Patents by Inventor Juergen Ledermann

Juergen Ledermann 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: 10744037
    Abstract: A polarization beam splitter selectively decouples detection light onto a detector such that it has a polarization direction that differs from the emitted illumination light. This enables the detection of the light scattered back in the eye lens at a high level of accuracy, since stray light from reflections at optical components of the light path is suppressed. In the generating of photo disruptions or other incisions, the ray exposure of the retina may be reduced in that the incisions being furthest away from the laser are induced first such that laminar gas inclusions with an existence duration time of at least 5 seconds result. In this manner the laser radiation propagated in the direction of the retina in further incisions are scattered and partially reflected such that the influence impinging upon the retina is reduced.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: August 18, 2020
    Assignee: Carl Zeiss Meditec AG
    Inventors: Matthias Reich, Dieter Grebner, Andreas Koch, Juergen Ledermann, Manfred Dick, Marco Hanft
  • Publication number: 20190192346
    Abstract: A polarization beam splitter selectively decouples detection light onto a detector such that it has a polarization direction that differs from the emitted illumination light. This enables the detection of the light scattered back in the eye lens at a high level of accuracy, since stray light from reflections at optical components of the light path is suppressed. In the generating of photo disruptions or other incisions, the ray exposure of the retina may be reduced in that the incisions being furthest away from the laser are induced first such that laminar gas inclusions with an existence duration time of at least 5 seconds result. In this manner the laser radiation propagated in the direction of the retina in further incisions are scattered and partially reflected such that the influence impinging upon the retina is reduced.
    Type: Application
    Filed: December 18, 2018
    Publication date: June 27, 2019
    Inventors: Matthias REICH, Dieter GREBNER, Andreas KOCH, Juergen LEDERMANN, Manfred DICK, Marco HANFT
  • Patent number: 10182942
    Abstract: A polarization beam splitter selectively decouples detection light onto a detector such that it has a polarization direction that differs from the emitted illumination light. This enables the detection of the light scattered back in the eye lens at a high level of accuracy, since stray light from reflections at optical components of the light path is suppressed. In the generating of photo disruptions or other incisions, the ray exposure of the retina may be reduced in that the incisions being furthest away from the laser are induced first such that laminar gas inclusions with an existence duration time of at least 5 seconds result. In this manner the laser radiation propagated in the direction of the retina in further incisions are scattered and partially reflected such that the influence impinging upon the retina is reduced.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: January 22, 2019
    Assignee: Carl Zeiss Meditec AG
    Inventors: Matthias Reich, Dieter Grebner, Andreas Koch, Juergen Ledermann, Manfred Dick, Marco Hanft
  • Publication number: 20150133902
    Abstract: A polarization beam splitter selectively decouples detection light onto a detector such that it has a polarization direction that differs from the emitted illumination light. This enables the detection of the light scattered back in the eye lens at a high level of accuracy, since stray light from reflections at optical components of the light path is suppressed. In the generating of photo disruptions or other incisions, the ray exposure of the retina may be reduced in that the incisions being furthest away from the laser are induced first such that laminar gas inclusions with an existence duration time of at least 5 seconds result. In this manner the laser radiation propagated in the direction of the retina in further incisions are scattered and partially reflected such that the influence impinging upon the retina is reduced.
    Type: Application
    Filed: December 15, 2014
    Publication date: May 14, 2015
    Inventors: Matthias REICH, Dieter GREBNER, Andreas KOCH, Juergen LEDERMANN, Manfred DICK, Marco HANFT
  • Patent number: 8911431
    Abstract: A polarization beam splitter selectively decouples detection light onto a detector such that it has a polarization direction that differs from the emitted illumination light. This enables the detection of the light scattered back in the eye lens at a high level of accuracy, since stray light from reflections at optical components of the light path is suppressed. In the generating of photo disruptions or other incisions, the ray exposure of the retina may be reduced in that the incisions being furthest away from the laser are induced first such that laminar gas inclusions with an existence duration time of at least 5 seconds result. In this manner the laser radiation propagated in the direction of the retina in further incisions are scattered and partially reflected such that the influence impinging upon the retina is reduced.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: December 16, 2014
    Assignee: Carl Zeiss Meditec AG
    Inventors: Matthias Reich, Dieter Grebner, Andreas Koch, Juergen Ledermann, Manfred Dick, Marco Hanft
  • Patent number: 8597283
    Abstract: An ophthalmologic laser system and an operating method. The laser system includes a laser, a scanner unit, a focusing lens and a beam splitter that directs radiation that reaches the beam splitter from the direction of the area of examination through a confocal aperture orifice onto a detector. The invention also includes a control unit with which a cornea arranged in the examination area can be irradiated by the laser at illumination laser power and detection light can be registered by the detector. The cornea is scanned in three dimensions, in that the cornea is irradiated at multiple points and detection light is registered from there. Based on the detection light, a laser cut in the cornea is identified and the form and/or position of the laser cut calculated. The invention further relates to refractive laser surgery.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: December 3, 2013
    Assignee: Carl Zeiss Meditec AG
    Inventors: Mark Bischoff, Manfred Dick, Juergen Ledermann
  • Publication number: 20110264081
    Abstract: A polarization beam splitter selectively decouples detection light onto a detector such that it has a polarization direction that differs from the emitted illumination light. This enables the detection of the light scattered back in the eye lens at a high level of accuracy, since stray light from reflections at optical components of the light path is suppressed. In the generating of photo disruptions or other incisions, the ray exposure of the retina may be reduced in that the incisions being furthest away from the laser are induced first such that laminar gas inclusions with an existence duration time of at least 5 seconds result. In this manner the laser radiation propagated in the direction of the retina in further incisions are scattered and partially reflected such that the influence impinging upon the retina is reduced.
    Type: Application
    Filed: June 4, 2009
    Publication date: October 27, 2011
    Applicant: CARL ZEISS MEDITEC AG
    Inventors: Matthias Reich, Dieter Grebner, Andreas Koch, Juergen Ledermann, Manfred Dick, Marco Hanft
  • Publication number: 20110224658
    Abstract: An ophthalmologic laser system and an operating method. The laser system includes a laser, a scanner unit, a focusing lens and a beam splitter that directs radiation that reaches the beam splitter from the direction of the area of examination through a confocal aperture orifice onto a detector. The invention also includes a control unit with which a cornea arranged in the examination area can be irradiated by the laser at illumination laser power and detection light can be registered by the detector. The cornea is scanned in three dimensions, in that the cornea is irradiated at multiple points and detection light is registered from there. Based on the detection light, a laser cut in the cornea is identified and the form and/or position of the laser cut calculated. The invention further relates to refractive laser surgery.
    Type: Application
    Filed: November 4, 2009
    Publication date: September 15, 2011
    Applicant: CARL ZEISS MEDITEC AG
    Inventors: Mark Bischoff, Manfred Dick, Juergen Ledermann
  • Patent number: 7810927
    Abstract: A solution by which an examination of the cornea for possible encapsulations, air bubbles, or other irregularities following a refractive surgery can be carried out directly at the treatment device instead of the patient having to be transferred to an examination device. The additional slit illumination system includes two slit projector units substantially symmetrically mounted at an angle of about 40° to the optical axis of the refractive treatment device, and fixed and focused on the eye of the patient to be examined. The slit projector units include a light source, a projection optical system, and beam forming and/or conducting optical components. Although intended for surgical microscopes, it can also be used for other opthalmologic treatment devices that would benefit from a slit projection system for the examination before, during, or after the treatment procedure.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: October 12, 2010
    Assignee: Carl Zeiss Meditec AG
    Inventors: Gerard Antkowiak, Marco Hanft, Elke Ebert, Karsten Festag, Juergen Ledermann
  • Publication number: 20080269729
    Abstract: The invention concerns an uninterruptible power supply that is used in particular with a refractive laser. A rechargeable battery is provided, whereby prior to beginning the treatment the capacity of the battery is tested to assure that it is sufficient to safely complete the treatment in the event the voltage supply is interrupted.
    Type: Application
    Filed: April 9, 2008
    Publication date: October 30, 2008
    Applicant: CARL ZEISS MEDITEC AG
    Inventor: Juergen Ledermann
  • Publication number: 20080123051
    Abstract: A solution by which an examination of the cornea for possible encapsulations, air bubbles, or other irregularities following a refractive surgery can be carried out directly at the treatment device instead of the patient having to be transferred to an examination device. The additional slit illumination system includes two slit projector units substantially symmetrically mounted at an angle of about 40° to the optical axis of the refractive treatment device, and fixed and focused on the eye of the patient to be examined. The slit projector units include a light source, a projection optical system, and beam forming and/or conducting optical components. Although intended for surgical microscopes, it can also be used for other opthalmologic treatment devices that would benefit from a slit projection system for the examination before, during, or after the treatment procedure.
    Type: Application
    Filed: November 8, 2007
    Publication date: May 29, 2008
    Applicant: CARL ZEISS MEDITEC AG
    Inventors: Gerard Antkowiak, Marco Hanft, Elke Ebert, Karsten Festag, Juergen Ledermann