Sick Ag

Gerhard Merettig

Kai Waslowski

Ingolf Hörsch

Roland Bergbach

Felix Lang

Siegfried Ringwald

Matthias Götz

Philipp Fortenbacher

Rolf Meier

Angelika Hofmann

Jens Elsner

Friedhelm Wiethege

Gunter Leuker

Maximilian Hauske

Thomas Schulz

Fabian Weisenberger

Ralph Tanbourgi

Stefan Jaegle

Matthias Schonstein

Alexander Bohli

Matthias Goetz

Christian Döbele

Stefan Schäfer

Andreas Imhof

Matthias Schönstein

Günter Leuker

Angelika Fetzner

Oliver Opalko

Patrick Auer

An optoelectronic sensor () according to the principle of triangulation for detecting an object () in a monitoring region () comprises a light transmitter () and a spatially resolving light receiver (). A receiving optics () and an optical element () are arranged in front of the light receiver (), wherein the optical element () comprises a converging partial region () and a diverging partial region () and is arranged such that a remitted light bundle () from an object () in a near range of the monitoring region () passes through the converging partial region () and a remitted light bundle () from an object () in a far range of the monitoring region () passes through the diverging partial region ().

Optoelectronic sensor and method for detecting an object

The present invention relates to a triangulation light sensor for the detection of objects on a conveying path having a light transmitter for transmitting transmitted light into a detection zone that extends over a part region of the conveying path, having a light receiver, a reception optics arranged in an optical path between the detection zone and the light receiver, and an evaluation unit that is configured for generating an object detection signal from the received signals.

Triangulation light sensor

An optoelectronic sensor for recognizing objects or object properties comprises a light transmitter for transmitting transmitted light into a detection zone, a light receiver for receiving received light and an evaluation unit which is configured to detect an object located in or projecting into a detection zone and/or to determine a property of such an object with reference to the received light received by the light receiver. The light transmitter comprises a monolithic semi-conductor component having a first light emitting layer and a second light emitting layer, with the first light emitting layer being configured for emitting red light and the second light emitting layer being configured for emitting infrared light, and with the second light emitting layer defining a central light emitting surface and the first light emitting layer defining an outer light emitting surface surrounding the central light emitting surface.

Optoelectronic sensor including a light transmitter with multiple wavelength light transmission comprising a monolithic semiconductor component

An optoelectronic sensor for recognizing object edges of objects comprises at least three light transmitters which are arranged such that at least two different spacings result between two respective light transmitters. For recognizing an object edge, an evaluation unit is configured to carry out a common evaluation of an image taken by a light receiver of a light spot generated by the transmitted light beams of a first light transmitter and of an image taken by a light receiver of a light spot generated by the transmitted light beams of another light transmitter. The pair of light transmitters to be used for the common evaluation can be selected in dependence on a selection criterion from at least two differently spaced apart pairs of light transmitters.

Optoelectronic sensor for recognizing object edges

An optoelectronic sensor for recognizing object edges of objects moved relative to the sensor, has a light transmission device with at least one light transmitter, in particular at least two light transmitters, for generating a respective collimated or focused transmitted light beam. The sensor has at least two light receivers for imaging a light spot produced by the respective transmitted light beam on an object, wherein the two light receivers are arranged on two mutually opposite sides of the light transmission device, and has an evaluation unit which is designed to compare the two reception intensities of the two images of the respective light spot taken by the two light receivers with one another and to evaluate the result of the respective comparison to recognize an object edge.

Optoelectronic sensor for detecting object edges

A triangulation light sensor includes at least one light transmitter for transmitting a light signal into a detection zone, a light receiver having a plurality of receiver elements for receiving light from the detection zone reflected diffusely and/or specularly, and a reception optics arranged between the detection zone and the light receiver in the beam path, with the position of a light spot produced on the light receiver in a triangulation direction by the reflected light resulting in dependence on the distance of the object. The reception optics includes at least one multisegmented lens element having a plurality of lens segments with mutually spaced apart optical axes in the triangulation direction and at least one freeform lens element or one diffractive-optical element having a multisegmented lens element having a plurality of lens segments with optical axes spaced apart from one another in the triangulation direction.

The invention relates to an optoelectronic component for the positional determination of an incident light beam in a longitudinal axis direction, having flat sides, longitudinal sides and two oppositely disposed end sides, having a low ohmic first contact layer at a first flat side for a first electric contact (cathode) and having at least two low ohmic second contact layers along the end sides for second contacts (anodes). The invention additionally relates to a light sensor having such a component. To provide an improved optoelectronic component for the positional determination of an incident light beam as well as to provide an improved light sensor having such an optoelectronic component, it is proposed that at least one of the second contact layers not only extends along the end side but also over part sections along a second and third long side longitudinal side.

Optoelectronic component and light sensor having same

The subject matter disclosed relates to a method for the detection of objects, wherein one transmitted light bundle is transmitted into a detection region, transmitted light reflected back from an object, when present, is detected by a receiver unit having reception elements arranged in an M&#xd7;N matrix, wherein M&#x3e;1 and N&#x3e;1, and the distance of the object is determined by triangulation from the position of the light patch produced by the reflected light at the receiver unit. In addition to the position of the reflected light, the two-dimensional energy distribution of the received light patch within the light incident on the receiver unit is evaluated to determine further information on the object in addition to the distance of the object determined by triangulation, with a light patch quality value being determined which includes information on the homogeneity of the light reflected or remitted at the object.

Method and optical sensor for the detection of objects

An optoelectronic sensor includes at least one light transmitter for the transmission of light signals into a monitored zone and at least one light receiver for the reception of transmitted light signals. In this respect, the received light signals are converted into electrical received signals in the light receiver. The light signals transmitted by the light transmitter are each generated on the basis of an output signal spread in accordance with a frequency spreading technique (spread spectrum) and provided with an offset applied for the generation of a unipolar signal. The electrical received signals can be supplied to a high-pass filter in the light receiver. Means for interference suppression are provided to automatically measure repeatedly or continuously respective then current interference; to analyze it in the time domain and/or in the frequency domain; and to compensate it at least substantially in dependence on the respective result of the interference analyses.

Optoelectronic sensor

A light barrier detects an object which interrupts a beam of light of the light barrier. A light transmitter transmits a light beam in the direction of a reflector and a light receiver receives a reflected portion of the light beam. The improved light barrier has a reflector which is made as a cylindrical reflector column having a plurality of retroreflecting elements aligned toward the outer surface. The diameter of the reflector column is considerably smaller than the extent of the light beam perpendicular to the cylinder axis so that an optically effective detection beam of light is formed between the sensor and the reflector column whose cross-section at the sensor is determined by the light transmitter and, in direct proximity to the reflector column. The cross-section is determined by the areal overlap of the light beam with the reflector column.

Light barrier

The present invention relates to a method for the detection of an object by means of an optoelectronic apparatus, wherein light rays generated by a light source are incident onto an object as a light bead and the light rays scattered back and/or reflected from the object are detected by a receiver arrangement in accordance with the triangulation principle and an object detection signal including information on a scanning distance between the apparatus and the object is output, with the light rays acting via an imaging element on a pixel array consisting of photodetectors in the receiver arrangement. The method is characterized in that the imaging element is only an array of individual imaging elements positioned before the pixel array and generating a received signal pattern on the pixel array corresponding to a plurality of mutually spaced apart images of the light bead; and in that the information on the scanning distance is determined from the received signal pattern. The present invention furthermore relates to an optoelectronic apparatus for the carrying out of the method.

Method for the detection of an object and optoelectronic apparatus

An apparatus detects an object using an optoelectronic apparatus. Light beams generated by a light source are scattered back and/or reflected by an object and are detected by a receiver arrangement in accordance with the triangulation principle. An object detection signal is output by an evaluation unit and the light beams in the receiver arrangement act via an optical receiver system and a microlens array on a pixel array comprising photodetectors. A macropixel has a plurality of subpixels associated with each microlens. The evaluation unit comprises a unit for determining the received signal distribution over the subpixels. Methods for operating the apparatus are also provided.

Optoelectronic apparatus and a method for its operation

The invention relates to a method for operating an optoelectronic sensor, particularly a light barrier, during which a light emitter emits light signals having a time interval toward a monitoring area, at least some of the light signals being comprised of a number of successive individual pulses. A light receiver receives the emitted light signals. An evaluating unit processes received signals generated from the received light signals and outputs an object determination signal according to the evaluation result. According to the inventive method, a number of light signals are emitted in a regular sequence, the courses of the respective received signals being evaluated in a different manner. The invention also relates to an optoelectronic sensor that is suited for carrying out the aforementioned method.

Method of operating an optoelectronic sensor

An optoelectronic sensor and a method for producing a positive or a negative object detection signal in dependence on the presence or non-presence of an object in a foreground region or in a background region of a region monitored by the sensor. Transmitted light is transmitted in the direction of the monitored region during an operating phase. A plurality of received signals are produced in dependence on the reflected and the received transmitted light which are associated with the foreground region or with the background region. A difference of the received signals is compared with a differential threshold to produce the positive or the negative object detection signal, wherein a switching hysteresis is formed for a change between the positive and the negative object detection signal. The association of the received signals with the foreground region and the background region is changed in dependence on a change in the object detection signal to form the switching hysteresis.

Monitoring method and an optoelectronic sensor

The invention relates to an optoelectronic sensor, in particular a reflection light scanner, at least comprising a transmitter for transmitting transmitted light, a receiver for outputting at least two received signals in dependence on reflected and received transmitted light, and an evaluation device by which, for determining whether an object or no object is disposed in a detection zone of the sensor, a difference of the received signals is comparable with a threshold and a positive or negative article detection signal can be produced in dependence on the result of this comparison, with a plurality of different thresholds being provided to produce a switching hysteresis. The evaluation device is made such that the result of a comparison of a sum of the received signals with a threshold value is provided as an additional criterion for the production of the article detection signal. The invention further relates to a corresponding method.

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Sexau, Germany

Gerhard Merettig