Carl Zeiss Meditec Ag

Carl Zeiss Ag

Carl Zeiss Surgical Gmbh

Carl Zeiss Smt Gmbh

Carl Zeiss Industrielle Messtechnik Gmbh

Carl Zeiss Vision International Gmbh

Carl Zeiss Sms Ltd.

Carl Zeiss Meditec Gmbh

Markus Seesselberg

Christoph Hauger

Peter Reimer

Marco Wilzbach

Keith E O'Hara

Martin Hacker

Alfons Abele

Xing Wei

Joachim Steffen

Artur Hoegele

Christoph Kuebler

Holger Matz

Tobias Breuninger

Anja Seiwert

Oliver Findl

Nino Hirnschall

Hans-Juergen Dobschal

David R Shafer

Thomas Engel

Johannes Ruoff

Daniel Bublitz

Aksel Goehnermeier

Vladimir Dmitriev

Christoph Nieten

Marco Pretorius

Enrico Geissler

Christian Voigt

Hans-Joachim Weippert

Norbert Kerwien

Frank Widulle

Yue Qiu

Joachim Welte

Dieter Quendt

Matthias Kubitza

Erez Graitzer

Christopher Weth

Steffen Siegler

Uri Stern

Andrè Mueller

Fumio Takanashi

Jochen M Horn

Friedrich Daniel Werdehausen

Tomer Cohen

Yue Qui

A lens for a camera has a longitudinal axis, a focal length, an installation length in the direction of the longitudinal axis of less than 10 mm, a plurality of refractive optical elements and a stop with a maximum diameter. The focal length of the lens can be in the range of 25 mm to 6 mm, and the ratio of focal length to maximum diameter of the stop can be in the range of 1.4 to 8. At least one refractive optical element can be formed of a material with an Abbe number for which the absolute value of the difference between relative partial dispersion of the material and a normal relative partial dispersion at the Abbe number of the material is at least 0.05.

Compact telephoto lens having materials with anomalous relative partial dispersion

An optical system includes a scanning unit, a first lens-element group including at least a first lens element, and a focusing unit which is designed to focus beams onto a focus, wherein the focusing unit includes a second lens-element group including at least a second lens element and an imaging lens. The imaging lens further includes a pupil plane and a wavefront manipulator. The wavefront manipulator is arranged in the pupil plane of the imaging lens or in a plane that is conjugate to the pupil plane, or the scanning unit of the optical system is arranged in a plane that is conjugate to the pupil plane and the wavefront manipulator is arranged upstream of the scanning unit in the light direction. The focus of the second lens-element group lies in the pupil plane of the imaging lens in all focal positions of the focusing unit.

Optical system and method for correcting mask defects using the system

An ophthalmic surgical microscope includes a main objective lens, through which an observation beam path passes, and a confocal optical system configured as a refractometer to determine the refraction of an eye. The optical system includes a measurement light source to generate a measurement light beam, a light detector to measure an intensity of measurement light and an optical unit to direct the measurement light beam onto the retina of the eye and to return measurement light reflected back at the retina to the light detector. The optical system includes an adaptive optical module (AOM) to modify a wavefront of the measurement beam path such that an intensity of the back-reflected measurement light changes. A spherical equivalent (SE) of the ametropia of the eye is determined based on a setting of the AOM, at which the measured intensity of the back-reflected measurement light has a maximum.

Ophthalmic surgical microscope

An apparatus for carrying out an eye-related measurement on a person includes a device for generating a fixation target with a holographic element. To generate the fixation target, the holographic element is illuminated by a light source. As a result of the illumination, the fixation target arises as a virtual holographic object. The eye-related measurement is conducted on an eye or the eyes of the person fixating the fixation target. Information is conveyed to the person by switching between different fixation targets.

Apparatuses and methods for carrying out eye-related measurements

A method of determining at least one selection parameter for selecting an intraocular lens to be inserted into an eye; the method comprises reading, by a data processing system, data indicative of an axial position of at least a portion of an anterior surface of an at least partially empty capsular bag of the eye, relative to an optical axis of the eye. The method further comprises determining an axial position parameter, which is representative of the axial position of the portion of the anterior surface, depending on the data. The method further comprises determining the at least one selection parameter for selecting the intraocular lens depending on the determined position parameter.

Method, ophthalmic measuring systems and computer-readable storage medium for selecting an intraocular lens

An apparatus for determining ametropia of an eye includes an optical assembly with a light source, a detector, a plurality of optical elements and at least one stray light stop and a controller. An illumination beam path is provided between the light source and an optical interface in order to allow illumination light generated by the light source to emerge from the optical interface. A measurement beam path is provided between the optical interface and the detector in order to supply measurement light entering through the optical interface to the detector. The measurement beam path passes through an aperture of the at least one stray light stop. A diameter of this aperture is variable or a position of this aperture along the measurement beam path is variable in order to reduce stray light at the detector.

Apparatus for determining ametropia of an eye

An ophthalmic surgical apparatus including: a control device; a user interface which, at least intermittently, has data communication with the control device; a first measuring device configured for determining at least one value intraoperatively, the value being characteristic for an eye to be treated by surgery; a second measuring device configured for determining at least one value preoperatively and/or intraoperatively, the value being characteristic for the eye to be treated by surgery, and including a first computing unit which is suitable and intended, using the value determined intraoperatively and the value determined preoperatively and/or intraoperatively, for ascertaining at least one first output value which is characteristic for at least one intraocular lens to be selected, wherein the user interface at least preferably includes an output device suitable for outputting the output value or a value derived therefrom.

Ophthalmic surgical apparatus for inserting intraocular lenses in eyes

Method, ophthalmic measuring system and computer-readable storage medium for selecting an intraocular lens

Imaging systems are provided allowing examination of different object regions spaced apart in a depth direction by visual microscopy and by optical coherence tomography. An axial field of view and a lateral resolution is varied depending on which object region is examined by the imaging system. The proposed imaging systems are in particular applicable for thorough examination of the human eye.

Imaging system

An imaging system with an imaging lens system for imaging an object into an image plane is disclosed. The imaging lens system contains an optical component for a higher depth of field, of which the refractive power is alterable and the optical effect remains rotation-symmetrical.

Imaging system and imaging method

A visualization apparatus for a surgical site includes a recording unit for recording an image of an object arranged in a focal plane of the recording unit. The recording unit has a lens having an optical axis that intersects the focal plane at a point P. An electronic image representation unit has an image surface for reproducing the recorded image and point P is reproduced at image point P'. A mirror unit has a mirror surface, which has a center point S and is arranged relative to the image surface such that the reproduced image is reflected by the mirror surface. The focal plane, image surface and mirror surface are arranged relative to one another such that an observation point B results for which the following applies:&#x2212;2 D&#x3c;&#x3a6;1&#x2212;&#x3a6;2&#x3c;+2 D;wherein:&#x3a6;1=&#x2212;1/d&#x3a6;2=&#x2212;1/dd=distanced=distance+distance.

Visualization apparatus for a surgical site

An eye surgery microscopehaving an illumination beam pathfor imaging a portion of an eyeof a patient and a measurement beam pathfor measuring an ametropia of the eye. The microscope comprises an objective lenshaving an objective planein which the eye of the patient is disposable; at least one ocularor a camerafor generating and detecting an image of the object plane, respectively; a measurement light source for generating a measurement light beam; a measurement modulehaving a light detector; optics traversed by the measurement beam path for directing the measurement light beam onto the retinaof the eye of the patient and for providing measurement lightreflected at the retina to the measurement module; and a controller; wherein the measurement module and the controller are configured to determine a position of an image of the retina generated by the optics along the measurement beam path and to output a measurement value representing the ametropia of the eye of the patient.

Eye surgery microscope having an entity for measuring an ametropia

A method of operating an eye surgery system comprises operating actuators of a stand such that an apparatus for measuring the refraction of an eye is located in a measurement position relative to the eye; measuring at least one condition of the eye and determining at least one condition value representing the at least one measured condition of the eye; measuring the refraction of the eye and determining at least one refraction value presenting the measured refraction of the eye, wherein a time distance between the measuring of the condition of the eye and the measuring of the refraction of the eye is smaller than a predetermined duration; and outputting the at least one refraction value representing the measured refraction of the eye only when the condition value representing the measured condition of the eye is within a predetermined range of values.

Eye surgery system and method of operating an eye surgery system

Growing community of inventors

Aalen, Germany

Markus Seesselberg