JPH0814899A - Laser beam three mode changeover device - Google Patents

Abstract

PURPOSE:To provide an inexpensive laser beam three mode changeover device which can changeover the laser beam mode among three laser beam modes, that is, a mode in which a single spot is illuminated in a straight line direction, a mode in which a straight line is illuminated and a mode in which upper and lower corners are illuminated in a vertical direction. CONSTITUTION:A laser converting member is movably attached in a housing 7 of a laser converting device 2 which is attached to a laser indicator 1. A first passage, a second passage and a third passage which are communicated with a means for converting a laser beam L emitted from the laser indicator 1 into any of three modes, are formed in the laser converting member which is also provided with changeover members 3a, 3b projected outside the housing 7. With this arrangement, a laser beam emitted from the laser indicator 1 is aligned with one of the first to third passages by pushing the changeover members 3a 3b, and then the laser beam L is emitted through the aligned passage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser light three-mode converter for converting laser light from a laser pointer into various forms.

[0002]

2. Description of the Related Art At present, a laser pointing device that emits a laser beam is used as a marking tool at a construction site such as construction, civil engineering, and electricity, or an instruction to point to a screen or posted material at a conference or a conference. It is used as a tool. Its usage is mostly to show landmarks or viewpoints. In this case, there are some devices that are devised so that the laser light can be converted to display a dot or a straight line when a viewpoint is pointed out by a laser pointing tool or when marking is performed.
For example, it is also used in a known device such as an optical pointing device as shown in Japanese Utility Model Publication No. 59-28409, and a device such as a vertical marking device, a so-called vertical device. In the case of marking out, it is a highly accurate device that uses a laser generator such as the actual Kaihei 3-128809, and is generally required for construction of large-scale buildings such as high-rise buildings. Is used. For example, there are a vertical marking device used by electrical contractors and the like, and a horizontal marking device used by civil engineering and construction companies.

[0003]

The above-mentioned laser marking device is a relatively expensive one, which is currently several hundred thousand. Therefore, even if it is necessary for so-called small-scale construction companies such as micro enterprises and small and medium-sized enterprises mainly for small-scale construction, it is not something that can be prepared due to economic burden or profit efficiency. The current situation is that it has not been done. For example, preparing a laser marking device similar to that used for large-scale construction regardless of the construction scale, or preparing both vertical and horizontal marking devices will reduce profits. Direct connection and little merit. In addition, there are few devices used for the contracted work that extend over several tens of meters from the installation point of the laser marking device, and the precision required by the laser marking device used for large-scale construction is not required. However, there was a situation in which the laser marking device could not be used even though recognizing that there is a case where the laser marking device may be required in case of hurrying construction or improving efficiency. Therefore, it is an object of the present invention to provide a laser light conversion device that converts the laser light in the horizontal direction from the laser indication device to the vertical direction by a simple operation, and also by using the laser indication device to which this laser light conversion device is attached. It is an object of the present invention to provide a laser light three-mode conversion device that can be sufficiently used for various types of work in small-scale locations such as indoor work such as offices.

[0004]

In order to achieve the above object, the present invention provides a laser indicator for emitting a laser beam,
A laser light conversion member movable with respect to the laser light,
Switching means for switching the position of the laser light converting member to the laser light, and means formed inside the laser light converting member for introducing the laser light into the inside and emitting the laser light forward as it is The first passage to
Inside the laser light converting member, a second passage formed inside the laser light converting member, having a means for introducing the laser light therein and irradiating the laser light as a straight line forward, And a third passage for forming the laser light into the inside to convert the laser light into a vertical direction with respect to its traveling direction,
A first vertical passage and a second vertical passage which are in communication with the third passage and are arranged vertically above and below the third passage, and at a crossing position between the third passage and the first vertical passage. A half mirror that emits a part of the laser light in the first vertical passage, and one that is provided downstream of the half mirror position in the third passage in the traveling direction of the laser light and reflects the laser light that has passed through the half mirror. A first total reflection mirror; and a second total reflection mirror that reflects the laser light reflected by the first total reflection mirror to the second vertical passage on the same vertical line as the laser light emitted to the first vertical passage, and And displacing the laser light conversion member with respect to the laser light from the laser indicator so that the laser light from the laser indicator is emitted to the first passage, the second passage, or the third passage. It is obtained so as to. In the present invention, the first vertical passage communicating with the third passage and the other means for reflecting the laser light from the second vertical passage to the outside are provided at the intersection of the third passage and the first vertical passage. And a half mirror that emits a part of the laser light in the first vertical passage, and a laser light that is provided downstream of the half mirror position in the third passage in the traveling direction of the laser light and that has passed through the half mirror And a first total reflection mirror for reflecting the laser beam passing through the half mirror on the downstream side of the half mirror position in the third passage. And a first total reflection mirror for reflecting the light in the passage.

[0005]

A laser in which a first passage for irradiating a point forward by passing a laser beam, a second passage for irradiating a horizontal line forward, and a third passage for irradiating a point vertically two directions vertically are formed inside. The light conversion member is movably attached to a laser pointer that emits laser light. The laser light converting member is moved by the switching means to switch the passage for emitting the laser light to any one of the first passage, the second passage, and the third passage, so that there are three kinds of modes of point, straight line, and vertical direction. Can be easily switched.

[0006]

First Embodiment Next, the present invention will be described. FIG.
FIG. 3 is a perspective view of a laser light conversion device according to the present invention.
FIG. 2 is a sectional view taken along the line AA ′ of FIG. FIG. 3 is a sectional view taken along line BB ′ of FIG. As shown in FIG. 1, a laser beam conversion device 2 is attached to a laser beam emission port of a laser pointer 1 that emits a laser beam that illuminates a point forward. The laser light conversion device 2 uses the laser light L (FIG. 3) from the laser indicator 1 to irradiate a point P forward, or a laser light 5 which marks a straight line QQ ′ forward.
Further, there are three different types of laser beams 6a, 6b for marking out two points R (ceiling ink) and R '(ground ink) in the vertical direction above and below each of the emission ports 15a, 15b (FIG. 2). The light is converted into laser light representing a mode for irradiation.

As shown in FIG. 6, the laser pointer 1
Is provided with a protrusion 8 having a laser light emission port 10, and the housing 7 of the laser light conversion device 2 is engaged with the protrusion 8. By fixing the protruding portion 8 and the housing 7 with fixing means 9 such as a screw, the laser indicator 1 and the laser light conversion device 2 are fixed. The housing 7 is provided with an emission port 20 that allows the laser light L from the laser pointer 1 to be emitted in the straight traveling direction of the light.
And emission ports 15a and 15b that allow the laser beam L from the laser pointer 1 to be emitted in the vertical direction with respect to the direction in which the light travels straight (FIGS. 1 and 2). Inside the housing 7 of the laser light conversion device 2, the laser light conversion member 1 is slidable left and right inside.
1 is provided. Changeover switch buttons 3a, 3 as changeover means are provided on both side surfaces of the laser light converting member 11.
b is fixed, and the changeover switch buttons 3a and 3b thereof are projected to the outside of the housing 7. By manually pressing the changeover switch buttons 3a and 3b, the position of the laser light converting member 11 in the housing 7 is displaced. That is, by pressing one of the changeover switch buttons 3a and 3b, the three types of laser light 4 in FIG.
Switching between modes 5, 6a and 6b. The method for displacing the laser light converting member 11 with respect to the housing 7, that is, the mode switching is not limited to the means for manually pressing the changeover switch buttons 3a and 3b.

As shown in FIGS. 2 and 3, inside the laser light converting member 11, three kinds of passages, that is, a first passage 12, a second passage 13 and a third passage 14 are formed. As shown in FIG. 3, the first passage 12 is provided so as to penetrate through the laser light conversion member 11, and there is no object that intercepts the passage. The first passage 12 is for emitting the laser light 4 that emits the point P forward. The second passage 13 is provided so as to penetrate the laser light conversion member 11, and serves as a means for irradiating a straight line forward to one end of the second passage 13 (one end on the side opposite to the laser indicator 1). A cylindrical glass rod (rod lens) 19 is present. The second passage 13 laser light L is set so as to enter the glass rod 19 from the outer circumference of the column in a direction perpendicular to the central axis. The second passage 13 is for emitting the laser light 5 that marks out the straight line QQ ′ in the front direction. The third passage 14 is provided with a half mirror and a total reflection mirror, which will be described later, in the middle of the third passage 14.
A laser beam 6a for reflecting the entered laser beam L in the vertical direction without penetrating therethrough, and marking out two points R (ceiling black) and R '(ground black) in the vertical direction. 6
It is for outputting b.

By pressing one of the changeover switch buttons 3a and 3b, the laser light converting member 11 moves within the housing 7, and the laser pointing device 1
The passage that coincides with the injection port 10 is switched to any one of the first passage 12, the second passage 13 and the third passage 14. When the first passage 12 is aligned with the ejection port 10, the ejection port 1
0, the first passage 12 and the emission port 20 communicate with each other (FIG. 3), and the laser light L emitted from the laser indicator 1
Passes through the ejection port 10, the first passage 12 and the ejection port 20 without any interruption, and irradiates the point P with a constant spot diameter in the front direction.

When the changeover switch button 3a is pushed in the S direction so that the second passage 13 is aligned with the ejection opening 10, the ejection opening 10, the second passage 13 and the ejection opening 20 are connected to each other (see FIG. 4). The laser light L emitted from the laser pointer 1 passes through the cylindrical glass rod 19 and is emitted from the emission port 20 to the outside. The glass rod 19 collects the passing laser light L at one focal point and diffuses and radiates the laser light L in a horizontal direction. The laser light L becomes a linear laser light 5 (straight light), and a straight line is formed on a wall or the like. To redeem.

When the changeover switch button 3b is pushed in the T direction to connect the third passage 14 to the emission port 10 (FIG. 5), the laser light L entering the third passage 14 is vertically moved from there. Change direction and shoot. Here, a structure in which the laser light L in the third passage 14 changes its direction up and down will be described with reference to FIG. Laser light conversion member 11
Inside, a first vertical passage 16 and a second vertical passage 17 that intersect vertically in the middle of the third passage 14 are formed. The first vertical passage 16 and the second vertical passage 17 are provided on the same straight line. The first vertical passage 16 is set to coincide with the injection port 15a formed in the housing 7, and the second vertical passage 17 is set to coincide with the injection port 15b formed in the housing 7. Further, three mirrors are arranged in the laser light conversion member 11 in the cross section of FIG. First, the half mirror 21 is arranged at a position where the third passage 14 and the first vertical passage 16 intersect. The half mirror 21 is inclined 45 degrees upward with respect to the traveling direction of the laser light L emitted from the emission port 10 of the laser indicator 1 (the laser light L irradiated on the half mirror 21 is reflected at right angles upward. Are arranged). Next, in the third passage 14, the total reflection mirror 22 is arranged at a position where the laser light L having passed through the half mirror 21 travels so that the reflection surface is located toward the half mirror 21. The total reflection mirror 22 is attached in a state of being slightly inclined downward with respect to the traveling direction of the laser light L. Further, in the second vertical passage 17, a total reflection mirror 23 is arranged slightly below the half mirror 21 so that the reflection surface faces the total reflection mirror 22. These total reflection mirrors 22
In the total reflection mirror 23, the laser light L passing through the half mirror 21 is reflected by the total reflection mirror 22 to reach the total reflection mirror 23, is reflected by the total reflection mirror 23, and is emitted from the emission port 15b. Then, the mutual positional relationship is set.

Next, the traveling path of the laser light L will be described. Laser light L emitted from the laser pointer 1
When the half mirror 21 irradiates the half mirror 21, most of the light is reflected upward at a reflection angle of 45 degrees, passes through the first vertical passage 16 and is radiated to the outside from the exit 15a, and the laser light 6a is directed toward the ceiling. As a result, the ceiling ink R is printed out. On the other hand, a part of the laser light L applied to the half mirror 21 passes through the half mirror 21 and goes straight on to reach the total reflection mirror 22, where the incident angle θ is.
It is incident at ₁ and reflected at the same angle. Total reflection mirror 22
The laser light L reflected by is incident on the total reflection mirror 23 at an incident angle θ ₂ and is reflected at the same angle. The laser light L reflected by the total reflection mirror 23 is emitted downward from the emission port 15b and marks out the ground ink R'on the floor surface. When inking the ceiling ink R and the ground ink R ′ in the vertical direction, the laser indicator 1 is installed so that the ceiling ink R and the ground ink R ′ are irradiated in the vertical direction. As mentioned above,
By arranging three mirrors, it is possible to convert the laser light emitted as one point into two points at the top and bottom in the vertical direction.

[0013]

Second Embodiment Next, FIG. 7 shows another structure in which the laser light L in the third passage 14 changes its direction up and down. The structure shown in FIG. 7 uses two mirrors.
7, the same reference numerals as those in FIG. 6 indicate the same parts. In the laser light conversion member 11, a first vertical passage 16 that extends upward and a second vertical passage 24 that extends downward vertically are formed in the middle of the third passage 14. The first vertical passage 16 and the second vertical passage 24 may not always be on the same straight line.
The first vertical passage 16 is provided so as to coincide with the injection port 15a formed in the housing 7. The housing 7 has an injection port 15 at a position corresponding to the second vertical passage 24.
c is provided. The half mirror 21 is arranged at a position where the third passage 14 and the first vertical passage 16 intersect. The total reflection mirror 22 is arranged at a position where the laser light L slightly advances from the position of the half mirror 21 so that the reflection surface is located on the half mirror 21 side. The total reflection mirror 22 reflects the laser light L that has passed through the half mirror 21,
The angle is appropriately inclined so that the laser beam L is irradiated downward from the emission port 15c. The laser light L entering the third passage 14 enters the half mirror 21 at an incident angle of 45.
The ceiling ink R is reflected once toward the ceiling and passes through the first vertical passage 16 and the ejection port 15a to mark out the ceiling ink R. On the other hand, the laser light L that passes through the half mirror 21 as it is is incident on the total reflection mirror 22 and reflected at the same angle, and passes through the second vertical passage 24, the emission port 15b, and the black ink R '. To do.

The position of the black ink R'shown at this time is set at a position, for example, 30 cm below the ejection port 15b so as to have a vertical relationship with the ceiling black R. That is, when the floor surface is 30 cm below the laser pointer 1, the ground ink R '
Is exactly in the vertical position with the ceiling ink R. This is set as an example because the height of the type of tripod that is often used to mount the laser indicator 1 is about 30 cm. When the height of the tripod is 30 cm or more or less, the ground ink R ′ is slightly displaced from the vertically lower side of the ceiling ink R. However, in FIG. 7, the laser light L is reflected by the half mirror 21.
Even if the ground ink R ′ is displaced from the vertically lower side of the ceiling ink R by shortening the distance between the point of irradiating the same and the point of irradiating the total reflection mirror 22 by going straight through the half mirror 21, the deviation is generally off. Is as short as a few millimeters. In marking in a small range such as indoors, even if the ground ink R ′ is slightly deviated from the vertically lower position of the ceiling ink R, the deviation is within the allowable range. As described above, by disposing the two mirrors, the laser beam L as one point can be converted into two points in the vertical direction.

In the above embodiment, the laser pointer 1
Although the laser light converting device 2 is attached to the laser indicator 1 while the laser light converting device 2 and the laser light converting device 2 are separately provided, the laser light converting device 2 may be incorporated in the laser indicator 1, and in that case, the embodiment The housing 7 is a laser indicator 1.
Also serves as the housing.

[0016]

As described above, the laser light conversion device according to the present invention has a simple structure and can switch between three types of modes: one point at the front, a straight line at the front, and two points vertically above and below. It is made possible to do. Conventionally, it was necessary to prepare individual devices such as a device dedicated to the vertical device, a straight line marking device, and a pointing device, but in the present invention, one device can have three types of functions. Can be used for multi-purpose construction. Further, in the present invention, one laser light converting member is provided with means for expressing three different modes, and the means for expressing each mode is switched to match the laser light, so that the structure is simple and very It will be cheap. In the present invention, the laser light conversion device can be configured separately from the laser indicator and can be attached to the laser indicator point, so that an inexpensive device can be provided to perform three types of functions. . Further, if a laser indicator equipped with the laser light conversion device of the present invention is installed on a tripod together with a level, and the laser indicator can be rotated 360 degrees in the horizontal direction or the vertical direction, horizontal marking of 360 degrees and Vertical marking is possible.

[Brief description of drawings]

FIG. 1 is a perspective view of a laser light three-mode converter according to the present invention.

FIG. 2 is a sectional view taken along the line A-A ′ in FIG.

FIG. 3 is a sectional view taken along the line B-B ′ in FIG.

FIG. 4 is a cross-sectional view showing an example when laser light conversion is performed.

FIG. 5 is a cross-sectional view showing an example of performing laser light conversion.

6 is an example of a cross-sectional view taken along the line C-C ′ in FIG.

FIG. 7 is an example of a cross-sectional view taken along the line C-C ′ in FIG.

[Explanation of symbols]

 1 Laser Indicator 2 Laser Light Converters 3a, 3b Switching Member 7 Housing 11 Laser Light Converting Member 12 First Passage 13 Second Passage 14 Third Passage 15a, 15b Ejection Port 20 Ejection Port 21 Laser Light Conversion Means 21 Half Mirror 22 First total reflection mirror 23 Second total reflection mirror

Claims (6)

[Claims] 1. A laser indicator for emitting a laser beam, a laser beam converting member movable with respect to the laser beam, a switching means for switching the position of the laser beam converting member to the laser beam, and a laser beam. A first passage that is formed inside the conversion member and that introduces the laser light into the inside and directly emits the laser light forward, and that is formed inside the laser light conversion member A second passage provided internally with means for introducing the laser light and irradiating the laser light as a straight line forward, and is formed inside the laser light conversion member, and introduces the laser light inside. And a third passage for converting the laser light into a vertical direction with respect to the traveling direction thereof, and a third passage that communicates with the third passage and is arranged vertically above and below the third passage. One vertical passage and a second vertical passage, and a half mirror that is provided at the intersection of the third passage and the first vertical passage and emits a part of the laser light to the first vertical passage, and in the third passage A first total reflection mirror that is provided on the downstream side of the half mirror position in the traveling direction of the laser light and reflects the laser light that has passed through the half mirror; and the laser light reflected by the first total reflection mirror. A laser beam emitted to a vertical passage and a second total reflection mirror for reflecting the laser beam on the same vertical line to emit the laser beam, and displacing the laser beam conversion member with respect to the laser beam from the laser indicator. The laser light from the laser pointing device is emitted to either the first passage, the second passage, or the third passage. 2. The laser according to claim 1, wherein a housing separate from the laser indicator for emitting laser light is attached to the laser indicator, and a movable laser beam converting member is provided in the housing. 3 mode converter of light. 3. The laser according to claim 1, wherein the means for irradiating the laser light as a straight line forward is a cylindrical glass rod, and the laser light is made incident on the axial center from the outer peripheral surface of the cylinder. 3 mode converter of light. 4. A laser indicator for emitting a laser beam, a laser beam converting member movable with respect to the laser beam, a switching means for switching the position of the laser beam converting member with respect to the laser beam, and a laser beam. A first passage that is formed inside the conversion member and that introduces the laser light into the inside and directly emits the laser light forward, and that is formed inside the laser light conversion member A second passage provided internally with means for introducing the laser light and irradiating the laser light as a straight line forward, and is formed inside the laser light conversion member, and introduces the laser light inside. A third passage for converting the laser light into a vertical direction with respect to the traveling direction thereof, and a first vertical passage communicating with the third passage and arranged vertically with respect to the third passage. A passage and a second vertical passage, a half mirror provided at an intersection of the third passage and the first vertical passage and emitting a part of laser light to the first vertical passage, and a half mirror in the third passage. It has a first total reflection mirror that is provided on the downstream side in the traveling direction of the laser light from the mirror position and that reflects the laser light that has passed through the half mirror to the second vertical path, and the laser light from the laser indicator is On the other hand, the laser light conversion member is displaced so that the laser light from the laser pointer is emitted to any one of the first passage, the second passage, and the third passage. apparatus. 5. The laser according to claim 4, wherein a housing separate from the laser pointer for emitting laser light is attached to the laser pointer, and a movable laser light conversion member is provided in the housing. 3 mode converter of light. 6. The laser according to claim 4, wherein the means for irradiating the laser light as a straight line forward is a cylindrical glass rod, and the laser light is made incident on the axial center from the outer peripheral surface of the cylinder. 3 mode converter of light.