Hand-held laser range finder
A technology of laser rangefinder and rangefinder, which is applied in the field of handheld devices and laser rangefinders, and can solve problems such as unsolvable, incorrect measurement results, and inconsistent measurement results
Pending Publication Date: 2020-03-20
LEICA GEOSYSTEMS AG
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- Application Information
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Problems solved by technology
In addition, when aiming at corners and edges, it often occurs that the measuring light sweeps across geometrical features or that multiple objects are measured which cannot be resolved or cannot be resolved unambiguously by the distance measuring unit of the measuring device
In particular the distortion of the light pulse on the edge hinders the measurement in the case where both a part of the foreground of the edge and a part of the background of the edge (and possibly even a part of the surface connecting the foreground and background) are touched by the measuring light spot and can lead to inaccurate or even incorrect measurements or at least unintended measurements
Method used
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[0053] The illustrations in the drawings are for illustration purposes only and should not be considered to be drawn exactly to scale unless expressly stated otherwise. Where applicable, the same reference numerals are used throughout to provide identical or functionally similar features, and possibly letters as an index to differentiate them. The illustrated schematic diagrams all show the basic technical structure, which can be supplemented or modified by those skilled in the art according to general principles. The expressions "essentially" or "approximately" mean that the characteristics do not have to be fulfilled 100% in the sense of the invention, but minor deviations can also occur, especially in the following manner: in the sense of the invention and and / or maintain the technical effect of the described features within the scope of ordinary tolerances and inaccuracies in implementation or manufacture.
[0054] figure 1 One possible example of implementation of a han...
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A hand-held laser range finder includes a manual-use housing, an electro-optical distance measurement unit arranged in the housing for ascertaining at least one measured distance between the laser distance meter and a target object in a measurement direction, and a camera arranged in the housing having a field of view in the measurement direction. A deflection unit is disposed in the housing for the angular deflection of the measurement direction and an operating and input arrangement for operating at least the distance measurement unit and the camera. A control unit at the housing is configured to activate the distance measurement unit and the deflection unit such that a series of measured values of the measured distance are recorded in different deflections along a path of the deflection, and a subsequent selection of the measured distances from the series of measured values is carried out using the operating and input arrangement.
Description
technical field [0001] The present invention relates to a laser distance meter in the form of a hand-held device and to a method of taking measurements using the same, and to a computer program product in this regard. [0002] The present invention relates to hand-held devices for optoelectronic distance measurement, also commonly referred to as hand-held distance meters, hand-held distance measuring devices, Disto, EDM, Distometer, LaserDisto, Distomat, distance measurement, laser distance meters and the like. This is a hand-held device, ie a device that is held in the hand during surveying, which is used for simple surveying work, for example, in trade work or construction surveying. In this case, in addition to simple distance measurement functions, some device embodiments can also calculate area, volume, angle, inclination, inclined distance, elevation angle, etc., and store associated metadata (such as images or other attributes) , and / or may provide data transmission to...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G01S17/10G01S7/481
CPCG01S17/10G01S7/481G01S7/4817G01S17/42G01B11/026G01S7/4814G02B27/30
Inventor M·哈梅尔
Owner LEICA GEOSYSTEMS AG