Patents by Inventor Robert Lettow
Robert Lettow 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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Patent number: 10876968Abstract: An sensor (2) based on an optical-sensing technique measures gaseous or dissolved analytes in a measurement medium (4). The sensor has a sensor housing (6) and an optochemical sensor element (20, 220) arranged within the sensor housing. The optochemical sensor element (220) has a substrate (222), a sensing layer (224) and a barrier layer (230). The barrier layer is arranged to protect the optochemical sensor element from interfering substances (234) present in the measurement medium.Type: GrantFiled: May 8, 2018Date of Patent: December 29, 2020Assignee: Mettler-Toledo GmbHInventors: Daniel Aigner, Robert Lettow, Toni Schneider, Martin Winkler, Stefanie Zuber
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Publication number: 20180328847Abstract: An sensor (2) based on an optical-sensing technique measures gaseous or dissolved analytes in a measurement medium (4). The sensor has a sensor housing (6) and an optochemical sensor element (20, 220) arranged within the sensor housing. The optochemical sensor element (220) has a substrate (222), a sensing layer (224) and a barrier layer (230). The barrier layer is arranged to protect the optochemical sensor element from interfering substances (234) present in the measurement medium.Type: ApplicationFiled: May 8, 2018Publication date: November 15, 2018Inventors: Daniel Aigner, Robert Lettow, Toni Schneider, Martin Winkler, Stefanie Zuber
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Patent number: 9329375Abstract: A microscope includes an image acquisition system, microscope components and a touch screen. The image acquisition system is configured to optically and digitally image an object so as to produce an object image The microscope components are at least one of motorized and electrically controllable. The touch screen is configured to display the object image in a display area thereof and to sense inputs in the display area within the displayed object image so as to change settings of the microscope components.Type: GrantFiled: November 11, 2011Date of Patent: May 3, 2016Assignee: LEICA MICROSYSTEMS (SCHWEIZ) AGInventors: Reto Zuest, Ruedi Rottermann, Harald Schnitzler, Robert Lettow
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Patent number: 9146392Abstract: A diaphragm arrangement (100) for generating an oblique illumination in a microscope comprises a carrier element (130), an iris diaphragm element (110) having a variable iris diaphragm opening (111), a further diaphragm element (120) having a diaphragm opening (121) that, when it is in a first position relative to the carrier element (130), covers a portion of the iris diaphragm opening (111) and is mounted rotatably around a first rotation axis (A), such that a rotation of the further diaphragm element (120) around the first rotation axis (A) changes that portion of the iris diaphragm opening (111) which is covered by the further diaphragm element (120), and an actuation element (140) coupled to the further diaphragm element (120) via a coupling device (150) such that a rotation of the further diaphragm element (120) around the first rotation axis (A) is produced by an actuation of the actuation element (140).Type: GrantFiled: April 9, 2013Date of Patent: September 29, 2015Assignee: LEICA MICROSYSTEMS (SCHWEIZ) AGInventors: Robert Lettow, Paul Gräfenhain
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Patent number: 9042011Abstract: A microscope includes a light source including an LED device having a light radiating surface and a light directing element including a larger coupling-out surface. The light directing element is disposed so as to couple in light radiated by the light source and couple out the radiated light from the coupling-out surface. The light directing element is disposed so that the light is radiated out in an angular range of ±10° to ±50° and illuminates an area at 5 meters in an angular range of at least ±5° with intensity fluctuations of less than 50%. A condenser is disposed between the coupling-out surface of the light directing element and the object to be viewed. The condenser has an aperture with an aperture dimension and is disposed such that the aperture is irradiated completely with the light coupled out from the coupling-out surface.Type: GrantFiled: September 13, 2012Date of Patent: May 26, 2015Assignee: LEICA MICROSYSTEMS (SCHWEIZ) AGInventors: Robert Lettow, Guenter Grabher
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Publication number: 20130271808Abstract: A diaphragm arrangement (100) for generating an oblique illumination in a microscope comprises a carrier element (130), an iris diaphragm element (110) having a variable iris diaphragm opening (111), a further diaphragm element (120) having a diaphragm opening (121) that, when it is in a first position relative to the carrier element (130), covers a portion of the iris diaphragm opening (111) and is mounted rotatably around a first rotation axis (A), such that a rotation of the further diaphragm element (120) around the first rotation axis (A) changes that portion of the iris diaphragm opening (111) which is covered by the further diaphragm element (120), and an actuation element (140) coupled to the further diaphragm element (120) via a coupling device (150) such that a rotation of the further diaphragm element (120) around the first rotation axis (A) is produced by an actuation of the actuation element (140).Type: ApplicationFiled: April 9, 2013Publication date: October 17, 2013Inventors: Robert Lettow, Paul Gräfenhain
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Publication number: 20130070335Abstract: A microscope includes a light source including an LED device having a light radiating surface and a light directing element including a larger coupling-out surface. The light directing element is disposed so as to couple in light radiated by the light source and couple out the radiated light from the coupling-out surface. The light directing element is disposed so that the light is radiated out in an angular range of ±10° to ±50° and illuminates an area at 5 meters in an angular range of at least ±5° with intensity fluctuations of less than 50%. A condenser is disposed between the coupling-out surface of the light directing element and the object to be viewed. The condenser has an aperture with an aperture dimension and is disposed such that the aperture is irradiated completely with the light coupled out from the coupling-out surface.Type: ApplicationFiled: September 13, 2012Publication date: March 21, 2013Applicant: LEICA MICROSYSTEMS (SCHWEIZ) AGInventors: Robert Lettow, Guenter Grabher
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Publication number: 20120120222Abstract: An operator control unit for use with a microscope is configured for at least one of selecting and adjusting at least one electrically controllable function of the microscope. The operator control unit is portable with one hand and includes a handle portion and at least one sensor configured to receive user control commands so as to at least one of activate, deactivate and adjust the at least one electrically controllable function. The at least one sensor includes a touch sensor and is disposed so as to accommodate holding and operation of the operator control unit simultaneously with one hand. The at least one sensor is disposed symmetrically with respect to the handle portion. The at least one sensor is assignable to different changeable microscope functions by actuation of at least one of the control unit and the at least one sensor.Type: ApplicationFiled: November 10, 2011Publication date: May 17, 2012Applicant: LEICA MICROSYSTEMS (SCHWEIZ) AGInventors: Robert Lettow, Reto Zuest, Harald Schnitzler
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Publication number: 20120120224Abstract: A microscope includes an image acquisition system, microscope components and a touch screen. The image acquisition system is configured to optically and digitally image an object so as to produce an object image The microscope components are at least one of motorized and electrically controllable. The touch screen is configured to display the object image in a display area thereof and to sense inputs in the display area within the displayed object image so as to change settings of the microscope components.Type: ApplicationFiled: November 11, 2011Publication date: May 17, 2012Applicant: LEICA MICROSYSTEMS (SCHWEIZ) AGInventors: Reto Zuest, Ruedi Rottermann, Harald Schnitzler, Robert Lettow
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Publication number: 20120120223Abstract: A portable microscope includes an integrated operator control unit configured for at least one of selecting and adjusting at least one electrically controllable function of the microscope. The operator control unit includes at least one sensor configured to receive user control commands for at least one of activation, deactivation and adjustment of the at least one electrically controllable function. The at least one sensor includes a touch sensor and is disposed so as to accommodate holding and operation of the microscope with a single hand of a user.Type: ApplicationFiled: November 10, 2011Publication date: May 17, 2012Applicant: LEICA MICROSYSTEMS (SCHWEIZ) AGInventors: Reto Zuest, Harald Schnitzler, Ruedi Rottermann, Robert Lettow