JP2003294445A - Marking unit containing rangefinder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a marking unit containing a rangefinder without necessity of a direct range measuring means or an indirect range measuring means except a marking unit, by building the rangefinder by utilizing a constitution peculiar for the marking unit in the marking unit or without necessity of a plurality of persons to measure the range. <P>SOLUTION: A laser marking unit emits a laser beam from a laser beam source, diffuses the beam only in one direction to emit the laser line beam to a material to be illuminated. The marking unit measures the distance from a reference position of the unit to the material to be illuminated. The rangefinder 16 is one in which the laser beam source of the unit is used. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marking device having a built-in rangefinder capable of measuring the distance from the marking device to the object to be irradiated.

[0002]

2. Description of the Related Art Conventionally, there are the following various measuring methods for measuring a distance from a laser marking device to an object to be irradiated. 1. In order to measure the horizontal line light height of the laser marking device or the height of the marking device itself, after the marking device was installed, a direct distance measuring method using a pen or the like or a distance measuring means was used. . 2. If you want to measure the horizontal distance from the ground ink to the measured object such as a pillar, or if you want to find the ground ink point from the measured object such as a pillar to a certain distance, use a leveler that has a tape measure and a level. I used it, or I used a level different from the laser rangefinder to measure the distance, or I was looking for a black ink point. 3. If you want to vertically arrange poles etc. in a predetermined position,
Alternatively, when it is desired to arrange a plurality of poles or the like at an equal distance with respect to a certain surface, the position is determined by using a tape measure or a distance meter while using the marking device, and the pole or the like is arranged at that position. 4. When measuring the width of something from a long distance, there is also a method of using theodolite to perform indirect distance measurement by triangulation.

[0003]

However, the above-mentioned 1. According to this method, in order to measure the height of the horizontal line light of the marking device or the height of the marking device itself, the marking device and two tools or devices for directly measuring the distance are required. In addition, there is a drawback that the measurement takes time. The above 2. According to the method (1), the horizontal distance between the ground ink and the object to be measured requires a marking-out device and a plurality of tools or instruments such as a distance meter or a tape measure and a level, which is troublesome. Also, it takes time to level the product. The tape measure has the drawback that two people are required for the measurement. The above 3. According to this method, it is necessary to repeat the adjustment of the marking-out device and the distance measurement many times, which is troublesome. Also,
There is also the drawback that multiple workers are required. Above 4. According to the above method, there is a drawback that a plurality of workers are required to perform indirect distance measurement by triangulation using theodolite.

The present invention has been made in order to solve the above-mentioned problems of the prior art, and by incorporating a range finder into the mark-out device by utilizing a structure peculiar to the mark-out device, Other than that, it is an object of the present invention to provide a marking-out device that does not require a direct distance measuring means or an indirect distance measuring means, and that has a built-in rangefinder that does not require a plurality of persons for distance measurement.

[0005]

The invention according to claim 1 is
Laser light is emitted from the laser light source, this laser light is diffused in only one direction, and the irradiated object is irradiated with laser line light, or the laser point light is rotated to move horizontally or vertically as if it were line light. The laser marking device for irradiation is characterized in that the distance from the reference position of the marking device to the irradiated object is measured in the marking device main body.

The invention according to claim 2 is characterized in that, in the invention according to claim 1, the distance meter is a distance meter using a laser light source included in the marking-out device.

According to a third aspect of the present invention, in the second aspect of the invention, the laser light source irradiates at least one of ground black light, black and white light, point light for positioning, line light and cross line light. It is a laser light source for

The invention according to claim 4 is the invention according to claim 2 or 3.
In the invention described above, the rangefinder has an element for receiving a pulse-modulated laser light source that is reflected back by the irradiated body, and obtains the distance by calculating the phase difference between the light-transmitting side and the light-receiving side. It is characterized by being a thing. Claim 5
According to the invention described in claim 2 or 3,
The rangefinder has a position detection element that detects the light receiving position of the laser light source that is reflected back by the object to be irradiated, and calculates a plurality of distances between the objects to be irradiated at the light receiving position by this position detection element. It is characterized by

According to a sixth aspect of the present invention, in the first aspect of the present invention, the rangefinder uses an ultrasonic sound source and an ultrasonic detector mounted in the main body of the marking-out device, and the ultrasonic sound source is emitted. It is an ultrasonic range finder that measures the distance from the object to be irradiated to the object to be irradiated and then returns to the ultrasonic detector to measure the distance to the object to be irradiated.

According to a seventh aspect of the present invention, in the first aspect of the present invention, a light receiver for receiving the laser light from the laser light source is arranged at the irradiation position, and the light receiver is used for positioning the irradiation target and It is characterized in that the distance from the marking-out device to the irradiated object is measured.

According to an eighth aspect of the present invention, in the first aspect of the present invention, the staking-out line light is used as a distance measuring light, and the stop has a diaphragm capable of restricting the staking-out line light at an arbitrary spreading position. It is characterized in that the spread angle and line length of the marking-out line light are measured at the restriction position of the diaphragm.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a marking-out device incorporating a rangefinder according to the present invention will be described below with reference to the drawings. The embodiment shown in FIG. 1 is configured as so-called plumb bob. In FIG. 1, the plumb bob body 10 is installed by a support 11 on an appropriate vertical surface such as a building wall in a vertical posture. Plumb bob body 10
A horizontal maintaining mechanism 15 is supported therein by horizontal shafts 13 and 14 which are orthogonal to each other. Horizontal maintenance mechanism 1
A distance meter 16 is hung from the lower end of 5. Figure 1
Although not explicitly shown in FIG. 1, a laser light source unit that always keeps a predetermined posture by the horizontal maintaining mechanism 15 and emits ground black light from the emission window 32 at the lower end of the main body 10 is attached. The reflected light from the ground ink formed on the floor surface by the ground ink light is received by the distance meter 16, and the distance to the ground ink point, that is, the mounting height position of the ink ejector from the ground ink point is measured. In this case, using the upper end face or the lower end face of the plumb bob body 10 as a reference position, the plumb bob body 1 from the black ink point
The distance to the upper end surface or the lower end surface of 0 is calculated and measured.
The measurement result is displayed on the display element 12 provided on the front surface of the swing body 10. The display element 12 can be composed of, for example, a liquid crystal display element (LCD).

In the embodiment shown in FIG. 2, a plumb bob which is capable of emitting horizontal line light is provided with a background light emitting function and a height measuring function as shown in FIG. Figure 2
In the above, the light source unit 20 is provided on the leveling mechanism 15.
Are listed together. The light source unit 20 is composed of, for example, a semiconductor laser (LD) and emits laser light in the horizontal direction. A rod lens 18 for diffusing the outgoing light only in the horizontal direction is arranged on the outgoing optical path. The diffused light in the horizontal direction is emitted from the emission window 17 to the outside, and is radiated to the wall that is the object to be illuminated to draw a horizontal line by the laser light. A part of the laser light emitted from the light source unit 20 is split by the beam splitter and emitted downward from the emission window 32 along the vertical line. The laser light emitted downward is for forming ground ink,
Distance meter 16 that returns the laser light reflected from the ground ink
The light is received and the distance from the plumb bob body 10 to the ground ink, that is, the height position of the plumb bob body 10 is measured. In this case, the measurement reference position can be the upper end or the lower end of the plumb bob body 10, or the emission height position of the horizontal line light, and either reference position can be selected. The light source may be two independent light sources for horizontal line light and black ink, or one light source may be split by a beam splitter for horizontal line light and black ink, as in the above example. Further, one light source may be shared by the marking-out device or the plumb bob and the distance meter, or may be another light source.

The embodiment shown in FIG. 3 is substantially the same in function as the embodiment shown in FIG. 2, but the specific structure is different. In FIG. 3, the horizontal maintaining mechanism 15 has a light source unit that emits laser light downward along a vertical line as in the embodiment shown in FIG. A pendulum hangs vertically from the horizontal maintaining mechanism 15 so that the laser beam passes along the center line of the pendulum.
A beam splitter 21 is arranged on the path of the laser light so as to reflect a part of the laser light in the horizontal direction. A rod lens 22 is arranged on the path of the laser light in the horizontal direction, diffuses the laser light only in the horizontal direction, and emits the laser light to the outside through an emission window 19, and the laser light is applied to the wall surface that is the irradiation target. It is designed to draw a horizontal line.

A light receiving objective lens 23 and a light receiving system 24 are attached to the pendulum. The light receiving system 24 receives the laser beam reflected from the ground ink and returned, and moves down. The height position of the main body 10 is measured. The measurement reference position in this case is
It can be set to the upper end or the lower end of the plumb bob body 10 or to the emission height position of the horizontal line light, and either reference position can be selected. In this example, one light source is split by a beam splitter,
The horizontal line and ground ink may be provided separately, or
A light source for the range finder may be separately provided.

The plumb bob as shown in FIGS. 1 to 3 has substantially the same structure and function as the marking-out device. The embodiment described below is configured as a marking device. Figure 4
Shows an example of a stakeout device with a ground ink distance meter. In FIG. 4, the ink maker main body 40 is installed on the floor by the tripod 26. The ink ejector main body 40 has an emission window 39, and laser light diffused only in the horizontal direction is emitted from the emission window 39, and the irradiated object 27 forming a vertical surface and a vertical surface orthogonal to the irradiation object 27. The illuminator 28 is adapted to illuminate a horizontal line 29. The main body 40 of the black ink dispenser can also form the ground ink 25 on the floor surface on which it is installed. Further, the built-in range finder can measure the distance from the horizontal line, which is the reference position, to the ground ink 25, that is, the black ink. The height L of the dispenser body 40 can be measured.

FIG. 5 shows an example of the internal structure of the marking-out device. The leveling mechanism 15 is supported in the ink maker main body 40 via the tower 30. Leveling mechanism 15
A light source unit 20 is integrally mounted on the top of the. A distance meter 16 is hung from the leveling mechanism 15. A weight 31 is attached to the outside of the range finder 16 so that the range finder 16 and the light source unit 20 integrated with the range finder 16 can always maintain a predetermined posture. The light source unit 20 emits laser light in the horizontal direction,
The rod lens 18 spreads the laser light only in the horizontal direction so that the irradiated object is irradiated with the horizontal line light. The horizontal laser light emitted from the light source unit 20 is partially divided and emitted downward in the vertical direction, and this becomes ground ink light. However, the horizontal line light source and the ground ink light source may be provided separately. The reflected light of the ground ink is received by the distance meter 16 and the distance from the ground ink is measured. The light receiving objective lens 23 is attached to the lower end of the range finder 16, and the emission window 32 is formed at the lower end of the stakeout device main body 40.

The ground ink may be represented by a point, a line, or an intersection of two orthogonal lines. The distance measuring method of the rangefinder is not particularly limited, but, for example, depending on the time difference from the time when the laser light is emitted from the light source unit to the time when it is reflected at the black ink point and received by the light receiving system of the rangefinder. The distance L can be measured. Alternatively, it has an element for receiving a pulse-modulated laser light source that returns after being reflected by the irradiation target,
The distance L can be measured by calculating the phase difference between the light transmitting side and the light receiving side. Alternatively, the range finder is constructed by arranging a position detecting element (PSD) in its light receiving system, and the laser beam reflected at the black ink point is received by the position detecting element to calculate the distance L. Good. If such an optical distance meter is configured, the light source unit originally possessed by the marking device can be used as the light source unit of the distance measuring device, so that the marking device with the distance measuring device can be easily configured. be able to. The distance L is at least a few meters
Therefore, the range finder may be a range finder using ultrasonic waves instead of the one using laser light as described above.
Such a range finder using ultrasonic waves or a range finder using the above position detecting element can be reduced in cost.

Next, the embodiment shown in FIG. 6 will be described. This embodiment is an example of a mark-out device with a built-in range finder that uses a liner. In FIG. 6, there is a horizontal maintaining mechanism as shown in FIG. 5 in the ink maker main body 40, and the laser light which is expanded only in the horizontal direction is emitted from the light source unit through the emission window 39, and the horizontal maintenance mechanism is emitted. A horizontal line 29 is irradiated onto the irradiation bodies 27 and 28. A part of the horizontal laser light emitted from the light source unit is split by the beam splitter and emitted upward in the vertical direction, so that the ceiling 33 is formed on the ceiling surface.
In this case as well, the light source for the horizontal line and the light source for the crosshair may be provided separately. A range finder is provided in the main body 40 of the marking-out device, and the reflected light from the marking 33 is received to set the reference position,
For example, the height L from the horizontal line light emission position to the top 33
Is calculated. The stick 33 may have a dot shape, a line shape, or a cross line shape. The range finder may be a combination of a laser pointer and an ultrasonic range finder, or a position detecting device using the PSD as described above.

Next, the embodiment shown in FIG. 7 will be described. This embodiment is an example of a marking device equipped with a rangefinder that measures a horizontal distance. In FIG. 7, a laser beam for irradiating the ground ink 25 is emitted from the black ink main body 40, and the irradiated body 27 is passed through the emission window 39.
The horizontal line 29 is illuminated on the. Further, a rangefinder is horizontally mounted in the main body 40 of the marking-out device, and a horizontal line 29 projected on the irradiation target 27 is provided.
The reflected light from the marking-out light reflection point 35 is received by the rangefinder, and the horizontal distance L from the ground ink 25 emitted by the marking-out device to the marking-out light reflection point 35 is measured by calculation. It is like this.

FIG. 8 shows its internal structure. In FIG. 8, the horizontal maintaining mechanism 15 is supported in the ink maker main body 40 via the goggle 30, the distance meter 38 is integrally attached to the upper side of the horizontal maintaining mechanism 15, and the horizontal maintaining mechanism 15 is provided below the horizontal maintaining mechanism 15. The ground ink pointer 36 is integrally attached.
A weight 31 is provided outside the ground ink pointer 36 so that the horizontal maintaining mechanism 15, the ground ink pointer 36, and the distance meter 38 always maintain a predetermined posture. A part of the laser light is divided and emitted in the horizontal direction from the emission window 39, and the marking light reflection point 35 is formed on the irradiation target 27. The light source for horizontal light may be another independent light source. A distance meter 38 receives the reflected light from the mark-out light reflection point 35 through an objective lens 37 and measures the distance L by calculation. A horizontal line 29 and a vertical line 46 are emitted from the marking-out device main body 40, and an intersection point between the horizontal line 29 and the vertical line 46 is designated as a marking-out light reflecting point 35.
The horizontal distance between the ground ink 25 and the ground ink 25 may be measured.

Next, an embodiment of the marking-out device capable of setting vertical lines uniformly at a plurality of locations will be described with reference to FIG. As shown in FIG.
Inside, there is a laser light source unit capable of emitting ground ink irradiation light, horizontal line irradiation light and vertical line irradiation light, and the ground ink 25 is provided on the floor surface and the horizontal line 29 and vertical lines are provided on the irradiation target. The line 46 is illuminated. The horizontal line 29 and the vertical line 46 intersect on the irradiation target. The marking-out device main body 40 can rotate in the horizontal plane about the ground-ink irradiation light, whereby the irradiation position of the vertical line 46 can be changed. In addition, a range finder is provided in the main body 40 of the ink maker, and the horizontal distance from the intersection of the horizontal line 29 and the vertical line 46 on the illuminated surface to the ground ink 25 can be measured.

In FIG. 9, the marking-out device directly faces the illuminated surface.
However, if the laser light is irradiated at a right angle to the surface to be irradiated,
Horizontal line 29 and vertical line 46 on the illuminated surface
From the reference point to the ground ink 25
Measure the horizontal distance and set this to L ₁From the above reference point
Horizontal when the distance a is horizontal in the irradiation surface
From the intersection of the line 29 and the vertical line 46 to the ground ink 25
The horizontal distance of L_TwoThen, L₁, L_TwoAnd the relationship of a
Is a = √ (L_Two ^Two-L₁ ^Two) Becomes In addition, in the horizontal direction from the above reference point
Horizontal line 29 and vertical line when the distance is 2a
The horizontal distance from the intersection with the in 46 to the ground ink 25 is L_ThreeWhen
Then L₁, L_ThreeThe relationship between 2a is 2a = √ (L_Three ^Two-L₁ ^Two) Becomes Similarly, based on the Pythagorean theorem, 3
a, 4a, ... Can be obtained.

In other words, while horizontally rotating the marking device, the horizontal distance from the intersection of the horizontal line 29 and the vertical line 46 on the illuminated surface to the ground ink 25 is measured by a rangefinder built in the marking device. , L ₁ , L ₃ , L ₃ , ..., It is possible to obtain positions at regular intervals in the horizontal direction on the irradiated surface. Therefore, for example, when trying to stand a plurality of columns 43 at regular intervals, it is possible to easily obtain the positions of the plurality of columns 43 by using the marking device according to the embodiment shown in FIG. 9. Also,
If the pillar 43 is erected along the vertical line 46, there is also an advantage that the verticality of the pillar 43 can be accurately obtained. The above-mentioned a is input to the marking device in advance, then L ₁ is measured and stored, and thereafter, the distance to the irradiation surface is calculated in real time while rotating the marking device by the horizontal rotation mechanism. , Whenever the operation result becomes L ₂ , L ₃ , ...
It is better to output a signal. Examples of signal output include visual display on a display and display by sound.

The embodiment shown in FIG. 10 uses the same marking device as in the embodiment shown in FIG. 9 to calculate the horizontal rotation angle of the marking device. In FIG. 10, it is assumed that the mark-out device having the horizontal rotation mechanism is horizontally rotated within an appropriate rotation angle range θ. Further, the horizontal distance from the intersection of the horizontal line 29 and the vertical line 46 to the ground ink 25 on the irradiated surface at the time of starting rotation is L ₁ . There is a moment when the marking device faces the illuminated surface due to the rotation of the marking device. This value L ₂ is stored at the moment when the value measured by the distance meter becomes the smallest value. Further, the marking device is rotated in the horizontal direction and stopped at a predetermined rotation position. The distance from the marking-out device to the illuminated surface at this time is calculated in real time, and this is set as L ₃ . By knowing L ₁ , L ₂ , and L _{3 in} this way, the moving distance X of the vertical line 46 on the irradiation surface can be obtained by applying the Pythagorean theorem.

It is also possible to measure the distance in the vertical direction on the irradiated surface according to the same idea as the embodiment shown in FIGS. 9 and 10. FIG. 11 shows that embodiment. In FIG. 11, the ink maker main body 40 uses a uniaxial pendulum,
The irradiation target has a vertical line 46 and a light source unit capable of irradiating a cross line or point light perpendicular thereto. The one axis is a horizontal axis parallel to the plane of spread of the laser beam for forming the vertical line 46. Therefore, by the vertical rotation mechanism built in the stakeout device main body 40, the stakeout device main body 4 in a vertical plane including the above-mentioned one axis.
When 0 is tilted, the cross line or point light perpendicular to the vertical line 46 moves in the up-down direction along the vertical line 46 on the irradiation surface.

Therefore, based on the same idea as that of the embodiment described with reference to FIG. 10, it is assumed that the marking device is rotated in the vertical direction within an appropriate rotation angle range θ. The horizontal distance from the intersection of the horizontal line 29a and the vertical line 46 on the illuminated surface at the start of rotation to the ground ink 25 is L ₁ . There is a moment when the marking device faces the illuminated surface due to the rotation of the marking device. This value L ₂ is stored at the moment when the value measured by the distance meter becomes the smallest value. Further, the marking device is rotated in the vertical direction and stopped at a predetermined rotation position. The distance from the marking-out device to the illuminated surface at this time is calculated in real time, and this is set as L ₃ . In this way, L ₁ ,
By knowing L ₂ and L ₃ , the Pythagorean theorem is applied and the moving distance X of the vertical line 46 on the irradiation surface is X.
Can be asked. It is also possible to mount an inclination sensor or an inclinometer and display an inclination line on the side surface of the stake out device main body 40. It is also possible to measure the tilt angle. The rotation drive mechanism in the embodiments shown in FIGS. 9, 10 and 11 may be manually operated or may be controlled by a motor.

An example of the internal structure of the embodiment shown in FIG. 11 is shown in FIG.
2, shown in FIG. In FIG. 12 and FIG. 13, the horizontal maintaining mechanism 15 is supported in the main body 40 of the ink maker through the tower 30. The horizontal holding mechanism 15 is a pendulum-like member that can swing about a single shaft 48 in a vertical plane, and has a weight 31 and a weight 51 so as to assume a predetermined hanging posture. A light source unit 2 having a rod lens 18 for irradiating a horizontal line light with a laser beam is provided above the horizontal maintaining mechanism 15.
0 is attached integrally, and a range finder 38 for measuring the distance to the illuminated surface by receiving the laser light in the horizontal direction from the illuminated surface is attached. A rotary operation knob 49 is attached substantially integrally with the leveling mechanism 15. The rotary operation knob 49 is attached to the tip of the shaft extending in the direction orthogonal to the shaft 48, and can be rotated from the outside of the squirrelsticker main body 40.
By rotating the rotating operation knob 49, the entire swinging body including the horizontal maintaining mechanism 15, the light source unit 20, and the distance meter 38 is forcibly tilted in a direction orthogonal to the swinging direction of the pendulum about the shaft 48. be able to.

As described above, by rotating the rotating operation knob 49, the horizontal lines 29a, 29b and 29c can be irradiated to positions having different heights as shown in FIG. 11, and the surface to be irradiated at that time can be irradiated. Distance to L ₁ , L ₂ , L ₃
Can be calculated and measured by the range finder 38. As shown in FIG. 13, the tilt sensor 5 that cooperates with the rangefinder 38
Two are provided. The moving distance of the laser beam on the irradiation surface can be calculated based on the inclination angle of the marking-out device detected by the inclination sensor 52 and the distance to the irradiation surface measured by the distance meter 38.

When the marking device is used outdoors, or when the distance from the marking device to the illuminated surface is long,
It may be difficult to visually recognize the line light on the illuminated surface. In such a case, a rotating type marking device that rotates the laser point light and irradiates it in a horizontal or vertical direction as if it were line light may be used. Alternatively, a light receiver may be used together. Therefore,
A distance meter may be built in this light receiver. The embodiment shown in FIG. 14 is an example. In FIG. 14, a light receiver 50
Has a built-in rangefinder. The light receiver 50 has, for example, a photodiode as a light receiving element. The light receiver 50 also has a light receiver ground ink 55 as a reference point.

On the other hand, the main body 40 of the marking-out device also has a range finder so that the distance L ₁ from the reference position to the ground marking 25 can be measured. The distance measurement standard in this case is 1. From the light receiver black ink 55 to the light receiving portion of the light receiver 50.2. Receiver ink 55
To the bottom of the light receiver 50, 3. Any one from the ground ink 25 of the marking device to the upper portion of the light receiver 50 is selected. In addition, the horizontal distance L ₂ from the marking device to the light receiver 50
There is also a distance measurement standard for 1. From the black ink 25 of the ink ejector to the black ink 55 of the light receiver 2. 2. From the ground ink 25 of the marking device to the front surface of the light receiving device 3. It is possible to select one from the ground ink 25 of the marking device to the rear surface of the light receiver 50.
The range finder may be provided on the light receiver 50 side. The rangefinder system is arbitrary. The distance is displayed on either the light receiver 50 or the marking-out device main body 40 or both.

As described above, in the case where the squeezed line light is used as the distance measuring light, when the diaphragm that can regulate the squeezed line light at an arbitrary spread position is provided, the regulation of the diaphragm is performed. It is possible to measure the spread angle and line length of the marking line light at the position. The outline of the embodiment is shown in FIG. In FIG. 15, the light source unit 20 that constitutes a part of the marking-out device
Has a semiconductor laser 57 as a light source and also has a rod lens 22.
Can be irradiated. The light source unit 20 also has a diaphragm adjusting mechanism 58 on the front side of the rod lens 22, and restricts the spread of the laser light expanded only in the horizontal direction by the rod lens 22 by the diaphragm adjusting mechanism 58 at an arbitrary spreading position. You can do it. Light receiving system 2 that constitutes a part of the rangefinder together with the light source unit 20
4 are installed side by side.

16 and 17 show how the laser light spread is regulated by the marking-out device having the diaphragm adjusting mechanism 58 as described above, and how the distance is measured and the area is measured as an object to be measured. 16 and 17, the diaphragm adjustment mechanism 58
The aperture of the diaphragm 59 included in is manually adjusted to match the ray length l on the irradiated surface with a predetermined value x. The distance L from the reference point of the marking device to the horizontal line 29 is measured by the range finder as described above. After that, the divergence angle 2θ of the laser light can be obtained, and the ray length 1 can be obtained by a trigonometric function. However, it is not practical to obtain the spread angle 2θ because of a large error.

Therefore, the diaphragm 59 is left as it is, and the mode is switched to the short-distance measurement mode like the measurement in the black ink direction.
As shown in FIG. 17, the distance L ₁ from the reference point of the marking-out device to the horizontal line 29 is measured by a distance meter, and the length L ₂ of the horizontal line 29 on the irradiated surface is measured using an appropriate tool. Measure directly. The values of the spread angles 2θ and θ can be known from these L ₁ and L ₂ . In other words, the _{tanθ = (L 2/2)} / L 1 θ = tan -1 {(L 2/2) / L 1}. If θ and L shown in FIG. 16 are known, the horizontal length x of the irradiation surface can be obtained. That is, tan θ = (x / 2) / L x = 2L tan θ = 2L tan [tan ⁻¹ {(L ₂ /
2) / L ₁ }]

Similarly, the object to be measured 6 on the surface to be irradiated is measured.
The vertical distance y of 1 can also be determined. The distance y in the vertical direction can be obtained by using the measuring means shown in FIGS. 11 to 13. By multiplying x and y thus obtained, the area of the DUT 61 can be obtained.

The divergence angle 2θ of the laser beam may be obtained by the calculation of the range finder as described above.
As shown in FIG. 8, it may be directly read using the protractor 60. The diaphragm adjustment mechanism 58 in the above-described embodiment may be mechanical or electrically controlled. In the case of a mechanical one, it is preferable to use a mechanism such as a gear that can be precisely adjusted.

[0037]

According to the present invention, the laser marking device has a built-in range finder which measures the distance from the reference position of the marking device to the object to be irradiated in the marking device body. The marking and distance measurement can be performed by one device, and the labor for marking and distance measurement can be reduced. Further, since the laser light emitted from the marking device can be used for distance measurement, a marking device having a distance measuring function can be provided with a simple structure at low cost. There is an advantage that the adjustment becomes easy.

[Brief description of drawings]

1A and 1B show an example of a plumb bob which is an embodiment of the present invention, FIG. 1A is an external front view, FIG. 1B is a simplified front view showing an internal mechanism, and FIG. 1C is a simplified internal mechanism. Side view,
(D) is a bottom view.

2A and 2B show another example of plumb bob, which is an embodiment of the present invention, FIG. 2A is an external front view, FIG. 2B is a front view showing a simplified internal mechanism, and FIG. 2C is a simplified internal mechanism. Is a side view, and (d) is a bottom view.

3A and 3B show another example of the plumb bob which is an embodiment of the present invention, FIG. 3A is an external front view, FIG. 3B is a front view showing a simplified internal mechanism, and FIG. 3C is a simplified internal mechanism. The side view which is shown in FIG.

FIG. 4 is a perspective view showing an embodiment of a marking-out device incorporating a rangefinder according to the present invention.

FIG. 5 is a side view showing a simplified internal mechanism of the embodiment.

FIG. 6 is a perspective view showing another embodiment of the marking out device incorporating the rangefinder according to the present invention.

FIG. 7 is a perspective view showing another embodiment of the marking-out device incorporating the rangefinder according to the present invention.

FIG. 8 is a side view showing a simplified internal mechanism of the embodiment.

FIG. 9 is a perspective view showing still another embodiment of a marking-out device incorporating a rangefinder according to the present invention.

FIG. 10 is a perspective view showing still another embodiment of a marking-out device incorporating a rangefinder according to the present invention.

FIG. 11 is a perspective view showing still another embodiment of a marking-out device incorporating a rangefinder according to the present invention.

FIG. 12 is a perspective view showing a simplified internal mechanism of the embodiment.

FIG. 13 is a plan view showing an internal mechanism of the embodiment.

FIG. 14 is a perspective view showing still another embodiment of a marking-out device incorporating a rangefinder according to the present invention.

FIG. 15 is a cross-sectional view showing only a main part of still another embodiment of a marking-out device incorporating a rangefinder according to the present invention.

FIG. 16 is a perspective view schematically showing how the measurement target is measured according to the above embodiment.

FIG. 17 is a plan view of the same.

FIG. 18 is a perspective view schematically showing another state of measurement according to the above embodiment.

[Explanation of symbols]

10 Pitch body 12 display elements 15 Horizontal maintenance mechanism 16 rangefinder 20 light source unit 24 Light receiving system 25 ground ink 27 Irradiated body 29 horizontal lines 38 Rangefinder 40 Main body

Claims (8)

[Claims] 1. A laser beam is emitted from a laser light source,
A laser marking device that diffuses this laser light in only one direction to irradiate the irradiated object with laser line light, or rotates the laser point light to irradiate it as if it were line light in the horizontal or vertical direction. A marking device with a built-in range finder, which measures the distance from the reference position of the marking device to the irradiated body in the dispensing device body. 2. The marking device with a built-in rangefinder according to claim 1, wherein the rangefinder is a rangefinder utilizing a laser light source included in the marking device. 3. The rangefinder according to claim 2, wherein the laser light source is a laser light source for irradiating at least one of ground black light, black and white light, point light for positioning, line light, and cross line light. Sumitizer with built-in. 4. The range finder has an element for receiving a pulse-modulated laser light source that is reflected back by an object to be irradiated, and obtains a distance by calculating a phase difference between a light-transmitting side and a light-receiving side. A marking device having the range finder according to claim 2 or 3 built therein. 5. The rangefinder has a position detecting element for detecting a light receiving position of a laser light source which is reflected back by the object to be irradiated, and a plurality of distances between the objects to be irradiated are detected at the light receiving position by the position detecting element. A marking device having a built-in rangefinder according to claim 2 or 3, which is for calculating. 6. The range finder uses an ultrasonic sound source and an ultrasonic detector mounted in the main body of the ink maker, and after the ultrasonic sound source is emitted, it is reflected by an object to be irradiated and becomes an ultrasonic detector. The marking device with a built-in rangefinder according to claim 1, which is an ultrasonic rangefinder for measuring a time until returning to measure an object to be irradiated. 7. A light receiver for receiving laser light from a laser light source is arranged at an irradiation position, and this light receiver measures the position of the irradiation target and the distance from the marking-out device to the irradiation target. The marking-out device with a built-in range finder according to claim 1, wherein 8. The stencil line light is used as distance measuring light, and a diaphragm is provided which can regulate the stencil line light at an arbitrary spreading position. The mark-out device with a built-in range finder according to claim 1, wherein a line length is measured.