JP2968208B2 - Reflector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflection device.

[0002]

2. Description of the Related Art For example, GPS (global po
In a positioning system, a GPS receiver for receiving a radio wave from a satellite is installed vertically above a survey point. To install this GPS receiver, a pole is set up on the surveying point at a predetermined distance from the surveying point with a tripod, and the GPS receiver is attached to the upper end of the pole. If radio waves from satellites are obstructed by a building or a standing tree when installing a GPS receiver, it is necessary to raise the pole and install the GPS receiver at a higher position than the building or the standing tree. there were. In this case, if the pole is shifted from the vertical direction and inclined, the GPS
It is important to raise the pole along the vertical direction because the receiver is displaced from the survey point.

[0003] Therefore, conventionally, a down swing has been used to erect a pole at a surveying point along a vertical direction. That is, after the swing is lowered from the pole support portion of the tripod to match the survey point, the pole is made to extend along the vertical direction by the level.

[0004] In addition to the use of the down swing, the pole has been set up vertically using a transit. That is, two transits are installed in a direction crossing the GPS receiver at 90 degrees. Then, the transit is leveled by operating the adjustment mechanism while looking at the plurality of levels provided on the transit. After the installation of both transits, the vertical collimation line and the pole are matched while looking through the telescope of each transit. As a result, the pole was set up along the vertical direction.

[0005]

However, when using the above-mentioned bob, it is difficult to accurately erect the pole because the bob swings due to a slight wind. In addition, when using the transit, the pole cannot be set up unless a person who looks into the telescope of the transit and a person who adjusts the inclination of the pole work together. Accordingly, there has been a problem that a plurality of workers have to perform the erecting of the pole along the vertical direction.

An object of the present invention is to measure a reflection angle at which an irradiated visible laser beam is reflected.

[0007]

According to a first aspect of the present invention, there is provided a display which is capable of passing a visible laser beam emitted from a laser transmitter and displaying a laser passing point when the visible laser beam passes. The subject matter includes a member and a reflecting member that reflects visible laser light that has passed through the display member toward the display member. Therefore, according to the first aspect of the present invention, when the visible laser light emitted from the laser transmitter passes through the display member, the laser pass point at the time of incidence is displayed on the display member. When the visible laser light that has passed through the display member is reflected by the reflection member toward the display member and passes through the display member again, the laser passing point at the time of reflection is displayed. By measuring the distance between the laser passing points at the time of the incidence and at the time of reflection, the reflection angle of the visible laser light reflected by the reflection member is measured.

[0008] The invention according to claim 2 is characterized in that the display member is translucent. Therefore, according to the function of the invention described in claim 2, in addition to the function of the invention described in claim 1, the display member is translucent, so that both laser passing points at the time of incidence and reflection are clearly displayed. Is done.

According to a third aspect of the present invention, the display member includes a display unit for indicating a reflection angle of the visible laser light reflected by the reflection member. Therefore, according to the third aspect of the present invention, in addition to the operation of the first or second aspect, the distance between the laser passing points at the time of incidence and at the time of reflection can be made visible by the display unit. The reflection angle of the laser beam is read.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied as a reflector for vertically setting a pole used in GPS surveying along a vertical direction will be described below with reference to the drawings.

As shown in FIG. 1, a pole 3 is provided upright on an upper surface of a pole support 2 of the tripod 1. At the upper end of the pole 3 is a GPS receiver T that receives radio waves from satellites
Is detachably attached. Three legs (only two are shown in FIG. 1) 4 are rotatably connected to the lower part of the outer edge of the pole support 2, and each leg 4 is extendable and contractable along its longitudinal direction. Has become. That is, by adjusting the length of each leg 4, the inclination of the pole 3 is adjusted. A laser transmitter 5 is attached to the lower surface of the pole support 2, and the optical axis of the visible laser light L emitted from the laser transmitter 5 coincides with the axis C of the pole 3. A reflection device 6 is provided directly below the laser transmitter 5.

Next, the reflection device 6 will be described.
As shown in FIGS. 2 and 3, a lower portion of a storage case 8 having a substantially bottomed cylindrical shape is inserted into the transparent cylinder 7. A male screw portion 8a is formed on a lower outer peripheral surface of the storage case 8, and the male screw portion 8a is screwed to a female screw portion 7a formed on an upper inner peripheral surface of the transparent cylinder 7. The housing case 8 is self-standing by this screwing. A measuring point indicating projection 10 having a sharper tip is screwed to a mounting projection 9 formed on the lower surface of the housing case 8.

A glass body 11 as a reflecting member having a columnar shape is housed in the housing case 8.
The lower edge of 1 is locked by a step 8 b formed on the inner peripheral surface of the storage case 8. The bottom surface of the glass body 11 is a mirror surface 11a on which mercury is deposited. The mirror surface 11a reflects the visible laser light L emitted from the laser transmitter 5 toward a display plate 12 as a display member described later. It is possible.

A display panel 12 having a circular shape is provided on the upper surface of the glass body 11. A mounting ring 13 is mounted on the upper end of the storage case 8. That is, a female screw portion 13 a is formed on the upper inner peripheral surface of the mounting ring 13, and the female screw portion 13 a is screwed into a male screw portion 8 c formed on the upper outer peripheral surface of the housing case 8, so that the mounting ring 13 is formed. Is attached to the storage case 8. A pressing portion 13b is projected from the upper edge of the mounting ring 13 inward in the radial direction, and the display plate 12 is pressed against the upper surface of the glass body 11 by the pressing portion 13b.

As shown in FIG. 4, the display panel 12 is made of a translucent synthetic resin, is capable of passing visible laser light L emitted from the laser transmitter 5, and has a visible upper surface of the display panel 12. A laser passing point through which the laser light L passes is projected on a predetermined plane. Further, a cross-shaped azimuth line 14 is printed on the upper surface of the display panel 12. Further, an angle display scale 15 as a display unit is provided on the upper surface of the display plate 12.
Are printed a plurality of times, and each angle display scale 15 is
3 shows the reflection angle α of the visible laser light L reflected inside the light source. Each angle display scale 15 has a concentric circle shape, and is displayed every 5 degrees around the intersection of the azimuth line 14.

Next, the reflecting device 6 configured as described above is used.
A method for erecting the pole 3 along the vertical direction using the method will be described. Before installation, G from pole 3
Remove the PS receiver T.

After the tip of the measuring point indicating projection 10 is aligned with the surveying point while viewing the outside of the transparent cylinder 7, the display plate 12 of the housing case 8 is made horizontal using a level not shown. Specifically, the lower part of the transparent cylinder 7 is padded or buried in the ground so that the display panel 12 is adjusted to be horizontal. Thereafter, the visible laser light L emitted from the tip of the laser transmitter 5 is applied to the center of the display panel 12,
After placing the tripod 1 so that it is located at the intersection of
Attach the GPS receiver T to the upper end of the.

The visible laser beam L applied to the display panel 12
Passes through the display plate 12 and the glass body 11 to reach the inner surface of the storage case 8, and the display plate 1
It is reflected to two sides. Then, the reflected visible laser light L is opposite to the case where the reflected visible laser light L is incident.
2 again, the light is irradiated to the outside of the storage case 8.
When the incident visible laser light L passes through the display panel 12, as shown in FIG. 4, a laser passing point (hereinafter, referred to as an incident passing point) A at the time of incidence is projected on the upper surface of the display panel 12. . In this case, as described above, the laser transmitter 5
Is applied to the center of the display panel 12, the incident passing point A is projected at the intersection of the azimuth lines 14. In addition, when the reflected visible laser light L passes through the display panel 12, as shown in FIG. 4, a laser passing point (hereinafter, referred to as a reflection passing point) B at the time of reflection on the upper surface of the display panel 12.
Is projected. Since the display plate 12 is translucent, both passing points A and B by the visible laser light L are clearly displayed.

When the pole 3 is not set up vertically, the reflection passing point B deviates from the incident passing point A, that is, the intersection of the azimuth lines 14. Then, while associating the position of the reflection passing point B with the angle display scale 15,
The reflection angle α of the visible laser light L is read. Also, azimuth line 1
While looking at 4, the direction in which the position of the reflection passing point B is shifted is read. By adjusting the length of each leg 4 of the tripod 1 using the reflection angle α and the direction of displacement of the reflection passing point B as a guide, the reflection passing point B is changed to the incident passing point A.
To match. Due to the coincidence of the two passing points A and B, the reflection angle α of the visible laser light L becomes 0 degree, which means that the visible laser light L is vertically reflected on the upper surface of the display panel 12. Therefore, the visible laser light L is perpendicular to the upper surface of the display panel 12 which has already been made horizontal, so that the pole 3 is set up in the vertical direction. Further, when adjusting the length of each leg 4, since the reflection angle α of the visible laser light L and the azimuth of the reflection passage point B can be read, an approximate aim can be obtained without relying on any intuition.

Even if the incident passing point A is displaced from the center of the display panel 12, the incident angle and the reflecting passing points A and B coincide with each other as described above, so that the reflection angle α becomes 0 degree. . When this reflection angle α becomes 0 degree,
The pole 3 is set up vertically along the vertical direction on the point where the two passing points A and B of the visible laser light L coincide.
Then, the distance between the two passing points A and B is shifted to the azimuth line 1.
4 and the distance read is added or subtracted from the GPS survey result, whereby an accurate survey result can be obtained.

This embodiment has the following effects (1) to (5). (1) Since it is not necessary to use a down swing to erect the pole 3 along the vertical direction, the pole 3 can be erect along the vertical direction without being affected by wind at the survey site. Therefore, the GPS transmitter T can be accurately set at the surveying point.

(2) Since the pole 3 is disposed right above the reflection device 6, even if the pole 3 is not located away from the pole 3,
Both passing points A and B projected on the display board 12 by one worker
The inclination of the pole 3 can be adjusted by adjusting the length of each leg 4 of the tripod 1 while watching. Therefore, unlike the past, people who look into the transit telescope,
There is no need to erect the pole 3 in cooperation with a person who adjusts the inclination of the pole 3. Therefore, it is not necessary for a plurality of operators to stand the pole 3 along the vertical direction, and the pole 3 can be stand by one worker.

(3) Since the incident passage point A and the reflection passage point B can be displayed on the display plate 12 of the housing case 8,
By measuring the distance between the two passing points A and B on the angle display scale 15, the reflection angle α of the visible laser light L can be measured. Therefore, when the inclination of the pole 3 is adjusted, the reflection angle α of the visible laser light L can be read, so that an approximate aim can be obtained without relying on any intuition. Therefore, it is possible to easily and quickly stand in the vertical direction along the pole 3.

(4) Since the display plate 12 of the housing case 8 is translucent, the incident and reflection passing points A and B of the visible laser light L can be clearly displayed on the upper surface of the display plate 12. Therefore, visibility can be improved. The distance between the laser passing points A and B at the time of incidence and reflection can be easily measured.

(5) Since the azimuth line 14 is printed on the display panel 12, the azimuth of the reflection passing point B can be read.
When adjusting the inclination of, the reflection angle α of the visible laser light L can be read. For this reason, the direction in which the pole 3 is inclined does not need to rely entirely on intuition. Therefore, pole 3
Can be easily and quickly set up.

The present invention may be configured as follows in addition to the above embodiment. (A) In the reflection device 6 of the embodiment, the reflection device 6 is arranged below the pole 3 so that the pole 3 is erected along the vertical direction. The following may be adopted. That is, as shown in FIG. 5, the reflecting device 6 is fixed to the pole 3, and the display plate 12 is disposed so as to oppose the laser transmitter 5 attached to the optical distance meter 20. In this case, if the incident passage point A and the reflection passage point B coincide with each other as in the above-described embodiment, the pole 3
Is set up vertically.

(B) In the above-described embodiment, the pole 3 is erected along the vertical direction. However, as shown in FIG. 6, the pole 3 may be embodied when the pillars 21 of the building are marked. . That is, the reflecting device 6 is attached to the pillar 21, and the display plate 12 is opposed to the laser rotary marking device 22. In this case, when the laser rotary marking device 22 rotates while emitting the visible laser light L, the incident passing point A and the reflecting passing point B are continuously displayed on the display panel 12. That is, the visible laser light L is projected on the display panel 12 not by a point but by a trajectory line. If the trajectory line of the incident passing point A coincides with the trajectory line of the reflecting passing point B, the ink can be printed while the column 21 is set up in the vertical direction.

(C) As shown in FIG. 7, the reflecting device 6 is fixed to the pole 3, and the display plate 12 is arranged so as to oppose the laser level 23. In this case, if the incident passage point A and the reflection passage point B coincide with each other, the pole 3 has been set up in the vertical direction, and the distance from the ground to the reflection device 6 has to be increased. It can be read by the scale attached to 3.

(D) As shown in FIG. 8, the present invention can be applied to a case where radio waves periodically transmitted from an artificial satellite are received to measure the distance to a surveying point. For example, when the GPS antenna 24 for receiving radio waves is obstructed by a tree or the like (not shown), the laser transmitter 5 is provided directly below the GPS antenna 24. Then, it is possible to measure the reflection angle α by emitting the visible laser light L toward the reflection device 6 installed at the surveying point, and measure the distance to the surveying point using the reflection angle α as a correction value. Become.

(E) In the above embodiment, the housing case 8 is made to be self-standing by the transparent tube 7. However, instead of the transparent tube 7, a stand 25 shown in FIG. According to the stand 25, when the reflection device 6 is installed at the surveying point, the surveying point does not need to be seen through the transparent cylinder 7, so that the tip of the surveying point indicating projection 10 can be more easily seen. A ball 26 is accommodated in the stand 25, and the ball 26 is rotatably supported by a compression spring 27.
The upper end of the ball 26 is projected from the inside of the stand 25,
A cover 2 for accommodating the level 28 is provided on the protrusion.
9 are connected. Then, the tip of the cover body 29 is connected to the mounting ring 13. According to this configuration, the level of the reflection device 6 can be easily adjusted without mounting a level on the upper surface of the display panel 12.

(F) In the above-described embodiment, the angle display scale 15 and the azimuth line 14 are printed on the display plate 12.
It is also possible to omit 4 and 15. In this case, to measure the reflection angle α, the length between the incident passage point A and the reflection passage point B is measured, and the reflection angle α is calculated based on this length.

(G) Angle display scale 1 in the above embodiment
Although 5 is displayed every 5 degrees, it may be displayed at any angle, for example, every other degree. For example, if the angle is displayed every other degree, the reflection angle α can be measured more clearly.

(H) Although the glass body 11 is provided in the above embodiment, the glass body 11 may be omitted. When the glass body 11 is omitted, the inner surface of the housing case 8 is made a mirror surface by silver deposition or the like so that the visible laser light L can be reflected.

(I) Although the display panel 12 is translucent in the above-described embodiment, the display panel 12 may be made transparent or a translucent tracing paper may be provided on the transparent display panel 12. Next, regarding technical ideas other than the claims that can be grasped from the embodiment,
These effects are described.

(A) The reflecting device according to claim 1 or 2, wherein the display member has an azimuth line for indicating an azimuth of the visible laser light reflected by the reflecting member. According to this configuration, the direction in which the visible laser light is reflected can be determined.

(B) The reflecting member is formed in a cylindrical shape having a bottom, and is capable of reflecting visible laser light emitted from a laser transmitter on an inner back surface thereof, and the display member covers an opening of the reflecting member. The reflection device according to claim 1, wherein the reflection device is provided as follows. According to this configuration, claim 1 to claim 3
In addition to the effects of the invention described in (1), visible laser light can be reflected with a simple configuration, the weight can be reduced, and the device can be manufactured at low cost.

[0037]

According to the first aspect of the present invention, both laser passing points at the time of incidence and reflection can be displayed on the display member. The reflection angle of the reflected visible laser light can be measured.

According to the invention described in claim 2, according to claim 1
In addition to the effects of the invention described in (1), since the display member is translucent, both laser passing points at the time of incidence and at the time of reflection can be clearly displayed to improve visibility. Therefore, the distance between the laser passing points at the time of incidence and reflection can be easily set.

According to the invention described in claim 3, according to claim 1
Or, in addition to the effect of the invention described in claim 2, since the reflection angle of the visible laser light can be read by the display unit without measuring the distance between both laser passing points at the time of incidence and at the time of reflection,
The reflection angle can be measured quickly and easily.

[Brief description of the drawings]

FIG. 1 is a front view showing a use state of a reflection device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the reflection device.

FIG. 3 is a partially cutaway front view of the reflection device.

FIG. 4 is a plan view of the reflection device.

FIG. 5 is a schematic explanatory view of a reflection device according to another embodiment.

FIG. 6 is a schematic explanatory view of a reflection device similarly applied to blackout of a pillar.

FIG. 7 is a schematic explanatory diagram showing the reflection device applied to level measurement.

FIG. 8 is a schematic explanatory diagram of a case where a reflection angle is measured using a reflection device.

FIG. 9 is a cross-sectional view when a level is attached to the reflection device.

[Explanation of symbols]

5 ... laser transmitter, 8 ... glass body (reflective member), 12
... Display plate (display member), 15 ... Angle display scale (display section), α ... Reflection angle, A ... Laser entrance passage point (laser passage point), B ... Laser reflection passage point (laser passage point), L ...
Visible laser light.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G01C 15/00-15/14 G01B 11/00-11/30 102

Claims (3)

(57) [Claims] 1. A display member through which a visible laser light emitted from a laser transmitter can pass, and a laser passing point through which the visible laser light passes is displayed on a predetermined plane, and a visible light passing through the display member. A reflecting member for reflecting the laser light toward the display member. 2. The reflection device according to claim 1, wherein said display member is translucent. 3. The reflection device according to claim 1, wherein the display member has a display section for indicating a reflection angle of the visible laser light reflected by the reflection member.