Abstract: A method of and an apparatus for an electro-optical distance measurement in which a laser beam of a laser diode (1) is directed as an intensity modulated train of emitted light pulses onto an object, the reflected measurement pulse train (10) is detected by a light detector (6), 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 (6), 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.

Abstract: A lateral distance hand-held measuring device having a computer unit (2), an input/output unit (3) and a first laser distance measuring module (4a, 4b) transmitting a visible measurement laser beam (I, II). A second laser distance measuring module (4a, 4b) is provided, which transmits a second visible measurement laser beam (I, II) and is mechanically and data-technically coupled with the first laser distance measuring module (4a, 4b). The two measurement laser beams (I, II) have a defined pivot angle (?) relative to each other and known to the computer unit (2).

Abstract: An electro-optical hand-held distance measuring instrument (1) with a housing (2) which can be held in the hand and with an electro-optical distance measurement module (3) with an electric beam source (5) for generating an optical measurement beam (S), a beam receiver (8) for receiving portions of the measurement beam (S) that are backscattered by an object to be measured (MO), and an output device (7) for the determined distance (X). A mechanical distance measuring device (9, 11) is connected to the housing (2).

Abstract: An electro-optical distance measuring system (1, 1′) for large measurement ranges having a para-axial arrangement of a beam source (2) with a transmitting optics (3) and a beam receiver, configured as at least one small-area photodiode (4), with an associated receiving optics (5), which contains the processes for signal extension for the lower distance measurement range for distances (X). The beam source (2), the transmitting optics (3), the small-area photodiode (4) and the receiving optics (5) are each oriented with their optical axes (A1, A2) parallel to the measurement light beam (6). The measurement light beam (6) is directed from the transmitting optics (2) to the measurement object and continues to the receiving optics.

Abstract: A portable laser distance measuring device (1) with an optoelectronic transmitter (2a) and receiver (2b) and an input (4) such as mode selection switches and an output (5) such as a liquid crystal display arranged on a convenient housing (3), which are arranged at least in part on a cover plate (6). At least one additional input (7) such as a push-button triggering the measuring operation is arranged on a side panel (8) adjacent to the cover plate (6).

Abstract: A handheld laser distance measuring device (1) and extreme value measurement process, including, in a first step, an input means (2) is actuated that triggers a measurement sequence, during which, in a second step, individual distance measurements are made triggered by the handheld laser distance device (1) and, in a third step, at least one minimum value (4) or one maximum value (5) relative to the measurement sequence is determined by the handheld laser distance measuring device using the individual measurements. An extreme value difference (6) relative to the measurement sequence is computed by the handheld laser distance measuring device (1) using at least one minimum value (5) and at least one maximum value (4).

Abstract: A laser distance measuring device (1) includes a laser diode (4) for emitting a high frequency intensity modulated measurement light beam (3) and connected with a signal generating unit (SGU) that generates a high frequency measurement signal (9) for high frequency signal transfer, at least one receiver photodetector (8a) for receiving a measurement light beam (3) reflected from a measurement object (5) and connected to a high frequency demodulator (13) for generating a low frequency phase delay signal (S1) containing phase information of the reflected intensity modulated measurement light beam (3), and a microcontroller (&mgr;C) for calculating a distance (D) from the phase delay signal (S1) and connected to the high frequency demodulator (13), with the microcontroller (&mgr;C) being connected to a control photodetector (8c) arranged in the measurement light beam (3) for low frequency transfer for determining an interference modulation component.

Abstract: A method of and an apparatus for an electro-optical distance measurement in which a laser beam of a laser diode (1) is directed as an intensity modulated train of emitted light pulses onto an object, the reflected measurement pulse train (10) is detected by a light detector (6), 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 (6), 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.

Abstract: An electro-optical distance measuring system (1, 1′) for large measurement ranges having a para-axial arrangement of a beam source (2) with a transmitting optics (3) and a beam receiver, configured as at least one small-area photodiode (4), with an associated receiving optics (5), which contains the processes for signal extension for the lower distance measurement range for distances (X). The beam source (2), the transmitting optics (3), the small-area photodiode (4) and the receiving optics (5) are each oriented with their optical axes (A1, A2) parallel to the measurement light beam (6). The measurement light beam (6) is directed from the transmitting optics (2) to the measurement object and continues to the receiving optics.

Abstract: A lateral distance hand-held measuring device having a computer unit (2), an input/output unit (3) and a first laser distance measuring module (4a, 4b) transmitting a visible measurement laser beam (I, II). A second laser distance measuring module (4a, 4b) is provided, which transmits a second visible measurement laser beam (I, II) and is mechanically and data-technically coupled with the first laser distance measuring module (4a, 4b). The two measurement laser beams (I, II) have a defined pivot angle (&agr;) relative to each other and known to the computer unit (2).

Abstract: The invention is directed to a method for optoelectronic distance measurement and a measurement device based on this method, in which two light emitters, particularly laser emitters and two photodiode receivers are used for calibration. Part of the modulated output of the main emitter reaches the measurement object and then arrives at the main photoreceiver in the form of scattered light and another part of the output of the main emitter travels directly to a reference photoreceiver, while a part of the modulated output of the reference light emitter is guided directly to the main photoreceiver and another part is guided directly to the reference photoreceiver.

Abstract: An optoelectronic laser distance-measuring instrument (1) with preselectable or sensitive reference points (3a, 3b, 3c) arranged on the outer edge of a portable housing (2) and having a radiation source (4), an associated radiation receiver (5) for a laser beam (6), a microcontroller (9), keypad (10), a display (11), which can be read off from the handling distance, for the depiction of a measured result (14), a camera lens (7) that is aimed in the direction of the laser beam (6) and has a image sensor (8), whose detected target area (12) can be graphically depicted on the display (11) at least partially together with a virtual measuring spot (13) calculated by the microcontroller (9) as well as with the measured result (14).

Abstract: The invention is directed to an arrangement and a method for generating high voltage from a low-voltage supply source using a charge reservoir chargeable and rechargeable to the desired high voltage or higher via a charge pump. A first switching device regulates the supply of electric charge from the precharged charge reservoir to a separate storage capacitor. As a result, a high voltage signal that is extensively noise-free is available during certain operating phases, such as a measurement process. A second switching device ensures a regulated discharge from the storage capacitor when the capacitor is overcharged, for example, for the readjustment of the high voltage to be generated. A capacitive voltage divider, which reduces the high voltage without losses, is provided to determine the actual value of the high voltage. At very small currents, the desired high voltage can be maintained by using the capacitive voltage divider for a substantially longer time than by using an ohmic voltage divider.

Abstract: An optoelectronic laser distance-measuring instrument (1) with preselectable or sensitive reference points (3a, 3b, 3c) arranged on the outer edge of a portable housing (2) and having a radiation source (4), an associated radiation receiver (5) for a laser beam (6), a microcontroller (9), keypad (10), a display (11), which can be read off from the handling distance, for the depiction of a measured result (14), a camera lens (7) that is aimed in the direction of the laser beam (6) and has a image sensor (8), whose detected target area (12) can be graphically depicted on the display (11) at least partially together with a virtual measuring spot (13) calculated by the microcontroller (9) as well as with the measured result (14).

Abstract: 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 (2) from a light signal impinging on the latter, with the depletion layer capacitance (CAPD) of the avalanche photodiode (2), 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 (1) which is acted upon by a phase-locked reference oscillator (6) and which controls the capacitance (C) of a capacitance diode (3) connected in parallel with the depletion layer capacitance.

Abstract: The subject of the invention is an arrangement and a corresponding method for generating high voltage from a low-voltage supply source, preferably a commercially available battery or an accumulator, using a charge reservoir that can be charged and recharged via a charge pump to the desired high voltage or higher. According to the invention, in order for a high voltage signal which is extensively noise-free to be available at least during certain operating phases, e.g., during a measurement process, a first switching device is provided for regulated supply of electric charge from the precharged charge reservoir to a separate storage capacitor. By means of a second switching device, a regulated discharge from the storage capacitor is ensured when the latter is overcharged, for example, for readjustment of the high voltage to be generated.