Carl Zeiss Ag

Carl Zeiss Vision Gmbh

Carl-zeiss-stiftung Trading As Carl Zeiss

Carl-zeiss-stiftung Trading As

Carl Zeiss Industrielle Messtechnik Gmbh

Frank Höller

Oliver Schmidt

Peter Westphal

Jan Horn

Bernd Spruck

Herbert Krug

Cristina Alvarez Diez

Martin Ross-Messemer

Matthias Kubitza

Manfred Weihnacht

Thomas Wollweber

Holger Wegendt

Christian Koos

Hagen Schmidt

Alexander Menck

Marc Tremont

Günter Martin

Jurgen Werner

Edward Gumbrell

Michael Spieweck

Kurt Franke

Christoph-Hilmar Graf Vom Hagen

Kerstin Winkler

Felix Koch

A method for operating a LIDAR system with at least one spectrally tunable light source emitting a light beam having a temporally varying frequency and a transparent protective shield, arranged in a light path of the light beam, protecting the LIDAR system against environmental pollution includes determining distance values of an object based on beat frequencies of beat signals resulting from a superposition of partial signals obtained from partial reflection of the light beam at the object with reference signals not reflected at the object. Each distance value is determined from a peak in a signal spectrum obtained on the basis of a Fourier transformation of the beat signal. A degree of soiling of the protective shield is diagnosed by analyzing the signal spectrum in a predefined analysis frequency range. An upper limit frequency bounding said analysis frequency range is based on a distance of the protective shield.

Method for operating a LIDAR system

A device for two-dimensionally scanning beam deflection of a light beam has spectrally tunable light source that emits a light beam having a time-varying wavelength. The device further comprises a first optical component that produces a first beam deflection. The first beam deflection causes the light beam to be deflected wavelength-dependently in a first direction. A second optical component produces a second beam deflection which causes the light beam to be deflected in a second direction different to the first direction. The second optical component comprises a prism pair comprising two prisms that are rotatably arranged successively in a beam path of the light beam. The two prisms are configured to perform continuous counter-rotational movements.

Device for the two-dimensionally scanning beam deflection of a light beam

A measuring unit is set up to determine a relative position and relative orientation between the measuring unit and an arrangement of at least three optical elements. The measuring unit comprises a length measuring device, which emits measuring beams at at least three locations spaced apart from one another, and at least one beam directing device set up to direct the measuring beams to optical elements of the arrangement. The beam directing device is controllable in order to guide at least one of the measuring beams to a plurality of optical elements of the arrangement in a time-sequential manner in order to carry out a plurality of length measuring operations in a time-sequential manner in such a manner that, in the plurality of length measuring operations, each measuring beam of the at least one measuring beam strikes precisely one of the optical elements. A total of six lengths are measured in this manner.

Measuring unit, measuring system and method for determining a relative position and relative orientation

An apparatus () for determining centering data for eyeglasses () comprises a fixation device () and a recording unit () that can be triggered by a computer, records electronic images, and is disposed behind a divider element (). The fixation device () produces at least one speckle pattern. The speckles can be superposed by different patterns, for example, a cross shape. The invention further relates to a method for determining centering data. The inventive method and apparatus allow to measure for test persons having the most different acuity of vision the relative centering data from a short distance while maintaining their usual posture.

Apparatus and method for determining centering data for spectacles

A system and a method for determining a position of two objects relative to each other is suggested, comprising: a sourceof coherent radiation, a beam guidance for providing a measuring branchfor a measuring beam, which has an optical path length dependent on the position of the two objects, a radiation intensity sensorfor measuring an intensity of an interfering superposition of radiation, which include radiation at least after passing through the measuring branch, and a calculatorwhich responds to a measuring signal from the radiation intensity sensor, in order to detect optical path lengths of the measuring branchand therefrom to detect the position of the two objects relative to each other, wherein the measuring branchincludes: at least one emitter fixedly mountable on a first of the two objects for emitting radiation supplied to the measuring branchin a space between the two objects, at least three retroreflectorsmountable on the second one of the two objects, such that they are arranged at fixed distances relative to each other, and at least one receivermountable on the first of the two objects for receiving radiation reflected back by the retroreflectorsand for supplying the received radiation to the radiation intensity sensor, wherein the emitteremits the radiation into such an angular area that the at least three retroreflectorsare contained therein.

System and method for determining a position or/and orientation of two objects relative to each other as well as beam guiding arrangement, interferometer arrangement and device for changing an optical path length for use in such a system and method

A display device is provided for generating an image which is perceivable, by a viewer (M) of an object located in an object plane (O), as being superimposed on the object, said device comprising an image generating device () for generating the image in an image plane (B) and a superimposing unit (), wherein the image generating device () and the superimposing unit () are mounted on a support device (), which is placeable on the head of the viewer (M), and the image generating device () comprises a focusing unit () by which the distance from the image plane (B) to the support device () is changeable and which includes a lens () having a variable refractive index as well as a control unit () for adjusting the refractive index of the lens (), wherein, when the support device () is placed on the head of the viewer (M), the superimposing unit () effects superposition of the generated image on the object for the viewer (M) and the control unit () adjusts the refractive index of the lens () such that the object plane (O) coincides with the image plane (B).

Display device with electrooptical focussing

A diffraction-optical component for providing a radiation-diffracting grating structure is proposed, comprising a surface wave device including a substrate, a surface wave sourceexcitable with an adjustable frequency for producing surface waves on a surfaceof the substrateand an interaction regionof the substrate surfacewhich is provided for the radiation to interact with a grating structure provided by the surface waves produced. To this end, the surface wave sourcemay have a directional characteristic and emits surface waves stronger in a preferred directionthan in a directionopposite thereto, the surface wave source may comprises an electro-acoustic transducer which includes spaced apart sections for emitting surface waves at different wavelengths, an electro-acoustic transducer of the surface wave source may be operated as a voltage divider with an intermediate electrode, the frequency for exciting the surface wave source may be adjusted in response to a measuring signal which is obtained by a surface wave receiver, a surface wave dampermay be provided in the form of an acousto-electric transducer, a closed propagation path may be provided for the surface waves and the grating structure may be formed by standing surface waves. Moreover, an exposure system is proposed which comprises such a diffraction-optical component and a radiation source.

Diffraction-optical component, illumination system and exposure system comprising such a diffraction-optical component as well as an exposure method employing such an exposure system

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Aalen, Germany

Frank Höller