Abstract: The present invention relates to a sensor (8) for use with an automatic door comprising at least two detectors (10, 12) based on different technologies, a processor (14) for processing the signals generated by at least two detectors (10, 12) in that it simultaneously uses the signals in order to combine the signals and to accurately detect the situation in a surveillance area (20, 22) sensed by the sensor (8).

Abstract: The present invention relates to a thermally sensitive array device for detecting a presence of a target object in a surveillance area. The device comprises a plurality of at least two thermally sensitive sensors provided in an array arrangement, each thermally sensitive sensor being associated with one of a corresponding plurality of at least two surveillance spots comprised in the surveillance area. Each thermally sensitive sensor comprises a sensitive element adapted to absorb a portion of thermal infrared radiation emitted from one of said plurality of targets located inside the surveillance cone corresponding to the thermally sensitive sensor. The thermally sensitive sensor can be a thermopile, a bolometer, or any other type. Electronic circuits in each thermally sensitive sensor are adapted to measure a signal generated in the thermally sensitive sensor as a consequence of the temperatures of the target.

Abstract: A door sensor system (90) for detecting a target object (56) in and/or near a door comprising a door opening (96), and at least one movable door element (76, 76-1, 76-2, 76-3, 76-4), the system comprising at least one light scanner device (10) which is capable of measuring optically the distance to a target to make such a measurement over a given scan angle at regular intervals by deflecting the light with moving mirrors, and which generates at least one vertical plane of detection.

Abstract: A measurement sensor comprising a PSD (30) as an optoelectronic receiver, a transmitter (10, 12) for generating spots (22, 26), optics (14, 32) for reproducing the spots (22?, 26?) on the PSD (30) and means (44, 46, 48, 50, 52) for processing output signals (I1, I2) generated by said PSD (30) and for controlling the transmitter (10, 12) depending on the processed output signals (I1, I2) in order to measure the distance between the target (24) and the sensor by a triangulation technique is disclose closed. The transmitter comprises at least two optoelectronic signal sources (10, 12) for projecting at least two spots (22, 26) independent from each other on a target (24), the means (44, 46, 48, 50, 52) comprising a digitally controlled potentiometer (48) for balancing the output signals (I1, I2) and a digital processor (52) adapted for controlling the potentiometer (48).

Abstract: The present invention relates to a light scanner device. (10) for measuring a range and an angular direction of a target object (56), the device (10) comprising a pulsed source (12) adapted to transmit light pulses, a transmitter deflection means (20) adapted to reflect and sweep the transmitted light pulses in variable sweep directions across a sweep sector in a sweep plane (15), a photodetection means (42) adapted to detect received light pulses that have been reflected in the sweep plane (15), a receiver deflection means (24) adapted to reflect light pulses that have been reflected in the sweep plane (15) and to re-direct the reflected light pulses to the photodetection means (42).