Hilti Aktiengesellschaft

Other

Jenoptik Aktiengesellschaft

Esw Gmbh

Jenoptik Laser, Optik, Systeme Gmbh

Jenoptik Advanced Systems Gmbh

Helmut Seifert

Torsten Gogolla

Andreas Winter

Gero Schusser

Stefan Tiefenthaler

Martin Penzold

Roman Steffen

Heinz Kousek

Ullrich Krueger

Armin Spiegel

Dieter Schmidt

Ullrich Kr&uuml;ger

A measuring device and a method for adjusting the measuring device is disclosed. The device includes a first electro-optical component, a second electro-optical component, a beam-shaping optical element, an optics carrier, and a printed circuit board. The optics carrier includes a first receptacle, where the first electro-optical component is mounted in the first receptacle, and a second receptacle, where the beam-shaping optical element is mounted in the second receptacle. The printed circuit board includes a third receptacle, where the second electro-optical component is mounted in the third receptacle. The first electro-optical component and the beam-shaping optical element are adjustable relative to the optics carrier in a direction of a respective optical axis of the first electro-optical component and the beam-shaping optical element and the second electro-optical component is adjustable and fixable in a plane essentially perpendicular to an optical axis of the second electro-optical element.

Measuring device for measuring distance

A measuring device for measuring a distance between a reference mark and a target object is disclosed. The device includes a beam source, which is embodied as an electro-optical component and emits a laser beam along an optical axis, a detector, which is embodied as an additional electro-optical component and receives a reception beam reflected and/or scattered by the target object along an optical axis, a beam forming optics, which forms the laser beam and the reception beam along an optical axis, and a beam splitting optics, which deflects the laser beam or the reception beam. An optics carrier is provided with a first receptacle for mounting a first of the electro-optical components and a second receptacle for mounting the beam forming optics. The optics carrier is monolithic.

Measuring device for distance measurement

A laser instrument for electro-optical measurement of the distance of a target object to a reference mark is disclosed. The instrument includes a housing, a measuring device which emits a laser beam and determines a distance value from the receiving beam coming from the target object, an outlet opening to couple out the laser beam from the housing, a display device to display the distance value and an operating device to operate the laser instrument and to start a distance measurement. The display and operating devices are arranged on an upper side of the housing. The outlet opening is arranged in the upper side, in the lower side opposite from the upper side or in a side surface of the housing.

Laser instrument for electro-optical distance measurement

An electro-optic laser distance meter () has a hand-held housing (), an electric radiation source () for generating a bundled light beam (), and receiving optics () with a photoreceiver () for receiving parts of the light beam () that is backscattered in a reception beam bundle () from a measurement object (), with the photoreceiver () being arranged along the reception axis (E) in the focal point (), extending in a plane transverse to the reception axis (E), and being partially shadowed inside the reception beam bundle () by a polarization filter ().

Laser distance meter

A hand-held laser distance measuring device () with pulse reflection mixing includes a control device () for calculating the distance (D) to a measurement object () over at least one determinable periodic, with a pulse repetition frequency (f), time difference (&#x3c4;) between a measurement pulse () reflected at the measurement object () and a reference pulse () of an optically emitted transmitting pulse () traveling over a reference distance () within the device, a local oscillator () for generating the transmitting pulse () at the pulse repetition frequency (f), at least one delay circuit () which can be controlled by the control device (), is arranged between the local oscillator () and a light detector () and/or a light transmitter (), and generates a delay between the scanning pulses () and the transmitting pulses () in order to scan the measurement pulse () and the reference pulse ().

Hand-held laser distance measuring device with a pulse reflection mixing method

A hand-held pulse laser distance measuring device and a pulse reflection mixing method both having an algorithm which controls a microcontroller and which serves to calculate the distance to a measurement object by at least two different time differences &#x3c4;, &#x3c4;between a measurement pulse and a reference pulse with a pulse width &#x394;t, which time differences &#x3c4;, &#x3c4;are measured with a pulse repetition frequency f, f, respectively, wherein a selection module is provided which selects at least the first pulse repetition frequency ffrom at least a first frequency set {f}with at least one other pulse repetition frequency fin such a way that the condition |&#x3c4;&#xb7;f|&#x3e;A &#x3e;2&#xb7;|&#x394;t&#xb7;f| is satisfied with a pre-selected lower limit A, a relative time difference |&#x3c4;&#xb7;f| and a relative pulse width |&#x394;t&#xb7;f|.

A hand-held pulse laser distance measuring device () with an algorithm () which controls a microcontroller () and which serves to calculate the distance (X) to a measurement object () by a time difference (&#x3c4;) between a measurement pulse () and a reference pulse () and with a superimposition module () which calculates the time difference (&#x3c4;) of a plurality of repeated pulse trains which are periodically superimposed with a trigger frequency f, wherein the trigger frequency flies in the frequency range of at an interference frequency f=100 Hz . . . 120 Hz; and a measuring method for the pulse laser distance measuring device.

Hand-held pulse laser distance measuring device

An electro-optical hand-held distance measuring instrument () with a housing () which can be held in the hand and with an electro-optical distance measurement module () with an electric beam source () for generating an optical measurement beam (S), a beam receiver () for receiving portions of the measurement beam (S) that are backscattered by an object to be measured (MO), and an output device () for the determined distance (X). A mechanical distance measuring device () is connected to the housing ().

Electro-optical hand-held distance measuring instrument

A laser distance measuring device () includes a laser diode () for emitting a high frequency intensity modulated measurement light beam () and connected with a signal generating unit (SGU) that generates a high frequency measurement signal () for high frequency signal transfer, at least one receiver photodetector () for receiving a measurement light beam () reflected from a measurement object () and connected to a high frequency demodulator () for generating a low frequency phase delay signal (S) containing phase information of the reflected intensity modulated measurement light beam (), and a microcontroller (&#x3bc;C) for calculating a distance (D) from the phase delay signal (S) and connected to the high frequency demodulator (), with the microcontroller (&#x3bc;C) being connected to a control photodetector () arranged in the measurement light beam () for low frequency transfer for determining an interference modulation component.

Laser distance measuring device with phase delay measurement

A local oscillator for use in an optoelectronic distance measurement system for generating a narrow-band HF signal for direct signal mixing with a reception signal generated by an avalanche photodiode () from a light signal impinging on the latter, with the depletion layer capacitance (C) of the avalanche photodiode (), which varies due to different influences and specimen scatter, is incorporated, as an element which (co-)determines the oscillator frequency, in a controllable HF resonant circuit whose HF resonant frequency is determined, for example, by the adjustable divider ratio of a PLL-circuit () which is acted upon by a phase-locked reference oscillator () and which controls the capacitance (C) of a capacitance diode () connected in parallel with the depletion layer capacitance.

Local oscillator for generating an HF signal for direct mixing by using avalanche photodiodes

A method of and an apparatus for an electro-optical distance measurement in which a laser beam of a laser diode () is directed as an intensity modulated train of emitted light pulses onto an object, the reflected measurement pulse train () is detected by a light detector (), which generates, in response to the detection of a measurement pulse train, a first photo-current component, a smaller portion of the intensity modulated pulse train is branched out as a reference pulse train and, after passing a known reference path, is also detected by the light detector (), which generates in response to this detection a second photo current component, and the light detector converts the measurement pulses, together with a mixer pulse train generated by a local oscillator, into a comparatively low-frequency IF-region that determines, after a corresponding conversion, the measured distance.

Method of and apparatus for electro-optical distance measurement

An electro-optical distance measuring system ( ) for large measurement ranges having a para-axial arrangement of a beam source ( ) with a transmitting optics ( ) and a beam receiver, configured as at least one small-area photodiode ( ), with an associated receiving optics ( ), which contains the processes for signal extension for the lower distance measurement range for distances (X). The beam source ( ), the transmitting optics ( ), the small-area photodiode ( ) and the receiving optics ( ) are each oriented with their optical axes (A , A ) parallel to the measurement light beam ( ). The measurement light beam ( ) is directed from the transmitting optics ( ) to the measurement object and continues to the receiving optics. The beam source ( ) and the small-area photodiode ( ) are connected rigidly with each other by at least one rigidly connected circuit board ( ), such that at least the small-area photodiode ( ) can electrically conduct and temporarily adjust in a position ( ) at least using its electrical contacts ( ). The small-area photodiode ( ) is fixed directly in the adjusted position ( ) on the circuit board ( ).

Electro-optical para-axial distance measuring system

A laser range finding device is shown which contains a transmitting channel and a receiving channel. The transmitting channel includes a transmitting lens and a laser light, which is positioned at a focal point of the transmitting lens. The receiving channel includes a receiving lens and a photodiode chip array arranged at a focal point of the receiving lens. The photodiode chip array includes a perforated shutter having at least two shutter apertures.

Laser range finder for large ranges of measurement with a special receiver

Laser distance-measuring instrument for large measuring ranges having a transmitting channel and a receiving channel arranged parallel to one another, the receiving lens being a modified single lens comprising a primary lens region with a primary optical reception axis which is aligned parallel to the optical transmission axis, as well as a secondary lens region with a secondary optical reception axis which is inclined to the primary optical reception axis at an angle &agr;, with the result that a primary focal point and a secondary focal point are produced.

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Serba, Germany

Helmut Seifert