Abstract: An optoelectronic sensor is provided that has a front screen, a measuring unit, a movable deflection unit, and a contamination test unit moved along with the deflection unit for generating a received contamination test signal from contamination test light reflected at the front screen. In this respect, the contamination light unit has at least two contamination test light transmitters and/or at least two contamination test light receivers to form a plurality of contamination test channels and a control and evaluation unit is configured to detect the object by evaluating a received measurement signal of the measuring unit and to evaluate the contamination of the front screen by evaluating the plurality of received contamination test signals of the plurality of contamination test channels.

Abstract: A sensor device (10) comprising a housing (48a-b), a position sensor (44) for determining an alignment, a display unit (46a-d) for displaying alignment information, and a control and evaluation unit (40) configured to use the position sensor (44) to determine the sensor device's (10) alignment, to compare the alignment with a desired alignment, and to display a comparison result using the display unit (46a-d), wherein the display unit (46a-d) comprises at least three light sources (46a-d) at positions distributed over the housing (48a-b), each light source (46a-d) being configured to assume a first display state for a correct alignment and a second display state for an alignment that is not yet correct, with the control and evaluation unit (40) further being configured to display the comparison result as display states of the light sources (46a-d).

Abstract: A distance-measuring sensor (10) is provided for detecting and determining the distance of objects (18) in a monitored zone comprising a transmitter (12) for transmitting transmitted pulses; a receiver (20) for generating a received signal from the transmitted pulses remitted in the monitored zone; a first comparator unit (36a) for digitizing the received signal with reference to a first threshold; and a control and evaluation unit (30) which is configured to transmit a plurality of transmitted pulses via the transmitter (12), to collect the received signals thereupon generated by the receiver (20) in a histogram and to determine a received time point from the histogram and thus to determine a measured value for the signal transit time from the sensor (10) to the object (18).

Abstract: A distance-measuring sensor (10) is provided for detecting and determining the distance of objects (18) in a monitored zone comprising a transmitter (12) for transmitting transmitted pulses; a receiver (20) for generating a received signal from the transmitted pulses remitted in the monitored zone; a first comparator unit (36a) for digitizing the received signal with reference to a first threshold; and a control and evaluation unit (30) which is configured to transmit a plurality of transmitted pulses via the transmitter (12), to collect the received signals thereupon generated by the receiver (20) in a histogram and to determine a received time point from the histogram and thus to determine a measured value for the signal transit time from the sensor (10) to the object (18).

Abstract: The invention relates to a laser scanning apparatus, in particular for distance determination, comprising a transmission unit which has a pulsed laser for the transmission of a light beam into a zone to be monitored, comprising a light deflection unit to deflect the light beam transmitted by the pulsed laser into the zone to be monitored, comprising a reception unit for the reception of light pulses which are reflected by an object located in the zone to be monitored, and comprising a front screen which transmits the light beam and which separates the transmission unit, the reception unit and the light deflection unit from the surroundings of the laser scanning apparatus, with at least one optical element being provided which splits off a part beam from the transmitted light beam and deflects the part beam to a photo-detector for a measurement of the transmission of the front screen.

Abstract: The invention relates to a laser scanning apparatus, in particular for distance determination, comprising a transmission unit which has a pulsed laser for the transmission of a light beam into a zone to be monitored, comprising a light deflection unit to deflect the light beam transmitted by the pulsed laser into the zone to be monitored, comprising a reception unit for the reception of light pulses which are reflected by an object located in the zone to be monitored, and comprising a front screen which transmits the light beam and which separates the transmission unit, the reception unit and the light deflection unit from the surroundings of the laser scanning apparatus, with at least one optical element being provided which splits off a part beam from the transmitted light beam and deflects the part beam to a photo-detector for a measurement of the transmission of the front screen.