Robert Boschgmbh

Trumpf Photonic Components Gmbh

Johannes Meyer

Thomas Alexander Schlebusch

Klaus Baur

Andreas Petersen

Hans Spruit

Johannes Fischer

Maik Hansen

Marcel Mayer

Thomas Schmidt

Juergen Seiz

Werner Soergel

Andreas M Pietsch

Jochen Hellmig

Osama Khan

Martin Nezadal

Stephan Gronenborn

Thomas Binzer

Juergen Hasch

Matthias Steinhauer

Andreas Kugler

Alexander Herrmann

Hartmut Kittel

Carsten Potratz

Alexander Fischer

Mehran Pourmousavi

Matthias Falk

Mekdes Girma

Stephan Bannwarth

Stefan Gering

Wolfgang Hafla

Patrick Schlachter

A method for determining a direction of gaze of an eye for data glasses. The method includes: reading distance values and speed values, which represent a distance between laser sensors for emitting laser beams and surface intersection points of the laser beams on the eye and also surface speeds at the surface intersection points; classifying the distance values and the speed values in order to obtain classification values which indicate the parts of the eye associated with the surface intersection points; estimating position values which represent positions of the laser sensors using the distance values, the speed values, and the classification values; and ascertaining a gaze direction value which represents the gaze direction using the position values, the distance values, and the speed values.

Method and device for determining a direction of gaze of an eye and data glasses

A method for a pupil detection and/or pupil tracking with the aid of an evaluation of a speckle pattern back-reflected by an eye of a light of an infrared laser irradiated into the eye. At least the light of the infrared laser irradiated into the eye is scanned via a holographic optical element that includes different refractive structures, the different refractive structures being configured in such a way that they each generate a different visual defect correction.

Method for a pupil detection and/or pupil tracking, optical system and smart glasses

A laser sensor includes a laser source configured to emit a laser beam, and optics configured to project the laser beam as a one- or two-dimensional patterned laser beam onto an object to be examined, such that a distance of the patterned laser beam from the laser source varies along the patterned laser beam projected on the object. The laser sensor further includes a detector configured to determine a self-mixing interference signal generated by laser light of the patterned laser beam reflected from the object back into the laser source, and circuitry configured to analyze a spectrum of the self-mixing interference signal and extract from the spectrum of the self-mixing interference signal multiple frequencies that are indicative of at least one of the following: multiple distances along the patterned laser beam from the laser source, or multiple velocities along the patterned laser beam with respect to the laser source.

Laser sensor, system and method for self-mixing interferometry

A method is provided for operating smart glasses including a virtual retinal display. In at least one method step, in particular a calibration step, a pupil size characteristic curve is generated in a user-specific manner in that a plurality of pupil sizes of a user eye are ascertained in the case of calibration images of different brightnesses generated by the virtual retinal display. In at least one further method step, at least one present pupil diameter of the user eye of the user of the smart glasses is determined using the pupil size characteristic curve.

Method for operating smart glasses including a virtual retinal display, processing unit, and smart glasses

An optical system for a virtual retina display and a gesture detection of a user of the virtual retina display. The optical system includes a projector unit, an image source, and an image processing unit. The projector unit includes a first, second, and a third light source, and a first controllable deflection unit for scanning deflection of first, second, and third light beams. The optical system further includes a second deflection unit designed to transmit the first and second scanned light beams and to deflect the third light beam into a gesture detection area of the user. The optical system further includes a deflection unit, onto which the image content is projectable and which is configured to direct the projected image content and the second light beam onto an eye of a user.

Optical system for a virtual retina display and a gesture detection of a user of the virtual retina display

A radar sensor having at least one antenna structure and at least one coupling structure, which is designed to couple substrate waves out of an antenna substrate used as a carrier for the antenna structure and the coupling structure, and to emit them as coupled waves into an emission region. The radar sensor has an absorber which is situated in the emission region in order to absorb the coupled waves.

Radar sensor

A method for determining an eye position using a laser device for a set of smart glasses. The method includes emitting light for scanning an eye along at least one scan line; detecting a plurality of reflection beams of the light reflected along the scan line in order to obtain a plurality of light intensity values, the light intensity values representing intensities of the reflection beams; generating a two-dimensional image of the eye along the scan line using the light intensity values, a high light intensity value being assigned or being assignable to a reflection beam reflected at the retina and a light intensity value low in comparison to the high intensity value being assigned or being assignable to a reflection beam reflected outside the retina of the eye; and determining the eye position of the eye within the image using amplitudes of the light intensity values.

Method and device for determining an eye position using a laser device for a set of smart glasses and laser device

A method for determining a current viewing direction of a user of a pair of data glasses having a virtual retina scan display. The method includes at least the method steps: projecting at least substantially parallel infrared laser beams onto an eye of a user of the data glasses, acquiring two-dimensional images from the infrared laser beams reflected back by the eye of the user, and determining pupil contours in the acquired two-dimensional images. The instantaneous viewing direction of the user of the data glasses is ascertained from a comparison of an instantaneous elliptical shape of the pupil contour with an elliptical shape of a reference pupil contour.

Method for determining a current viewing direction of a user of data glasses with a virtual retina display and data glasses

A method for a user activity recognition for data glasses. The data glasses include at least one integrated sensor unit. An activity of a user of the data glasses is recognized, via an evaluation of data that are detected by the integrated sensor unit, in at least one user activity recognition step carried out by a classifying unit. It is provided that when the user activity recognition step is carried out, the classifying unit takes into account information that has been ascertained in a (preferably) user-specific training step chronologically preceding the user activity recognition step, by training the classifying unit.

Method for a user activity recognition for data glasses, and data glasses

A circuit board for radar sensors including a substrate having a topside and a lower surface. The circuit board has at least one antenna device, which is situated on the topside of the substrate and is developed out of a metal layer. In addition, the circuit board has a fill structure situated on the topside of the substrate, which is developed out of the metal layer. The fill structure is situated at a distance from the antenna device in a surface region of the topside of the substrate, the surface region not being taken up by the antenna device. The fill structure has no electrical connection to the antenna device. The surface utilization of the fill structure amounts to between 50% and 300% of that of a surface utilization of the antenna device.

Circuit board for radar sensors having a metallic fill structure, and method for producing a circuit board for radar sensors having a metallic fill structure

A method for recognizing a state of an eye for a laser device. The method includes reading in an eye parameter using the laser device, which represents a movement of the eye. The eye parameter is compared with a first and/or with a second reference parameter in order to obtain a comparison result. A type of movement of the eye is determined using the comparison result, which represents a saccadic eye movement when the eye parameter has a greater value than the first reference parameter. The type of movement represents a smooth eye movement when the eye parameter has a value which corresponds to the second reference parameter and at most to the first reference parameter. A viewing direction is ascertained as a function of the determined type of movement.

Method and device for recognizing a viewing direction and/or a state of an eye using a laser device and laser device

A method for operating a laser unit as a function of a detected state of an object. The method includes: outputting a light beam having a light beam intensity, using the laser unit, during a first time period and a second time period; receiving at least one reflected partial beam having a partial beam intensity during the first and second time periods; making the light beam and the partial beam interfere with each other in the first and second time periods to obtain a first interference parameter for the first time period and a second interference parameter for the second time period; ascertaining the state of the object; changing an operating state of the laser unit as a function of the ascertained state of the object.

Method and device for operating a laser unit as a function of a detected state of an object, and laser device

A method for operating smart glasses includes an input unit and/or output unit and a gaze detection arrangement, wherein the gaze detection arrangement detects any eye movement of an eye including the steps of irradiating at least one wavelength-modulated laser beam to the eye, detecting an optical path length of the emitted laser beam based on laser feedback interferometry of the emitted laser radiation with backscattered radiation from the eye, detecting a Doppler shift of the emitted and backscattered radiation based on the laser feedback interferometry, and detecting an eye velocity based on the Doppler shift, and wherein the input unit and/or output unit is operated based on the optical path length and/or the eye velocity.

Method for operating a pair of smart glasses

A method for detecting a gaze direction of an eye includes the steps of irradiating at least one wavelength-modulated laser beam onto an eye, detecting an optical path length of the emitted laser beam based on laser feedback interferometry of the emitted laser radiation with a backscattered radiation from the eye, detecting a Doppler shift of the emitted radiation and the backscattered radiation based on the laser feedback interferometry, detecting an eye velocity based on the Doppler shift, and detecting an eye movement of the eye based on the optical path length and the eye velocity.

Method for detecting a gaze direction of an eye

An antenna device for a radar sensor, including: at least one first antenna array that is situated on a surface of a substrate and that includes a defined number of planar antenna elements connected in series; at least one second antenna array that is situated on the surface of the substrate and that includes a defined number of planar antenna elements connected in series; a feed line that is connected at the center of each of the two antenna arrays; with the aid of the feed line a feed signal being feedable into the antenna array in such a way that a feed signal that is phase-shifted by 180 degrees with respect to the second antenna array is suppliable to the first antenna array.

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Boeblingen, Germany

Johannes Meyer