EP2100095A1

EP2100095A1 - Optical marking device

Info

Publication number: EP2100095A1
Application number: EP05763071A
Authority: EP
Inventors: Stefan Clauss; Gunter Flinspach
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2004-08-17
Filing date: 2005-07-06
Publication date: 2009-09-16
Also published as: US20070220762A1; CN101006322A; CN101006322B; DE202005021589U1; DE102004039746B3; WO2006018353A1

Abstract

The invention relates to an optical marking device comprising at least one light source (20,22,24; 32,34,36), and means for producing at least one first optical projection line (26) on a reference surface (10), in addition to means for the production of a second optical projection line (30) on the same reference surface (10), wherein the second optical projection line (30) forms an angle of 90° with the first projection line (26). According to the invention, means (22, 24; 32, 34, 36) are provided in order to produce a third projection line (28) which forms an angle of 45° in relation to the first optical production line (26) and an angle of 45° in relation to the second optical projection line (30). The invention also relates to a tool device comprising one such optical marking device.

Description

Optical marking device

The invention relates to an optical marking device having means for generating a first and a second optical signal on a reference surface according to the preamble of claim 1.

State of the art

In order to carry out a wide variety of leveling, alignment and marking tasks in the field of trades and interior design, laser products have been used for some time, which produce laser markings, depending on the application, to take over existing references of floors, ceilings or walls. A distinction is made between so-called rotary lasers, in which a laser signal is fanned out by rotation of the light source or by rotation of a beam deflecting component in a plane to be set and thus a

Reference surface defined. On the other hand, so-called line lasers are known, which make it possible by projection of the laser signal onto a reference surface that a predetermined direction is visible and thus can be maintained. Thus, for example, so-called laser spirit levels are known whose housing can be leveled in a desired level and the one or more laser beams

Send out marking purposes.

For example, from DE 29716316 Ul a device for leveling and / or attaching markings on walls is known which has a housing with at least one suspension device and with an opening for a laser beam. In the housing, a laser beam generator is suspended from a pendulum axle in free-swinging mode.

From EP0785412A2 a laser leveling device with an elongated housing and dragonflies is known. Ih the housing is a laser module with a

Laser beam optics integrated, which generates a laser beam. On the housing a sighting device with sight and grain is mounted movably. Thanks to the formation of the grain as a vertical gap, the projection point of the laser beam can be detected and precisely adjusted even at long distances or high ambient brightness. From DE 19929436 Al a slash divider for splitting a light beam into partial beams is known, which has a number of reflective surfaces, which are arranged in the beam path of a collimated, primary Lichtstrahleribündels generated by a light source. The reflecting surfaces are inclined in each case by 45 ° with respect to the direction of propagation of the primary light beam and split the incident primary light beam into partial beam bundles that are perpendicular to one another to produce a virtual Cartesian axis system.

Advantages of the invention:

The inventive optical MarMerangsvorrichtung has means for generating a first and a second optical projection line, wherein the second optical projection line forms an angle of 90 ° with the first projection line. Advantageously, in the optical marking device according to the invention

Means are provided which enable it to generate a third projection line, each forming an angle of 45 ° to the first optical projection line and to the second optical projection line.

With the known devices for generating an optical marking is the

Representation of a line at an angle of 45 ° to two right angles aligned lines not possible. A user must therefore cumbersome to determine such a line, for example by calculating appropriate trigonometric functions and adjust the device accordingly. Advantage of the invention is that even a so-called 45 ° line can be displayed directly with the device according to the invention and thus of a

Users can be drawn without great effort, for example, on a reference surface.

Advantageous embodiments and further developments of the device according to the invention according to claim 1 will become apparent with the features listed in the dependent claims.

Advantageously, the first, the second and the third projection line lie in one

Level. In this way it is possible to create a 45 ° orientation on a reference surface. The projecting lines which are at an angle of 90 ° to each other can thereby be used as reference lines to the plant, for example, on one or more walls.

The third projection line is advantageously also an optical projection line. This allows, for example, the three optical

To generate projection lines by means of only a single light source, in particular a single laser signal. This has the particular advantage that the adjustment of the light source, such as a laser diode, is significantly simplified. In this advantageous embodiment of the device according to the invention, the three optical projection lines are generated by means of an optical element from the signal of the individual light source. Such an optical element may, for example, have a holographic diffraction grating or another diffractive or refractive structure.

In an alternative embodiment, the three optical projection lines are generated by at least one light source, in particular by at least one laser. In particular, it is possible to use one laser for each projection line. In this case, such a laser can produce the desired projection line by means of a simple optical system, such as a cylindrical lens. In this embodiment, the three projection lines are adjusted to one another during assembly of the device or during assembly of a tool device comprising the device. Such a construction has the advantage that the optical element for line production is relatively inexpensive, although three laser diodes are required to produce the three projection lines.

Advantageously, with the optical marking device according to the invention, it is possible to realize a tool device which advantageously makes it possible, for example, to arrange objects along a 45 ° projection line to form a reference line. Thus, for example, tiles can be laid diagonally in a room, or out of one, without great effort

Diagonals out the tiles are laid in a similar manner parallel to a wall.

In an advantageous embodiment of the tool according to the invention, the device for generating the optical marking in the manner of a pendulum laser in Housing of the tool device suspended. With such a structure, the tool device leveled by the pendulum technique used even in the horizontal plane.

In alternative embodiments, it is also possible to install the device according to the invention fixed in a housing of the tool device, wherein the

Device is aligned to the device edges of the tool device. It can also be provided to arrange the device according to the invention adjustable, for example mounted on a tripod, in a corresponding tool device.

An inventive tool device advantageously has an operating concept which makes it possible to individually switch the emission of the optical projection line out of the housing of the tool device. In the operating concept of the tool according to the invention, it is thus conceivable that all projection lines can be switched on or off at once, or that separate switch elements are present for each individual projection line. In an advantageous manner

Way, an operating concept for the tool according to the invention is possible, in which one can switch with a switch between the individual optical projection lines back and forth.

The optical marking device according to the invention or a tool device provided with the device according to the invention advantageously makes it possible to also produce and display a line at a 45 ° angle to another projection line without great effort, so that the marking of a 45 ° line to a baseline is enabled.

Further advantages of the device according to the invention will become apparent from the following description of an exemplary embodiment.

drawing

In the drawing, embodiments of the inventive tooling devices are shown with the optical marking device according to the invention, which will be explained in more detail in the following description. The figures of the drawing, the description and the claims contain numerous features in combination. Simply we can look at these features one by one and expand them, meaningful ones Combine combinations, which are thus to be regarded as also disclosed in the description.

Show it:

1 shows a schematic representation of a first application for an embodiment of a tool according to the invention,

2 shows a second exemplary embodiment of a tool according to the invention in a schematic representation of a second application.

Description of the exemplary embodiment

FIG. 1 shows a typical application situation of an optical marking device according to the invention or a tool device according to the invention with such an optical marking device. For example, tiles 12 are to be laid at an angle of 45 ° to a wall 14 on the floor 10 of a room.

The tool device 16 according to the invention has a housing 17 with an optical marking device 18 with a light source 20 in the form of a laser 22, in particular a laser diode 24. Via a holographic diffraction grating 21, the light beam of the light source 20 is split into three sub-beams. In alternative

However, embodiments of the device according to the invention may also have three separate light sources, in particular three laser diodes, each of which generates a partial beam.

By means of a corresponding optics, for example a cylindrical lens, each partial beam is widened in the plane perpendicular to the base 10, so that a laser beam intersects the plane of the base 10, which serves as a reference plane in the exemplary embodiment of FIG. 1, and thus on the surface of the base 10, respectively a projection line 26, 28, 30 generated. In the embodiment of Figure 1, the three projection lines thus have a common origin or starting point.

In addition to the use of a cylindrical lens for generating the fanned-out partial beams or for generating the optical projection lines 26,28,30 on a Reference surface 10 can also be used other optical components, such as correspondingly formed diffraction structures. In particular, it is advantageous to use a single optical diffraction element 21 in order on the one hand to realize the splitting into three partial beams 26, 28, 30 and, on the other hand, to widen each partial beam in a plane which is perpendicular to the plane 10 spanned by the partial beams. Such an element 21 could also be realized as a special holographic diffraction grating. In this case, the optical projection lines would be represented by individual discrete points on the reference surface 10. Also possible is a refractive element that generates the three partial beams.

When used, the tool device 16 according to the invention is oriented in a space in such a way that two projection beams 26, 30 of the optical marking device 18 run as parallel as possible to two walls 14 or 15 of the space. For this purpose, an adjustment device 25 may be provided, which makes it possible to adjust the orientation of the optical marking device 18 within the tool device 16, so that the

Parallelism, for example, the projections 26 and 30 with the corresponding walls 14 and 15 is given. In the exemplary embodiment of FIG. 1, the optical marking device 18 with the laser unit is permanently installed in the tool device 16 according to the invention and adjusted to the device edges.

Also, the optical marking device 18 'may "be provided to make such ^v that it is adjustably positioned within the housing 17 of the power tool 16 and in particular rotatable. Advantageously, power tool 16 according to the invention thereby has an axis of rotation for the optical marking device 18, which is perpendicular to the plane defined by the three partial beams 26,28,30 plane 10 extends.

In alternative embodiments of the tool device 16 according to the invention, the optical marking device 18 may additionally be integrated and suspended in the manner of a pendulum laser in the housing 17 of the tool device 16. In this way, it is possible that one of the Teilstrählen 26 and 30 automatically due to the

Align gravity horizontally so that such a device automatically provides a projection line at 45 ° to this horizontal.

In particular, the projection line 28 in each case forms a 45 ° angle to the projection line 26 or to the projection line 30. With the aid of the so marked on the floor Orientations, for example, the tiles 12 - along the projection lines 28 - are applied to the floor 10 so that they also form an angle of 45 ° to the direction of the projection lines 26 and thus to the direction of the wall 14.

Via corresponding openings in the housing 17 of the tool device 16, which can be switched individually, i. can be opened or closed, the partial beams 26, 28, 30 are also switched individually, so that the emission of one, two or all three of the partial beams 26, 28, 30 emerges from the housing 17 of the power tool 16.

Figure 2 shows an alternative embodiment of an inventive

Tool device in another area of application.

In the embodiment according to FIG. 2, the optical marking device 19 has three individual light sources 32, 34, 36, in the form of three laser diodes, each having a light beam 26, 28, 30 in the part of the electromagnetic visible to the human eye

Send out spectrum. The light source are arranged in such a way that the three light beams seem to come from a common origin, ie the associated axes would intersect at a common point. The laser diodes are arranged downstream of optical elements, such as cylindrical lenses, which cause the light beam is fanned out in each case in a plane. The three light sources 32,

34 and 36 siifd adjusted to each other such that the light beams emitted by them define a common plane 10 which is parallel to the plane of the drawing in the embodiment of FIG. Perpendicular to this plane 10, the individual beams 26,28,20 are split, so that in each case a cutting or projection line of the laser beam 26,28,30 results with the reference plane 10, which can be used as a marker.

In addition to the use of cylindrical lenses for generating the fanned-out partial beams or for producing the optical projection lines on the reference surface, it is equally possible to use other optical components, such as suitably designed diffraction structures. Such elements could also be realized as a holographic diffraction grating. In this case, the optical projection lines would be represented by individual discrete points on the reference surface. The three light sources 32, 34 and 36 are individually switchable in the embodiment of Figure 2 in an advantageous manner. In this case, for example, a separate switching element can be present on the tool device 16 according to the invention or on an external operating unit for the tool device 16 for each of the sub-beams 26, 28, 30 or, in an alternative embodiment, as shown in FIG. 2, a single switch

Be provided 21, which allows switching between the individual sub-beams back and forth, or one or more sub-beams on or off.

The tool according to the invention 18 according to Figure 1 has advantageously switching elements that allow one, two or all three

Partial rays exit from the device. For this purpose, for example, corresponding closable openings in the housing 17 of the tool device 18 or on the optical marking device itself may be provided by appropriate

Switching elements are activated. Alternatively, in the embodiment according to FIG. 1 with a single switching element, corresponding to the switching element 21 of FIG. 2, it is also possible to switch back and forth between the individual partial beams by releasing or closing the corresponding openings of the device.

In the operating concept of the tool device according to the invention 18 or 19, it is conceivable that all sub-beams 26,28,30 are emitted at once from the device 18 or 19, or that for each sub-beam own Schälfer is present, the corresponding Emission of this partial beam out of the device, activated.

In the exemplary embodiment of FIG. 2, the device according to the invention makes it possible for the tiles 12 to be laid, for example, from a diagonal 38 of the room, this diagonal 38 being marked by the projection line 28 which is at an angle of 45 ° both to the projection line 28 also to the projection line 30 runs. For this purpose, only a projection line 26 or 30 with the corresponding adjustment means parallel to a wall 14 or 15 must be oriented.

Also in the embodiment according to FIG. 2, the optical marking device 19 can be designed, for example, as a pendulum laser carrying the light sources 32, 34 and 36. Alternatively, the fixed arrangement of the marking device 19 in the housing of the tool device is possible when either the tool device 19 to adjust to an external reference plane, or the optical marking device within the housing 17 of the tool device 19 can be adjusted.

The optical marking device according to the invention or the tool device according to the invention with such an optical marking device is not limited to the exemplary embodiments shown in the figures. For example, the third projection line can also be realized by a contact rod or a cord which can be pulled out of the device or out of the housing at an angle of 45 ° to an optical projection line 26 or 28. Moreover, it is also possible to design the third projection line generating means such that a

Pivoting the third projection line is possible. In such an embodiment, the third projection line can assume any angle between 0 and 90 ° to the first and also to the second projection lines.

The adjustment means of the device according to the invention are not on the in the

For example, in addition to the pendulum laser function, the device according to the invention can also have dragonflies and / or mechanical adjustment means which make it possible, for example, to fix the unit vertically to a wall and to adjust it.

In addition, an electronic inclination sensor may be present in or on the device, which preferably allows automatic adjustment of the device, for example via a corresponding actuator.

In particular, the device according to the invention or the inventive

Tool device not limited to use when laying tiles. On the contrary, the tiles here merely serve as an illustrative example of the field of use of an optical marking device which, according to the invention, has means which generate a third projection line which makes an angle of 45 ° both to a first optical projection line and to a second optical line

Create projection line.

Claims

Anspriiche

Optical marking device with at least one light source (20, 22, 24, 32, 34, 36), and with means for generating a first optical projection line (26) on a reference surface (10), and with means for generating a second optical projection line (30) on the same reference surface (10), the second optical projection line (30) forming an angle of 90 ° with the first projection line (26), characterized in that means (20,22,24; 32,34,36 ), which produce a third projection line (28), wherein the third projection line is at an angle of 45 ° to the first optical projection line

(26) and makes an angle of 45 ° to the second optical projection line (30)

2. Apparatus according to claim 1, characterized in that the first, second and third projection line (26,28,30) span a plane (10).

3. Apparatus according to claim 1, characterized in that the third projection line (28) is an optical projection line.

4. Apparatus according to claim 2 and 3, characterized in that at least one projection line, (26,28,30) is fanned out perpendicular to the reference plane.

5. Apparatus according to claim 3, characterized in that the three optical projection lines (26, 28, 30) are produced by at least one light source (20, 22, 24; 32, 34, 36), in particular by at least one line laser (22) are.

6. Apparatus according to claim 3, characterized in that the three optical projection lines (26,28,30) by means of a single light source (20,22,24), in particular by means of a single laser signal (22) can be generated.

7. Apparatus according to claim 6, characterized in that the three optical

Projection lines (26,28,30) by means of at least one optical element from the single light source (20,22,24) can be generated.

8. Tool device (16) with a device according to one of claims 1 to 7.

9. Tool according to claim 8, characterized in that the device in the manner of a pendulum laser in a housing (17) of the power tool (16) is suspended.

10. Tool according to claim 8, characterized in that the device relative to the housing (17) of the tool device (16) is adjustable

11. Tool according to spoke 9 or 10, characterized in that the emission of the optical projection lines (26,28,30) from the housing (15) of the

Tool device (16) switchable, in particular individually switchable.