JP3040771B1 - Laser photodetector - Google Patents

Abstract

An object of the present invention is to improve the efficiency of "leveling" work in building construction work, and to confirm a reflected light beam of the laser light even in a bright work environment. It is an object to provide a detector. SOLUTION: A laser beam detector 1 comprises a substantially rectangular parallelepiped box 2, and has an incident window 3 on one side surface 20 on which an incident light beam A1 enters, and intersects the incident window 3 at substantially 90 degrees. Outgoing window 4 through which outgoing light flux B1 exits
Is provided. In the box 2, a single reflecting mirror 5 is provided as the reflecting means, and a level scale is provided on the entrance window 3 located on the optical path of the incident light beam A1 and the outgoing light beam B1 created by the reflecting mirror 5. 6 is attached.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a detector for laser light.

[0002]

2. Description of the Related Art After completion of construction of a building, construction work is performed. At that time, in the floor work and ceiling work, at each stage of work, determine the level that will be the height standard,
You need to confirm. In addition, in internal construction work, it is necessary to determine and confirm the level that serves as a reference for the position of pillars and the like.

[0003] The work of setting and confirming this level is referred to as "leveling" in this specification, but "leveling" in conventional construction work is generally performed using a bubble level, a ruler, a water thread, or the like. It was done. However, "leveling" using visible laser light has recently been performed because of the need for a plurality of personnel and a lack of leveling accuracy in some cases.

[0004] An example of the contents of "leveling" using the visible laser light will be described with reference to FIG. In the figure, after a joist (not shown) is arranged and fixed at each corner of the soil concrete 100, a plurality of supporting legs 101 whose height can be adjusted are arranged on the soil concrete 100, 1 shows an outline of floor construction in which a panel 102 is laid out to form a floor surface. In this floor construction, after laying a plurality of panels 102, in order to “level out” the floor surface with visible laser light, first, the laser light source device 104 is operated, and the laser light source device 104 spreads in a fan shape in the horizontal direction. A laser beam 103 which becomes a linear laser (hereinafter, referred to as a linear laser beam) is emitted to a virtual irradiation surface orthogonal to the axis. As a result, the laser beam 103 is reflected as a linear laser beam on the irradiation surface. Then, while the worker visually recognizes the linear laser beam 103, the support legs 101, 10 are adjusted so that the linear lines coincide with each other.
The height of 1, 101 is adjusted with a screwdriver or the like.

[0005]

However, such "leveling" has the following problems. First
In addition, in order to accurately recognize the linear laser light, the eyes must be placed substantially parallel to the floor surface, which causes the worker to take an unreasonable posture, and the inefficiency of the “leveling out” operation is required. Secondly, if the work environment is a bright place, it is difficult to confirm the linear laser light itself.

Accordingly, the present invention has been made to solve the above-mentioned problems, and enhances the efficiency of the "leveling out" operation and reduces the reflected light beam of the laser light even in a bright work environment. It is an object of the present invention to provide a laser light detector that can be confirmed.

[0007]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention makes it easy to visually recognize the incident light beam in a box provided with an entrance window through which the incident light beam enters and an exit window through which the exit light beam exits. with arranging the reflecting means for generating the emitted light beam is reflected in a direction, it encounters the laser beam detector arranged level scale on an optical path of the emitted light beam and the incident beam
The box body has a substantially rectangular parallelepiped shape, and the
An entrance window is provided, and crosses the entrance window at approximately 90 degrees.
Along with providing the emission window on a surface or an adjacent side surface,
By blocking light other than light entering from the entrance window and the exit window
A laser light detector characterized in that it can be used (the invention according to claim 1).

The laser beam detector is a box having an entrance window and an exit window, and functions as a dark box to block unnecessary light as much as possible. The reflecting means refers to an optical element such as at least one reflecting mirror and at least one prism that can generate a reflected light beam with respect to the incident light beam. The level scale may be provided at any position on the optical path of the incident light beam and the outgoing light beam, and near the entrance window, between the entrance window and the reflection unit, integrally with the reflection unit, It may be provided between the means and the exit window or near the exit window.

According to the above invention, the emitted light beam becomes a light beam containing the level information of the linear laser light positioned on the level scale, and is emitted in a direction that is easy to recognize. Therefore, the efficiency of the “leveling out” work of the worker or the like can be improved.

[0010] Even in a place where the working environment is bright,
The laser light detector can easily confirm the level information.

In the above invention, a filter may be attached to the emission window (the invention according to claim 2). With this filter, a light beam containing the level information can be selectively transmitted, so that the efficiency of the “leveling” operation can be further enhanced.

[0012]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the laser light detector according to the first embodiment, and FIG. 2 is a central longitudinal sectional view of the detector. In the above drawings, the description in FIG. 13 and the respective drawings described below, the same components are denoted by the same reference numerals, and redundant description will be omitted.

As shown in FIGS. 1 and 2, a laser beam detector (hereinafter, referred to as a detector) 1 according to the first embodiment comprises a substantially rectangular parallelepiped box 2 and is incident on one side surface 20. An entrance window 3 into which the light beam A1 is incident is provided, and an output light beam B
An emission window 4 from which the light 1 exits is provided. And the box 2
A single reflecting mirror 5 serving as the reflecting means is provided therein, and the incident light beam A1 and the outgoing light beam B created by the reflecting mirror 5 are provided.
A level scale 6 is attached to the entrance window 3 located on the first optical path.

The outer and inner surfaces of the box 2 are black, and hoods 30 and 40 are provided at the entrance window 3 and the exit window 4, respectively. Light other than light entering through these windows 3 and 4 is provided. To be able to cut off. The incident light beam A1 incident on the incident window 3 is a light beam containing the above-described linear laser light.

As shown in FIG. 2, the reflecting mirror 5 has a reflecting surface 50 at an angle of approximately 45 degrees with respect to the incident light beam A1, that is,
It is attached so as to be inclined approximately 45 degrees rearward with respect to the entrance window 3.

On the level scale 6, the incident light flux A1
Are scaled in the vertical direction at predetermined intervals, for example, at every 2 mm, in correspondence with the irradiation width of the linear laser light included in.
The level scale 6 is a scale made of a translucent material, and prevents the entrance of extra light and the output light flux B1.
"Screen" that projects scales and linear laser light contained in
Also plays a role.

According to the detector 1 configured as described above, the incident light beam A1 passes through the level scale 6 and advances to the reflecting mirror 5, where it is bent at substantially 90 degrees, and 4 is emitted. Therefore, as shown in FIG.
The level information 7 in which the linear laser light 103 is positioned on the scale can be obtained, and the position of the linear laser light 103 with respect to the level scale 6 and the positional relationship of the detector 1 with respect to the linear laser light 103 can be detected. .

Therefore, according to the detector 1, the level information 7 can be sent along the line of sight of a worker or the like located directly above the detector 1, thereby improving the efficiency of the "level setting" operation. Can be enhanced. Also, due to the dark box effect,
The level information can be confirmed even in a bright work environment. In addition, a very compact detector with a height, width, and height of about several cm can be realized, which does not hinder the work, the number of parts is small, and the material is provided at low cost, realizing low cost. can do. further,
In the level information 7, the position of the linear laser beam 103 is indicated by a scale and is digitized, so that the level difference can be grasped numerically.

Next, a specific method of using the detector 1 will be described with reference to FIGS. This method of use is based on the assumption that the same construction as the floor construction described with reference to FIG. 13 is used. FIG. 4 is a schematic diagram of the floor construction using the detector 1, and FIGS. FIG. 3 is a schematic diagram showing level information 7 obtained by a device 1.

First, a laser light source device 104 is prepared, a linear laser beam 103 is emitted, a horizontal line is formed on the panel floor, and then the detector 1 is placed on the support leg 101A, and an entrance window thereof is provided. A linear laser beam 103 is made incident on 3.

Next, the position of the linear laser beam 103 on the support leg 101A with respect to the level scale 6 is specified by the emitted light beam emitted in the vertical direction substantially coincident with the line of sight of the worker.

As a result, the level information 7A as shown in FIG. 5 is obtained, and the height position of the support leg 101A and thus the height position of the panel floor surface are determined.

Next, the detector 1 is moved to the support leg 101B adjacent to the support leg 101A, and the position of the linear laser beam 103 with respect to the level scale 6 is specified by the same procedure as described above. As a result, it is assumed that level information 7B as shown in FIG. 6 is obtained.

Next, the detector 1 is moved to the supporting leg 101C adjacent to the supporting leg 101B, and the position of the linear laser beam 103 with respect to the level scale 6 is specified by the same procedure as described above. As a result, it is assumed that level information 7C as shown in FIG. 7 is obtained.

Based on the above level information, the support legs 101
A positional relationship that the support leg 101C is at a lower position with respect to A and 101B is detected.

Therefore, until the level information of the support leg 101C and the level information of the support legs 101A and 101B match, the lifting screw inside the support leg 101C is removed.
Just rotate it.

Therefore, according to this usage method, the operator can operate the driver in a comfortable posture, and the efficiency of the "leveling out" operation can be improved. In addition, since "level output" is performed so that the level information of each measurement point is the same, it can be performed accurately.

As another example of a specific method of using the detector 1, "leveling" of ceiling work will be described. In the ceiling work, as shown in FIG. 8, for each of the inserts 106 attached to the base of the ceiling 105 at predetermined intervals, the suspension bolts 107 are suspended, and the ridge receiver 108 is attached to each suspension bolt 107. In these field margins 108,
A not-shown field edge is passed over, and a finishing material is attached.

At each stage of such ceiling work, "leveling out" can be performed using the detector 1. That is, as shown in FIG. 8, the detector 1 is applied to the lower surface of the margin receiver 108, the emission window 4 is directed downward, and the level information 7 is extracted from below. Alternatively, the detector 1 may be placed on the upper surface of the margin receiver 108, the emission window 4 may be directed sideways, and the level information 7 may be extracted from the front. In this case, the level scale 6 may have a configuration in which a horizontal scale is added to a vertical scale. As described above, by using the detector 1 for “leveling out” of ceiling work, the same operation and effect as the above method can be obtained.

Next, a detector according to a second embodiment will be described with reference to FIG. As shown in FIG.
A circular bubble tube 31 on the hood 30 of the entrance window 3
Is attached. Therefore, the degree and direction of the inclination of the detector 1A at each measurement point can be grasped, and more accurate level setting can be performed. Other configurations are the first
This is the same as the embodiment, and has the same effect.

Next, a detector according to a third embodiment will be described with reference to FIG. As shown in FIG.
B is provided with a hole 41 for entering and exiting the filter 8 and left and right sliding portions 42 and 42 in the hood 40 of the exit window 4 so that the filter 8 can be detachably attached. Due to the dark box effect of the detector 1, the level information 7 can be confirmed even in a bright work environment, but if the filter 8 is attached, the detector 1B can be checked even in a brighter work environment. Can be used. As the filter 8, a glass filter is typically used. Other configurations are the same as those of the first embodiment, and have the same operation and effect.

In the first to third embodiments, the reflecting mirror 5 is mounted at an angle of about 45 degrees with respect to the incident light beam A1, but the light beam B1 is directed in a direction that is easy for a worker to see. , The inclination angle of the reflecting mirror 5 is
It can be changed and set arbitrarily.

Next, based on FIG. 11 and FIG.
The detector according to the embodiment will be described. The detector 1C is a laser beam that spreads mainly in the vertical direction, and can respond to a laser beam forming a linear vertical line on a virtual irradiation surface orthogonal to the optical axis. . That is, this detector 1C is different from the detector 1 of the first embodiment in that the scale of the level scale 6C is represented in the vertical direction, and the reflecting surface 50 of the reflecting mirror 5C emits light to the incident light beam A1. Luminous flux B
1 is emitted in the direction of 60 degrees (FIG. 1
2), the exit window 4C is also provided on the side surface 21 adjacent to the entrance window 3 corresponding to the exit direction. According to the detector 1C, the same operation and effect as in the first embodiment can be achieved, for example, when the leveling of the vertical line is performed in the internal construction work, the efficiency of the “leveling” operation can be improved. . Further, the same operation and effect can be obtained by using the same configuration as the second and third embodiments.

In each of the above embodiments, the level scale 6 is arranged on the entrance window 3, but the present invention is not limited to this. The reflection scale 5 is provided between the entrance window 3 and the reflection mirror 5.
May be integrally provided between the reflecting mirror 5 and the emission window 4 or in the vicinity of the emission window 4. As the laser light source device 104, a commercially available horizontal line marker or vertical line marker may be used.

[0035]

According to the first aspect of the present invention, the emitted light beam becomes a light beam containing the level information of the linear laser light positioned on the level scale, and is emitted in a direction that is easily visible. You. Therefore, the efficiency of the “leveling out” work of the worker or the like can be improved. Further, the laser light detector can easily confirm the level information even in a place where the working environment is bright.

According to the second aspect of the present invention, since the light beam including the level information can be selectively transmitted, the efficiency of the "leveling out" operation can be further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a detector according to a first embodiment,

FIG. 2 is a longitudinal sectional view of the center,

FIG. 3 is an explanatory view of the operation,

FIG. 4 is an explanatory diagram of the method of use,

FIG. 5 is a schematic diagram of level information,

FIG. 6 is a schematic diagram of level information,

FIG. 7 is a schematic diagram of level information,

FIG. 8 is a schematic plan view of the ceiling work,

FIG. 9 is a perspective view of a detector according to a second embodiment,

FIG. 10 is a perspective view of a detector according to a third embodiment,

FIG. 11 is a perspective view of a detector according to a fourth embodiment,

FIG. 12 is a cross-sectional view of the same center,

FIG. 13 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1A 1B 1C Laser beam detector 2 Box 20 21 Side surface 3 Inlet window 4 4C Outgoing window 5 Reflecting mirror 30 40 Hood 50 Reflecting surface 6 Level scale 7 7A 7B 7C Level information 100 Soil 101 101A 101B 101C Support leg 102 Panel 103 Linear laser light 104 Laser light source device 105 Ceiling 106 Insert 107 Suspension bolt 108 Edge holder 31 Bubble tube 8 Filter 41 Outlet / inlet hole 42 Slide part 5C Reflecting mirror 4C Emission window

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G01C 15/00, 15/06 G01C 5/00

Claims (2)

(57) [Claims] An incident window into which an incident light beam enters, and an outgoing light beam
With an exit window for exitingInside the box,See the incident light beam
A reflection that reflects the light in an easily recognizable direction to generate the emitted light flux
Means for disposing the incident light beam and the outgoing light beam
Laser light detector with level scale on optical pathSo
hand, The box has a substantially rectangular parallelepiped shape, and the incident surface is incident on one side surface thereof.
A window is provided, and an upper surface or
Provides the exit window on the adjacent side surface and
Light other than light entering from the window and the exit window can be blocked.
What I did A laser light detector. 2. The laser beam detector according to claim 1, wherein a filter is attached to the emission window.