Patents by Inventor Eckhard Schroder

Eckhard Schroder 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).

  • Patent number: 7909463
    Abstract: Apparatus for determining defects of the retina of the eye by interaction between a patient and an examiner, which apparatus comprises an electronically-controlled, adaptive optical system configured to form an image in the eye of the patient.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: March 22, 2011
    Assignee: Carl Zeiss Meditec AG
    Inventors: Manfred Dick, Holger Mäusezahl, Eckhard Schröder
  • Publication number: 20080100803
    Abstract: There is now provided a method for determining vision defects and for collecting data for correcting vision defects of the eye. The method comprises projecting an image into the eye of the patient with an adaptive optical system having adaptive optical elements. The optical characteristics of the optical elements can be individually changed by an electrical signal. The presence of distortions of the image as perceived by the patient is determined by interaction of the patient with the examiner. By way of an electronic control system the optical characteristics of the adaptive optical elements are changed through outputting of an electrical signal to obtain a modified image with minimized distortions in the eye of the patient. The optical characteristics of the adaptive optical elements, as modified, are determined and vision correcting data for the eye being examined are computed from the optical characteristics of the adaptive optical elements, as modified.
    Type: Application
    Filed: October 25, 2007
    Publication date: May 1, 2008
    Inventors: Manfred DICK, Holger MAUSEZAHL, Eckhard SCHRODER
  • Publication number: 20060238710
    Abstract: There is now provided a method for determining vision defects and for collecting data for correcting vision defects of the eye. The method comprises projecting an image into the eye of the patient with an adaptive optical system having adaptive optical elements. The optical characteristics of the optical elements can be individually changed by an electrical signal. The presence of distortions of the image as perceived by the patient is determined by interaction of the patient with the examiner. By way of an electronic control system the optical characteristics of the adaptive optical elements are changed through outputting of an electrical signal to obtain a modified image with minimized distortions in the eye of the patient. The optical characteristics of the adaptive optical elements, as modified, are determined and vision correcting data for the eye being examined are computed from the optical characteristics of the adaptive optical elements, as modified.
    Type: Application
    Filed: January 17, 2006
    Publication date: October 26, 2006
    Inventors: Manfred Dick, Holger Mausezahl, Eckhard Schroder
  • Patent number: 6997555
    Abstract: There is now provided a method for determining vision defects and for collecting data for correcting vision defects of the eye. The method comprises projecting an image into the eye of the patient with an adaptive optical system having adaptive optical elements. The optical characteristics of the optical elements can be individually changed by an electrical signal. The presence of distortions of the image as perceived by the patient is determined by interaction of the patient with the examiner. By way of an electronic control system the optical characteristics of the adaptive optical elements are changed through outputting of an electrical signal to obtain a modified image with minimized distortions in the eye of the patient. The optical characteristics of the adaptive optical elements, as modified, are determined and vision correcting data for the eye being examined are computed from the optical characteristics of the adaptive optical elements, as modified.
    Type: Grant
    Filed: April 19, 2004
    Date of Patent: February 14, 2006
    Assignee: Carl Zeiss Meditec AG
    Inventors: Manfred Dick, Holger Mäusezahl, Eckhard Schröder
  • Publication number: 20040196435
    Abstract: There is now provided a method for determining vision defects and for collecting data for correcting vision defects of the eye. The method comprises projecting an image into the eye of the patient with an adaptive optical system having adaptive optical elements. The optical characteristics of the optical elements can be individually changed by an electrical signal. The presence of distortions of the image as perceived by the patient is determined by interaction of the patient with the examiner. By way of an electronic control system the optical characteristics of the adaptive optical elements are changed through outputting of an electrical signal to obtain a modified image with minimized distortions in the eye of the patient. The optical characteristics of the adaptive optical elements, as modified, are determined and vision correcting data for the eye being examined are computed from the optical characteristics of the adaptive optical elements, as modified.
    Type: Application
    Filed: April 19, 2004
    Publication date: October 7, 2004
    Applicant: Carl Zeiss Meditec AG
    Inventors: Manfred Dick, Holger Mausezahl, Eckhard Schroder
  • Patent number: 6722767
    Abstract: There is now provided a method for determining vision defects and for collecting data for correcting vision defects of the eye. The method comprises projecting an image into the eye of the patient with an adaptive optical system having adaptive optical elements. The optical characteristics of the optical elements can be individually changed by an electrical signal. The presence of distortions of the image as perceived by the patient is determined by interaction of the patient with the examiner. By way of an electronic control system the optical characteristics of the adaptive optical elements are changed through outputting of an electrical signal to obtain a modified image with minimized distortions in the eye of the patient. The optical characteristics of the adaptive optical elements, as modified, are determined and vision correcting data for the eye being examined are computed from the optical characteristics of the adaptive optical elements, as modified.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: April 20, 2004
    Assignee: Carl Zeiss Meditec AG
    Inventors: Manfred Dick, Holger Mäusezahl, Eckhard Schröder
  • Publication number: 20020180931
    Abstract: There is now provided a method for determining vision defects and for collecting data for correcting vision defects of the eye. The method comprises projecting an image into the eye of the patient with an adaptive Synoptical system having adaptive optical elements. The optical characteristics of the optical elements can be individually changed by an electrical signal. The presence of distortions of the image as perceived by the patient is determined by interaction of the patient with the examiner. By way of an electronic control system the optical characteristics of the adaptive optical elements are changed through outputting of an electrical signal to obtain a modified image with minimized distortions in the eye of the patient. The optical characteristics of the adaptive optical elements, as modified, are determined and vision correcting data for the eye being examined are computed from the optical characteristics of the adaptive optical elements, as modified.
    Type: Application
    Filed: May 31, 2002
    Publication date: December 5, 2002
    Inventors: Manfred Dick, Holger Mausezahl, Eckhard Schroder
  • Patent number: 5938656
    Abstract: In order to render possible the ablation to different depths in a process for correcting the shape of a lens in which the surface of the lens is acted upon by the radiation of a pulsed radiation source through a shutter in specific regions exposed by the shutter and thereby removing material from the lens by the radiation effect during the impingement of each radiation pulse, wherein the radiation is concentrated in a bundle of rays, the cross section of which is smaller when striking the lens surface than that of the lens surface exposed by the shutter, and wherein the bundle of rays is moved such that the entire lens surface exposed by the shutter is irradiated by radiation pulses consecutively impinging on the lens surface, it is suggested that the bundle of rays is moved between successive radiation pulses only to such an extent that the regions of the lens surface struck by the radiation pulses consecutively impinging on the lens surface partially overlap.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: August 17, 1999
    Assignee: Aesculap-Meditec GmbH
    Inventor: Eckhard Schroder
  • Patent number: 5000751
    Abstract: An apparatus for laser surgery, particularly of the cornea is provided. Through this apparatus, a laser, especially a UV-laser, can be imaged on the tissue undergoing the operation. A diaphragm is arranged in the optical path of the laser and defines the illuminated region of the tissue. The diaphragm includes a slit which has a fixed angular alignment and an adjustable length and width. Further, an optical rotary device is provided which rotates the beam about an optical axis in between the slit and the tissue undergoing the operation.
    Type: Grant
    Filed: September 13, 1989
    Date of Patent: March 19, 1991
    Assignee: Aesculap AG
    Inventors: Eckhard Schroder, Reinhardt Thyzel
  • Patent number: 5000560
    Abstract: A coupling mirror (13) for coupling in a laser beam (14) is located in the optical axis of a slit illumination (4,7). A pair of prisms (11) is provided between this coupling mirror 913) and the tube objective (9) of the illumination tube (1), this pair of prisms spliting the light beam of the slit illumination up into two partial beams (12) situated at the side of the coupling mirror (13). As well the slit illumination as the laser beam are focused in a place (16) in the eye by a front objective (15). This design allows the use of a conventional illumination tube which may be rotated together with the slit diaphragm (7) in order to change the direction of the slit image in the eye. For all angular positions of the slit diaphragm a good brightness of the slit illumination is hereby achieved.
    Type: Grant
    Filed: April 13, 1989
    Date of Patent: March 19, 1991
    Assignee: Haag-Streit AG
    Inventors: Stephan Papritz, Eckhard Schroder
  • Patent number: 4772116
    Abstract: A device is described for the integration of operating light and of monitoring and/or target light into an ocular examination instrument, for example a split lamp instrument, whose lamp and monitoring instrument can be rotated through a vertical axis drawn through the eye to be examined.In the device according to this invention the operating light beam and the monitoring and/or target light beam are directed in a strictly coaxial relationship. The coaxial light beams are first introduced into the axis of the split lamp designed as a concave axis, then deflected by a first optical apparatus out of the revolution axis in an almost vertical direction into the holder of the monitoring instrument and in this holder are deflected almost parallel to the revolution axis and finally integrated into the beam path of the monitoring instruments outside the revolution axis by a third optical apparatus.
    Type: Grant
    Filed: November 18, 1987
    Date of Patent: September 20, 1988
    Assignees: Meditec Reinhardt Thyzel GmbH, Optische Werke G. Rodenstock
    Inventors: Eckhard Schroder, Karl-Heinz Wilms
  • Patent number: 4740979
    Abstract: Apparatus for preventing deposition of dye on laser apparatus elements comprises a device for vacuum removal of dye vapor from a dye jet in the dye circuit of the laser.
    Type: Grant
    Filed: March 14, 1986
    Date of Patent: April 26, 1988
    Assignee: Meditec Reinhardt Thyzel GmbH
    Inventor: Eckhard Schroder
  • Patent number: 4733400
    Abstract: A control system for a dye laser is described, in which a pump pumps the dye from a supply vessel into a pressure vessel, in which there is an air pocket for damping vibrations, fluctuations in the pump delivery, etc. The dye passes out of the supply vessel as a jet via a nozzle. At least one sensor measures the dye filling level in the supply vessel and a control switches off the dye laser when the level in the supply vessel does not drop to the correct value after switching on the laser. The control system of the invention prevents the switching on of the laser if the level is too high or low before putting the laser into operation.
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: March 22, 1988
    Assignee: Reinhardt Thyzel
    Inventors: Reinhardt Thyzel, Eckhard Schroder
  • Patent number: 4702245
    Abstract: A pulsed laser for medical application and particularly for ophthalmological treatment is described.The laser beam pulse has a clearly defined polarization plane. By rotating a polarization splitter cube, it is possible to regulate the energy of the laser beam pulse.Following each rotation of the polarization splitter cube, and prior to the following treatment pulse, a control system releases a test pulse. The energy of the test pulse is measured while the shutter closes the treatment beam path.According to a preferred embodiment, the laser is a neodymium-YAG laser.
    Type: Grant
    Filed: June 27, 1985
    Date of Patent: October 27, 1987
    Assignee: Meditec-Reinhardt Thyzel GmbH
    Inventors: Eckhard Schroder, Reinhardt Thyzel
  • Patent number: 4652092
    Abstract: A neodymium-YAG laser is described, which can be used for ophthalmological treatment. The laser has a laser beam guide, in which the laser beam is guided as a parallel beam over a long distance and following the latter is focused onto the operating plane by a focusing optics.According to the invention, an afocal system with a plurality of optical components is placed in the parallel optical path at a distance of more than approximately 50 cm from the focusing optics. This afocal optical system substantially does not influence the beam in its normal position. As a result of an optical component in the afocal system, which is displaceable, it is possible to vary the angle of the marginal beams of the focused beam.According to the preferred embodiment, the afocal system has two single lenses, whereof one has a positive and the other a negative refractive power and one is displaceable.
    Type: Grant
    Filed: June 27, 1985
    Date of Patent: March 24, 1987
    Assignee: Meditec-Reinhardt Thyzel GmbH
    Inventors: Eckhard Schroder, Reinhardt Thyzel
  • Patent number: 3980182
    Abstract: A workpiece handling device for a machine tool having at least one work station disposed on the frame of the machine tool, wherein workpieces are held in workpiece holders during machining comprises a transfer means and a feeding means. The transfer means has a plurality of engaging means defining a plurality of positions along a first axis. A feeding means has two rows of engaging means formed in a plurality of columns. The rows are parallel to the first axis and the columns have parallel axis which interest the first axis and the centerline axis of a respective one of the work stations. The transfer means and the feeding means move in an alternating reciprocal manner to transfer the workpieces from a feeding station where workpieces are inserted, through the machine work stations, to a discharge station where the machined workpiece is ejected and back to the feed station in a cyclical manner.
    Type: Grant
    Filed: September 12, 1974
    Date of Patent: September 14, 1976
    Assignee: Oswald Forst Maschinenfabrik und Apparatebauanstalt
    Inventors: Gustav Esser, Eckhard Schroder
  • Patent number: 3976360
    Abstract: The invention relates to a deflection prism arrangement for the formation of a dot pattern for digital electro-optical light deflectors, e.g. laser light deflectors, in which the prism angle of each of the sequence of prisms is doubled, the prism apex angle of the double-refracting prisms with larger prism angles being intersected in such a way by the plane in which optic axis of the prism is disposed, which axis is perpendicular to the system axis, that the two partial angles formed with the optic axis of the relevant prism have a ratio between approximately 2/3 and 3/4.
    Type: Grant
    Filed: October 29, 1974
    Date of Patent: August 24, 1976
    Assignee: U.S. Philips Corporation
    Inventor: Eckhard Schroder
  • Patent number: 3941456
    Abstract: A device is described for reducing the granulation during the transmission of optical information with a highly coherent radiation beam. The device includes a first objective system, a radiation-diffusing element disposed in the image plane thereof, a second objective system and a radiation refracting element of a medium whose refractive property is variable under the influence of an ultrasonic wave.
    Type: Grant
    Filed: March 25, 1974
    Date of Patent: March 2, 1976
    Assignee: U.S. Philips Corporation
    Inventors: Wolfram Schilz, Manfred Rahlff, Uwe Jurgen Schmidt, Klaus Gottfried Plass, Eckhard Schroder