JPH08285594A - Laser emitting device - Google Patents

Abstract

PURPOSE: To rapidly align only by one operator by receiving the reflected light from a reflecting member, and outputting the analog signals corresponding to a plurality of laser beam reflectors. CONSTITUTION: When a power switch is closed, a laser beam 3 is rotatably emitted from a laser beam emitting unit 4 to form the vertical surface of the beam 3. A drive knob is operated to rotate the unit 4 in the horizontal direction until the beam 3 coincides with the reference mark 36 of an L-shaped plate 6. When the beam 3 is emitted to laser beam reflectors 41 to 44 on the plate 6 and the reflected lights are received by a photoreceiver, any LEDs 24a to 24c is lit in response to the detection signal output from the photoreceiver, and buzzer sound is simultaneously rung. The operator rotates the unit while confirming the light or the sound to bring the beam 3 into coincidence with the scale 36, and hence the beam 3 coincides with two points (a), (b).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser projecting device, and more particularly to a laser used for rotationally projecting a laser beam in construction work or civil engineering work to perform measurement (marking or marking) or surveying work. The present invention relates to a light projecting device.

[0002]

2. Description of the Related Art Conventionally, as a laser projecting device of this type, for example, those shown in FIGS. 6 and 7 are known. This vertical surface laser projection device is composed of a main body 100, a leveling unit 101, and an alignment unit 102.

Inside the main body 100, there is provided a laser beam projector 104 for emitting a laser beam 103 so as to form a vertical plane. This laser beam projector 1
Reference numeral 04 denotes a laser diode 105, a collimator lens 106 that collimates a laser beam emitted from the laser diode 105 and emits it in a horizontal direction, and is arranged between the laser diode 105 and the collimator lens 106, and the main body 100 is tilted. Compensator 107 for compensating for the above, rotating barrel 109 supported by main body 100 via bearing 108 so as to be vertically rotatable, and horizontal laser from collimator lens 106 fixed to this rotating barrel 109. It is composed of a penta mirror 110 that guides the beam in the vertical direction, and a motor 112 that rotates the rotating cylindrical body 109 via a transmission belt 111.

A penta mirror 1 is attached to the rotary cylinder 109.
An opening 109 a for passing the laser beam 103 in the vertical direction from 10 is formed. On the other hand, in the main body 100, a large number of openings 100a for emitting the laser beam 103 from the openings 109a to the outside are continuously formed over substantially the entire circumference.
A transparent protective glass 113 is fixed to a (see FIG. 7). By rotating the rotary cylinder 109 by the motor 112, the laser beam 103 that passes through the protective glass 113 and is emitted to the outside is scanned in the 360 ° direction within the vertical plane.

The leveling unit 101 comprises an upper plate 114 fixed to the lower part of the main body 100 and a lower plate 116 attached to the upper plate 114 via three leveling screws 115.

The alignment unit 102 includes an alignment metal fitting 118 having three legs 117a to 117c having sharp tips, and the metal fitting 118 for leveling the unit.
01 fixing screw 119 for detachably fixing to the lower plate 116
Consists of Of the three legs 117a to 117c, the leg 1
17a has a tip whose luminous center is 1 of the laser beam 103.
It is a beam reference leg that matches 03A.

FIG. 8 is a block diagram of the sensor device 120.

The light receiving section 133 is a pair of wedge type light receiving elements 1
33a, 133b, wedge-shaped light receiving element 133a,
133b is connected to a detection circuit 135 including an amplification circuit, a peak hold circuit, etc., and the detection circuit 135 is connected to the comparison circuit 13
6 is connected. The comparison circuit 136 compares the detection signals detected by the wedge-shaped light receiving elements 133a and 133b. The comparison circuit 136 includes an indicator lamp 124 and a buzzer 12.
5, the indicator lamp 124 displays the light receiving position of the laser beam 103 by the light and the buzzer 125 displays the sound by the sound based on the comparison result of the comparison circuit 136.

In the above-mentioned vertical plane laser projecting device, as shown in FIG.
As shown in FIG. 2, the alignment work for performing the marking work (two points a and b at a distance from the laser beam 103) is performed.
First, the beam reference leg 1
Accurately match the tip of 17a with point b.

Next, the sensor device 120 for receiving the laser beam 103 is arranged so that the center position of its light receiving portion 133 coincides with point a.

In this state, the laser beam projecting device 104
A laser beam 103 is emitted so as to form a vertical plane.

The entire device is horizontally rotated about the tip of the beam reference leg 117a so that the laser beam 103 coincides with the center position of the light receiving portion 133 of the sensor device 120. At this time, the indicator lamp 124 is illuminated by the light, and the buzzer 1
Reference numeral 25 indicates the light receiving position of the laser beam 103 by sound.

When the laser beam 103 coincides with the center position of the light receiving portion 133 of the sensor device 120, the alignment work is finished and the marking work is started.

[0014]

However, in the above-mentioned conventional technique, the vertical surface laser projecting device is arranged so that the laser beam 103 coincides with the center position of the light receiving portion 133 of the sensor device 120 when performing the alignment work. Since the whole must be rotated in the horizontal direction around the tip of the beam reference leg 117a, for example, when the two points a and b for matching the laser beam 103 are at positions greatly separated from each other, the vertical plane laser projection is performed. Two persons are required, an operator for rotating the entire optical device and an operator for confirming whether or not the laser beam 103 coincides with the center position of the light receiving portion 133 of the sensor device 120. There is a problem that the workability is poor because it is necessary for the workers to communicate with each other by making a voice or using a transceiver.

Since the light receiving portion 133 of the sensor device 120 has a width in the longitudinal direction of only about 50 mm, when the distance between the two points a and b becomes long, a slight horizontal deflection (rotation) of the laser projecting device occurs. The laser beam 103 is received by the light receiving unit 133.
There is a problem that it is easy to get out of the position and the alignment work time becomes long.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a laser projecting apparatus capable of quickly performing alignment work by only one operator.

[0017]

In order to solve the above-mentioned problems, the laser projecting device according to the invention of claim 1 has one end edge of a laser beam irradiation surface irradiated with a laser beam swept within a predetermined plane. A reflecting member having a reference mark provided and a plurality of laser beam reflecting portions arranged in the sweep direction of the laser beam, and receiving reflected light from the reflecting member to correspond to the plurality of laser beam reflecting portions. A light projecting means for outputting an analog signal for outputting a digital signal when the analog signal corresponding to the laser beam reflecting portion detected by the light receiving means reaches a constant value. Conversion means, and a display for displaying the relative position of the reference scale and the laser beam based on the digital signal from the analog / digital conversion means. And a stage, the laser beam irradiation surface of the reflecting member includes a first region including the reference mark, and a second region located on one side of the first region, said first
The plurality of laser beam reflectors are divided into a third region located on the other side of the region, and the plurality of laser beam reflectors are provided in the first region and a second reflector provided in the second region. It is composed of a reflecting section group and a third reflecting section group provided in the third region, and at least the first reflecting section group and the second and third reflecting section groups are different in number.

According to a second aspect of the present invention, there is provided a laser projecting apparatus in which the numbers of the first, second and third reflection unit groups are different from each other, and the number of digital signals output from the analog / digital converting means is the same. The display means changes according to the number of each of the first, second and third reflection unit groups, and the display means changes the display method according to the number of the digital signals.

Further, in the laser projecting device of the present invention as defined in claim 3, of the plurality of analog signals corresponding to the first reflecting section group detected by the light receiving means, the reference mark and the laser beam trajectory. If the two coincide with each other, the peak values of the two analog signals are compared. When both peak values are the same, the indication that the reference mark and the laser beam are coincident is displayed. By means.

[0020]

In the laser projecting device according to the first aspect of the present invention, when the laser beam irradiation surface of the reflecting member is irradiated with the laser beam, the laser beam is reflected by the laser beam reflecting portion,
When the reflected light from the laser beam reflecting portion is received by the light receiving means, the analog signal corresponding to the first to third reflecting portion groups in the first to third areas is output from the light receiving means, and each analog signal reaches a certain value. Digital signals corresponding to the number of each analog signal are sequentially output from the analog / digital conversion means,
The relative position between the reference mark and the laser beam is displayed by the display means based on the digital signal from the analog / digital conversion means.

Therefore, when performing the alignment work, if the operator installs the light projecting device main body and the reflecting member at predetermined positions, respectively, when the laser beam is swept within a predetermined plane, Whether or not the reference mark matches can be recognized by the display of the display means.

In the laser projector of the second aspect of the present invention, the numbers of the first, second and third reflection unit groups are different from each other, and the number of digital signals output from the analog / digital conversion means is the first, second and third. The display means changes the display method in accordance with the number of digital signals, so that in which direction the operator shifts the laser beam and the reference mark of the reflecting member. Can be identified.

In the laser projecting device according to the third aspect of the present invention, if the reference mark and the trajectory of the laser beam match among the plurality of analog signals corresponding to the first reflecting section group detected by the light receiving means. The peak values of the two analog signals from which the same peak value is obtained are compared, and when both peak values become the same, the display means displays that the reference mark and the laser beam match, so that the laser beam and the reflection are reflected. The reference mark of the member can be matched with high accuracy.

[0024]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a usage state of a vertical surface laser projecting apparatus according to a first embodiment of the present invention, FIG. 2 is a vertical sectional view of the vertical surface laser projecting apparatus, and FIG. 3 is an L-shaped plate. FIG. 4 is a perspective view, and FIG. 4 is an output waveform diagram detected by the vertical laser projector.

As shown in FIGS. 1 to 3, the vertical plane laser projecting device 1 is supported by a main body 2 and the main body 2 so as to be rotatable in the horizontal direction, and emits a laser beam 3 so as to form a vertical plane. Laser beam projecting unit 4, an L-shaped plate (reflecting member) 6 that reflects the laser beam beam 3 from the laser beam projecting unit 4, and a reflected light from the L-shaped plate 6 to receive the L-shaped plate 6 Receiving element (light receiving means) that outputs an analog signal (see FIG. 4) corresponding to the laser beam reflecting portions 41 to 44 of the laser beam reflecting surface of
7, leveling unit 9, alignment unit 10
It has and. As shown in FIG. 3, the L-shaped plate 6 is composed of a rectangular plate 6a and a support member 6b rotatably provided on the plate 6a by a rotary hinge 26. Plate 6 irradiated with laser beam 3
On the surface of a (laser beam irradiation surface), four parallel laser beam reflecting portions (for example, a ref sheet) 41 arranged in the short side direction of the plate 6a (the sweeping direction of the laser beam 1).
44 are provided, and the reference mark 36 is provided on the edge of the surface of the plate 6a.

The reference mark 36 is provided on the surface of the plate 6a.
Is included in the first region 51, the second region 52 is located on one side of the first region 51, and the third region 53 is located on the other side of the first region 51. The width of the first region 51 is substantially equal to the diameter width of the laser beam 3 when focused. On both sides of the first region 51, there are a second region 52 and a third region 53 having an area several times as large as that of the first region 51.

Of the four laser beam reflectors 41 to 44, most of the laser beam reflectors 41 and 42 and almost half of the laser beam reflector 44 (second reflector group) are located in the second region 52 and the laser beam. Most of the beam reflecting portion 43 and almost half of the laser beam reflecting portion 44 (third reflecting portion group) are in the third region 53, one end of the laser beam reflecting portions 41 to 43 and an intermediate portion of the laser beam reflecting portion 44 ( The first reflection unit group) is located in each of the first regions 51. Therefore, the three laser beam reflecting portions 41, 42, 44 are arranged in the second region 52 in the short side direction of the plate 6a, and the four laser beam reflecting portions are arranged in the short side direction of the plate 6a in the first region 51. Four
1 to 44, two laser beam reflecting portions 43 and 44 are arranged in the third region 53 in the short side direction of the plate 6a.

The laser beam projecting unit 4 is emitted from the projecting unit case 13, which is supported by the main body 2 via bearings 11 and 12 so as to be rotatable in the horizontal direction, the laser diode 14, and the laser diode 14. A collimator lens 15 that collimates the laser beam 3 and emits it in the horizontal direction, and a compensator 16 that is disposed between the laser diode 14 and the collimator lens 15 to compensate the tilt of the light projecting unit case 13, and a collimator lens. A beam splitter 17 that allows the parallel light from 15 to pass through as it is and also reflects the reflected light from the L-shaped plate 6 upward toward the light receiving element 7, and the light projecting unit case 13 in the vertical direction via a bearing 18 ( Rotation supported rotatably about the horizontal optical axis of the collimator lens 15 The body 19, fixed to the rotating cylinder 19, the motor is rotated in the horizontal direction pentagonal mirror 20 for guiding the laser beam 3 to the vertical, the rotating cylinder 19 via the transfer belt 21 from the collimator lens 15 22
It consists of and.

On the outer wall surface of the light projecting unit case 13, L
There are provided LEDs 24a, 24b, 24c of three colors for displaying the relative positions of the character plate 6 and the laser beam 3, and a buzzer 25 for emitting three kinds of tones.

As shown in FIGS. 1 and 2, the rotary cylinder 19 is formed with an opening 19a for sending out the vertical laser beam 3 from the pentamirror 20 to the outside. On the other hand, the light projecting unit case 13 has an opening 19a.
A plurality of openings 13a for emitting the laser beam 3 from the outside to the outside are formed over the entire circumference, and a transparent protective glass 23 is fixed to each of these openings 13a. By rotating the rotary cylinder 19 by the motor 22, the laser beam 3 from the collimator lens 15 is scanned in the 360 ° direction within the vertical plane, and the laser beam 3 is scanned.
Penetrates the protective glass 23 and is projected to the outside so as to form a vertical plane.

The above-mentioned light receiving element 7 and laser diode 1
4, motor 22, LEDs 24a-24c and buzzer 25
Are electrically connected to a control device (not shown) provided in the light projecting unit case 13.

The control device includes an A / D converter (analog / digital converter) that outputs a digital signal when the analog signal corresponding to the laser beam reflectors 41 to 44 from the light receiving element 7 reaches a constant value. A counting unit that counts the number of digital signals output from the A / D conversion unit, and LEDs 24a to 24c and a buzzer 2 according to the number of digital signals.
It is composed of a control unit for activating 5. The leveling unit 9 includes an upper plate 30 fixed to the lower portion of the main body 2 and a lower plate 32 attached to the upper plate 30 via three leveling screws 31.

The alignment unit 10 comprises an alignment fitting 34 having three legs 33a to 33c having sharp tips, and a fixing screw 35 for removably fixing the fitting 34 to the lower plate 32. Three legs 33a-33c
Of these, the tip of the leg 33a has a light beam center 3 of the laser beam 3.
It is a beam reference leg that matches A.

The main body 2 is provided with a circular bubble tube (not shown). While looking at the circular bubble tube, the inclination angle of the main body 2 in the horizontal plane is ± 20 with the three leveling screws 31.
If the leveling is performed to an accuracy of about a minute, the tilt angle of the laser beam 3 emitted by the laser beam projecting unit 4 within the vertical plane is ± due to the automatic compensation function of the compensator 16.
Obtained with an accuracy within 10 seconds.

Next, an alignment work for marking out the vertical surface (the laser beam 3 is located at a distance of 2
The work of matching the points a and b) will be described with reference to FIG.

When performing the alignment work, first, the tip of the beam reference leg 33a is accurately aligned with the point b.

Next, the leveling angle of the main body 2 in the horizontal plane is leveled by the three leveling screws 31 to an accuracy of about ± 20 minutes.

After this leveling, the laser beam 3 is emitted so as to form a vertical plane. Due to the automatic compensation function of the compensator 16, the tilt angle of the laser beam 3 in the vertical plane can be obtained with an accuracy of within ± 10 seconds.

Next, the reference mark 36 of the L-shaped plate 6 is aligned with the point a which is separated from the point b by about 30 m, for example.

When a power switch (not shown) is turned on in this state, the laser beam 3 is rotationally projected from the laser beam projecting unit 4, and a vertical plane is formed by the laser beam 3.

Then, the driving knob (not shown) is operated so that the laser beam 3 causes the reference mark 3 on the L-shaped plate 6 to move.
The laser beam projecting unit 4 is rotated in the horizontal direction until it coincides with 6.

The laser beam 3 hits the laser beam reflecting portions 41 to 44 on the plate 6a of the L-shaped plate 6,
When the light receiving element 7 receives the reflected light, one of the LEDs 24a ...
A predetermined buzzer sound is emitted from the buzzer 25 at the same time as 24c lights up.

For example, when the laser beam 3 hits the second area 52 on the surface of the plate 6a, as shown in FIG. 4A, the analog signal 44A of the reflected light from the laser beam reflecting portion 44 and the laser beam reflecting portion. The analog signal 42B of the reflected light from the laser beam 42 and the analog signal 41D of the reflected light from the laser beam reflector 41 are sequentially output from the light receiving element 7, and the analog-to-digital conversion unit 44A, 42B, 4
3 corresponding to the number of analog signals 44A, 42B, 41D when 1D reaches a predetermined slice level (constant value) S
The individual digital signals Ds are sequentially output.

The laser beam 3 is applied to the first surface of the plate 6a.
When hitting the area 51, as shown in FIG. 4B, the analog signal 44 of the reflected light from the laser beam reflector 44 is obtained.
A, the analog signal 42B of the reflected light from the laser beam reflector 42, the analog signal 43C of the reflected light from the laser beam reflector 43, and the analog signal 41D of the reflected light from the laser beam reflector 41 are sequentially output from the light receiving element 7. The A / D converter is configured to convert analog signals 44A, 42B, 43
When C and 41D reach a predetermined slice level S, four digital signals Ds corresponding to the number of analog signals 44A, 42B, 43C and 41D are sequentially output.

The laser beam 3 is applied to the third surface of the plate 6a.
When it hits the area 53, as shown in FIG. 4C, the analog signal 44 of the reflected light from the laser beam reflector 44 is obtained.
A and the analog signal 43C of the reflected light from the laser beam reflecting section 43 are sequentially output from the light receiving element 7, and the A / D converting section outputs the analog signal 44A, when each analog signal 44A, 43C reaches a predetermined slice level S. Two digital signals Ds corresponding to the number of 43C are sequentially output.

The digital signal Ds output from the A / D converter is counted by the counter, and when the number of digital signals is three (when the laser beam 3 hits the second area 52).
In order to inform the operator that the laser beam 3 is displaced to the right of the reference mark 36, the red LED 24
At the same time as turning on a, the buzzer 25 emits an intermittent sound.

When the number of digital signals is two (when the laser beam 3 hits the third area 53), the operator is informed that the laser beam 3 is displaced to the left side of the reference mark 36. , The yellow LED 24c is turned on, and at the same time, an intermittent sound is emitted from the buzzer 25. Buzzer 25 when the number of digital signals is 3 and when it is 2
Since the frequency of the intermittent sound emitted from is different, the operator can identify in which direction the laser beam 3 is displaced.

When the number of digital signals is four (when the laser beam 3 hits the first area 51), in order to inform that the laser beam 3 coincides with the reference mark 36,
At the same time as turning on the green LED 24b, the buzzer 25
A continuous sound is emitted from.

As described above, the LED 24 of any color depending on the position of the laser beam 3 with respect to the L-shaped plate 6.
Since a predetermined buzzer sound is emitted from the buzzer 25 at the same time that a to 24c are turned on, the operator rotates the laser beam projecting unit 4 by operating the drive knob while checking the light and sound, and the laser beam 3 is used as a reference. It can be matched to the scale 36.

As a result, the laser beam 3 has two points a,
It matches on b and the alignment work is completed. After this,
Move to the marking process.

As described above, according to the vertical plane laser projector of the first embodiment, when the alignment work is performed, the LEDs 24a to 24c having different colors are turned on according to the position of the laser beam 3 with respect to the L-shaped plate 6. At the same time, a different buzzer sound is emitted from the buzzer 25, so that the operator can manually rotate the laser beam projecting unit 4 while checking the light and sound to match the laser beam 3 with the reference mark 36. Like sensor device 120 (FIG. 6)
Is unnecessary, and alignment work can be performed in a short time by only one worker.

In the first embodiment described above, the case where the laser beam projecting unit 4 is manually rotated has been described. However, instead of this, a horizontal not-shown horizontal structure for rotating the laser beam projecting unit 4 in the horizontal direction is shown. The main body 2 is provided with a rotation driving device and a control unit for controlling the horizontal rotation driving device, and the laser beam projecting unit 4 is responsive to the output from the light receiving element 7.
May be rotated by a horizontal rotation drive device to automatically perform the alignment work.

Further, four analog signals 44A, 42B, corresponding to the first reflecting section group 51 detected by the light receiving element 7,
Of the 43C and 41D, two analog signals, for example, two analog signals that can obtain the same peak values P ₁ and P ₂ (see FIG. 4B) if the reference mark 36 and the trajectory of the light beam center 3A of the laser beam 3 coincide with each other, for example, The peak values P ₁ and P ₂ of the analog signals 42B and 43C are compared, and when both peak values P ₁ and P ₂ are the same, the LEDs 24a to 24c indicate that the reference mark 36 and the laser beam 3 match. Alternatively, the buzzer 25 may be used. By doing so, the laser beam 3 and the reference mark 36 of the L-shaped plate 6 can be aligned with high accuracy, and more accurate measurement can be performed.

FIG. 5 is a perspective view showing a reflecting member of a horizontal plane laser projector according to the second embodiment of the present invention. The same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

In the horizontal plane laser projector of the second embodiment, the reflecting member 66 is composed of a rectangular plate 66a and a bubble tube 66b provided on the upper portion of the plate 66a for confirming the inclination of the plate 66a. Has been done. A reference scale 60 is provided on the surface of the plate 66a along the lateral direction of the plate 66a, and V-shaped grooves (reference marks) 76 for marking are provided at both ends of the reference scale 60. In addition, in the horizontal plane laser projector not shown,
When the number of digital signals is four (laser beam 3 is the first
When the laser beam 3 hits the area 51), the control unit controls the laser diode 14 to blink the laser beam 3 in order to inform that the laser beam 3 matches the reference scale 60.

In order to carry out the marking operation using the horizontal plane laser projector of this second embodiment, the horizontal plane laser projector main body is installed, for example, in the substantially central part of the room, and the horizontal plane laser projector main body is operated. Then, the laser beam 3 is rotated and projected in the horizontal direction. The laser beam is scanned in the direction of 360 ° in the horizontal plane, and the operator slides the reflecting member 46 on the wall surface while checking the bubble tube 66b to search for the position of the laser beam 3. Reference scale 60 of laser beam 3 and reflecting member 46
When and match, the laser beam 3 blinks.
The reflection member 46 is held at the position where the laser beam 3 blinks, and marking is performed using the V-shaped groove 76. A horizontal marking can be performed by connecting a plurality of points marked in this way with a line.

According to the horizontal plane laser projector of the second embodiment, since the laser beam 3 blinks when the laser beam 3 and the reference scale 60 of the reflecting member 46 match, the reference scale 60 of the reflecting member 46. Laser beam 3
Therefore, the horizontal marking operation can be speeded up.

In each of the above-mentioned embodiments, the plate 6a is formed on the surfaces of the plates 6a and 66a irradiated with the laser beam 3.
Although the case where four parallel laser beam reflecting portions 41 to 44 arranged in the short side direction are provided has been described, instead of this, a plurality of non-parallel relations (not shown) are provided on the surfaces of the plates 6a and 66a. The laser beam reflector may be provided. Furthermore, the number of the second reflecting section groups 52 and the number of the second reflecting section groups 53 may be the same.

[0060]

As described above, according to the laser projector of the first aspect of the invention, when performing the alignment work, the operator installs the projector main body and the reflecting member at predetermined positions. For example, when the laser beam is swept in a predetermined plane, whether or not the laser beam and the reference mark of the reflecting member match can be recognized by the display of the display means, so that only one operator can operate for a short time. You can perform alignment work with.

According to the laser projector of the second aspect of the present invention, the numbers of the first, second and third reflecting section groups are different from each other,
Since the number of digital signals output from the analog / digital conversion means changes according to the number of each of the first, second and third reflection unit groups, and the display means changes the display method according to the number of digital signals. The person can identify in which direction the laser beam and the reference mark of the reflecting member are displaced,
The measurement work can be done quickly.

According to the laser projecting device of the third aspect of the invention, the reference mark and the orbit of the laser beam of the plurality of analog signals corresponding to the first reflecting section group detected by the light receiving means coincide with each other. Then, the peak values of the two analog signals from which the same peak value is obtained are compared, and when both peak values are the same, the display means displays that the reference mark and the laser beam match, so the laser beam And the reference mark of the reflecting member can be matched with high accuracy.

[Brief description of drawings]

FIG. 1 is a perspective view showing a usage state of a vertical surface laser projecting apparatus according to a first embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a vertical laser projector.

FIG. 3 is a perspective view of an L-shaped plate.

FIG. 4 is an output waveform diagram detected by a vertical laser projector.

FIG. 5 is a perspective view of a reflecting member of a horizontal plane laser projector according to a second embodiment of the present invention.

FIG. 6 is a perspective view showing a usage state of the vertical surface laser projection device.

FIG. 7 is a vertical cross-sectional view of a conventional vertical surface laser projecting device.

FIG. 8 is a block diagram of a sensor device.

[Explanation of symbols]

 3 laser beam 6 L-shaped plate 7 light receiving element 24a to 24c LED 25 buzzer 36 reference mark 41 to 44 laser beam reflecting portion 46 reflecting member 51 first region 52 second region 53 third region 76 V-shaped groove

Claims (3)

[Claims] 1. A reference mark provided on one edge of a laser beam irradiation surface on which a laser beam swept in a predetermined plane is irradiated, and a plurality of laser beam reflectors arranged in a sweep direction of the laser beam. In a laser projecting device comprising: a reflecting member having: and a light receiving unit that receives reflected light from the reflecting member and outputs an analog signal corresponding to the plurality of laser beam reflecting units, the light receiving unit detects the light. And an analog / digital converter that outputs a digital signal when the analog signal corresponding to the laser beam reflector reaches a certain value, and the reference scale and the laser beam based on the digital signal from the analog / digital converter. And a display unit that displays a relative position to the laser beam irradiation surface of the reflection member. A region, a second region located on one side of the first region, and a third region located on the other side of the first region, wherein the plurality of laser beam reflectors include the first region. A first reflecting portion group provided in the area and a second reflecting portion provided in the second area
The laser projection is composed of a reflection section group and a third reflection section group provided in the third region, and at least the first reflection section group and the second and third reflection section groups have different numbers. Light equipment. 2. The number of the first, second and third reflection unit groups is different from each other, and the number of digital signals output from the analog / digital conversion means is the number of each of the first, second and third reflection unit groups. 2. The laser projecting device according to claim 1, wherein the display means changes the display method according to the number of the digital signals. 3. The same peak value can be obtained if the reference mark and the orbit of the laser beam among the plurality of analog signals corresponding to the first reflecting section group detected by the light receiving unit match. 3. The peak value of one analog signal is compared, and when both peak values are the same, the display means displays that the reference mark and the laser beam match each other. The laser projection device described.