Abstract: An absolute position-measuring device includes a first subassembly having a measuring standard on which at least one code track is disposed, and a scanning unit with which, by scanning the at least one code track in a measuring direction, position signals are able to be produced, from which an absolute digital position value is able to be generated. The position-measuring device includes a second subassembly having at least one peripheral unit adapted to perform an additional or auxiliary function of the position-measuring device. The first subassembly and the second subassembly are connected to each other by a plurality of electric lines for the transmission of electrical signals. The first subassembly exclusively includes components which are suitable for use in a radiation area of a machine.

Abstract: A position-measuring device includes a code carrier having a first graduation track and a second graduation track, the second graduation track being an incremental graduation track. A first detector system is configured to scan the graduation tracks so as to generate first position signals. A second detector system is configured to scan the second graduation track so as to generate second position signals. A first position-processing unit is configured to process the first position signals so as to yield a first absolute position value. A second position-processing unit is configured to process the second position signals so as to yield a second absolute position value. The first position-processing unit is configured to feed an absolute auxiliary position value to the second position-processing unit. The second position-processing unit is initializable with the absolute auxiliary position value.

Abstract: An angle measuring system includes a first component group and a second component group, the first component group being mounted in a manner allowing rotation about an axis relative to the second component group. The first component group includes a ring having a running surface and an angle scaling. The second component group has a further ring having a further running surface, as well as a sensor for scanning the angle scaling. Rolling elements are arranged between the running surfaces, the angle scaling being applied such that a geometric pattern of the angle scaling in a first region differs from a geometric pattern of the angle scaling in a second region as a function of radial runouts of the running surfaces and/or of the rolling elements.

Abstract: A device for clamping a scale to an attachment face of a support, the device including a securing element and a clamping element that is secured to a support by the securing element. The clamping element includes a first spring element that is resilient in a first direction toward an attachment face of the support, wherein the first spring element introduces a first clamping force on a scale in a direction of the attachment face. The clamping element further includes a second spring element that is resilient in a second direction that extends perpendicular to the first direction and wherein the second spring element introduces a second clamping force onto the scale in the second direction.

Abstract: A position measuring device includes a position detection unit, which may be used to process positional signals that result from scanning a code track by a scanning unit, into digital positional values, a first interface unit for the communication with a control unit via a data transmission channel, and a second interface unit for the communication with at least one peripheral unit. The first interface unit is a hard-wired interface, and the second interface unit is a wireless radio interface.

Abstract: A scanning unit of a position measuring unit for scanning a scale, the scanning unit including a display unit having a light source. The scanning unit further including a regulating device for controlling an amplitude of an analog scanning signal of the scanning unit, wherein the regulating device triggers the light source to cause a change of an illumination state of the light source, wherein successive changes of the illumination state of the light source contain information regarding the amplitude of the analog scanning signal.

Abstract: A position-measuring device for measuring linear and/or angular positions includes a first measuring standard that has a first code track, with the aid of which consecutive position regions are cyclically measurable, and at least two multiturn code disks having second code tracks, via whose angular positions the currently measured position region of the first code track may be determined. The first measuring standard and the multiturn code disks are positioned such that the first code track and the second code tracks are scannable by a common scanning unit, through a first scanning window and second scanning windows, respectively.

Abstract: An optical position-measuring device includes a light source, a measuring reflector movable in space, a detection unit and a light-beam deflection unit that can align at least one beam of rays, emitted by the light source, in the direction of the measuring reflector. The light-beam deflection unit includes a cardan system having two cardan frames. A first cardan frame is adjustable by motor about a first axis of rotation, and a second cardan frame within the first cardan frame is adjustable by motor about a second axis of rotation oriented in a direction perpendicular to the first axis of rotation. The two axes of rotation intersect in a fixed reference point, at which a reference reflector is disposed. A plurality of mirrors are disposed rigidly on the cardan frames, so that the beam of rays can be pivoted about the fixed reference point via the mirrors during alignment.

Abstract: An angle measuring system includes a first component group and a second component group, the first component group being mounted so as to be rotatable relative to the second component group. The first component group includes a ring having a running surface and an angle scaling. The second component group has a sensor for scanning the angle scaling as well as a printed circuit board having an electronic circuit for evaluating sensor signals producible by the scanning. The second component group furthermore includes a solid ring, on which another running surface is situated and which has a first recess for accommodating the circuit board and a second recess for accommodating an electrical conductor. The conductor connects the sensor electrically to the electronic circuit situated at a distance from the sensor.

Abstract: A position measuring device including a code having a sequence of code elements of equal width B that is disposed in a measurement direction and includes a first property and a second property. The sequence of codes elements includes a first set of code elements having the first property and a second set of code elements having the second property, wherein the first and second sets of code elements are each being disposed aperiodically. The position measuring device further including a scanning unit having a plurality of detectors for scanning the code and obtaining scanning signals, wherein a code word defining an absolute position is defined from the scanning signals.

Abstract: A position measuring device including a reflective scale and a scanning unit. The scanning unit includes a retroreflector and a signal unit wherein the signal unit includes a light source and a detector arrangement. The scanning unit and the signal unit are structurally separate from one another and are disposed in planes parallel to one another, and wherein the scanning unit is movable relative to the reflective scale in a measuring direction. The light source emits a beam that propagates freely in a direction to the scanning unit, wherein from the scanning unit along the direction to the signal unit a pair of interfering partial beams propagate freely and wherein between the signal unit and the scanning unit the partial beams propagate freely in a propagation direction that is oriented perpendicular to the planes.

Abstract: A device for detecting the position of an object in a machine tool includes a camera configured to provide an image of the object and an object carrier to which the object is connected and whose position within the machine tool is known. A first processing unit is configured to identify a position of the object relative to the camera based on geometric features of the object which are obtained from the image. A second processing unit is configured to identify a position of the object carrier relative to the camera based on geometric features of the object carrier which are obtained from the image. A third processing unit is configured to determine a position of the object relative to the object carrier from the identified positions of the object and the object carrier relative to the camera.

Abstract: In a device and a method for transmitting energy and data between a control unit and a position-measuring device via a line pair, the energy transmission takes place in a charge mode and the data transmission takes place in a communication mode, and an energy storage device is provided in the position-measuring device, which is able to be charged in the charge mode via the line pair, and which is able to supply energy to the position-measuring device in the communication mode, and a charge unit and a switching device are provided in the control unit. The switching unit is adapted to the charge unit to the line pair in two-pole manner.

Abstract: An angle-measuring device includes a first group of components and a second group of components that are rotatable relative to each other about an axis. The first group includes a carrier element for enclosing a shaft and on which a graduation disk is secured, a connecting element, and a device for affixing the connecting element relative to the carrier element. The second group includes a sensor element for scanning the graduation disk. The carrier element and the connecting element are arranged such that the connecting element is able to be brought into operative connection with the carrier element so that torque is transmittable with positive locking between the connecting element and the carrier element about the axis. The connecting element is able to be brought into a positive-locking position by axial displacement by the device for affixing the connecting element, and is able to be prestressed radially against the shaft.

Abstract: An optical distance-measuring device includes a light source, and an interferometer unit having a measuring retroreflector, stationary reference retroreflector, beam-splitter element, beam-recombiner unit, and detection unit. The beam of rays emitted by the light source swivels about the center of the reference retroreflector. The beam of rays arriving from the light source splits via the beam-splitter element into a measuring beam and reference beam. The measuring beam propagates in the direction of the measuring retroreflector, and the reference beam propagates collinearly with the measuring beam in the direction of the reference retroreflector. The measuring beam is reflected back by the measuring retroreflector and the reference beam is reflected back by the reference retroreflector in the direction of the beam-recombiner unit, the measuring beam traveling symmetrically relative to the reference retroreflector prior to and after reflection at the measuring retroreflector.

Abstract: A measuring device for detecting a relative position, the measuring device including a measurement graduation movable in at least one measurement direction and a scanning unit for determining a relative position of the measurement graduation with respect to the scanning unit. The scanning unit includes a light source, a scanning grating disposed on a first side of a transparent carrier element that is positioned in a scanning beam path and a detector arrangement. The scanning unit further includes an attenuation structure that adjusts a light intensity on the detector arrangement in a defined manner, wherein either 1) the attenuation structure is disposed on a second side, opposite the first side, of the transparent carrier element or 2) the attenuation structure has a permeability that varies as a function of location at least along one direction so that a light intensity which is uniform at least in that one direction results on the detector arrangement.

Abstract: A position-measuring device, as well as a system having such a position-measuring device, is used for determining the position of a first object relative to a second object, the first and the second object being movable relative to one another along at least two measuring directions. The position-measuring device has an optical unit that is linked to one of the two objects and includes at least one light source, a detector system, as well as further optical elements in a defined configuration. In addition, the position-measuring device includes a measuring standard-reflector unit, which is provided on the other object, and has at least two differently formed regions in one track that are optically scannable by the optical unit for position sensing.

Abstract: A length measuring instrument including a hollow profile section extending in a longitudinal direction and an end piece fixed on the hollow profile section for closure of the hollow profile section on an end of the hollow profile section. A scale is disposed inside the hollow profile section, wherein the scale includes a measurement graduation which can be scanned by a scanning unit that is movable in the longitudinal direction relative to the hollow profile section. The length measuring instrument includes a sealing element on the end piece for sealing off the hollow profile section, wherein the sealing element has a cross-section that is at least extensively equivalent to an inside diameter of the hollow profile section. In addition, the sealing element rests sealingly so that a circumferential surface of the sealing element is on an inner face of the hollow profile section.

Abstract: A length measuring instrument that includes a hollow profile section extending in a longitudinal direction, wherein the hollow profile section includes a slot extending in the longitudinal direction and covered by sealing elements. A scale is disposed inside the hollow profile section, wherein the scale includes a measurement graduation which can be scanned by a scanning unit. An end piece is connected to the hollow profile section, wherein the end piece closes the hollow profile section on an end of the hollow profile section, the end piece including an insertion region with which the hollow profile section plunges into the hollow profile section. The length measuring instrument includes a clamping piece that connects the end piece to the hollow profile section, wherein the clamping piece spans the slot and which on two sides of the slot fixes the hollow profile section to the insertion region of the end piece.

Abstract: In a device and a method for serial data transmission between a position-measuring device and a control unit, made up of an interface unit on the control side and an interface unit on the measuring-device side, which are connected to each other for the transmission of serial data packets with the aid of a bidirectional data channel, the interface unit on the control side includes a control-side transmitter unit for transmitting serial data packets via the data channel to a measuring-device-side receiver unit disposed in the interface unit on the measuring-device side. The interface unit on the measuring-device side includes a measuring-device-side transmitter unit for transmitting serial data packets via the data channel to a control-side receiver unit disposed in the interface unit on the control side.