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).
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Patent number: 10744037Abstract: 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: GrantFiled: December 18, 2018Date of Patent: August 18, 2020Assignee: Carl Zeiss Meditec AGInventors: Matthias Reich, Dieter Grebner, Andreas Koch, Juergen Ledermann, Manfred Dick, Marco Hanft
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Publication number: 20190192346Abstract: 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: ApplicationFiled: December 18, 2018Publication date: June 27, 2019Inventors: Matthias REICH, Dieter GREBNER, Andreas KOCH, Juergen LEDERMANN, Manfred DICK, Marco HANFT
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Patent number: 10182942Abstract: 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: GrantFiled: December 15, 2014Date of Patent: January 22, 2019Assignee: Carl Zeiss Meditec AGInventors: Matthias Reich, Dieter Grebner, Andreas Koch, Juergen Ledermann, Manfred Dick, Marco Hanft
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Publication number: 20150133902Abstract: 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: ApplicationFiled: December 15, 2014Publication date: May 14, 2015Inventors: Matthias REICH, Dieter GREBNER, Andreas KOCH, Juergen LEDERMANN, Manfred DICK, Marco HANFT
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Patent number: 8911431Abstract: 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: GrantFiled: June 4, 2009Date of Patent: December 16, 2014Assignee: Carl Zeiss Meditec AGInventors: Matthias Reich, Dieter Grebner, Andreas Koch, Juergen Ledermann, Manfred Dick, Marco Hanft
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Patent number: 8597283Abstract: 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: GrantFiled: November 4, 2009Date of Patent: December 3, 2013Assignee: Carl Zeiss Meditec AGInventors: Mark Bischoff, Manfred Dick, Juergen Ledermann
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Publication number: 20110264081Abstract: 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: ApplicationFiled: June 4, 2009Publication date: October 27, 2011Applicant: CARL ZEISS MEDITEC AGInventors: Matthias Reich, Dieter Grebner, Andreas Koch, Juergen Ledermann, Manfred Dick, Marco Hanft
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Publication number: 20110224658Abstract: 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: ApplicationFiled: November 4, 2009Publication date: September 15, 2011Applicant: CARL ZEISS MEDITEC AGInventors: Mark Bischoff, Manfred Dick, Juergen Ledermann
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Patent number: 7810927Abstract: 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: GrantFiled: November 8, 2007Date of Patent: October 12, 2010Assignee: Carl Zeiss Meditec AGInventors: Gerard Antkowiak, Marco Hanft, Elke Ebert, Karsten Festag, Juergen Ledermann
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Publication number: 20080269729Abstract: 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: ApplicationFiled: April 9, 2008Publication date: October 30, 2008Applicant: CARL ZEISS MEDITEC AGInventor: Juergen Ledermann
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Publication number: 20080123051Abstract: 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: ApplicationFiled: November 8, 2007Publication date: May 29, 2008Applicant: CARL ZEISS MEDITEC AGInventors: Gerard Antkowiak, Marco Hanft, Elke Ebert, Karsten Festag, Juergen Ledermann