Patents by Inventor Erik Essers

Erik Essers 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: 20190259575
    Abstract: A multi-beam particle beam system includes a multi-aperture plate having a multiplicity of apertures. During operation, one particle beam of the plurality of particle beams passes through each of the apertures. A multiplicity of electrodes are insulated from the second multi-aperture plate to influence the particle beam passing through the aperture. A voltage supply system for the electrodes includes: a signal a generator to generate a serial sequence of digital signals; a D/A converter to convert the digital signals into a sequence of voltages between an output of the D/A converter and the multi-aperture plate; and a controllable changeover system, which feeds the sequence of voltages successively to different electrodes.
    Type: Application
    Filed: February 15, 2019
    Publication date: August 22, 2019
    Inventors: Yanko Sarov, Jan Horn, Ulrich Bihr, Christof Riedesel, Erik Essers
  • Publication number: 20180342368
    Abstract: Disclosed is a charged particle optical apparatus. The charged particle optical apparatus has a liner electrode in a first vacuum zone. The liner electrode is used to generate an electrostatic objective lens field. The apparatus has a second electrode which surrounds at least a section of the primary particle beam path. The section extends in the first vacuum zone and downstream of the liner electrode. A third electrode is provided having a differential pressure aperture through which the particle beam path exits from the first vacuum zone. A particle detector is configured for detecting emitted particles, which are emitted from the object and which pass through the differential pressure aperture of the third electrode. The liner electrode, the second and third electrodes are operable at different potentials relative to each other.
    Type: Application
    Filed: July 27, 2018
    Publication date: November 29, 2018
    Inventors: Erik Essers, Michael Albiez, Stefan Meyer, Daniel Kirsten, Stewart Bean
  • Patent number: 10068744
    Abstract: Disclosed is a charged particle optical apparatus. The charged particle optical apparatus has a liner electrode in a first vacuum zone. The liner electrode is used to generate an electrostatic objective lens field. The apparatus has a second electrode which surrounds at least a section of the primary particle beam path. The section extends in the first vacuum zone and downstream of the liner electrode. A third electrode is provided having a differential pressure aperture through which the particle beam path exits from the first vacuum zone. A particle detector is configured for detecting emitted particles, which are emitted from the object and which pass through the differential pressure aperture of the third electrode. The liner electrode, the second and third electrodes are operable at different potentials relative to each other.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: September 4, 2018
    Assignee: Carl Zeiss Microscopy GmbH
    Inventors: Erik Essers, Michael Albiez, Stefan Meyer, Daniel Kirsten, Stewart Bean
  • Patent number: 9741528
    Abstract: Disclosed is a charged particle optical apparatus, which includes a particle optical arrangement, configured to define a particle beam path for inspecting an object. The object is accommodated in a pressure-controlled interior of a specimen chamber during the inspection of the object. The charged particle optical apparatus further includes a differential pressure module having a differential pressure aperture. A positioning arm is arranged in the specimen chamber for selectively position the differential pressure module within the pressure-controlled interior of the specimen chamber into an operating position in which the particle beam path passes through the differential pressure aperture. The selective positioning includes an advancing movement of the differential pressure module toward the primary particle beam path. The advancing movement is transmitted to the differential pressure module by a track-guided movement of the positioning arm.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: August 22, 2017
    Assignee: CARL ZEISS MICROSCOPY GMBH
    Inventors: Michael Albiez, Stefan Meyer, Daniel Kirsten, Stewart Bean, Erik Essers
  • Publication number: 20170154752
    Abstract: Disclosed is a charged particle optical apparatus. The charged particle optical apparatus has a liner electrode in a first vacuum zone. The liner electrode is used to generate an electrostatic objective lens field. The apparatus has a second electrode which surrounds at least a section of the primary particle beam path. The section extends in the first vacuum zone and downstream of the liner electrode. A third electrode is provided having a differential pressure aperture through which the particle beam path exits from the first vacuum zone. A particle detector is configured for detecting emitted particles, which are emitted from the object and which pass through the differential pressure aperture of the third electrode. The liner electrode, the second and third electrodes are operable at different potentials relative to each other.
    Type: Application
    Filed: December 1, 2015
    Publication date: June 1, 2017
    Inventors: Erik Essers, Michael Albiez, Stefan Meyer, Daniel Kirsten, Stewart Bean
  • Patent number: 8431894
    Abstract: An electron beam device has an electron gun for generating an electron beam, an objective lens for focusing the electron beam on an object and at least one detector for detecting electrons emitted by the object or electrons backscattered by the object. Detection of electrons emitted by or backscattered by an object may be simplified and improved using quadrupole devices and certain configurations of these devices provided in the electron beam device.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: April 30, 2013
    Assignee: Carl Zeiss Microscopy GmbH
    Inventors: Erik Essers, Gerd Benner, Volker Drexel
  • Patent number: 7501595
    Abstract: Apparatus and method for activating a passive entry system. The motion detector can include a latch input lever, a switch, and a damper. The damper can provide more resistance to the latch input lever in order to transfer motion to the switch in response to fast movement of the door handle. In some embodiments, the motion detector can include a switch actuator, a notched lever, and a switch. Movement of the notched lever can cause the switch actuator to contact the switch. In other embodiments, the motion detector can include a switch actuator, a notched lever, and a magnetic sensor switch. The magnetic sensor switch can include a magnetic switch member that moves in response to a second end of the switch actuator in order to complete a circuit to the passive entry system.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: March 10, 2009
    Assignee: Strattec Security Corporation
    Inventors: Steven J. Dimig, David C. Janssen, Erik Esser
  • Publication number: 20090039257
    Abstract: An electron beam device has an electron gun for generating an electron beam, an objective lens for focusing the electron beam on an object and at least one detector for detecting electrons emitted by the object or electrons backscattered by the object. Detection of electrons emitted by or backscattered by an object may be simplified and improved using quadrupole devices and certain configurations of these devices provided in the electron beam device.
    Type: Application
    Filed: July 28, 2005
    Publication date: February 12, 2009
    Inventors: Erik Essers, Gerd Benner, Volker Drexel
  • Publication number: 20070241862
    Abstract: A transponder authorization system and method. The transponder authorization system can include an operator device having a transponder and an antenna coupled to a powersports vehicle. The antenna can generate a field. The transponder authorization system can also include an authorization system electrically connected to the antenna and an ignition switch. The transponder authorization system can also include a button coupled to the ignition switch. The button can be pushed by an operator to actuate the ignition switch. The transponder can receive and transmit a signal when in the presence of the field. The authorization system can verify the signal in order to start the powersports vehicle.
    Type: Application
    Filed: April 12, 2006
    Publication date: October 18, 2007
    Inventors: Steven Dimig, Michael Feucht, Abdel Salah, Erik Esser, Alan Ritz
  • Publication number: 20070080049
    Abstract: Apparatus and method for activating a passive entry system. The motion detector can include a latch input lever, a switch, and a damper. The damper can provide more resistance to the latch input lever in order to transfer motion to the switch in response to fast movement of the door handle. In some embodiments, the motion detector can include a switch actuator, a notched lever, and a switch. Movement of the notched lever can cause the switch actuator to contact the switch. In other embodiments, the motion detector can include a switch actuator, a notched lever, and a magnetic sensor switch. The magnetic sensor switch can include a magnetic switch member that moves in response to a second end of the switch actuator in order to complete a circuit to the passive entry system.
    Type: Application
    Filed: October 6, 2005
    Publication date: April 12, 2007
    Inventors: Steven Dimig, David Janssen, Erik Esser
  • Patent number: 6969854
    Abstract: An arrangement for holding a particle beam apparatus such as a transmission electron microscope. The arrangement is sufficient for receiving a good resolution in the area of 1 ? or less, said arrangement still being under more or less no influence of the environment, in particular, building vibrations. In one embodiment, the arrangement comprises a base structure comprising a plurality of hollow bodies, at least one of said hollow bodies having a first length extension in a first direction, a second length extension in a second direction and a third length extension in a third direction, said first length extension being larger than said second and third length extensions, and wherein a cross section of said at least one of said hollow bodies perpendicular to said first direction is substantially triangular. Due to the hollow body shape, a very stiff structure is provided with a very good eigenfrequency.
    Type: Grant
    Filed: July 7, 2003
    Date of Patent: November 29, 2005
    Assignee: Carl Zeiss NTS GmbH
    Inventors: Erik Essers, Michael Trunz
  • Patent number: 6949744
    Abstract: An electron microscopy system and an electron microscopy method for detection of time dependencies of secondary electrons generated by primary electrons is provided, in which the primary electron pulses are directed onto a sample surface and electrons emanating from the sample surface are detected, time resolved. To this end the system comprises in particular a cavity resonator. A cavity resonator can also be used to reduce aberrations of focusing lenses.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: September 27, 2005
    Assignee: Carl Zeiss NTS GmbH
    Inventors: Michael Steigerwald, Erik Essers
  • Publication number: 20050173644
    Abstract: A detector for scanning electron microscopes, which can be used under different pressure conditions in the specimen chamber of the electron microscope, designed for the detection of both electrons and light. For this purpose, the detector has a photodetector and a scintillator of a material transmissive for visible light connected before the photodetector. The scintillator can be provided with a coating transparent to visible light. By the application of different potentials, the detector is suitable for the detection of electrons in high vacuum and for the detection of light with high pressures in the specimen chamber.
    Type: Application
    Filed: June 29, 2001
    Publication date: August 11, 2005
    Inventors: Peter Gnauck, Volker Drexel, Erik Essers
  • Publication number: 20050012593
    Abstract: In some embodiments of the present invention, a modular vehicle ignition system is disclosed that is capable of housing various components, such as a lock cylinder, a remote keyless entry (RKE) transceiver, a radio frequency identification (RFID) transceiver, an operator identification system, a steering column lock, an ignition switch, and the like. In some embodiments, one or more of these components is coupled to a circuit board that is coupled to the housing. Furthermore, one or more of these components can be networked to other electronic and electromagnetic systems of the vehicle.
    Type: Application
    Filed: April 9, 2004
    Publication date: January 20, 2005
    Inventors: Donald Harrod, Steven Dimig, Alan Ritz, William Schuster, Erik Esser
  • Publication number: 20050006582
    Abstract: An electron microscopy system and an electron microscopy method for detection of time dependencies of secondary electrons generated by primary electrons is provided, in which the primary electron pulses are directed onto a sample surface and electrons emanating from the sample surface are detected, time resolved. To this end the system comprises in particular a cavity resonator. A cavity resonator can also be used to reduce aberrations of focusing lenses.
    Type: Application
    Filed: April 16, 2004
    Publication date: January 13, 2005
    Applicant: LEO Elektronenmikroskopie GmbH
    Inventors: Michael Steigerwald, Erik Essers
  • Patent number: 6707041
    Abstract: A detector for scanning electron microscopes with high pressure in the sample chamber has a first electrode for accelerating electrons emergent from a sample received on the sample holder, and at least one second electrode, the end of which directed toward the sample holder is at a smaller distance from the sample holder than the first electrode, and is at a potential between the potential of the first electrode and the potential of the beam guiding tube. The volume of the secondary electron cascade is increased by the second electrode. In an alternative embodiment for a gas scintillation detector, there is adjoined to a region of high secondary electron amplification, an elongate region in which the amplification factor for secondary electrons is approximately 1. The first region serves for the production of a relatively large electron current and the second, elongate, region for the production of a strong photon signal while maintaining the photon current.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: March 16, 2004
    Assignee: Leo Elektronermikroskopie GmbH
    Inventor: Erik Essers
  • Patent number: 6590210
    Abstract: With a scanning electron microscope having an electron gun and a specimen chamber between which one or more pressure stage apertures are arranged, through whose orifices a primary electron beam can be deflected to a specimen in the specimen chamber, where the lowest pressure stage aperture (18) nearest the specimen, through which the primary electron beam strikes the specimen, is set up to shield an elevated pressure in the specimen chamber with respect to the remaining microscope column of the scanning electron microscope and to allow secondary electrons emanating from the specimen to pass through their orifice to reach at least one detector, the detector is a high-sensitivity detector (74) biased at a positive potential with respect to the specimen.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: July 8, 2003
    Inventor: Erik Essers
  • Publication number: 20030010913
    Abstract: A detector for scanning electron microscopes with high pressure in the sample chamber has a first electrode for accelerating electrons emergent from a sample received on the sample holder, and at least one second electrode, the end of which directed toward the sample holder is at a smaller distance from the sample holder than the first electrode, and is at a potential between the potential of the first electrode and the potential of the beam guiding tube. The volume of the secondary electron cascade is increased by the second electrode. In an alternative embodiment for a gas scintillation detector, there is adjoined to a region of high secondary electron amplification, an elongate region in which the amplification factor for secondary electrons is approximately 1. The first region serves for the production of a relatively large electron current and the second, elongate, region for the production of a strong photon signal while maintaining the photon current.
    Type: Application
    Filed: May 29, 2002
    Publication date: January 16, 2003
    Inventor: Erik Essers