Sasha Lukic, Lieu-Kim Dang
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Publication number: 20120188645Abstract: An optical system for shaping a laser beam is disclosed. The optical system includes an optical element with a base member having a lower base, an upper base, and a lateral surface. The lateral surface includes a transmitting surface for the laser beam, and the base member includes a first cutout portion having a lower base arranged in the upper base of the base member, and a lateral surface that has a first reflecting surface for the laser beam and generates an at least segmentally ring-shaped laser beam. The base member includes a second cutout portion having a lower base arranged in the lower base of the base member, an upper base that includes a transmitting surface for the laser beam, and a lateral surface abutting the lower and upper base. The lateral surface includes a second reflecting surface for the at least segmentally ring-shaped laser beam.Type: ApplicationFiled: December 21, 2011Publication date: July 26, 2012Applicant: Hilti AktiengesellschaftInventors: Lieu-Kim Dang, Stefan Barth
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Publication number: 20110280017Abstract: An optical system is provided for shaping a laser beam, having a first optical element which is designed at least partially as a base body, the base body having a base surface area and having a curved surface area which abuts said base surface area. The base surface area and the curved surface area are designed at least partially as transmission surfaces for the laser beam, and the base body has a recess with a curved surface area, wherein the curved surface area is designed at least partially as a reflecting surface for the laser beam.Type: ApplicationFiled: May 10, 2011Publication date: November 17, 2011Inventor: Lieu-Kim Dang
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Patent number: 7593172Abstract: An optical assembly has an optics carrier (2) which is adjustable with respect to an axis (A) and to which at least two optical elements are fixedly connected, with the optics carrier (2) including at least two partial carriers (5a, 5b), each of which secures an optical element, and with the two partial carriers (5a, 5b) being connected to one another by at least three axially elongate, flexible connection members (6) which are spaced apart in a plane and secured by frictional engagement in corresponding associated connection openings (8) so as to be displaceable axially.Type: GrantFiled: July 16, 2007Date of Patent: September 22, 2009Assignee: Hilti AktiengesellschaftInventors: Roman Steffen, Lieu-Kim Dang, Detlef Juesten
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Publication number: 20090154510Abstract: An optoelectrical assembly (1) has a modular frequency-doubled solid state laser (2), which is fixed so as to be aligned therein, with an optical resonator (3) which is connected in a thermally conducting manner to a heat source (5) which is controllable by controlling means (4). The operating temperature (T) of the solid state laser (2) is adjusted by the controlling means (4) to between 40° C. and 55° C.Type: ApplicationFiled: December 17, 2008Publication date: June 18, 2009Inventors: Stefan Tiefenthaler, Lieu-Kim Dang
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Patent number: 7342732Abstract: An optical mount (1) for optical component (2) which has a edge contour (4) relative to extending radially optical axis (A), includes a rigid optical support (3) having an axially oriented stop edge (5), which is suitable for an axial contact with the optical component (2), and at least one flexible spring element which is arranged radially outside the stop edge (5), extends axially on the component side and is curved radially inward. The radial spring element passes at an axial distance from the stop edge into a circumferentially closed jacket sleeve an inner contour (8) of which extends farther radially than the edge contour (4) of the optical component (2).Type: GrantFiled: February 1, 2007Date of Patent: March 11, 2008Assignee: Hilti AktiengesellschaftInventors: Lieu-Kim Dang, Roman Steffen, Mustafa Kücük, Christian Haefele
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Patent number: 7280459Abstract: A device for reading from and/or writing to optical recording media 10, on which information is present in the form of pits, with a linearly polarized light beam 2. A device for reading from and/or writing to optical recording media 10 which ensures correct reproduction of the stored data even when the recording medium influences the polarization of the light beam 2.Type: GrantFiled: March 31, 2003Date of Patent: October 9, 2007Assignee: Thomson LicensingInventors: Lieu-Kim Dang, Heinz-Jörg Schröder
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Patent number: 7268951Abstract: An optical beam splitter (1) for a light beam (2) that is parallel along a beam axis (A) has a transparent central area (3) and a plurality of reflecting reflector surfaces (4a, 4b) that are respectively inclined by a reflector angle (?) relative to the beam axis (A) for generating each a discrete spot beam (5a, 5b), with the central area (3) being convexly curved in the manner of a prism at least in part and/or has beam-expanding diffractive optics (19).Type: GrantFiled: September 7, 2004Date of Patent: September 11, 2007Assignee: Hilti AktiengesellschaftInventors: Lieu-Kim Dang, Reinhard Waibel