Line laser

Abstract

Laser rangefinder comprising a distance measuring module whose optical axis is fixed with respect to the attachment point on the tripod and the distance reference point, and which comprises a signal evaluation circuit, a microprocessor, a memory, a control panel, a display and a battery, characterized in that it comprises an additional diffractive optical module (DOE) connected to the signal evaluation circuit and a module for determining the orthogonality of the optical axis of the distance measuring module to the plumb point.

Description

[0001] The present invention relates to measuring instruments for determining distances in a direction orthogonal to the reference line. The primary application of the invention is measuring instruments used in construction.

[0002] Laser rangefinders (electro-optical modules) are well known, which are standalone laser measuring devices - modern measuring tools that replace the conventional tape measure and enable high-precision measurement of object dimensions both indoors and outdoors.

[0003] A laser rangefinder is known that contains a module for measuring distance, area, and volume, whose optical axis is fixed to the tripod mount and to the distance reference point. It includes a signal evaluation circuit, a microprocessor, a memory, a control panel, a display, and a battery.

[0004] However, known laser rangefinders cannot project evenly spaced vertical and horizontal marking lines.

[0005] The closest thing to the present invention is a laser rangefinder comprising a distance measuring module with a fixed optical axis with respect to the attachment to the tripod and the distance starting point, as well as a signal evaluation circuit, microprocessor, memory, control panel, display and battery (see Utility Model RU No. 108836, Class IPC G01C3 / 02, filed on 10.05.2011, published on 27.09.2011, "Laser Rangefinder").

[0006] The object of the present invention is to provide a universal measuring device that enables the projection of evenly spaced vertical and horizontal marking lines while maintaining the distance measuring function.

[0007] The technical result for solving this problem is the development of a laser rangefinder equipped with an additional diffractive optical module (DOE) connected to the signal evaluation circuit and a module for determining the orthogonality of the optical axis of the rangefinder module to the plumb point.

[0008] The module for determining the orthogonality of the optical axis of the distance measuring module can be designed as a circular bubble.

[0009] The stated problem is solved by installing a known laser rangefinder, which comprises a distance measuring module with a fixed optical axis with respect to the attachment to the tripod and the reference point, as well as a signal evaluation, microprocessor, memory, control panel, display and battery, according to the utility model, additionally a diffractive optical module (DOE), connected to the signal evaluation circuit, and a module for determining the orthogonality of the optical axis to the plumb point.

[0010] The module for determining the orthogonality of the optical axis can be designed in the form of a circular bubble.

[0011] The proposed laser rangefinder can be manufactured in any company specializing in this field, since it uses well-known materials, components and standard equipment produced by domestic and foreign industries.

[0012] Therefore, the present invention of a laser rangefinder meets the criterion of “industrial applicability”.

[0013] The proposed combination of essential features provides the claimed laser rangefinder with new properties that allow solving the posed problem – namely, the development of a universal measuring device that enables the projection of evenly spaced vertical and horizontal marking lines while maintaining the functionality of a laser rangefinder.

[0014] Equipping the laser rangefinder with an additional diffractive optical module (DOE) connected to the signal evaluation circuit enables a significant reduction in the costs and dimensions of the projection system.

[0015] Equipping the device with a module for determining the orthogonality of the optical axis of the distance measuring module to the plumb point replaces the mechanical plumb line and thus increases the reliability of the device.

[0016] The present invention is explained by drawings: Fig. : Block diagram of the laser rangefinder. Fig. : Operating mode of the rangefinder with additional diffractive optical module (DOE) and module for determining the orthogonality of the optical axis to the plumb point. Fig. : Display variant on the display in the reference line projection mode. The laser rangefinder includes:

[0017] Distance measuring module (1), the optical axis of which is fixed for attachment to the tripod and to the reference point, signal evaluation circuit (2), microprocessor (3), memory (4), control panel (5), display (6), battery (7), additional diffractive optical module (8, DOE), connected to the signal evaluation circuit (2), module (9) for determining the orthogonality of the optical axis of the distance measuring module (1) to the plumb point. How the laser rangefinder works:

[0018] The rangefinder is mounted on a tripod. In mode for projecting evenly spaced vertical and horizontal marking lines (see Fig.), the diffractive optical module (8, DOE) and the module (9) for determining orthogonality are switched on via the control panel (5). Based on the information on the display (6) provided by the module (9) for determining the orthogonality of the optical axis of the distance measuring module (1) to the plumb point, the laser rangefinder is aligned orthogonally to the marking plane. The microprocessor (3) calculates the distance I between the vertical and horizontal marking lines, taking into account the distance L to the marking plane and the divergence angle α of the diffractive module (8). The projection of the equally spaced vertical and horizontal lines then begins.

[0019] The proposed laser rangefinder is characterized by its compact design, handy dimensions, ease of use, high measurement accuracy, versatility and a reduction of labor in measuring tasks. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] RU 108836

[0005]

Claims

[1] Laser rangefinder containing a distance measuring module whose optical axis is fixed with respect to the attachment point on the tripod and the distance reference point, and which comprises a signal evaluation circuit, a microprocessor, a memory, a control panel, a display and a battery, characterized by that it contains an additional diffractive optical module (DOE) connected to the signal evaluation circuit, as well as a module for determining the orthogonality of the optical axis of the distance measuring module to the plumb point. [2] Laser rangefinder according to claim 1, characterized by that the module for determining the orthogonality of the optical axis of the distance measuring module can be designed in the form of a circular bubble.

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