Abstract: A protective device for securing to a component movable along a track and for the monitoring of a protected zone moving with the component includes a light transmitter for the radiation of a divergent transmitted light beam into a spatial zone containing the protected zone, a light receiver for the reception of at least some of the light of the transmitted light beam of the light transmitter radiated into the spatial zone and for the emitting of corresponding received signals, and a restriction device which is arranged in the direction of a transmitted light path after a section of the transmitted light path which contains the protected zone and by means of which the transmitted light beam can be restricted to a less divergent received light beam defining the width of the protected zone in at least one direction.

Abstract: A light grid which has a housing made from an extruded profile. An electronic component plate is movably insertable into the interior of the housing and carries the optical components of an emitter unit or a receiver unit, respectively. The housing has a support plate and an intermediate web which connect spaced-apart side walls of the profile and include openings. The support plate also has openings into which corresponding optical function elements are inserted. The openings in the intermediate webs serve as apertures. To precisely align the component plate with the optoelectronic components thereon relative to the housing, positioning pins are inserted through openings in the support plate and the intermediate web and which further engage locating holes in the component plate.

Abstract: A strip-like housing of a light grid has two side walls that extend over its entire housing length and that are joined together by cross braces. The cross braces form a honeycomb structure, in which the transmitting and receiving elements of the light grid are installed.

Abstract: A transmitting element for light barriers, light grids and the like has a light source preferably configured as a semiconductor element, whose light-emitting surface has linear dimensions of less than 500 ?m. In front of the light-emitting surface of the light source, at a distance of at least 5 mm, is a pin-hole diaphragm with an aperture of a diameter of less than 3 mm. The transmitting element is covered by a transparent front glass pane.

Abstract: A light barrier or light grid which has at least one light emitter arranged in a first housing and at least one associated light receiver arranged in a second housing. At least one emitter of visible alignment light installed in the first or the second housing generates one or more alignment light beams which is used to geometrically orient the light emitter relative to the opposite light receiver. For optically aligning the two housings, at least one alignment mechanism is present in the housing which receives the alignment beam. The alignment mechanism has at least one surface which optically deflects the alignment beam towards a target plane.

Abstract: The invention relates to an optoelectronic monitoring device for the detection of objects intruding into a monitored zone comprising at least one transmitter, in particular a light grid, arranged at an end of the monitored zone and having a group of transmission elements spaced apart from one another and each transmitting electromagnetic radiation into the monitored zone, at least one reflector arranged at an end of the monitored zone opposite the transmitter for radiation transmitted by the transmission elements, at least one receiver which has at least one spatially resolving reception element for radiation reflected by the reflector, and an evaluation device coupled with the reception element, wherein the transmitter, the reflector and the receiver are made and arranged such that, during the monitoring operation, at least a part of the group of transmission elements comprising a plurality of transmission elements is imaged on the reception element by means of the reflector and a check is made by means of t

Abstract: An opto-electronic apparatus for the monitoring of a protection area which has at least one protection device, which works in a non-contact manner, is described. The protection device, which works in a non-contact manner, has an evaluation unit for the generation of an object detection signal on the intrusion of an object into the protection area. An image detection unit is coupled to the protection device, which works in a non-contact manner, for the detection of an areal or spatial image detection area, with a secondary monitoring area disposed close to the protection area, but outside the protection area, being detected by the image detection unit. The protection device, which works in a non-contact manner, is controllable by the image detection unit.

Abstract: An optical monitoring apparatus has a light transmitter for the transmission of at least two light beams offset substantially parallel to one another into a protected zone as well as a light receiver for the for the reception of the transmitted light beams and for the outputting of corresponding received signals. The light receiver has at least one photo-sensitive element having an elongate light-sensitive region whose elongate direction is aligned parallel to the arrangement of the light beams perpendicular to the direction of transmission such that all radiated light beams can be completely detected by the light sensitive region. A control circuit is provided for the distinguishing of the light beams which causes the light transmitter to make a transmission of the light beams offset in time.

Abstract: A light barrier or light barrier grid has two housings in which a light source and a light receiver are arranged. In addition, an apparatus for aligning the two housings is provided. For this purpose, the first housing includes an alignment light emitter, while a mirror is arranged in the second housing. An alignment beam generated by the alignment light emitter is reflected by the mirror onto itself, or nearly onto itself.

Abstract: An optic-electronic arrangement to prevent access to or detect objects approaching a protected zone. An emitter/receiver unit is positioned on one side of the zone and an opposing, passive reflector unit is positioned at the other side of the zone. Emitted light is directed from one side of the zone to the other side along a control distance and is divided into a plurality of spatially spaced apart reflected beam portions that extend along the control distance and are detected by sensors in the emitter/receiver unit for further processing.

Abstract: The invention relates to an optoelectronic monitoring device for the detection of objects intruding into a monitored zone comprising at least one transmitter, in particular a light grid, arranged at an end of the monitored zone and having a group of transmission elements spaced apart from one another and each transmitting electromagnetic radiation into the monitored zone, at least one reflector arranged at an end of the monitored zone opposite the transmitter for radiation transmitted by the transmission elements, at least one receiver which has at least one spatially resolving reception element for radiation reflected by the reflector, and an evaluation device coupled with the reception element, wherein the transmitter, the reflector and the receiver are made and arranged such that, during the monitoring operation, at least a part of the group of transmission elements comprising a plurality of transmission elements is imaged on the reception element by means of the reflector and a check is made by means of t

Abstract: A hydrostatic vehicle drive has a control (5) for controlling an output torque of the drive and another control device (5) for controlling the output torque of a hydrostatic drive, the control device (5) having a controllable pressure-limiting valve (6) by means of which the working pressure can be adjusted and which is used for sensitive control of the output torque of a hydraulic motor (3). The pressure-limiting valve (6) can be controlled by a proportionally adjustable pressure-reducing valve (7).

Abstract: An opto-electronic apparatus for the monitoring of a protection area comprising at least one protection device, which works in a non-contact manner, is described. The protection device, which works in a non-contact manner, comprises an evaluation unit for the generation of an object detection signal on the intrusion of an object into the protection area. An image detection unit is coupled to the protection device, which works in a non-contact manner, for the detection of an areal or spatial image detection area, with a secondary monitoring area disposed close to the protection area, but outside the protection area, being detected by said image detection unit. The protection device, which works in a non-contact manner, is controllable by the image detection unit.